🏗 Merge C++ into python codebase (#504)

## Description: Move esphome-core codebase into esphome (and a bunch of other refactors). See https://github.com/esphome/feature-requests/issues/97 Yes this is a shit ton of work and no there's no way to automate it :( But it will be worth it 👍 Progress: - Core support (file copy etc): 80% - Base Abstractions (light, switch): ~50% - Integrations: ~10% - Working? Yes, (but only with ported components). Other refactors: - Moves all codegen related stuff into a single class: `esphome.codegen` (imported as `cg`) - Rework coroutine syntax - Move from `component/platform.py` to `domain/component.py` structure as with HA - Move all defaults out of C++ and into config validation. - Remove `make_...` helpers from Application class. Reason: Merge conflicts with every single new integration. - Pointer Variables are stored globally instead of locally in setup(). Reason: stack size limit. Future work: - Rework const.py - Move all `CONF_...` into a conf class (usage `conf.UPDATE_INTERVAL` vs `CONF_UPDATE_INTERVAL`). Reason: Less convoluted import block - Enable loading from `custom_components` folder. **Related issue (if applicable):** https://github.com/esphome/feature-requests/issues/97 **Pull request in [esphome-docs](https://github.com/esphome/esphome-docs) with documentation (if applicable):** esphome/esphome-docs#<esphome-docs PR number goes here> ## Checklist: - [ ] The code change is tested and works locally. - [ ] Tests have been added to verify that the new code works (under `tests/` folder). If user exposed functionality or configuration variables are added/changed: - [ ] Documentation added/updated in [esphomedocs](https://github.com/OttoWinter/esphomedocs).
2026-02-05 22:17:05 +08:00 · 2019-04-17 12:06:00 +02:00
parent 049807e3ab
commit 6682c43dfa
817 changed files with 54156 additions and 10830 deletions
--- a/.clang-format
+++ b/.clang-format
@@ -0,0 +1,137 @@
+Language:        Cpp
+AccessModifierOffset: -1
+AlignAfterOpenBracket: Align
+AlignConsecutiveAssignments: false
+AlignConsecutiveDeclarations: false
+AlignEscapedNewlines: DontAlign
+AlignOperands:   true
+AlignTrailingComments: true
+AllowAllParametersOfDeclarationOnNextLine: true
+AllowShortBlocksOnASingleLine: false
+AllowShortCaseLabelsOnASingleLine: false
+AllowShortFunctionsOnASingleLine: All
+AllowShortIfStatementsOnASingleLine: false
+AllowShortLoopsOnASingleLine: false
+AlwaysBreakAfterReturnType: None
+AlwaysBreakBeforeMultilineStrings: false
+AlwaysBreakTemplateDeclarations: MultiLine
+BinPackArguments: true
+BinPackParameters: true
+BraceWrapping:
+  AfterClass:      false
+  AfterControlStatement: false
+  AfterEnum:       false
+  AfterFunction:   false
+  AfterNamespace:  false
+  AfterObjCDeclaration: false
+  AfterStruct:     false
+  AfterUnion:      false
+  AfterExternBlock: false
+  BeforeCatch:     false
+  BeforeElse:      false
+  IndentBraces:    false
+  SplitEmptyFunction: true
+  SplitEmptyRecord: true
+  SplitEmptyNamespace: true
+BreakBeforeBinaryOperators: None
+BreakBeforeBraces: Attach
+BreakBeforeInheritanceComma: false
+BreakInheritanceList: BeforeColon
+BreakBeforeTernaryOperators: true
+BreakConstructorInitializersBeforeComma: false
+BreakConstructorInitializers: BeforeColon
+BreakAfterJavaFieldAnnotations: false
+BreakStringLiterals: true
+ColumnLimit:     120
+CommentPragmas:  '^ IWYU pragma:'
+CompactNamespaces: false
+ConstructorInitializerAllOnOneLineOrOnePerLine: true
+ConstructorInitializerIndentWidth: 4
+ContinuationIndentWidth: 4
+Cpp11BracedListStyle: true
+DerivePointerAlignment: true
+DisableFormat:   false
+ExperimentalAutoDetectBinPacking: false
+FixNamespaceComments: true
+ForEachMacros:
+  - foreach
+  - Q_FOREACH
+  - BOOST_FOREACH
+IncludeBlocks:   Preserve
+IncludeCategories:
+  - Regex:           '^<ext/.*\.h>'
+    Priority:        2
+  - Regex:           '^<.*\.h>'
+    Priority:        1
+  - Regex:           '^<.*'
+    Priority:        2
+  - Regex:           '.*'
+    Priority:        3
+IncludeIsMainRegex: '([-_](test|unittest))?$'
+IndentCaseLabels: true
+IndentPPDirectives: None
+IndentWidth:     2
+IndentWrappedFunctionNames: false
+KeepEmptyLinesAtTheStartOfBlocks: false
+MacroBlockBegin: ''
+MacroBlockEnd:   ''
+MaxEmptyLinesToKeep: 1
+NamespaceIndentation: None
+PenaltyBreakAssignment: 2
+PenaltyBreakBeforeFirstCallParameter: 1
+PenaltyBreakComment: 300
+PenaltyBreakFirstLessLess: 120
+PenaltyBreakString: 1000
+PenaltyBreakTemplateDeclaration: 10
+PenaltyExcessCharacter: 1000000
+PenaltyReturnTypeOnItsOwnLine: 2000
+PointerAlignment: Right
+RawStringFormats:
+  - Language:        Cpp
+    Delimiters:
+      - cc
+      - CC
+      - cpp
+      - Cpp
+      - CPP
+      - 'c++'
+      - 'C++'
+    CanonicalDelimiter: ''
+    BasedOnStyle:    google
+  - Language:        TextProto
+    Delimiters:
+      - pb
+      - PB
+      - proto
+      - PROTO
+    EnclosingFunctions:
+      - EqualsProto
+      - EquivToProto
+      - PARSE_PARTIAL_TEXT_PROTO
+      - PARSE_TEST_PROTO
+      - PARSE_TEXT_PROTO
+      - ParseTextOrDie
+      - ParseTextProtoOrDie
+    CanonicalDelimiter: ''
+    BasedOnStyle:    google
+ReflowComments:  true
+SortIncludes:    false
+SortUsingDeclarations: false
+SpaceAfterCStyleCast: true
+SpaceAfterTemplateKeyword: false
+SpaceBeforeAssignmentOperators: true
+SpaceBeforeCpp11BracedList: false
+SpaceBeforeCtorInitializerColon: true
+SpaceBeforeInheritanceColon: true
+SpaceBeforeParens: ControlStatements
+SpaceBeforeRangeBasedForLoopColon: true
+SpaceInEmptyParentheses: false
+SpacesBeforeTrailingComments: 2
+SpacesInAngles:  false
+SpacesInContainerLiterals: false
+SpacesInCStyleCastParentheses: false
+SpacesInParentheses: false
+SpacesInSquareBrackets: false
+Standard:        Auto
+TabWidth:        2
+UseTab:          Never
--- a/.clang-tidy
+++ b/.clang-tidy
@@ -0,0 +1,127 @@
+---
+Checks: >-
+  *,
+  -abseil-*,
+  -android-*,
+  -boost-*,
+  -bugprone-macro-parentheses,
+  -cert-dcl50-cpp,
+  -cert-err58-cpp,
+  -clang-analyzer-core.CallAndMessage,
+  -clang-analyzer-osx.*,
+  -clang-analyzer-security.*,
+  -cppcoreguidelines-avoid-goto,
+  -cppcoreguidelines-c-copy-assignment-signature,
+  -cppcoreguidelines-owning-memory,
+  -cppcoreguidelines-pro-bounds-array-to-pointer-decay,
+  -cppcoreguidelines-pro-bounds-constant-array-index,
+  -cppcoreguidelines-pro-bounds-pointer-arithmetic,
+  -cppcoreguidelines-pro-type-const-cast,
+  -cppcoreguidelines-pro-type-cstyle-cast,
+  -cppcoreguidelines-pro-type-member-init,
+  -cppcoreguidelines-pro-type-reinterpret-cast,
+  -cppcoreguidelines-pro-type-static-cast-downcast,
+  -cppcoreguidelines-pro-type-union-access,
+  -cppcoreguidelines-pro-type-vararg,
+  -cppcoreguidelines-special-member-functions,
+  -fuchsia-*,
+  -fuchsia-default-arguments,
+  -fuchsia-multiple-inheritance,
+  -fuchsia-overloaded-operator,
+  -fuchsia-statically-constructed-objects,
+  -google-build-using-namespace,
+  -google-explicit-constructor,
+  -google-readability-braces-around-statements,
+  -google-readability-casting,
+  -google-readability-todo,
+  -google-runtime-int,
+  -google-runtime-references,
+  -hicpp-*,
+  -llvm-header-guard,
+  -llvm-include-order,
+  -misc-unconventional-assign-operator,
+  -misc-unused-parameters,
+  -modernize-deprecated-headers,
+  -modernize-pass-by-value,
+  -modernize-pass-by-value,
+  -modernize-return-braced-init-list,
+  -modernize-use-auto,
+  -modernize-use-default-member-init,
+  -modernize-use-equals-default,
+  -mpi-*,
+  -objc-*,
+  -performance-unnecessary-value-param,
+  -readability-braces-around-statements,
+  -readability-else-after-return,
+  -readability-implicit-bool-conversion,
+  -readability-named-parameter,
+  -readability-redundant-member-init,
+  -warnings-as-errors,
+  -zircon-*
+WarningsAsErrors: '*'
+HeaderFilterRegex: '^.*/src/esphome/.*'
+AnalyzeTemporaryDtors: false
+FormatStyle:     google
+CheckOptions:
+  - key:             google-readability-braces-around-statements.ShortStatementLines
+    value:           '1'
+  - key:             google-readability-function-size.StatementThreshold
+    value:           '800'
+  - key:             google-readability-namespace-comments.ShortNamespaceLines
+    value:           '10'
+  - key:             google-readability-namespace-comments.SpacesBeforeComments
+    value:           '2'
+  - key:             modernize-loop-convert.MaxCopySize
+    value:           '16'
+  - key:             modernize-loop-convert.MinConfidence
+    value:           reasonable
+  - key:             modernize-loop-convert.NamingStyle
+    value:           CamelCase
+  - key:             modernize-pass-by-value.IncludeStyle
+    value:           llvm
+  - key:             modernize-replace-auto-ptr.IncludeStyle
+    value:           llvm
+  - key:             modernize-use-nullptr.NullMacros
+    value:           'NULL'
+  - key:             readability-identifier-naming.LocalVariableCase
+    value:           'lower_case'
+  - key:             readability-identifier-naming.ClassCase
+    value:           'CamelCase'
+  - key:             readability-identifier-naming.StructCase
+    value:           'CamelCase'
+  - key:             readability-identifier-naming.EnumCase
+    value:           'CamelCase'
+  - key:             readability-identifier-naming.EnumConstantCase
+    value:           'UPPER_CASE'
+  - key:             readability-identifier-naming.StaticConstantCase
+    value:           'UPPER_CASE'
+  - key:             readability-identifier-naming.StaticVariableCase
+    value:           'UPPER_CASE'
+  - key:             readability-identifier-naming.GlobalConstantCase
+    value:           'UPPER_CASE'
+  - key:             readability-identifier-naming.ParameterCase
+    value:           'lower_case'
+  - key:             readability-identifier-naming.PrivateMemberPrefix
+    value:           'NO_PRIVATE_MEMBERS_ALWAYS_USE_PROTECTED'
+  - key:             readability-identifier-naming.PrivateMethodPrefix
+    value:           'NO_PRIVATE_METHODS_ALWAYS_USE_PROTECTED'
+  - key:             readability-identifier-naming.ClassMemberCase
+    value:           'lower_case'
+  - key:             readability-identifier-naming.ClassMemberCase
+    value:           'lower_case'
+  - key:             readability-identifier-naming.ProtectedMemberCase
+    value:           'lower_case'
+  - key:             readability-identifier-naming.ProtectedMemberSuffix
+    value:           '_'
+  - key:             readability-identifier-naming.FunctionCase
+    value:           'lower_case'
+  - key:             readability-identifier-naming.ClassMethodCase
+    value:           'lower_case'
+  - key:             readability-identifier-naming.ProtectedMethodCase
+    value:           'lower_case'
+  - key:             readability-identifier-naming.ProtectedMethodSuffix
+    value:           '_'
+  - key:             readability-identifier-naming.VirtualMethodCase
+    value:           'lower_case'
+  - key:             readability-identifier-naming.VirtualMethodSuffix
+    value:           ''
--- a/.gitignore
+++ b/.gitignore
@@ -25,12 +25,6 @@ wheels/
 *.egg
 MANIFEST

-# PyInstaller
-#  Usually these files are written by a python script from a template
-#  before PyInstaller builds the exe, so as to inject date/other infos into it.
-*.manifest
-*.spec
-
 # Installer logs
 pip-log.txt
 pip-delete-this-directory.txt
@@ -51,36 +45,9 @@ coverage.xml
 *.mo
 *.pot

-# Django stuff:
-*.log
-local_settings.py
-db.sqlite3
-
-# Flask stuff:
-instance/
-.webassets-cache
-
-# Scrapy stuff:
-.scrapy
-
-# Sphinx documentation
-docs/_build/
-
-# PyBuilder
-target/
-
-# Jupyter Notebook
-.ipynb_checkpoints
-
 # pyenv
 .python-version

-# celery beat schedule file
-celerybeat-schedule
-
-# SageMath parsed files
-*.sage.py
-
 # Environments
 .env
 .venv
@@ -90,19 +57,46 @@ ENV/
 env.bak/
 venv.bak/

-# Spyder project settings
-.spyderproject
-.spyproject
-
-# Rope project settings
-.ropeproject
-
-# mkdocs documentation
-/site
-
 # mypy
 .mypy_cache/

+.pioenvs
+.piolibdeps
+.vscode
+CMakeListsPrivate.txt
+CMakeLists.txt
+
+# User-specific stuff:
+.idea/**/workspace.xml
+.idea/**/tasks.xml
+.idea/dictionaries
+
+# Sensitive or high-churn files:
+.idea/**/dataSources/
+.idea/**/dataSources.ids
+.idea/**/dataSources.xml
+.idea/**/dataSources.local.xml
+.idea/**/dynamic.xml
+
+# CMake
+cmake-build-debug/
+cmake-build-release/
+
+CMakeCache.txt
+CMakeFiles
+CMakeScripts
+Testing
+Makefile
+cmake_install.cmake
+install_manifest.txt
+compile_commands.json
+CTestTestfile.cmake
+/*.cbp
+
+.clang_complete
+.gcc-flags.json
+
 config/
 tests/build/
 tests/.esphome/
+/.temp-clang-tidy.cpp
--- a/.travis.yml
+++ b/.travis.yml
@@ -1,9 +1,10 @@
 sudo: false
 language: python
-
+install: script/setup
 cache:
  directories:
    - "~/.platformio"
+    - "$TRAVIS_BUILD_DIR/.piolibdeps"
    - "$TRAVIS_BUILD_DIR/tests/build/test1/.piolibdeps"
    - "$TRAVIS_BUILD_DIR/tests/build/test2/.piolibdeps"
    - "$TRAVIS_BUILD_DIR/tests/build/test3/.piolibdeps"
@@ -13,26 +14,43 @@ matrix:
  include:
    - python: "2.7"
      env: TARGET=Lint2.7
-      install: pip install -e . && pip install flake8==3.6.0 pylint==1.9.4 pillow
      script:
+        - script/ci-custom.py
        - flake8 esphome
        - pylint esphome
    - python: "3.5.3"
      env: TARGET=Lint3.5
-      install: pip install -U https://github.com/platformio/platformio-core/archive/develop.zip && pip install -e . && pip install flake8==3.6.0 pylint==2.3.0 pillow
      script:
+        - script/ci-custom.py
        - flake8 esphome
        - pylint esphome
    - python: "2.7"
      env: TARGET=Test2.7
-      install: pip install -e . && pip install flake8==3.6.0 pylint==1.9.4 pillow
      script:
        - esphome tests/test1.yaml compile
        - esphome tests/test2.yaml compile
        - esphome tests/test3.yaml compile
-    #- python: "3.5.3"
-    #  env: TARGET=Test3.5
-    #  install: pip install -U https://github.com/platformio/platformio-core/archive/develop.zip && pip install -e . && pip install flake8==3.6.0 pylint==2.3.0 pillow
-    #  script:
-    #    - esphome tests/test1.yaml compile
-    #    - esphome tests/test2.yaml compile
+    - env: TARGET=Cpp-Lint
+      dist: trusty
+      sudo: required
+      addons:
+        apt:
+          sources:
+            - ubuntu-toolchain-r-test
+            - llvm-toolchain-trusty-7
+          packages:
+            - clang-tidy-7
+            - clang-format-7
+      before_script:
+        - pio init --ide atom
+        - |
+          if ! patch -R -p0 -s -f --dry-run <script/.neopixelbus.patch; then
+            patch -p0 < script/.neopixelbus.patch
+          fi
+        - clang-tidy-7 -version
+        - clang-format-7 -version
+        - clang-apply-replacements-7 -version
+      script:
+        - script/clang-tidy.py --all-headers -j 2 --fix
+        - script/clang-format.py -i -j 2
+        - script/ci-suggest-changes
--- a/692
+++ b/692
--- a/MANIFEST.in
+++ b/MANIFEST.in
@@ -1,6 +1,5 @@
 include LICENSE
 include README.md
 include esphome/dashboard/templates/*.html
-include esphome/dashboard/static/*.js
-include esphome/dashboard/static/*.css
-include esphome/dashboard/static/*.ico
+recursive-include esphome/dashboard/static *.ico *.js *.css
+recursive-include esphome *.cpp *.h *.tcc
--- a/esphome/main.py
+++ b/esphome/main.py
@@ -1,28 +1,22 @@
 from __future__ import print_function

 import argparse
-from datetime import datetime
 import logging
 import os
-import random
 import sys
+from datetime import datetime

-from esphome import const, core_config, writer, yaml_util
-from esphome.config import get_component, iter_components, read_config, strip_default_ids
-from esphome.const import CONF_BAUD_RATE, CONF_BROKER, CONF_ESPHOME, CONF_LOGGER, \
-    CONF_USE_CUSTOM_CODE
+from esphome import const, writer, yaml_util
+from esphome.config import iter_components, read_config, strip_default_ids
+from esphome.const import CONF_BAUD_RATE, CONF_BROKER, CONF_LOGGER, CONF_OTA, \
+    CONF_PASSWORD, CONF_PORT
 from esphome.core import CORE, EsphomeError
 from esphome.helpers import color, indent
-from esphome.py_compat import IS_PY2, safe_input, text_type
-from esphome.storage_json import StorageJSON, storage_path
-from esphome.util import run_external_command, run_external_process, safe_print, \
-    is_dev_esphome_version
+from esphome.py_compat import IS_PY2, safe_input
+from esphome.util import run_external_command, run_external_process, safe_print

 _LOGGER = logging.getLogger(__name__)

-PRE_INITIALIZE = ['esphome', 'logger', 'wifi', 'ethernet', 'ota', 'mqtt', 'web_server', 'api',
-                  'i2c']
-

 def get_serial_ports():
    # from https://github.com/pyserial/pyserial/blob/master/serial/tools/list_ports.py
@@ -124,34 +118,17 @@ def run_miniterm(config, port):


 def write_cpp(config):
-    from esphome.cpp_generator import Expression, RawStatement, add, statement
-
    _LOGGER.info("Generating C++ source...")

-    CORE.add_job(core_config.to_code, config[CONF_ESPHOME], domain='esphome')
-    for domain in PRE_INITIALIZE:
-        if domain == CONF_ESPHOME or domain not in config:
-            continue
-        CORE.add_job(get_component(domain).to_code, config[domain], domain=domain)
-
-    for domain, component, conf in iter_components(config):
-        if domain in PRE_INITIALIZE or not hasattr(component, 'to_code'):
-            continue
-        CORE.add_job(component.to_code, conf, domain=domain)
+    for _, component, conf in iter_components(CORE.config):
+        if component.to_code is not None:
+            CORE.add_job(component.to_code, conf)

    CORE.flush_tasks()
-    add(RawStatement(''))
-    add(RawStatement(''))
-    all_code = []
-    for exp in CORE.expressions:
-        if not config[CONF_ESPHOME][CONF_USE_CUSTOM_CODE]:
-            if isinstance(exp, Expression) and not exp.required:
-                continue
-        all_code.append(text_type(statement(exp)))

    writer.write_platformio_project()

-    code_s = indent('\n'.join(line.rstrip() for line in all_code))
+    code_s = indent(CORE.cpp_main_section)
    writer.write_cpp(code_s)
    return 0

@@ -160,17 +137,7 @@ def compile_program(args, config):
    from esphome import platformio_api

    _LOGGER.info("Compiling app...")
-    rc = platformio_api.run_compile(config, args.verbose)
-    if rc != 0 and CORE.is_dev_esphome_core_version and not is_dev_esphome_version():
-        _LOGGER.warning("You're using 'esphome_core_version: dev' but not using the "
-                        "dev version of the ESPHome tool.")
-        _LOGGER.warning("Expect compile errors if these versions are out of sync.")
-        _LOGGER.warning("Please install the dev version of ESPHome too when using "
-                        "'esphome_core_version: dev'.")
-        _LOGGER.warning(" - Hass.io: Install 'ESPHome (dev)' addon")
-        _LOGGER.warning(" - Docker: docker run [...] esphome/esphome:dev [...]")
-        _LOGGER.warning(" - PIP: pip install -U https://github.com/esphome/esphome/archive/dev.zip")
-    return rc
+    return platformio_api.run_compile(config, args.verbose)


 def upload_using_esptool(config, port):
@@ -195,31 +162,13 @@ def upload_program(config, args, host):
            return upload_using_esptool(config, host)
        return platformio_api.run_upload(config, args.verbose, host)

-    from esphome.components import ota
    from esphome import espota2

-    if args.host_port is not None:
-        host_port = args.host_port
-    else:
-        host_port = int(os.getenv('ESPHOME_OTA_HOST_PORT', random.randint(10000, 60000)))
-
-    verbose = args.verbose
-    remote_port = ota.get_port(config)
-    password = ota.get_auth(config)
-
-    storage = StorageJSON.load(storage_path())
+    ota_conf = config[CONF_OTA]
+    remote_port = ota_conf[CONF_PORT]
+    password = ota_conf[CONF_PASSWORD]
    res = espota2.run_ota(host, remote_port, password, CORE.firmware_bin)
-    if res == 0:
-        if storage is not None and storage.use_legacy_ota:
-            storage.use_legacy_ota = False
-            storage.save(storage_path())
-        return res
-    if storage is not None and not storage.use_legacy_ota:
-        return res
-
-    _LOGGER.warning("OTA v2 method failed. Trying with legacy OTA...")
-    return espota2.run_legacy_ota(verbose, host_port, host, remote_port, password,
-                                  CORE.firmware_bin)
+    return res


 def show_logs(config, args, port):
@@ -237,7 +186,7 @@ def show_logs(config, args, port):

        return mqtt.show_logs(config, args.topic, args.username, args.password, args.client_id)

-    raise ValueError
+    raise EsphomeError("No remote or local logging method configured (api/mqtt/logger)")


 def clean_mqtt(config, args):
@@ -409,7 +358,6 @@ def parse_args(argv):
                                                         'and upload the latest binary.')
    parser_upload.add_argument('--upload-port', help="Manually specify the upload port to use. "
                                                     "For example /dev/cu.SLAB_USBtoUART.")
-    parser_upload.add_argument('--host-port', help="Specify the host port.", type=int)

    parser_logs = subparsers.add_parser('logs', help='Validate the configuration '
                                                     'and show all MQTT logs.')
@@ -424,7 +372,6 @@ def parse_args(argv):
                                                   'upload it, and start MQTT logs.')
    parser_run.add_argument('--upload-port', help="Manually specify the upload port/ip to use. "
                                                  "For example /dev/cu.SLAB_USBtoUART.")
-    parser_run.add_argument('--host-port', help="Specify the host port to use for OTA", type=int)
    parser_run.add_argument('--no-logs', help='Disable starting MQTT logs.',
                            action='store_true')
    parser_run.add_argument('--topic', help='Manually set the topic to subscribe to for logs.')
--- a/esphome/automation.py
+++ b/esphome/automation.py
@@ -1,12 +1,10 @@
 import copy

-import voluptuous as vol
-
 import esphome.config_validation as cv
 from esphome.const import CONF_ABOVE, CONF_ACTION_ID, CONF_AND, CONF_AUTOMATION_ID, CONF_BELOW, \
    CONF_CONDITION, CONF_CONDITION_ID, CONF_DELAY, CONF_ELSE, CONF_ID, CONF_IF, CONF_LAMBDA, \
    CONF_OR, CONF_RANGE, CONF_THEN, CONF_TRIGGER_ID, CONF_WAIT_UNTIL, CONF_WHILE
-from esphome.core import CORE, coroutine
+from esphome.core import coroutine
 from esphome.cpp_generator import Pvariable, TemplateArguments, add, get_variable, \
    process_lambda, templatable
 from esphome.cpp_types import Action, App, Component, PollingComponent, Trigger, bool_, \
@@ -15,7 +13,7 @@ from esphome.util import ServiceRegistry


 def maybe_simple_id(*validators):
-    validator = vol.All(*validators)
+    validator = cv.All(*validators)

    def validate(value):
        if isinstance(value, dict):
@@ -32,24 +30,24 @@ def validate_recursive_condition(value):
        path = [i] if is_list else []
        item = copy.deepcopy(item)
        if not isinstance(item, dict):
-            raise vol.Invalid(u"Condition must consist of key-value mapping! Got {}".format(item),
-                              path)
+            raise cv.Invalid(u"Condition must consist of key-value mapping! Got {}".format(item),
+                             path)
        key = next((x for x in item if x != CONF_CONDITION_ID), None)
        if key is None:
-            raise vol.Invalid(u"Key missing from action! Got {}".format(item), path)
+            raise cv.Invalid(u"Key missing from action! Got {}".format(item), path)
        if key not in CONDITION_REGISTRY:
-            raise vol.Invalid(u"Unable to find condition with the name '{}', is the "
-                              u"component loaded?".format(key), path + [key])
+            raise cv.Invalid(u"Unable to find condition with the name '{}', is the "
+                             u"component loaded?".format(key), path + [key])
        item.setdefault(CONF_CONDITION_ID, None)
        key2 = next((x for x in item if x not in (CONF_CONDITION_ID, key)), None)
        if key2 is not None:
-            raise vol.Invalid(u"Cannot have two conditions in one item. Key '{}' overrides '{}'! "
-                              u"Did you forget to indent the block inside the condition?"
-                              u"".format(key, key2), path)
+            raise cv.Invalid(u"Cannot have two conditions in one item. Key '{}' overrides '{}'! "
+                             u"Did you forget to indent the block inside the condition?"
+                             u"".format(key, key2), path)
        validator = CONDITION_REGISTRY[key][0]
        try:
            condition = validator(item[key] or {})
-        except vol.Invalid as err:
+        except cv.Invalid as err:
            err.prepend(path)
            raise err
        value[i] = {
@@ -67,24 +65,24 @@ def validate_recursive_action(value):
        path = [i] if is_list else []
        item = copy.deepcopy(item)
        if not isinstance(item, dict):
-            raise vol.Invalid(u"Action must consist of key-value mapping! Got {}".format(item),
-                              path)
+            raise cv.Invalid(u"Action must consist of key-value mapping! Got {}".format(item),
+                             path)
        key = next((x for x in item if x != CONF_ACTION_ID), None)
        if key is None:
-            raise vol.Invalid(u"Key missing from action! Got {}".format(item), path)
+            raise cv.Invalid(u"Key missing from action! Got {}".format(item), path)
        if key not in ACTION_REGISTRY:
-            raise vol.Invalid(u"Unable to find action with the name '{}', is the component loaded?"
-                              u"".format(key), path + [key])
+            raise cv.Invalid(u"Unable to find action with the name '{}', is the component loaded?"
+                             u"".format(key), path + [key])
        item.setdefault(CONF_ACTION_ID, None)
        key2 = next((x for x in item if x not in (CONF_ACTION_ID, key)), None)
        if key2 is not None:
-            raise vol.Invalid(u"Cannot have two actions in one item. Key '{}' overrides '{}'! "
-                              u"Did you forget to indent the block inside the action?"
-                              u"".format(key, key2), path)
+            raise cv.Invalid(u"Cannot have two actions in one item. Key '{}' overrides '{}'! "
+                             u"Did you forget to indent the block inside the action?"
+                             u"".format(key, key2), path)
        validator = ACTION_REGISTRY[key][0]
        try:
            action = validator(item[key] or {})
-        except vol.Invalid as err:
+        except cv.Invalid as err:
            err.prepend(path)
            raise err
        value[i] = {
@@ -116,7 +114,7 @@ LambdaCondition = esphome_ns.class_('LambdaCondition', Condition)
 def validate_automation(extra_schema=None, extra_validators=None, single=False):
    if extra_schema is None:
        extra_schema = {}
-    if isinstance(extra_schema, vol.Schema):
+    if isinstance(extra_schema, cv.Schema):
        extra_schema = extra_schema.schema
    schema = AUTOMATION_SCHEMA.extend(extra_schema)

@@ -125,17 +123,17 @@ def validate_automation(extra_schema=None, extra_validators=None, single=False):
            try:
                # First try as a sequence of actions
                return [schema({CONF_THEN: value})]
-            except vol.Invalid as err:
+            except cv.Invalid as err:
                if err.path and err.path[0] == CONF_THEN:
                    err.path.pop(0)

                # Next try as a sequence of automations
                try:
                    return cv.Schema([schema])(value)
-                except vol.Invalid as err2:
+                except cv.Invalid as err2:
                    if 'Unable to find action' in str(err):
                        raise err2
-                    raise vol.MultipleInvalid([err, err2])
+                    raise cv.MultipleInvalid([err, err2])
        elif isinstance(value, dict):
            if CONF_THEN in value:
                return [schema(value)]
@@ -149,7 +147,7 @@ def validate_automation(extra_schema=None, extra_validators=None, single=False):
            value = cv.Schema([extra_validators])(value)
        if single:
            if len(value) != 1:
-                raise vol.Invalid("Cannot have more than 1 automation for templates")
+                raise cv.Invalid("Cannot have more than 1 automation for templates")
            return value[0]
        return value

@@ -159,7 +157,7 @@ def validate_automation(extra_schema=None, extra_validators=None, single=False):
 AUTOMATION_SCHEMA = cv.Schema({
    cv.GenerateID(CONF_TRIGGER_ID): cv.declare_variable_id(Trigger),
    cv.GenerateID(CONF_AUTOMATION_ID): cv.declare_variable_id(Automation),
-    vol.Required(CONF_THEN): validate_recursive_action,
+    cv.Required(CONF_THEN): validate_recursive_action,
 })

 AND_CONDITION_SCHEMA = validate_recursive_condition
@@ -184,9 +182,9 @@ def or_condition_to_code(config, condition_id, template_arg, args):
    yield Pvariable(condition_id, rhs, type=type)


-RANGE_CONDITION_SCHEMA = vol.All(cv.Schema({
-    vol.Optional(CONF_ABOVE): cv.templatable(cv.float_),
-    vol.Optional(CONF_BELOW): cv.templatable(cv.float_),
+RANGE_CONDITION_SCHEMA = cv.All(cv.Schema({
+    cv.Optional(CONF_ABOVE): cv.templatable(cv.float_),
+    cv.Optional(CONF_BELOW): cv.templatable(cv.float_),
 }), cv.has_at_least_one_key(CONF_ABOVE, CONF_BELOW))


@@ -218,10 +216,10 @@ def delay_action_to_code(config, action_id, template_arg, args):
    yield action


-IF_ACTION_SCHEMA = vol.All({
-    vol.Required(CONF_CONDITION): validate_recursive_condition,
-    vol.Optional(CONF_THEN): validate_recursive_action,
-    vol.Optional(CONF_ELSE): validate_recursive_action,
+IF_ACTION_SCHEMA = cv.All({
+    cv.Required(CONF_CONDITION): validate_recursive_condition,
+    cv.Optional(CONF_THEN): validate_recursive_action,
+    cv.Optional(CONF_ELSE): validate_recursive_action,
 }, cv.has_at_least_one_key(CONF_THEN, CONF_ELSE))


@@ -241,8 +239,8 @@ def if_action_to_code(config, action_id, template_arg, args):


 WHILE_ACTION_SCHEMA = cv.Schema({
-    vol.Required(CONF_CONDITION): validate_recursive_condition,
-    vol.Required(CONF_THEN): validate_recursive_action,
+    cv.Required(CONF_CONDITION): validate_recursive_condition,
+    cv.Required(CONF_THEN): validate_recursive_action,
 })


@@ -259,7 +257,7 @@ def while_action_to_code(config, action_id, template_arg, args):

 def validate_wait_until(value):
    schema = cv.Schema({
-        vol.Required(CONF_CONDITION): validate_recursive_condition
+        cv.Required(CONF_CONDITION): validate_recursive_condition
    })
    if isinstance(value, dict) and CONF_CONDITION in value:
        return schema(value)
@@ -303,7 +301,7 @@ def lambda_condition_to_code(config, condition_id, template_arg, args):

 CONF_COMPONENT_UPDATE = 'component.update'
 COMPONENT_UPDATE_ACTION_SCHEMA = maybe_simple_id({
-    vol.Required(CONF_ID): cv.use_variable_id(PollingComponent),
+    cv.Required(CONF_ID): cv.use_variable_id(PollingComponent),
 })


@@ -352,16 +350,12 @@ def build_conditions(config, templ, args):


@coroutine
-def build_automation_(trigger, args, config):
+def build_automation(trigger, args, config):
    arg_types = [arg[0] for arg in args]
    templ = TemplateArguments(*arg_types)
-    rhs = App.make_automation(templ, trigger)
    type = Automation.template(templ)
+    rhs = type.new(trigger)
    obj = Pvariable(config[CONF_AUTOMATION_ID], rhs, type=type)
    actions = yield build_actions(config[CONF_THEN], templ, args)
    add(obj.add_actions(actions))
    yield obj
-
-
-def build_automations(trigger, args, config):
-    CORE.add_job(build_automation_, trigger, args, config)
--- a/esphome/codegen.py
+++ b/esphome/codegen.py
@@ -0,0 +1,26 @@
+# Base file for all codegen-related imports
+# All integrations should have a line in the import section like this
+#
+# >>> import esphome.codegen as cg
+#
+# Integrations should specifically *NOT* import directly from the
+# other helper modules (cpp_generator etc) directly if they don't
+# want to break suddenly due to a rename (this file will get backports for features).
+
+# pylint: disable=unused-import
+from esphome.cpp_generator import (  # noqa
+    Expression, RawExpression, TemplateArguments,
+    StructInitializer, ArrayInitializer, safe_exp, Statement,
+    progmem_array, statement, variable, Pvariable, new_Pvariable,
+    add, add_global, add_library, add_build_flag, add_define,
+    get_variable, process_lambda, is_template, templatable, MockObj,
+    MockObjClass)
+from esphome.cpp_helpers import (  # noqa
+    gpio_pin_expression, register_component, build_registry_entry,
+    build_registry_list)
+from esphome.cpp_types import (  # noqa
+    global_ns, void, nullptr, float_, bool_, std_ns, std_string,
+    std_vector, uint8, uint16, uint32, int32, const_char_ptr, NAN,
+    esphome_ns, App, Nameable, Trigger, Action, Component, ComponentPtr,
+    PollingComponent, Application, optional, arduino_json_ns, JsonObject,
+    JsonObjectRef, JsonObjectConstRef, Controller, GPIOPin)
--- a/esphome/components/a4988/init.py
+++ b/esphome/components/a4988/init.py
--- a/esphome/components/a4988/a4988.cpp
+++ b/esphome/components/a4988/a4988.cpp
@@ -0,0 +1,49 @@
+#include "a4988.h"
+#include "esphome/core/log.h"
+
+namespace esphome {
+namespace a4988 {
+
+static const char *TAG = "a4988.stepper";
+
+void A4988::setup() {
+  ESP_LOGCONFIG(TAG, "Setting up A4988...");
+  if (this->sleep_pin_ != nullptr) {
+    this->sleep_pin_->setup();
+    this->sleep_pin_->digital_write(false);
+  }
+  this->step_pin_->setup();
+  this->step_pin_->digital_write(false);
+  this->dir_pin_->setup();
+  this->dir_pin_->digital_write(false);
+}
+void A4988::dump_config() {
+  ESP_LOGCONFIG(TAG, "A4988:");
+  LOG_PIN("  Step Pin: ", this->step_pin_);
+  LOG_PIN("  Dir Pin: ", this->dir_pin_);
+  LOG_PIN("  Sleep Pin: ", this->sleep_pin_);
+  LOG_STEPPER(this);
+}
+void A4988::loop() {
+  bool at_target = this->has_reached_target();
+  if (this->sleep_pin_ != nullptr) {
+    this->sleep_pin_->digital_write(!at_target);
+  }
+  if (at_target) {
+    this->high_freq_.stop();
+  } else {
+    this->high_freq_.start();
+  }
+
+  int32_t dir = this->should_step_();
+  if (dir == 0)
+    return;
+
+  this->dir_pin_->digital_write(dir == 1);
+  this->step_pin_->digital_write(true);
+  delayMicroseconds(5);
+  this->step_pin_->digital_write(false);
+}
+
+}  // namespace a4988
+}  // namespace esphome
--- a/esphome/components/a4988/a4988.h
+++ b/esphome/components/a4988/a4988.h
@@ -0,0 +1,27 @@
+#pragma once
+
+#include "esphome/core/component.h"
+#include "esphome/core/esphal.h"
+#include "esphome/components/stepper/stepper.h"
+
+namespace esphome {
+namespace a4988 {
+
+class A4988 : public stepper::Stepper, public Component {
+ public:
+  A4988(GPIOPin *step_pin, GPIOPin *dir_pin) : step_pin_(step_pin), dir_pin_(dir_pin) {}
+  void set_sleep_pin(GPIOPin *sleep_pin) { this->sleep_pin_ = sleep_pin; }
+  void setup() override;
+  void dump_config() override;
+  void loop() override;
+  float get_setup_priority() const override { return setup_priority::HARDWARE; }
+
+ protected:
+  GPIOPin *step_pin_;
+  GPIOPin *dir_pin_;
+  GPIOPin *sleep_pin_{nullptr};
+  HighFrequencyLoopRequester high_freq_;
+};
+
+}  // namespace a4988
+}  // namespace esphome
--- a/esphome/components/a4988/stepper.py
+++ b/esphome/components/a4988/stepper.py
@@ -0,0 +1,28 @@
+from esphome import pins
+from esphome.components import stepper
+import esphome.config_validation as cv
+import esphome.codegen as cg
+from esphome.const import CONF_DIR_PIN, CONF_ID, CONF_SLEEP_PIN, CONF_STEP_PIN
+
+
+a4988_ns = cg.esphome_ns.namespace('a4988')
+A4988 = a4988_ns.class_('A4988', stepper.Stepper, cg.Component)
+
+CONFIG_SCHEMA = stepper.STEPPER_SCHEMA.extend({
+    cv.Required(CONF_ID): cv.declare_variable_id(A4988),
+    cv.Required(CONF_STEP_PIN): pins.gpio_output_pin_schema,
+    cv.Required(CONF_DIR_PIN): pins.gpio_output_pin_schema,
+    cv.Optional(CONF_SLEEP_PIN): pins.gpio_output_pin_schema,
+}).extend(cv.COMPONENT_SCHEMA)
+
+
+def to_code(config):
+    step_pin = yield cg.gpio_pin_expression(config[CONF_STEP_PIN])
+    dir_pin = yield cg.gpio_pin_expression(config[CONF_DIR_PIN])
+    var = cg.new_Pvariable(config[CONF_ID], step_pin, dir_pin)
+    yield cg.register_component(var, config)
+    yield stepper.register_stepper(var, config)
+
+    if CONF_SLEEP_PIN in config:
+        sleep_pin = yield cg.gpio_pin_expression(config[CONF_SLEEP_PIN])
+        cg.add(var.set_sleep_pin(sleep_pin))
--- a/esphome/components/adc/init.py
+++ b/esphome/components/adc/init.py
--- a/esphome/components/adc/adc_sensor.cpp
+++ b/esphome/components/adc/adc_sensor.cpp
@@ -0,0 +1,89 @@
+#include "esphome/components/adc/adc_sensor.h"
+#include "esphome/core/log.h"
+
+namespace esphome {
+namespace adc {
+
+static const char *TAG = "adc";
+
+ADCSensor::ADCSensor(const std::string &name, uint8_t pin, uint32_t update_interval)
+    : PollingSensorComponent(name, update_interval), pin_(pin) {}
+
+#ifdef ARDUINO_ARCH_ESP32
+void ADCSensor::set_attenuation(adc_attenuation_t attenuation) { this->attenuation_ = attenuation; }
+#endif
+
+void ADCSensor::setup() {
+  ESP_LOGCONFIG(TAG, "Setting up ADC '%s'...", this->get_name().c_str());
+  GPIOPin(this->pin_, INPUT).setup();
+
+#ifdef ARDUINO_ARCH_ESP32
+  analogSetPinAttenuation(this->pin_, this->attenuation_);
+#endif
+}
+void ADCSensor::dump_config() {
+  LOG_SENSOR("", "ADC Sensor", this);
+#ifdef ARDUINO_ARCH_ESP8266
+#ifdef USE_ADC_SENSOR_VCC
+  ESP_LOGCONFIG(TAG, "  Pin: VCC");
+#else
+  ESP_LOGCONFIG(TAG, "  Pin: %u", this->pin_);
+#endif
+#endif
+#ifdef ARDUINO_ARCH_ESP32
+  ESP_LOGCONFIG(TAG, "  Pin: %u", this->pin_);
+  switch (this->attenuation_) {
+    case ADC_0db:
+      ESP_LOGCONFIG(TAG, " Attenuation: 0db (max 1.1V)");
+      break;
+    case ADC_2_5db:
+      ESP_LOGCONFIG(TAG, " Attenuation: 2.5db (max 1.5V)");
+      break;
+    case ADC_6db:
+      ESP_LOGCONFIG(TAG, " Attenuation: 6db (max 2.2V)");
+      break;
+    case ADC_11db:
+      ESP_LOGCONFIG(TAG, " Attenuation: 11db (max 3.9V)");
+      break;
+  }
+#endif
+  LOG_UPDATE_INTERVAL(this);
+}
+float ADCSensor::get_setup_priority() const { return setup_priority::DATA; }
+void ADCSensor::update() {
+#ifdef ARDUINO_ARCH_ESP32
+  float value_v = analogRead(this->pin_) / 4095.0f;
+  switch (this->attenuation_) {
+    case ADC_0db:
+      value_v *= 1.1;
+      break;
+    case ADC_2_5db:
+      value_v *= 1.5;
+      break;
+    case ADC_6db:
+      value_v *= 2.2;
+      break;
+    case ADC_11db:
+      value_v *= 3.9;
+      break;
+  }
+#endif
+
+#ifdef ARDUINO_ARCH_ESP8266
+#ifdef USE_ADC_SENSOR_VCC
+  float value_v = ESP.getVcc() / 1024.0f;
+#else
+  float value_v = analogRead(this->pin_) / 1024.0f;
+#endif
+#endif
+
+  ESP_LOGD(TAG, "'%s': Got voltage=%.2fV", this->get_name().c_str(), value_v);
+
+  this->publish_state(value_v);
+}
+#ifdef ARDUINO_ARCH_ESP8266
+std::string ADCSensor::unique_id() { return get_mac_address() + "-adc"; }
+#endif
+
+}  // namespace adc
+}  // namespace esphome
--- a/esphome/components/adc/adc_sensor.h
+++ b/esphome/components/adc/adc_sensor.h
@@ -0,0 +1,43 @@
+#pragma once
+
+#include "esphome/core/component.h"
+#include "esphome/core/esphal.h"
+#include "esphome/components/sensor/sensor.h"
+
+namespace esphome {
+namespace adc {
+
+class ADCSensor : public sensor::PollingSensorComponent {
+ public:
+  /// Construct the ADCSensor with the provided pin and update interval in ms.
+  explicit ADCSensor(const std::string &name, uint8_t pin, uint32_t update_interval);
+
+#ifdef ARDUINO_ARCH_ESP32
+  /// Set the attenuation for this pin. Only available on the ESP32.
+  void set_attenuation(adc_attenuation_t attenuation);
+#endif
+
+  // ========== INTERNAL METHODS ==========
+  // (In most use cases you won't need these)
+  /// Update adc values.
+  void update() override;
+  /// Setup ADc
+  void setup() override;
+  void dump_config() override;
+  /// `HARDWARE_LATE` setup priority.
+  float get_setup_priority() const override;
+
+#ifdef ARDUINO_ARCH_ESP8266
+  std::string unique_id() override;
+#endif
+
+ protected:
+  uint8_t pin_;
+
+#ifdef ARDUINO_ARCH_ESP32
+  adc_attenuation_t attenuation_{ADC_0db};
+#endif
+};
+
+}  // namespace adc
+}  // namespace esphome
--- a/esphome/components/adc/sensor.py
+++ b/esphome/components/adc/sensor.py
@@ -0,0 +1,52 @@
+import esphome.codegen as cg
+import esphome.config_validation as cv
+from esphome import pins
+from esphome.components import sensor
+from esphome.const import CONF_ATTENUATION, CONF_ID, CONF_NAME, CONF_PIN, CONF_UPDATE_INTERVAL, \
+    CONF_ICON, ICON_FLASH, CONF_UNIT_OF_MEASUREMENT, UNIT_VOLT, CONF_ACCURACY_DECIMALS
+
+ATTENUATION_MODES = {
+    '0db': cg.global_ns.ADC_0db,
+    '2.5db': cg.global_ns.ADC_2_5db,
+    '6db': cg.global_ns.ADC_6db,
+    '11db': cg.global_ns.ADC_11db,
+}
+
+
+def validate_adc_pin(value):
+    vcc = str(value).upper()
+    if vcc == 'VCC':
+        return cv.only_on_esp8266(vcc)
+    return pins.analog_pin(value)
+
+
+adc_ns = cg.esphome_ns.namespace('adc')
+ADCSensor = adc_ns.class_('ADCSensor', sensor.PollingSensorComponent)
+
+CONFIG_SCHEMA = cv.nameable(sensor.SENSOR_SCHEMA.extend({
+    cv.GenerateID(): cv.declare_variable_id(ADCSensor),
+    cv.Required(CONF_PIN): validate_adc_pin,
+    cv.Optional(CONF_ATTENUATION): cv.All(cv.only_on_esp32, cv.one_of(*ATTENUATION_MODES,
+                                                                      lower=True)),
+
+    cv.Optional(CONF_UPDATE_INTERVAL, default='60s'): cv.update_interval,
+    cv.Optional(CONF_ICON, default=ICON_FLASH): sensor.icon,
+    cv.Optional(CONF_UNIT_OF_MEASUREMENT, default=UNIT_VOLT): sensor.unit_of_measurement,
+    cv.Optional(CONF_ACCURACY_DECIMALS, default=2): sensor.accuracy_decimals,
+}).extend(cv.COMPONENT_SCHEMA))
+
+
+def to_code(config):
+    pin = config[CONF_PIN]
+    if pin == 'VCC':
+        pin = 0
+
+        cg.add_define('USE_ADC_SENSOR_VCC')
+        cg.add_global(cg.global_ns.ADC_MODE(cg.global_ns.ADC_VCC))
+    rhs = ADCSensor.new(config[CONF_NAME], pin, config[CONF_UPDATE_INTERVAL])
+    adc = cg.Pvariable(config[CONF_ID], rhs)
+    yield cg.register_component(adc, config)
+    yield sensor.register_sensor(adc, config)
+
+    if CONF_ATTENUATION in config:
+        cg.add(adc.set_attenuation(ATTENUATION_MODES[config[CONF_ATTENUATION]]))
--- a/esphome/components/ads1115.py
+++ b/esphome/components/ads1115.py
@@ -1,27 +0,0 @@
-import voluptuous as vol
-
-from esphome.components import i2c, sensor
-import esphome.config_validation as cv
-from esphome.const import CONF_ADDRESS, CONF_ID
-from esphome.cpp_generator import Pvariable
-from esphome.cpp_helpers import setup_component
-from esphome.cpp_types import App, Component
-
-DEPENDENCIES = ['i2c']
-MULTI_CONF = True
-
-ADS1115Component = sensor.sensor_ns.class_('ADS1115Component', Component, i2c.I2CDevice)
-
-CONFIG_SCHEMA = cv.Schema({
-    cv.GenerateID(): cv.declare_variable_id(ADS1115Component),
-    vol.Required(CONF_ADDRESS): cv.i2c_address,
-}).extend(cv.COMPONENT_SCHEMA.schema)
-
-
-def to_code(config):
-    rhs = App.make_ads1115_component(config[CONF_ADDRESS])
-    var = Pvariable(config[CONF_ID], rhs)
-    setup_component(var, config)
-
-
-BUILD_FLAGS = '-DUSE_ADS1115_SENSOR'
--- a/esphome/components/ads1115/init.py
+++ b/esphome/components/ads1115/init.py
@@ -0,0 +1,21 @@
+import esphome.codegen as cg
+import esphome.config_validation as cv
+from esphome.components import i2c
+from esphome.const import CONF_ID
+
+DEPENDENCIES = ['i2c']
+AUTO_LOAD = ['sensor']
+MULTI_CONF = True
+
+ads1115_ns = cg.esphome_ns.namespace('ads1115')
+ADS1115Component = ads1115_ns.class_('ADS1115Component', cg.Component, i2c.I2CDevice)
+
+CONFIG_SCHEMA = cv.Schema({
+    cv.GenerateID(): cv.declare_variable_id(ADS1115Component),
+}).extend(cv.COMPONENT_SCHEMA).extend(i2c.i2c_device_schema(None))
+
+
+def to_code(config):
+    var = cg.new_Pvariable(config[CONF_ID])
+    yield cg.register_component(var, config)
+    yield i2c.register_i2c_device(var, config)
--- a/esphome/components/ads1115/ads1115.cpp
+++ b/esphome/components/ads1115/ads1115.cpp
@@ -0,0 +1,158 @@
+#include "ads1115.h"
+#include "esphome/core/log.h"
+
+namespace esphome {
+namespace ads1115 {
+
+static const char *TAG = "ads1115";
+static const uint8_t ADS1115_REGISTER_CONVERSION = 0x00;
+static const uint8_t ADS1115_REGISTER_CONFIG = 0x01;
+
+static const uint8_t ADS1115_DATA_RATE_860_SPS = 0b111;
+
+void ADS1115Component::setup() {
+  ESP_LOGCONFIG(TAG, "Setting up ADS1115...");
+  uint16_t value;
+  if (!this->read_byte_16(ADS1115_REGISTER_CONVERSION, &value)) {
+    this->mark_failed();
+    return;
+  }
+  uint16_t config = 0;
+  // Clear single-shot bit
+  //        0b0xxxxxxxxxxxxxxx
+  config |= 0b0000000000000000;
+  // Setup multiplexer
+  //        0bx000xxxxxxxxxxxx
+  config |= ADS1115_MULTIPLEXER_P0_N1 << 12;
+
+  // Setup Gain
+  //        0bxxxx000xxxxxxxxx
+  config |= ADS1115_GAIN_6P144 << 9;
+
+  // Set singleshot mode
+  //        0bxxxxxxx1xxxxxxxx
+  config |= 0b0000000100000000;
+
+  // Set data rate - 860 samples per second (we're in singleshot mode)
+  //        0bxxxxxxxx100xxxxx
+  config |= ADS1115_DATA_RATE_860_SPS << 5;
+
+  // Set comparator mode - hysteresis
+  //        0bxxxxxxxxxxx0xxxx
+  config |= 0b0000000000000000;
+
+  // Set comparator polarity - active low
+  //        0bxxxxxxxxxxxx0xxx
+  config |= 0b0000000000000000;
+
+  // Set comparator latch enabled - false
+  //        0bxxxxxxxxxxxxx0xx
+  config |= 0b0000000000000000;
+
+  // Set comparator que mode - disabled
+  //        0bxxxxxxxxxxxxxx11
+  config |= 0b0000000000000011;
+
+  if (!this->write_byte_16(ADS1115_REGISTER_CONFIG, config)) {
+    this->mark_failed();
+    return;
+  }
+  for (auto *sensor : this->sensors_) {
+    this->set_interval(sensor->get_name(), sensor->update_interval(),
+                       [this, sensor] { this->request_measurement_(sensor); });
+  }
+}
+void ADS1115Component::dump_config() {
+  ESP_LOGCONFIG(TAG, "Setting up ADS1115...");
+  LOG_I2C_DEVICE(this);
+  if (this->is_failed()) {
+    ESP_LOGE(TAG, "Communication with ADS1115 failed!");
+  }
+
+  for (auto *sensor : this->sensors_) {
+    LOG_SENSOR("  ", "Sensor", sensor);
+    ESP_LOGCONFIG(TAG, "    Multiplexer: %u", sensor->get_multiplexer());
+    ESP_LOGCONFIG(TAG, "    Gain: %u", sensor->get_gain());
+  }
+}
+float ADS1115Component::get_setup_priority() const { return setup_priority::DATA; }
+void ADS1115Component::request_measurement_(ADS1115Sensor *sensor) {
+  uint16_t config;
+  if (!this->read_byte_16(ADS1115_REGISTER_CONFIG, &config)) {
+    this->status_set_warning();
+    return;
+  }
+  // Multiplexer
+  //        0bxBBBxxxxxxxxxxxx
+  config &= 0b1000111111111111;
+  config |= (sensor->get_multiplexer() & 0b111) << 12;
+
+  // Gain
+  //        0bxxxxBBBxxxxxxxxx
+  config &= 0b1111000111111111;
+  config |= (sensor->get_gain() & 0b111) << 9;
+  // Start conversion
+  config |= 0b1000000000000000;
+
+  if (!this->write_byte_16(ADS1115_REGISTER_CONFIG, config)) {
+    this->status_set_warning();
+    return;
+  }
+
+  // about 1.6 ms with 860 samples per second
+  delay(2);
+
+  uint32_t start = millis();
+  while (this->read_byte_16(ADS1115_REGISTER_CONFIG, &config) && (config >> 15) == 0) {
+    if (millis() - start > 100) {
+      ESP_LOGW(TAG, "Reading ADS1115 timed out");
+      this->status_set_warning();
+      return;
+    }
+    yield();
+  }
+
+  uint16_t raw_conversion;
+  if (!this->read_byte_16(ADS1115_REGISTER_CONVERSION, &raw_conversion)) {
+    this->status_set_warning();
+    return;
+  }
+  auto signed_conversion = static_cast<int16_t>(raw_conversion);
+
+  float millivolts;
+  switch (sensor->get_gain()) {
+    case ADS1115_GAIN_6P144:
+      millivolts = signed_conversion * 0.187500f;
+      break;
+    case ADS1115_GAIN_4P096:
+      millivolts = signed_conversion * 0.125000f;
+      break;
+    case ADS1115_GAIN_2P048:
+      millivolts = signed_conversion * 0.062500f;
+      break;
+    case ADS1115_GAIN_1P024:
+      millivolts = signed_conversion * 0.031250f;
+      break;
+    case ADS1115_GAIN_0P512:
+      millivolts = signed_conversion * 0.015625f;
+      break;
+    case ADS1115_GAIN_0P256:
+      millivolts = signed_conversion * 0.007813f;
+      break;
+    default:
+      millivolts = NAN;
+  }
+
+  float v = millivolts / 1000.0f;
+  ESP_LOGD(TAG, "'%s': Got Voltage=%fV", sensor->get_name().c_str(), v);
+  sensor->publish_state(v);
+  this->status_clear_warning();
+}
+
+uint8_t ADS1115Sensor::get_multiplexer() const { return this->multiplexer_; }
+void ADS1115Sensor::set_multiplexer(ADS1115Multiplexer multiplexer) { this->multiplexer_ = multiplexer; }
+uint8_t ADS1115Sensor::get_gain() const { return this->gain_; }
+void ADS1115Sensor::set_gain(ADS1115Gain gain) { this->gain_ = gain; }
+
+}  // namespace ads1115
+}  // namespace esphome
--- a/esphome/components/ads1115/ads1115.h
+++ b/esphome/components/ads1115/ads1115.h
@@ -0,0 +1,69 @@
+#pragma once
+
+#include "esphome/core/component.h"
+#include "esphome/components/sensor/sensor.h"
+#include "esphome/components/i2c/i2c.h"
+
+namespace esphome {
+namespace ads1115 {
+
+enum ADS1115Multiplexer {
+  ADS1115_MULTIPLEXER_P0_N1 = 0b000,
+  ADS1115_MULTIPLEXER_P0_N3 = 0b001,
+  ADS1115_MULTIPLEXER_P1_N3 = 0b010,
+  ADS1115_MULTIPLEXER_P2_N3 = 0b011,
+  ADS1115_MULTIPLEXER_P0_NG = 0b100,
+  ADS1115_MULTIPLEXER_P1_NG = 0b101,
+  ADS1115_MULTIPLEXER_P2_NG = 0b110,
+  ADS1115_MULTIPLEXER_P3_NG = 0b111,
+};
+
+enum ADS1115Gain {
+  ADS1115_GAIN_6P144 = 0b000,
+  ADS1115_GAIN_4P096 = 0b001,
+  ADS1115_GAIN_2P048 = 0b010,
+  ADS1115_GAIN_1P024 = 0b011,
+  ADS1115_GAIN_0P512 = 0b100,
+  ADS1115_GAIN_0P256 = 0b101,
+};
+
+class ADS1115Sensor;
+
+class ADS1115Component : public Component, public i2c::I2CDevice {
+ public:
+  void register_sensor(ADS1115Sensor *obj) { this->sensors_.push_back(obj); }
+  /// Set up the internal sensor array.
+  void setup() override;
+  void dump_config() override;
+  /// HARDWARE_LATE setup priority
+  float get_setup_priority() const override;
+
+ protected:
+  /// Helper method to request a measurement from a sensor.
+  void request_measurement_(ADS1115Sensor *sensor);
+
+  std::vector<ADS1115Sensor *> sensors_;
+};
+
+/// Internal holder class that is in instance of Sensor so that the hub can create individual sensors.
+class ADS1115Sensor : public sensor::Sensor {
+ public:
+  ADS1115Sensor(const std::string &name, uint32_t update_interval)
+      : sensor::Sensor(name), update_interval_(update_interval) {}
+
+  void set_multiplexer(ADS1115Multiplexer multiplexer);
+  void set_gain(ADS1115Gain gain);
+
+  // ========== INTERNAL METHODS ==========
+  // (In most use cases you won't need these)
+  uint8_t get_multiplexer() const;
+  uint8_t get_gain() const;
+
+ protected:
+  ADS1115Multiplexer multiplexer_;
+  ADS1115Gain gain_;
+  uint32_t update_interval_;
+};
+
+}  // namespace ads1115
+}  // namespace esphome
--- a/esphome/components/ads1115/sensor.py
+++ b/esphome/components/ads1115/sensor.py
@@ -1,16 +1,15 @@
-import voluptuous as vol
-
+import esphome.codegen as cg
+import esphome.config_validation as cv
 from esphome.components import sensor
 from esphome.components.ads1115 import ADS1115Component
-import esphome.config_validation as cv
-from esphome.const import CONF_ADS1115_ID, CONF_GAIN, CONF_MULTIPLEXER, CONF_NAME, \
-    CONF_UPDATE_INTERVAL
-from esphome.cpp_generator import get_variable
+from esphome.const import CONF_GAIN, CONF_MULTIPLEXER, CONF_UPDATE_INTERVAL, \
+    ICON_FLASH, UNIT_VOLT, CONF_ID, CONF_NAME
 from esphome.py_compat import string_types
+from . import ads1115_ns

 DEPENDENCIES = ['ads1115']

-ADS1115Multiplexer = sensor.sensor_ns.enum('ADS1115Multiplexer')
+ADS1115Multiplexer = ads1115_ns.enum('ADS1115Multiplexer')
 MUX = {
    'A0_A1': ADS1115Multiplexer.ADS1115_MULTIPLEXER_P0_N1,
    'A0_A3': ADS1115Multiplexer.ADS1115_MULTIPLEXER_P0_N3,
@@ -22,7 +21,7 @@ MUX = {
    'A3_GND': ADS1115Multiplexer.ADS1115_MULTIPLEXER_P3_NG,
 }

-ADS1115Gain = sensor.sensor_ns.enum('ADS1115Gain')
+ADS1115Gain = ads1115_ns.enum('ADS1115Gain')
 GAIN = {
    '6.144': ADS1115Gain.ADS1115_GAIN_6P144,
    '4.096': ADS1115Gain.ADS1115_GAIN_4P096,
@@ -37,35 +36,29 @@ def validate_gain(value):
    if isinstance(value, float):
        value = u'{:0.03f}'.format(value)
    elif not isinstance(value, string_types):
-        raise vol.Invalid('invalid gain "{}"'.format(value))
+        raise cv.Invalid('invalid gain "{}"'.format(value))

    return cv.one_of(*GAIN)(value)


-def validate_mux(value):
-    value = cv.string(value).upper()
-    value = value.replace(' ', '_')
-    return cv.one_of(*MUX)(value)
+ADS1115Sensor = ads1115_ns.class_('ADS1115Sensor', sensor.Sensor)


-ADS1115Sensor = sensor.sensor_ns.class_('ADS1115Sensor', sensor.EmptySensor)
-
-PLATFORM_SCHEMA = cv.nameable(sensor.SENSOR_PLATFORM_SCHEMA.extend({
+CONF_ADS1115_ID = 'ads1115_id'
+CONFIG_SCHEMA = cv.nameable(sensor.sensor_schema(UNIT_VOLT, ICON_FLASH, 3).extend({
    cv.GenerateID(): cv.declare_variable_id(ADS1115Sensor),
-    vol.Required(CONF_MULTIPLEXER): validate_mux,
-    vol.Required(CONF_GAIN): validate_gain,
    cv.GenerateID(CONF_ADS1115_ID): cv.use_variable_id(ADS1115Component),
-    vol.Optional(CONF_UPDATE_INTERVAL): cv.update_interval,
+    cv.Required(CONF_MULTIPLEXER): cv.one_of(*MUX, upper=True, space='_'),
+    cv.Required(CONF_GAIN): validate_gain,
+    cv.Optional(CONF_UPDATE_INTERVAL, default='60s'): cv.update_interval,
 }))


 def to_code(config):
-    hub = yield get_variable(config[CONF_ADS1115_ID])
+    hub = yield cg.get_variable(config[CONF_ADS1115_ID])
+    var = cg.new_Pvariable(config[CONF_ID], config[CONF_NAME], config[CONF_UPDATE_INTERVAL])
+    cg.add(var.set_multiplexer(MUX[config[CONF_MULTIPLEXER]]))
+    cg.add(var.set_gain(GAIN[config[CONF_GAIN]]))
+    yield sensor.register_sensor(var, config)

-    mux = MUX[config[CONF_MULTIPLEXER]]
-    gain = GAIN[config[CONF_GAIN]]
-    rhs = hub.get_sensor(config[CONF_NAME], mux, gain, config.get(CONF_UPDATE_INTERVAL))
-    sensor.register_sensor(rhs, config)
-
-
-BUILD_FLAGS = '-DUSE_ADS1115_SENSOR'
+    cg.add(hub.register_sensor(var))
--- a/esphome/components/apds9960.py
+++ b/esphome/components/apds9960.py
@@ -1,33 +0,0 @@
-import voluptuous as vol
-
-from esphome.components import i2c, sensor
-import esphome.config_validation as cv
-from esphome.const import CONF_ADDRESS, CONF_ID, CONF_UPDATE_INTERVAL
-from esphome.cpp_generator import Pvariable, add
-from esphome.cpp_helpers import setup_component
-from esphome.cpp_types import App, PollingComponent
-
-DEPENDENCIES = ['i2c']
-MULTI_CONF = True
-
-CONF_APDS9960_ID = 'apds9960_id'
-APDS9960 = sensor.sensor_ns.class_('APDS9960', PollingComponent, i2c.I2CDevice)
-
-CONFIG_SCHEMA = cv.Schema({
-    cv.GenerateID(): cv.declare_variable_id(APDS9960),
-    vol.Optional(CONF_ADDRESS): cv.i2c_address,
-    vol.Optional(CONF_UPDATE_INTERVAL): cv.update_interval,
-}).extend(cv.COMPONENT_SCHEMA.schema)
-
-
-def to_code(config):
-    rhs = App.make_apds9960(config.get(CONF_UPDATE_INTERVAL))
-    var = Pvariable(config[CONF_ID], rhs)
-
-    if CONF_ADDRESS in config:
-        add(var.set_address(config[CONF_ADDRESS]))
-
-    setup_component(var, config)
-
-
-BUILD_FLAGS = '-DUSE_APDS9960'
--- a/esphome/components/apds9960/init.py
+++ b/esphome/components/apds9960/init.py
@@ -0,0 +1,24 @@
+import esphome.codegen as cg
+import esphome.config_validation as cv
+from esphome.components import i2c
+from esphome.const import CONF_ID, CONF_UPDATE_INTERVAL
+
+DEPENDENCIES = ['i2c']
+AUTO_LOAD = ['sensor', 'binary_sensor']
+MULTI_CONF = True
+
+CONF_APDS9960_ID = 'apds9960_id'
+
+apds9960_nds = cg.esphome_ns.namespace('apds9960')
+APDS9960 = apds9960_nds.class_('APDS9960', cg.PollingComponent, i2c.I2CDevice)
+
+CONFIG_SCHEMA = cv.Schema({
+    cv.GenerateID(): cv.declare_variable_id(APDS9960),
+    cv.Optional(CONF_UPDATE_INTERVAL, default='60s'): cv.update_interval,
+}).extend(cv.COMPONENT_SCHEMA).extend(i2c.i2c_device_schema(0x39))
+
+
+def to_code(config):
+    var = cg.new_Pvariable(config[CONF_ID], config[CONF_UPDATE_INTERVAL])
+    yield cg.register_component(var, config)
+    yield i2c.register_i2c_device(var, config)
--- a/esphome/components/apds9960/apds9960.cpp
+++ b/esphome/components/apds9960/apds9960.cpp
@@ -0,0 +1,374 @@
+#include "apds9960.h"
+#include "esphome/core/log.h"
+
+namespace esphome {
+namespace apds9960 {
+
+static const char *TAG = "apds9960";
+
+#define APDS9960_ERROR_CHECK(func) \
+  if (!func) { \
+    this->mark_failed(); \
+    return; \
+  }
+#define APDS9960_WRITE_BYTE(reg, value) APDS9960_ERROR_CHECK(this->write_byte(reg, value));
+
+void APDS9960::setup() {
+  ESP_LOGCONFIG(TAG, "Setting up APDS9960...");
+  uint8_t id;
+  if (!this->read_byte(0x92, &id)) {  // ID register
+    this->error_code_ = COMMUNICATION_FAILED;
+    this->mark_failed();
+    return;
+  }
+
+  if (id != 0xAB && id != 0x9C) {  // APDS9960 all should have one of these IDs
+    this->error_code_ = WRONG_ID;
+    this->mark_failed();
+    return;
+  }
+
+  // ATime (ADC integration time, 2.78ms increments, 0x81) -> 0xDB (103ms)
+  APDS9960_WRITE_BYTE(0x81, 0xDB);
+  // WTime (Wait time, 0x83) -> 0xF6 (27ms)
+  APDS9960_WRITE_BYTE(0x83, 0xF6);
+  // PPulse (0x8E) -> 0x87 (16us, 8 pulses)
+  APDS9960_WRITE_BYTE(0x8E, 0x87);
+  // POffset UR (0x9D) -> 0 (no offset)
+  APDS9960_WRITE_BYTE(0x9D, 0x00);
+  // POffset DL (0x9E) -> 0 (no offset)
+  APDS9960_WRITE_BYTE(0x9E, 0x00);
+  // Config 1 (0x8D) -> 0x60 (no wtime factor)
+  APDS9960_WRITE_BYTE(0x8D, 0x60);
+
+  // Control (0x8F) ->
+  uint8_t val = 0;
+  APDS9960_ERROR_CHECK(this->read_byte(0x8F, &val));
+  val &= 0b00111111;
+  uint8_t led_drive = 0;  // led drive, 0 -> 100mA, 1 -> 50mA, 2 -> 25mA, 3 -> 12.5mA
+  val |= (led_drive & 0b11) << 6;
+
+  val &= 0b11110011;
+  uint8_t proximity_gain = 2;  // proximity gain, 0 -> 1x, 1 -> 2X, 2 -> 4X, 4 -> 8X
+  val |= (proximity_gain & 0b11) << 2;
+
+  val &= 0b11111100;
+  uint8_t ambient_gain = 1;  // ambient light gain, 0 -> 1x, 1 -> 4x, 2 -> 16x, 3 -> 64x
+  val |= (ambient_gain & 0b11) << 0;
+  APDS9960_WRITE_BYTE(0x8F, val);
+
+  // Pers (0x8C) -> 0x11 (2 consecutive proximity or ALS for interrupt)
+  APDS9960_WRITE_BYTE(0x8C, 0x11);
+  // Config 2 (0x90) -> 0x01 (no saturation interrupts or LED boost)
+  APDS9960_WRITE_BYTE(0x90, 0x01);
+  // Config 3 (0x9F) -> 0x00 (enable all photodiodes, no SAI)
+  APDS9960_WRITE_BYTE(0x9F, 0x00);
+  // GPenTh (0xA0, gesture enter threshold) -> 0x28 (also 0x32)
+  APDS9960_WRITE_BYTE(0xA0, 0x28);
+  // GPexTh (0xA1, gesture exit threshold) -> 0x1E
+  APDS9960_WRITE_BYTE(0xA1, 0x1E);
+
+  // GConf 1 (0xA2, gesture config 1) -> 0x40 (4 gesture events for interrupt (GFIFO 3), 1 for exit)
+  APDS9960_WRITE_BYTE(0xA2, 0x40);
+
+  // GConf 2 (0xA3, gesture config 2) ->
+  APDS9960_ERROR_CHECK(this->read_byte(0xA3, &val));
+  val &= 0b10011111;
+  uint8_t gesture_gain = 2;  // gesture gain, 0 -> 1x, 1 -> 2x, 2 -> 4x, 3 -> 8x
+  val |= (gesture_gain & 0b11) << 5;
+
+  val &= 0b11100111;
+  uint8_t gesture_led_drive = 0;  // gesture led drive, 0 -> 100mA, 1 -> 50mA, 2 -> 25mA, 3 -> 12.5mA
+  val |= (gesture_led_drive & 0b11) << 3;
+
+  val &= 0b11111000;
+  // gesture wait time
+  // 0 -> 0ms, 1 -> 2.8ms, 2 -> 5.6ms, 3 -> 8.4ms
+  // 4 -> 14.0ms, 5 -> 22.4 ms, 6 -> 30.8ms, 7 -> 39.2 ms
+  uint8_t gesture_wait_time = 1;  // gesture wait time
+  val |= (gesture_wait_time & 0b111) << 0;
+  APDS9960_WRITE_BYTE(0xA3, val);
+
+  // GOffsetU (0xA4) -> 0x00 (no offset)
+  APDS9960_WRITE_BYTE(0xA4, 0x00);
+  // GOffsetD (0xA5) -> 0x00 (no offset)
+  APDS9960_WRITE_BYTE(0xA5, 0x00);
+  // GOffsetL (0xA7) -> 0x00 (no offset)
+  APDS9960_WRITE_BYTE(0xA7, 0x00);
+  // GOffsetR (0xA9) -> 0x00 (no offset)
+  APDS9960_WRITE_BYTE(0xA9, 0x00);
+  // GPulse (0xA6) -> 0xC9 (32 µs, 10 pulses)
+  APDS9960_WRITE_BYTE(0xA6, 0xC9);
+
+  // GConf 3 (0xAA, gesture config 3) -> 0x00 (all photodiodes active during gesture, all gesture dimensions enabled)
+  // 0x00 -> all dimensions, 0x01 -> up down, 0x02 -> left right
+  APDS9960_WRITE_BYTE(0xAA, 0x00);
+
+  // Enable (0x80) ->
+  val = 0;
+  val |= (0b1) << 0;  // power on
+  val |= (this->is_color_enabled_() & 0b1) << 1;
+  val |= (this->is_proximity_enabled_() & 0b1) << 2;
+  val |= 0b0 << 3;                                  // wait timer disabled
+  val |= 0b0 << 4;                                  // color interrupt disabled
+  val |= 0b0 << 5;                                  // proximity interrupt disabled
+  val |= (this->is_gesture_enabled_() & 0b1) << 6;  // proximity is required for gestures
+  APDS9960_WRITE_BYTE(0x80, val);
+}
+bool APDS9960::is_color_enabled_() const {
+  return this->red_channel_ != nullptr || this->green_channel_ != nullptr || this->blue_channel_ != nullptr ||
+         this->clear_channel_ != nullptr;
+}
+
+void APDS9960::dump_config() {
+  ESP_LOGCONFIG(TAG, "APDS9960:");
+  LOG_I2C_DEVICE(this);
+
+  LOG_UPDATE_INTERVAL(this);
+  if (this->is_failed()) {
+    switch (this->error_code_) {
+      case COMMUNICATION_FAILED:
+        ESP_LOGE(TAG, "Communication with APDS9960 failed!");
+        break;
+      case WRONG_ID:
+        ESP_LOGE(TAG, "APDS9960 has invalid id!");
+        break;
+      default:
+        ESP_LOGE(TAG, "Setting up APDS9960 registers failed!");
+        break;
+    }
+  }
+}
+
+#define APDS9960_WARNING_CHECK(func, warning) \
+  if (!(func)) { \
+    ESP_LOGW(TAG, warning); \
+    this->status_set_warning(); \
+    return; \
+  }
+
+void APDS9960::update() {
+  uint8_t status;
+  APDS9960_WARNING_CHECK(this->read_byte(0x93, &status), "Reading status bit failed.");
+  this->status_clear_warning();
+
+  this->read_color_data_(status);
+  this->read_proximity_data_(status);
+}
+
+void APDS9960::loop() { this->read_gesture_data_(); }
+
+void APDS9960::read_color_data_(uint8_t status) {
+  if (!this->is_color_enabled_())
+    return;
+
+  if ((status & 0x01) == 0x00) {
+    // color data not ready yet.
+    return;
+  }
+
+  uint8_t raw[8];
+  APDS9960_WARNING_CHECK(this->read_bytes(0x94, raw, 8), "Reading color values failed.");
+
+  uint16_t uint_clear = (uint16_t(raw[1]) << 8) | raw[0];
+  uint16_t uint_red = (uint16_t(raw[3]) << 8) | raw[2];
+  uint16_t uint_green = (uint16_t(raw[5]) << 8) | raw[4];
+  uint16_t uint_blue = (uint16_t(raw[7]) << 8) | raw[6];
+
+  float clear_perc = (uint_clear / float(UINT16_MAX)) * 100.0f;
+  float red_perc = (uint_red / float(UINT16_MAX)) * 100.0f;
+  float green_perc = (uint_green / float(UINT16_MAX)) * 100.0f;
+  float blue_perc = (uint_blue / float(UINT16_MAX)) * 100.0f;
+
+  ESP_LOGD(TAG, "Got clear=%.1f%% red=%.1f%% green=%.1f%% blue=%.1f%%", clear_perc, red_perc, green_perc, blue_perc);
+  if (this->clear_channel_ != nullptr)
+    this->clear_channel_->publish_state(clear_perc);
+  if (this->red_channel_ != nullptr)
+    this->red_channel_->publish_state(red_perc);
+  if (this->green_channel_ != nullptr)
+    this->green_channel_->publish_state(green_perc);
+  if (this->blue_channel_ != nullptr)
+    this->blue_channel_->publish_state(blue_perc);
+}
+void APDS9960::read_proximity_data_(uint8_t status) {
+  if (this->proximity_ == nullptr)
+    return;
+
+  if ((status & 0b10) == 0x00) {
+    // proximity data not ready yet.
+    return;
+  }
+
+  uint8_t prox;
+  APDS9960_WARNING_CHECK(this->read_byte(0x9C, &prox), "Reading proximity values failed.");
+
+  float prox_perc = (prox / float(UINT8_MAX)) * 100.0f;
+  ESP_LOGD(TAG, "Got proximity=%.1f%%", prox_perc);
+  this->proximity_->publish_state(prox_perc);
+}
+void APDS9960::read_gesture_data_() {
+  if (!this->is_gesture_enabled_())
+    return;
+
+  uint8_t status;
+  APDS9960_WARNING_CHECK(this->read_byte(0xAF, &status), "Reading gesture status failed.");
+
+  if ((status & 0b01) == 0) {
+    // GVALID is false
+    return;
+  }
+
+  if ((status & 0b10) == 0b10) {
+    ESP_LOGV(TAG, "FIFO buffer has filled to capacity!");
+  }
+
+  uint8_t fifo_level;
+  APDS9960_WARNING_CHECK(this->read_byte(0xAE, &fifo_level), "Reading FIFO level failed.");
+  if (fifo_level == 0)
+    // no data to process
+    return;
+
+  APDS9960_WARNING_CHECK(fifo_level <= 32, "FIFO level has invalid value.")
+
+  uint8_t buf[128];
+  for (uint8_t pos = 0; pos < fifo_level * 4; pos += 32) {
+    // The ESP's i2c driver has a limited buffer size.
+    // This way of retrieving the data should be wrong according to the datasheet
+    // but it seems to work.
+    uint8_t read = std::min(32, fifo_level * 4 - pos);
+    APDS9960_WARNING_CHECK(this->read_bytes(0xFC + pos, buf + pos, read), "Reading FIFO buffer failed.");
+  }
+
+  if (millis() - this->gesture_start_ > 500) {
+    this->gesture_up_started_ = false;
+    this->gesture_down_started_ = false;
+    this->gesture_left_started_ = false;
+    this->gesture_right_started_ = false;
+  }
+
+  for (uint32_t i = 0; i < fifo_level * 4; i += 4) {
+    const int up = buf[i + 0];  // NOLINT
+    const int down = buf[i + 1];
+    const int left = buf[i + 2];
+    const int right = buf[i + 3];
+    this->process_dataset_(up, down, left, right);
+  }
+}
+void APDS9960::report_gesture_(int gesture) {
+  binary_sensor::BinarySensor *bin;
+  switch (gesture) {
+    case 1:
+      bin = this->up_direction_;
+      this->gesture_up_started_ = false;
+      this->gesture_down_started_ = false;
+      ESP_LOGD(TAG, "Got gesture UP");
+      break;
+    case 2:
+      bin = this->down_direction_;
+      this->gesture_up_started_ = false;
+      this->gesture_down_started_ = false;
+      ESP_LOGD(TAG, "Got gesture DOWN");
+      break;
+    case 3:
+      bin = this->left_direction_;
+      this->gesture_left_started_ = false;
+      this->gesture_right_started_ = false;
+      ESP_LOGD(TAG, "Got gesture LEFT");
+      break;
+    case 4:
+      bin = this->right_direction_;
+      this->gesture_left_started_ = false;
+      this->gesture_right_started_ = false;
+      ESP_LOGD(TAG, "Got gesture RIGHT");
+      break;
+    default:
+      return;
+  }
+
+  if (bin != nullptr) {
+    bin->publish_state(true);
+    bin->publish_state(false);
+  }
+}
+void APDS9960::process_dataset_(int up, int down, int left, int right) {
+  /* Algorithm: (see Figure 11 in datasheet)
+   *
+   * Observation: When a gesture is started, we will see a short amount of time where
+   * the photodiode in the direction of the motion has a much higher count value
+   * than where the gesture originates.
+   *
+   * In this algorithm we continually check the difference between the count values of opposing
+   * directions. For example in the down/up direction we continually look at the difference of the
+   * up count and down count. When DOWN gesture begins, this difference will be positive with a
+   * high magnitude for a short amount of time (magic value here is the difference is at least 13).
+   *
+   * If we see such a pattern, we store that we saw the first part of a gesture (the leading edge).
+   * After that some time can pass during which the difference is zero again (though the count values
+   * are not zero). At the end of a gesture, we will see this difference go into the opposite direction
+   * for a short period of time.
+   *
+   * If a gesture is not ended within 500 milliseconds, we consider the initial trailing edge invalid
+   * and reset the state.
+   *
+   * This algorithm does work, but not too well. Some good signal processing algorithms could
+   * probably improve this a lot, especially since the incoming signal has such a characteristic
+   * and quite noise-free pattern.
+   */
+  const int up_down_delta = up - down;
+  const int left_right_delta = left - right;
+  const bool up_down_significant = abs(up_down_delta) > 13;
+  const bool left_right_significant = abs(left_right_delta) > 13;
+
+  if (up_down_significant) {
+    if (up_down_delta < 0) {
+      if (this->gesture_up_started_) {
+        // trailing edge of gesture up
+        this->report_gesture_(1);  // UP
+      } else {
+        // leading edge of gesture down
+        this->gesture_down_started_ = true;
+        this->gesture_start_ = millis();
+      }
+    } else {
+      if (this->gesture_down_started_) {
+        // trailing edge of gesture down
+        this->report_gesture_(2);  // DOWN
+      } else {
+        // leading edge of gesture up
+        this->gesture_up_started_ = true;
+        this->gesture_start_ = millis();
+      }
+    }
+  }
+
+  if (left_right_significant) {
+    if (left_right_delta < 0) {
+      if (this->gesture_left_started_) {
+        // trailing edge of gesture left
+        this->report_gesture_(3);  // LEFT
+      } else {
+        // leading edge of gesture right
+        this->gesture_right_started_ = true;
+        this->gesture_start_ = millis();
+      }
+    } else {
+      if (this->gesture_right_started_) {
+        // trailing edge of gesture right
+        this->report_gesture_(4);  // RIGHT
+      } else {
+        // leading edge of gesture left
+        this->gesture_left_started_ = true;
+        this->gesture_start_ = millis();
+      }
+    }
+  }
+}
+float APDS9960::get_setup_priority() const { return setup_priority::DATA; }
+bool APDS9960::is_proximity_enabled_() const { return this->proximity_ != nullptr || this->is_gesture_enabled_(); }
+bool APDS9960::is_gesture_enabled_() const {
+  return this->up_direction_ != nullptr || this->left_direction_ != nullptr || this->down_direction_ != nullptr ||
+         this->right_direction_ != nullptr;
+}
+
+}  // namespace apds9960
+}  // namespace esphome
--- a/esphome/components/apds9960/apds9960.h
+++ b/esphome/components/apds9960/apds9960.h
@@ -0,0 +1,62 @@
+#pragma once
+
+#include "esphome/core/component.h"
+#include "esphome/components/i2c/i2c.h"
+#include "esphome/components/sensor/sensor.h"
+#include "esphome/components/binary_sensor/binary_sensor.h"
+
+namespace esphome {
+namespace apds9960 {
+
+class APDS9960 : public PollingComponent, public i2c::I2CDevice {
+ public:
+  APDS9960(uint32_t update_interval) : PollingComponent(update_interval) {}
+  void setup() override;
+  void dump_config() override;
+  float get_setup_priority() const override;
+  void update() override;
+  void loop() override;
+
+  void set_red_channel(sensor::Sensor *red_channel) { red_channel_ = red_channel; }
+  void set_green_channel(sensor::Sensor *green_channel) { green_channel_ = green_channel; }
+  void set_blue_channel(sensor::Sensor *blue_channel) { blue_channel_ = blue_channel; }
+  void set_clear_channel(sensor::Sensor *clear_channel) { clear_channel_ = clear_channel; }
+  void set_up_direction(binary_sensor::BinarySensor *up_direction) { up_direction_ = up_direction; }
+  void set_right_direction(binary_sensor::BinarySensor *right_direction) { right_direction_ = right_direction; }
+  void set_down_direction(binary_sensor::BinarySensor *down_direction) { down_direction_ = down_direction; }
+  void set_left_direction(binary_sensor::BinarySensor *left_direction) { left_direction_ = left_direction; }
+  void set_proximity(sensor::Sensor *proximity) { proximity_ = proximity; }
+
+ protected:
+  bool is_color_enabled_() const;
+  bool is_proximity_enabled_() const;
+  bool is_gesture_enabled_() const;
+  void read_color_data_(uint8_t status);
+  void read_proximity_data_(uint8_t status);
+  void read_gesture_data_();
+  void report_gesture_(int gesture);
+  void process_dataset_(int up, int down, int left, int right);
+
+  sensor::Sensor *red_channel_{nullptr};
+  sensor::Sensor *green_channel_{nullptr};
+  sensor::Sensor *blue_channel_{nullptr};
+  sensor::Sensor *clear_channel_{nullptr};
+  binary_sensor::BinarySensor *up_direction_{nullptr};
+  binary_sensor::BinarySensor *right_direction_{nullptr};
+  binary_sensor::BinarySensor *down_direction_{nullptr};
+  binary_sensor::BinarySensor *left_direction_{nullptr};
+  sensor::Sensor *proximity_{nullptr};
+  enum ErrorCode {
+    NONE = 0,
+    COMMUNICATION_FAILED,
+    WRONG_ID,
+  } error_code_{NONE};
+  bool gesture_up_started_{false};
+  bool gesture_down_started_{false};
+  bool gesture_left_started_{false};
+  bool gesture_right_started_{false};
+  uint32_t gesture_start_{0};
+};
+
+}  // namespace apds9960
+}  // namespace esphome
--- a/esphome/components/apds9960/binary_sensor.py
+++ b/esphome/components/apds9960/binary_sensor.py
@@ -0,0 +1,27 @@
+import esphome.codegen as cg
+import esphome.config_validation as cv
+from esphome.components import binary_sensor
+from esphome.const import CONF_DIRECTION, CONF_DEVICE_CLASS, DEVICE_CLASS_MOVING
+from . import APDS9960, CONF_APDS9960_ID
+
+DEPENDENCIES = ['apds9960']
+
+DIRECTIONS = {
+    'UP': 'set_up_direction',
+    'DOWN': 'set_down_direction',
+    'LEFT': 'set_left_direction',
+    'RIGHT': 'set_right_direction',
+}
+
+CONFIG_SCHEMA = cv.nameable(binary_sensor.BINARY_SENSOR_SCHEMA.extend({
+    cv.Required(CONF_DIRECTION): cv.one_of(*DIRECTIONS, upper=True),
+    cv.GenerateID(CONF_APDS9960_ID): cv.use_variable_id(APDS9960),
+    cv.Optional(CONF_DEVICE_CLASS, default=DEVICE_CLASS_MOVING): binary_sensor.device_class,
+}))
+
+
+def to_code(config):
+    hub = yield cg.get_variable(config[CONF_APDS9960_ID])
+    var = yield binary_sensor.new_binary_sensor(config)
+    func = getattr(hub, DIRECTIONS[config[CONF_DIRECTION]])
+    cg.add(func(var))
--- a/esphome/components/apds9960/sensor.py
+++ b/esphome/components/apds9960/sensor.py
@@ -0,0 +1,32 @@
+import esphome.codegen as cg
+import esphome.config_validation as cv
+from esphome.components import sensor
+from esphome.const import CONF_TYPE, CONF_UNIT_OF_MEASUREMENT, CONF_ACCURACY_DECIMALS, CONF_ICON, \
+    UNIT_PERCENT, ICON_LIGHTBULB
+from . import APDS9960, CONF_APDS9960_ID
+
+DEPENDENCIES = ['apds9960']
+
+TYPES = {
+    'CLEAR': 'set_clear_channel',
+    'RED': 'set_red_channel',
+    'GREEN': 'set_green_channel',
+    'BLUE': 'set_blue_channel',
+    'PROXIMITY': 'set_proximity',
+}
+
+CONFIG_SCHEMA = cv.nameable(sensor.SENSOR_SCHEMA.extend({
+    cv.Required(CONF_TYPE): cv.one_of(*TYPES, upper=True),
+    cv.GenerateID(CONF_APDS9960_ID): cv.use_variable_id(APDS9960),
+
+    cv.Optional(CONF_UNIT_OF_MEASUREMENT, default=UNIT_PERCENT): sensor.unit_of_measurement,
+    cv.Optional(CONF_ACCURACY_DECIMALS, default=1): sensor.accuracy_decimals,
+    cv.Optional(CONF_ICON, default=ICON_LIGHTBULB): sensor.icon,
+}))
+
+
+def to_code(config):
+    hub = yield cg.get_variable(config[CONF_APDS9960_ID])
+    var = yield sensor.new_sensor(config)
+    func = getattr(hub, TYPES[config[CONF_TYPE]])
+    cg.add(func(var))
--- a/esphome/components/api/init.py
+++ b/esphome/components/api/init.py
@@ -1,24 +1,20 @@
-import voluptuous as vol

 from esphome import automation
 from esphome.automation import ACTION_REGISTRY, CONDITION_REGISTRY, Condition
 import esphome.config_validation as cv
+import esphome.codegen as cg
 from esphome.const import CONF_DATA, CONF_DATA_TEMPLATE, CONF_ID, CONF_PASSWORD, CONF_PORT, \
    CONF_REBOOT_TIMEOUT, CONF_SERVICE, CONF_VARIABLES, CONF_SERVICES, CONF_TRIGGER_ID
-from esphome.core import CORE
-from esphome.cpp_generator import Pvariable, add, get_variable, process_lambda
-from esphome.cpp_helpers import setup_component
-from esphome.cpp_types import Action, App, Component, StoringController, esphome_ns, Trigger, \
-    bool_, int32, float_, std_string
+from esphome.core import CORE, coroutine_with_priority

-api_ns = esphome_ns.namespace('api')
-APIServer = api_ns.class_('APIServer', Component, StoringController)
-HomeAssistantServiceCallAction = api_ns.class_('HomeAssistantServiceCallAction', Action)
+api_ns = cg.esphome_ns.namespace('api')
+APIServer = api_ns.class_('APIServer', cg.Component, cg.Controller)
+HomeAssistantServiceCallAction = api_ns.class_('HomeAssistantServiceCallAction', cg.Action)
 KeyValuePair = api_ns.class_('KeyValuePair')
 TemplatableKeyValuePair = api_ns.class_('TemplatableKeyValuePair')
 APIConnectedCondition = api_ns.class_('APIConnectedCondition', Condition)

-UserService = api_ns.class_('UserService', Trigger)
+UserService = api_ns.class_('UserService', cg.Trigger)
 ServiceTypeArgument = api_ns.class_('ServiceTypeArgument')
 ServiceArgType = api_ns.enum('ServiceArgType')
 SERVICE_ARG_TYPES = {
@@ -28,38 +24,37 @@ SERVICE_ARG_TYPES = {
    'string': ServiceArgType.SERVICE_ARG_TYPE_STRING,
 }
 SERVICE_ARG_NATIVE_TYPES = {
-    'bool': bool_,
-    'int': int32,
-    'float': float_,
-    'string': std_string,
+    'bool': bool,
+    'int': cg.int32,
+    'float': float,
+    'string': cg.std_string,
 }


 CONFIG_SCHEMA = cv.Schema({
    cv.GenerateID(): cv.declare_variable_id(APIServer),
-    vol.Optional(CONF_PORT, default=6053): cv.port,
-    vol.Optional(CONF_PASSWORD, default=''): cv.string_strict,
-    vol.Optional(CONF_REBOOT_TIMEOUT): cv.positive_time_period_milliseconds,
-    vol.Optional(CONF_SERVICES): automation.validate_automation({
+    cv.Optional(CONF_PORT, default=6053): cv.port,
+    cv.Optional(CONF_PASSWORD, default=''): cv.string_strict,
+    cv.Optional(CONF_REBOOT_TIMEOUT, default='5min'): cv.positive_time_period_milliseconds,
+    cv.Optional(CONF_SERVICES): automation.validate_automation({
        cv.GenerateID(CONF_TRIGGER_ID): cv.declare_variable_id(UserService),
-        vol.Required(CONF_SERVICE): cv.valid_name,
-        vol.Optional(CONF_VARIABLES, default={}): cv.Schema({
+        cv.Required(CONF_SERVICE): cv.valid_name,
+        cv.Optional(CONF_VARIABLES, default={}): cv.Schema({
            cv.validate_id_name: cv.one_of(*SERVICE_ARG_TYPES, lower=True),
        }),
    }),
-}).extend(cv.COMPONENT_SCHEMA.schema)
+}).extend(cv.COMPONENT_SCHEMA)


+@coroutine_with_priority(40.0)
 def to_code(config):
-    rhs = App.init_api_server()
-    api = Pvariable(config[CONF_ID], rhs)
+    rhs = APIServer.new()
+    api = cg.Pvariable(config[CONF_ID], rhs)
+    yield cg.register_component(api, config)

-    if config[CONF_PORT] != 6053:
-        add(api.set_port(config[CONF_PORT]))
-    if config.get(CONF_PASSWORD):
-        add(api.set_password(config[CONF_PASSWORD]))
-    if CONF_REBOOT_TIMEOUT in config:
-        add(api.set_reboot_timeout(config[CONF_REBOOT_TIMEOUT]))
+    cg.add(api.set_port(config[CONF_PORT]))
+    cg.add(api.set_password(config[CONF_PASSWORD]))
+    cg.add(api.set_reboot_timeout(config[CONF_REBOOT_TIMEOUT]))

    for conf in config.get(CONF_SERVICES, []):
        template_args = []
@@ -73,58 +68,51 @@ def to_code(config):
        func = api.make_user_service_trigger.template(*template_args)
        rhs = func(conf[CONF_SERVICE], service_type_args)
        type_ = UserService.template(*template_args)
-        trigger = Pvariable(conf[CONF_TRIGGER_ID], rhs, type=type_)
-        automation.build_automations(trigger, func_args, conf)
+        trigger = cg.Pvariable(conf[CONF_TRIGGER_ID], rhs, type=type_)
+        yield automation.build_automation(trigger, func_args, conf)

-    setup_component(api, config)
-
-
-BUILD_FLAGS = '-DUSE_API'
-
-
-def lib_deps(config):
+    cg.add_define('USE_API')
    if CORE.is_esp32:
-        return 'AsyncTCP@1.0.3'
-    if CORE.is_esp8266:
-        return 'ESPAsyncTCP@1.2.0'
-    raise NotImplementedError
+        cg.add_library('AsyncTCP', '1.0.3')
+    elif CORE.is_esp8266:
+        cg.add_library('ESPAsyncTCP', '1.2.0')


 CONF_HOMEASSISTANT_SERVICE = 'homeassistant.service'
-HOMEASSISTANT_SERVIC_ACTION_SCHEMA = cv.Schema({
+HOMEASSISTANT_SERVICE_ACTION_SCHEMA = cv.Schema({
    cv.GenerateID(): cv.use_variable_id(APIServer),
-    vol.Required(CONF_SERVICE): cv.string,
-    vol.Optional(CONF_DATA): cv.Schema({
+    cv.Required(CONF_SERVICE): cv.string,
+    cv.Optional(CONF_DATA): cv.Schema({
        cv.string: cv.string,
    }),
-    vol.Optional(CONF_DATA_TEMPLATE): cv.Schema({
+    cv.Optional(CONF_DATA_TEMPLATE): cv.Schema({
        cv.string: cv.string,
    }),
-    vol.Optional(CONF_VARIABLES): cv.Schema({
+    cv.Optional(CONF_VARIABLES): cv.Schema({
        cv.string: cv.lambda_,
    }),
 })


-@ACTION_REGISTRY.register(CONF_HOMEASSISTANT_SERVICE, HOMEASSISTANT_SERVIC_ACTION_SCHEMA)
+@ACTION_REGISTRY.register(CONF_HOMEASSISTANT_SERVICE, HOMEASSISTANT_SERVICE_ACTION_SCHEMA)
 def homeassistant_service_to_code(config, action_id, template_arg, args):
-    var = yield get_variable(config[CONF_ID])
-    rhs = var.make_home_assistant_service_call_action(template_arg)
+    var = yield cg.get_variable(config[CONF_ID])
    type = HomeAssistantServiceCallAction.template(template_arg)
-    act = Pvariable(action_id, rhs, type=type)
-    add(act.set_service(config[CONF_SERVICE]))
+    rhs = type.new(var)
+    act = cg.Pvariable(action_id, rhs, type=type)
+    cg.add(act.set_service(config[CONF_SERVICE]))
    if CONF_DATA in config:
        datas = [KeyValuePair(k, v) for k, v in config[CONF_DATA].items()]
-        add(act.set_data(datas))
+        cg.add(act.set_data(datas))
    if CONF_DATA_TEMPLATE in config:
        datas = [KeyValuePair(k, v) for k, v in config[CONF_DATA_TEMPLATE].items()]
-        add(act.set_data_template(datas))
+        cg.add(act.set_data_template(datas))
    if CONF_VARIABLES in config:
        datas = []
        for key, value in config[CONF_VARIABLES].items():
-            value_ = yield process_lambda(value, [])
+            value_ = yield cg.process_lambda(value, [])
            datas.append(TemplatableKeyValuePair(key, value_))
-        add(act.set_variables(datas))
+        cg.add(act.set_variables(datas))
    yield act


@@ -136,4 +124,4 @@ API_CONNECTED_CONDITION_SCHEMA = cv.Schema({})
 def api_connected_to_code(config, condition_id, template_arg, args):
    rhs = APIConnectedCondition.new(template_arg)
    type = APIConnectedCondition.template(template_arg)
-    yield Pvariable(condition_id, rhs, type=type)
+    yield cg.Pvariable(condition_id, rhs, type=type)
--- a/esphome/components/api/api.proto
+++ b/esphome/components/api/api.proto
--- a/esphome/components/api/api_message.cpp
+++ b/esphome/components/api/api_message.cpp
@@ -0,0 +1,87 @@
+#include "api_message.h"
+#include "esphome/core/log.h"
+
+namespace esphome {
+namespace api {
+
+static const char *TAG = "api.message";
+
+bool APIMessage::decode_varint(uint32_t field_id, uint32_t value) { return false; }
+bool APIMessage::decode_length_delimited(uint32_t field_id, const uint8_t *value, size_t len) { return false; }
+bool APIMessage::decode_32bit(uint32_t field_id, uint32_t value) { return false; }
+void APIMessage::encode(APIBuffer &buffer) {}
+void APIMessage::decode(const uint8_t *buffer, size_t length) {
+  uint32_t i = 0;
+  bool error = false;
+  while (i < length) {
+    uint32_t consumed;
+    auto res = proto_decode_varuint32(&buffer[i], length - i, &consumed);
+    if (!res.has_value()) {
+      ESP_LOGV(TAG, "Invalid field start at %u", i);
+      break;
+    }
+
+    uint32_t field_type = (*res) & 0b111;
+    uint32_t field_id = (*res) >> 3;
+    i += consumed;
+
+    switch (field_type) {
+      case 0: {  // VarInt
+        res = proto_decode_varuint32(&buffer[i], length - i, &consumed);
+        if (!res.has_value()) {
+          ESP_LOGV(TAG, "Invalid VarInt at %u", i);
+          error = true;
+          break;
+        }
+        if (!this->decode_varint(field_id, *res)) {
+          ESP_LOGV(TAG, "Cannot decode VarInt field %u with value %u!", field_id, *res);
+        }
+        i += consumed;
+        break;
+      }
+      case 2: {  // Length-delimited
+        res = proto_decode_varuint32(&buffer[i], length - i, &consumed);
+        if (!res.has_value()) {
+          ESP_LOGV(TAG, "Invalid Length Delimited at %u", i);
+          error = true;
+          break;
+        }
+        i += consumed;
+        if (*res > length - i) {
+          ESP_LOGV(TAG, "Out-of-bounds Length Delimited at %u", i);
+          error = true;
+          break;
+        }
+        if (!this->decode_length_delimited(field_id, &buffer[i], *res)) {
+          ESP_LOGV(TAG, "Cannot decode Length Delimited field %u!", field_id);
+        }
+        i += *res;
+        break;
+      }
+      case 5: {  // 32-bit
+        if (length - i < 4) {
+          ESP_LOGV(TAG, "Out-of-bounds Fixed32-bit at %u", i);
+          error = true;
+          break;
+        }
+        uint32_t val = (uint32_t(buffer[i]) << 0) | (uint32_t(buffer[i + 1]) << 8) | (uint32_t(buffer[i + 2]) << 16) |
+                       (uint32_t(buffer[i + 3]) << 24);
+        if (!this->decode_32bit(field_id, val)) {
+          ESP_LOGV(TAG, "Cannot decode 32-bit field %u with value %u!", field_id, val);
+        }
+        i += 4;
+        break;
+      }
+      default:
+        ESP_LOGV(TAG, "Invalid field type at %u", i);
+        error = true;
+        break;
+    }
+    if (error) {
+      break;
+    }
+  }
+}
+
+}  // namespace api
+}  // namespace esphome
--- a/esphome/components/api/api_message.h
+++ b/esphome/components/api/api_message.h
@@ -0,0 +1,79 @@
+#pragma once
+
+#include "esphome/core/component.h"
+#include "util.h"
+
+namespace esphome {
+namespace api {
+
+enum class APIMessageType {
+  HELLO_REQUEST = 1,
+  HELLO_RESPONSE = 2,
+  CONNECT_REQUEST = 3,
+  CONNECT_RESPONSE = 4,
+  DISCONNECT_REQUEST = 5,
+  DISCONNECT_RESPONSE = 6,
+  PING_REQUEST = 7,
+  PING_RESPONSE = 8,
+  DEVICE_INFO_REQUEST = 9,
+  DEVICE_INFO_RESPONSE = 10,
+
+  LIST_ENTITIES_REQUEST = 11,
+  LIST_ENTITIES_BINARY_SENSOR_RESPONSE = 12,
+  LIST_ENTITIES_COVER_RESPONSE = 13,
+  LIST_ENTITIES_FAN_RESPONSE = 14,
+  LIST_ENTITIES_LIGHT_RESPONSE = 15,
+  LIST_ENTITIES_SENSOR_RESPONSE = 16,
+  LIST_ENTITIES_SWITCH_RESPONSE = 17,
+  LIST_ENTITIES_TEXT_SENSOR_RESPONSE = 18,
+  LIST_ENTITIES_SERVICE_RESPONSE = 41,
+  LIST_ENTITIES_CAMERA_RESPONSE = 43,
+  LIST_ENTITIES_CLIMATE_RESPONSE = 46,
+  LIST_ENTITIES_DONE_RESPONSE = 19,
+
+  SUBSCRIBE_STATES_REQUEST = 20,
+  BINARY_SENSOR_STATE_RESPONSE = 21,
+  COVER_STATE_RESPONSE = 22,
+  FAN_STATE_RESPONSE = 23,
+  LIGHT_STATE_RESPONSE = 24,
+  SENSOR_STATE_RESPONSE = 25,
+  SWITCH_STATE_RESPONSE = 26,
+  TEXT_SENSOR_STATE_RESPONSE = 27,
+  CAMERA_IMAGE_RESPONSE = 44,
+  CLIMATE_STATE_RESPONSE = 47,
+
+  SUBSCRIBE_LOGS_REQUEST = 28,
+  SUBSCRIBE_LOGS_RESPONSE = 29,
+
+  COVER_COMMAND_REQUEST = 30,
+  FAN_COMMAND_REQUEST = 31,
+  LIGHT_COMMAND_REQUEST = 32,
+  SWITCH_COMMAND_REQUEST = 33,
+  CAMERA_IMAGE_REQUEST = 45,
+  CLIMATE_COMMAND_REQUEST = 48,
+
+  SUBSCRIBE_SERVICE_CALLS_REQUEST = 34,
+  SERVICE_CALL_RESPONSE = 35,
+  GET_TIME_REQUEST = 36,
+  GET_TIME_RESPONSE = 37,
+
+  SUBSCRIBE_HOME_ASSISTANT_STATES_REQUEST = 38,
+  SUBSCRIBE_HOME_ASSISTANT_STATE_RESPONSE = 39,
+  HOME_ASSISTANT_STATE_RESPONSE = 40,
+
+  EXECUTE_SERVICE_REQUEST = 42,
+};
+
+class APIMessage {
+ public:
+  void decode(const uint8_t *buffer, size_t length);
+  virtual bool decode_varint(uint32_t field_id, uint32_t value);
+  virtual bool decode_length_delimited(uint32_t field_id, const uint8_t *value, size_t len);
+  virtual bool decode_32bit(uint32_t field_id, uint32_t value);
+  virtual APIMessageType message_type() const = 0;
+
+  virtual void encode(APIBuffer &buffer);
+};
+
+}  // namespace api
+}  // namespace esphome
--- a/esphome/components/api/api_server.cpp
+++ b/esphome/components/api/api_server.cpp
--- a/esphome/components/api/api_server.h
+++ b/esphome/components/api/api_server.h
@@ -0,0 +1,245 @@
+#pragma once
+
+#include "esphome/core/component.h"
+#include "esphome/core/controller.h"
+#include "esphome/core/defines.h"
+#include "esphome/core/log.h"
+#include "util.h"
+#include "api_message.h"
+#include "basic_messages.h"
+#include "list_entities.h"
+#include "subscribe_state.h"
+#include "subscribe_logs.h"
+#include "command_messages.h"
+#include "service_call_message.h"
+#include "user_services.h"
+
+#ifdef ARDUINO_ARCH_ESP32
+#include <AsyncTCP.h>
+#endif
+#ifdef ARDUINO_ARCH_ESP8266
+#include <ESPAsyncTCP.h>
+#endif
+
+namespace esphome {
+namespace api {
+
+class APIServer;
+
+class APIConnection {
+ public:
+  APIConnection(AsyncClient *client, APIServer *parent);
+  ~APIConnection();
+
+  void disconnect_client();
+  APIBuffer get_buffer();
+  bool send_buffer(APIMessageType type);
+  bool send_message(APIMessage &msg);
+  bool send_empty_message(APIMessageType type);
+  void loop();
+
+#ifdef USE_BINARY_SENSOR
+  bool send_binary_sensor_state(binary_sensor::BinarySensor *binary_sensor, bool state);
+#endif
+#ifdef USE_COVER
+  bool send_cover_state(cover::Cover *cover);
+#endif
+#ifdef USE_FAN
+  bool send_fan_state(fan::FanState *fan);
+#endif
+#ifdef USE_LIGHT
+  bool send_light_state(light::LightState *light);
+#endif
+#ifdef USE_SENSOR
+  bool send_sensor_state(sensor::Sensor *sensor, float state);
+#endif
+#ifdef USE_SWITCH
+  bool send_switch_state(switch_::Switch *a_switch, bool state);
+#endif
+#ifdef USE_TEXT_SENSOR
+  bool send_text_sensor_state(text_sensor::TextSensor *text_sensor, std::string state);
+#endif
+#ifdef USE_ESP32_CAMERA
+  void send_camera_state(std::shared_ptr<esp32_camera::CameraImage> image);
+#endif
+#ifdef USE_CLIMATE
+  bool send_climate_state(climate::Climate *climate);
+#endif
+  bool send_log_message(int level, const char *tag, const char *line);
+  bool send_disconnect_request();
+  bool send_ping_request();
+  void send_service_call(ServiceCallResponse &call);
+#ifdef USE_HOMEASSISTANT_TIME
+  void send_time_request();
+#endif
+
+ protected:
+  friend APIServer;
+
+  void on_error_(int8_t error);
+  void on_disconnect_();
+  void on_timeout_(uint32_t time);
+  void on_data_(uint8_t *buf, size_t len);
+  void fatal_error_();
+  bool valid_rx_message_type_(uint32_t msg_type);
+  void read_message_(uint32_t size, uint32_t type, uint8_t *msg);
+  void parse_recv_buffer_();
+
+  // request types
+  void on_hello_request_(const HelloRequest &req);
+  void on_connect_request_(const ConnectRequest &req);
+  void on_disconnect_request_(const DisconnectRequest &req);
+  void on_disconnect_response_(const DisconnectResponse &req);
+  void on_ping_request_(const PingRequest &req);
+  void on_ping_response_(const PingResponse &req);
+  void on_device_info_request_(const DeviceInfoRequest &req);
+  void on_list_entities_request_(const ListEntitiesRequest &req);
+  void on_subscribe_states_request_(const SubscribeStatesRequest &req);
+  void on_subscribe_logs_request_(const SubscribeLogsRequest &req);
+#ifdef USE_COVER
+  void on_cover_command_request_(const CoverCommandRequest &req);
+#endif
+#ifdef USE_FAN
+  void on_fan_command_request_(const FanCommandRequest &req);
+#endif
+#ifdef USE_LIGHT
+  void on_light_command_request_(const LightCommandRequest &req);
+#endif
+#ifdef USE_SWITCH
+  void on_switch_command_request_(const SwitchCommandRequest &req);
+#endif
+#ifdef USE_CLIMATE
+  void on_climate_command_request_(const ClimateCommandRequest &req);
+#endif
+  void on_subscribe_service_calls_request_(const SubscribeServiceCallsRequest &req);
+  void on_subscribe_home_assistant_states_request_(const SubscribeHomeAssistantStatesRequest &req);
+  void on_home_assistant_state_response_(const HomeAssistantStateResponse &req);
+  void on_execute_service_(const ExecuteServiceRequest &req);
+#ifdef USE_ESP32_CAMERA
+  void on_camera_image_request_(const CameraImageRequest &req);
+#endif
+
+  enum class ConnectionState {
+    WAITING_FOR_HELLO,
+    WAITING_FOR_CONNECT,
+    CONNECTED,
+  } connection_state_{ConnectionState::WAITING_FOR_HELLO};
+
+  bool remove_{false};
+
+  std::vector<uint8_t> send_buffer_;
+  std::vector<uint8_t> recv_buffer_;
+
+  std::string client_info_;
+#ifdef USE_ESP32_CAMERA
+  esp32_camera::CameraImageReader image_reader_;
+#endif
+
+  bool state_subscription_{false};
+  int log_subscription_{ESPHOME_LOG_LEVEL_NONE};
+  uint32_t last_traffic_;
+  bool sent_ping_{false};
+  bool service_call_subscription_{false};
+  AsyncClient *client_;
+  APIServer *parent_;
+  InitialStateIterator initial_state_iterator_;
+  ListEntitiesIterator list_entities_iterator_;
+};
+
+template<typename... Ts> class HomeAssistantServiceCallAction;
+
+class APIServer : public Component, public Controller {
+ public:
+  APIServer();
+  void setup() override;
+  uint16_t get_port() const;
+  float get_setup_priority() const override;
+  void loop() override;
+  void dump_config() override;
+  void on_shutdown() override;
+  bool check_password(const std::string &password) const;
+  bool uses_password() const;
+  void set_port(uint16_t port);
+  void set_password(const std::string &password);
+  void set_reboot_timeout(uint32_t reboot_timeout);
+  void handle_disconnect(APIConnection *conn);
+#ifdef USE_BINARY_SENSOR
+  void on_binary_sensor_update(binary_sensor::BinarySensor *obj, bool state) override;
+#endif
+#ifdef USE_COVER
+  void on_cover_update(cover::Cover *obj) override;
+#endif
+#ifdef USE_FAN
+  void on_fan_update(fan::FanState *obj) override;
+#endif
+#ifdef USE_LIGHT
+  void on_light_update(light::LightState *obj) override;
+#endif
+#ifdef USE_SENSOR
+  void on_sensor_update(sensor::Sensor *obj, float state) override;
+#endif
+#ifdef USE_SWITCH
+  void on_switch_update(switch_::Switch *obj, bool state) override;
+#endif
+#ifdef USE_TEXT_SENSOR
+  void on_text_sensor_update(text_sensor::TextSensor *obj, std::string state) override;
+#endif
+#ifdef USE_CLIMATE
+  void on_climate_update(climate::Climate *obj) override;
+#endif
+  void send_service_call(ServiceCallResponse &call);
+  void register_user_service(UserServiceDescriptor *descriptor) { this->user_services_.push_back(descriptor); }
+#ifdef USE_HOMEASSISTANT_TIME
+  void request_time();
+#endif
+
+  bool is_connected() const;
+
+  struct HomeAssistantStateSubscription {
+    std::string entity_id;
+    std::function<void(std::string)> callback;
+  };
+
+  void subscribe_home_assistant_state(std::string entity_id, std::function<void(std::string)> f);
+  const std::vector<HomeAssistantStateSubscription> &get_state_subs() const;
+  const std::vector<UserServiceDescriptor *> &get_user_services() const { return this->user_services_; }
+
+ protected:
+  AsyncServer server_{0};
+  uint16_t port_{6053};
+  uint32_t reboot_timeout_{300000};
+  uint32_t last_connected_{0};
+  std::vector<APIConnection *> clients_;
+  std::string password_;
+  std::vector<HomeAssistantStateSubscription> state_subs_;
+  std::vector<UserServiceDescriptor *> user_services_;
+};
+
+extern APIServer *global_api_server;
+
+template<typename... Ts> class HomeAssistantServiceCallAction : public Action<Ts...> {
+ public:
+  explicit HomeAssistantServiceCallAction(APIServer *parent) : parent_(parent) {}
+  void set_service(const std::string &service) { this->resp_.set_service(service); }
+  void set_data(const std::vector<KeyValuePair> &data) { this->resp_.set_data(data); }
+  void set_data_template(const std::vector<KeyValuePair> &data_template) {
+    this->resp_.set_data_template(data_template);
+  }
+  void set_variables(const std::vector<TemplatableKeyValuePair> &variables) { this->resp_.set_variables(variables); }
+  void play(Ts... x) override {
+    this->parent_->send_service_call(this->resp_);
+    this->play_next(x...);
+  }
+
+ protected:
+  APIServer *parent_;
+  ServiceCallResponse resp_;
+};
+
+template<typename... Ts> class APIConnectedCondition : public Condition<Ts...> {
+ public:
+  bool check(Ts... x) override { return global_api_server->is_connected(); }
+};
+
+}  // namespace api
+}  // namespace esphome
--- a/esphome/components/api/basic_messages.cpp
+++ b/esphome/components/api/basic_messages.cpp
@@ -0,0 +1,57 @@
+#include "basic_messages.h"
+#include "esphome/core/log.h"
+
+namespace esphome {
+namespace api {
+
+// Hello
+bool HelloRequest::decode_length_delimited(uint32_t field_id, const uint8_t *value, size_t len) {
+  switch (field_id) {
+    case 1:  // string client_info = 1;
+      this->client_info_ = as_string(value, len);
+      return true;
+    default:
+      return false;
+  }
+}
+const std::string &HelloRequest::get_client_info() const { return this->client_info_; }
+void HelloRequest::set_client_info(const std::string &client_info) { this->client_info_ = client_info; }
+APIMessageType HelloRequest::message_type() const { return APIMessageType::HELLO_REQUEST; }
+
+// Connect
+bool ConnectRequest::decode_length_delimited(uint32_t field_id, const uint8_t *value, size_t len) {
+  switch (field_id) {
+    case 1:  // string password = 1;
+      this->password_ = as_string(value, len);
+      return true;
+    default:
+      return false;
+  }
+}
+const std::string &ConnectRequest::get_password() const { return this->password_; }
+void ConnectRequest::set_password(const std::string &password) { this->password_ = password; }
+APIMessageType ConnectRequest::message_type() const { return APIMessageType::CONNECT_REQUEST; }
+
+APIMessageType DeviceInfoRequest::message_type() const { return APIMessageType::DEVICE_INFO_REQUEST; }
+APIMessageType DisconnectRequest::message_type() const { return APIMessageType::DISCONNECT_REQUEST; }
+bool DisconnectRequest::decode_length_delimited(uint32_t field_id, const uint8_t *value, size_t len) {
+  switch (field_id) {
+    case 1:  // string reason = 1;
+      this->reason_ = as_string(value, len);
+      return true;
+    default:
+      return false;
+  }
+}
+const std::string &DisconnectRequest::get_reason() const { return this->reason_; }
+void DisconnectRequest::set_reason(const std::string &reason) { this->reason_ = reason; }
+void DisconnectRequest::encode(APIBuffer &buffer) {
+  // string reason = 1;
+  buffer.encode_string(1, this->reason_);
+}
+APIMessageType DisconnectResponse::message_type() const { return APIMessageType::DISCONNECT_RESPONSE; }
+APIMessageType PingRequest::message_type() const { return APIMessageType::PING_REQUEST; }
+APIMessageType PingResponse::message_type() const { return APIMessageType::PING_RESPONSE; }
+
+}  // namespace api
+}  // namespace esphome
--- a/esphome/components/api/basic_messages.h
+++ b/esphome/components/api/basic_messages.h
@@ -0,0 +1,63 @@
+#pragma once
+
+#include "api_message.h"
+
+namespace esphome {
+namespace api {
+
+class HelloRequest : public APIMessage {
+ public:
+  bool decode_length_delimited(uint32_t field_id, const uint8_t *value, size_t len) override;
+  const std::string &get_client_info() const;
+  void set_client_info(const std::string &client_info);
+  APIMessageType message_type() const override;
+
+ protected:
+  std::string client_info_;
+};
+
+class ConnectRequest : public APIMessage {
+ public:
+  bool decode_length_delimited(uint32_t field_id, const uint8_t *value, size_t len) override;
+  const std::string &get_password() const;
+  void set_password(const std::string &password);
+  APIMessageType message_type() const override;
+
+ protected:
+  std::string password_;
+};
+
+class DeviceInfoRequest : public APIMessage {
+ public:
+  APIMessageType message_type() const override;
+};
+
+class DisconnectRequest : public APIMessage {
+ public:
+  bool decode_length_delimited(uint32_t field_id, const uint8_t *value, size_t len) override;
+  void encode(APIBuffer &buffer) override;
+  APIMessageType message_type() const override;
+  const std::string &get_reason() const;
+  void set_reason(const std::string &reason);
+
+ protected:
+  std::string reason_;
+};
+
+class DisconnectResponse : public APIMessage {
+ public:
+  APIMessageType message_type() const override;
+};
+
+class PingRequest : public APIMessage {
+ public:
+  APIMessageType message_type() const override;
+};
+
+class PingResponse : public APIMessage {
+ public:
+  APIMessageType message_type() const override;
+};
+
+}  // namespace api
+}  // namespace esphome
--- a/esphome/components/api/command_messages.cpp
+++ b/esphome/components/api/command_messages.cpp
@@ -0,0 +1,417 @@
+#include "command_messages.h"
+#include "esphome/core/log.h"
+
+namespace esphome {
+namespace api {
+
+#ifdef USE_COVER
+bool CoverCommandRequest::decode_varint(uint32_t field_id, uint32_t value) {
+  switch (field_id) {
+    case 2:
+      // bool has_legacy_command = 2;
+      this->has_legacy_command_ = value;
+      return true;
+    case 3:
+      // enum LegacyCoverCommand {
+      //   OPEN = 0;
+      //   CLOSE = 1;
+      //   STOP = 2;
+      // }
+      // LegacyCoverCommand legacy_command_ = 3;
+      this->legacy_command_ = static_cast<LegacyCoverCommand>(value);
+      return true;
+    case 4:
+      // bool has_position = 4;
+      this->has_position_ = value;
+      return true;
+    case 6:
+      // bool has_tilt = 6;
+      this->has_tilt_ = value;
+      return true;
+    case 8:
+      // bool stop = 8;
+      this->stop_ = value;
+    default:
+      return false;
+  }
+}
+bool CoverCommandRequest::decode_32bit(uint32_t field_id, uint32_t value) {
+  switch (field_id) {
+    case 1:
+      // fixed32 key = 1;
+      this->key_ = value;
+      return true;
+    case 5:
+      // float position = 5;
+      this->position_ = as_float(value);
+      return true;
+    case 7:
+      // float tilt = 7;
+      this->tilt_ = as_float(value);
+      return true;
+    default:
+      return false;
+  }
+}
+APIMessageType CoverCommandRequest::message_type() const { return APIMessageType ::COVER_COMMAND_REQUEST; }
+uint32_t CoverCommandRequest::get_key() const { return this->key_; }
+optional<LegacyCoverCommand> CoverCommandRequest::get_legacy_command() const {
+  if (!this->has_legacy_command_)
+    return {};
+  return this->legacy_command_;
+}
+optional<float> CoverCommandRequest::get_position() const {
+  if (!this->has_position_)
+    return {};
+  return this->position_;
+}
+optional<float> CoverCommandRequest::get_tilt() const {
+  if (!this->has_tilt_)
+    return {};
+  return this->tilt_;
+}
+#endif
+
+#ifdef USE_FAN
+bool FanCommandRequest::decode_varint(uint32_t field_id, uint32_t value) {
+  switch (field_id) {
+    case 2:
+      // bool has_state = 2;
+      this->has_state_ = value;
+      return true;
+    case 3:
+      // bool state = 3;
+      this->state_ = value;
+      return true;
+    case 4:
+      // bool has_speed = 4;
+      this->has_speed_ = value;
+      return true;
+    case 5:
+      // FanSpeed speed = 5;
+      this->speed_ = static_cast<fan::FanSpeed>(value);
+      return true;
+    case 6:
+      // bool has_oscillating = 6;
+      this->has_oscillating_ = value;
+      return true;
+    case 7:
+      // bool oscillating = 7;
+      this->oscillating_ = value;
+      return true;
+    default:
+      return false;
+  }
+}
+bool FanCommandRequest::decode_32bit(uint32_t field_id, uint32_t value) {
+  switch (field_id) {
+    case 1:
+      // fixed32 key = 1;
+      this->key_ = value;
+      return true;
+    default:
+      return false;
+  }
+}
+APIMessageType FanCommandRequest::message_type() const { return APIMessageType::FAN_COMMAND_REQUEST; }
+uint32_t FanCommandRequest::get_key() const { return this->key_; }
+optional<bool> FanCommandRequest::get_state() const {
+  if (!this->has_state_)
+    return {};
+  return this->state_;
+}
+optional<fan::FanSpeed> FanCommandRequest::get_speed() const {
+  if (!this->has_speed_)
+    return {};
+  return this->speed_;
+}
+optional<bool> FanCommandRequest::get_oscillating() const {
+  if (!this->has_oscillating_)
+    return {};
+  return this->oscillating_;
+}
+#endif
+
+#ifdef USE_LIGHT
+bool LightCommandRequest::decode_varint(uint32_t field_id, uint32_t value) {
+  switch (field_id) {
+    case 2:
+      // bool has_state = 2;
+      this->has_state_ = value;
+      return true;
+    case 3:
+      // bool state = 3;
+      this->state_ = value;
+      return true;
+    case 4:
+      // bool has_brightness = 4;
+      this->has_brightness_ = value;
+      return true;
+    case 6:
+      // bool has_rgb = 6;
+      this->has_rgb_ = value;
+      return true;
+    case 10:
+      // bool has_white = 10;
+      this->has_white_ = value;
+      return true;
+    case 12:
+      // bool has_color_temperature = 12;
+      this->has_color_temperature_ = value;
+      return true;
+    case 14:
+      // bool has_transition_length = 14;
+      this->has_transition_length_ = value;
+      return true;
+    case 15:
+      // uint32 transition_length = 15;
+      this->transition_length_ = value;
+      return true;
+    case 16:
+      // bool has_flash_length = 16;
+      this->has_flash_length_ = value;
+      return true;
+    case 17:
+      // uint32 flash_length = 17;
+      this->flash_length_ = value;
+      return true;
+    case 18:
+      // bool has_effect = 18;
+      this->has_effect_ = value;
+      return true;
+    default:
+      return false;
+  }
+}
+bool LightCommandRequest::decode_length_delimited(uint32_t field_id, const uint8_t *value, size_t len) {
+  switch (field_id) {
+    case 19:
+      // string effect = 19;
+      this->effect_ = as_string(value, len);
+      return true;
+    default:
+      return false;
+  }
+}
+bool LightCommandRequest::decode_32bit(uint32_t field_id, uint32_t value) {
+  switch (field_id) {
+    case 1:
+      // fixed32 key = 1;
+      this->key_ = value;
+      return true;
+    case 5:
+      // float brightness = 5;
+      this->brightness_ = as_float(value);
+      return true;
+    case 7:
+      // float red = 7;
+      this->red_ = as_float(value);
+      return true;
+    case 8:
+      // float green = 8;
+      this->green_ = as_float(value);
+      return true;
+    case 9:
+      // float blue = 9;
+      this->blue_ = as_float(value);
+      return true;
+    case 11:
+      // float white = 11;
+      this->white_ = as_float(value);
+      return true;
+    case 13:
+      // float color_temperature = 13;
+      this->color_temperature_ = as_float(value);
+      return true;
+    default:
+      return false;
+  }
+}
+APIMessageType LightCommandRequest::message_type() const { return APIMessageType::LIGHT_COMMAND_REQUEST; }
+uint32_t LightCommandRequest::get_key() const { return this->key_; }
+optional<bool> LightCommandRequest::get_state() const {
+  if (!this->has_state_)
+    return {};
+  return this->state_;
+}
+optional<float> LightCommandRequest::get_brightness() const {
+  if (!this->has_brightness_)
+    return {};
+  return this->brightness_;
+}
+optional<float> LightCommandRequest::get_red() const {
+  if (!this->has_rgb_)
+    return {};
+  return this->red_;
+}
+optional<float> LightCommandRequest::get_green() const {
+  if (!this->has_rgb_)
+    return {};
+  return this->green_;
+}
+optional<float> LightCommandRequest::get_blue() const {
+  if (!this->has_rgb_)
+    return {};
+  return this->blue_;
+}
+optional<float> LightCommandRequest::get_white() const {
+  if (!this->has_white_)
+    return {};
+  return this->white_;
+}
+optional<float> LightCommandRequest::get_color_temperature() const {
+  if (!this->has_color_temperature_)
+    return {};
+  return this->color_temperature_;
+}
+optional<uint32_t> LightCommandRequest::get_transition_length() const {
+  if (!this->has_transition_length_)
+    return {};
+  return this->transition_length_;
+}
+optional<uint32_t> LightCommandRequest::get_flash_length() const {
+  if (!this->has_flash_length_)
+    return {};
+  return this->flash_length_;
+}
+optional<std::string> LightCommandRequest::get_effect() const {
+  if (!this->has_effect_)
+    return {};
+  return this->effect_;
+}
+#endif
+
+#ifdef USE_SWITCH
+bool SwitchCommandRequest::decode_varint(uint32_t field_id, uint32_t value) {
+  switch (field_id) {
+    case 2:
+      // bool state = 2;
+      this->state_ = value;
+      return true;
+    default:
+      return false;
+  }
+}
+bool SwitchCommandRequest::decode_32bit(uint32_t field_id, uint32_t value) {
+  switch (field_id) {
+    case 1:
+      // fixed32 key = 1;
+      this->key_ = value;
+      return true;
+    default:
+      return false;
+  }
+}
+APIMessageType SwitchCommandRequest::message_type() const { return APIMessageType::SWITCH_COMMAND_REQUEST; }
+uint32_t SwitchCommandRequest::get_key() const { return this->key_; }
+bool SwitchCommandRequest::get_state() const { return this->state_; }
+#endif
+
+#ifdef USE_ESP32_CAMERA
+bool CameraImageRequest::get_single() const { return this->single_; }
+bool CameraImageRequest::get_stream() const { return this->stream_; }
+bool CameraImageRequest::decode_varint(uint32_t field_id, uint32_t value) {
+  switch (field_id) {
+    case 1:
+      // bool single = 1;
+      this->single_ = value;
+      return true;
+    case 2:
+      // bool stream = 2;
+      this->stream_ = value;
+      return true;
+    default:
+      return false;
+  }
+}
+APIMessageType CameraImageRequest::message_type() const { return APIMessageType::CAMERA_IMAGE_REQUEST; }
+#endif
+
+#ifdef USE_CLIMATE
+bool ClimateCommandRequest::decode_varint(uint32_t field_id, uint32_t value) {
+  switch (field_id) {
+    case 2:
+      // bool has_mode = 2;
+      this->has_mode_ = value;
+      return true;
+    case 3:
+      // ClimateMode mode = 3;
+      this->mode_ = static_cast<climate::ClimateMode>(value);
+      return true;
+    case 4:
+      // bool has_target_temperature = 4;
+      this->has_target_temperature_ = value;
+      return true;
+    case 6:
+      // bool has_target_temperature_low = 6;
+      this->has_target_temperature_low_ = value;
+      return true;
+    case 8:
+      // bool has_target_temperature_high = 8;
+      this->has_target_temperature_high_ = value;
+      return true;
+    case 10:
+      // bool has_away = 10;
+      this->has_away_ = value;
+      return true;
+    case 11:
+      // bool away = 11;
+      this->away_ = value;
+      return true;
+    default:
+      return false;
+  }
+}
+bool ClimateCommandRequest::decode_32bit(uint32_t field_id, uint32_t value) {
+  switch (field_id) {
+    case 1:
+      // fixed32 key = 1;
+      this->key_ = value;
+      return true;
+    case 5:
+      // float target_temperature = 5;
+      this->target_temperature_ = as_float(value);
+      return true;
+    case 7:
+      // float target_temperature_low = 7;
+      this->target_temperature_low_ = as_float(value);
+      return true;
+    case 9:
+      // float target_temperature_high = 9;
+      this->target_temperature_high_ = as_float(value);
+      return true;
+    default:
+      return false;
+  }
+}
+APIMessageType ClimateCommandRequest::message_type() const { return APIMessageType::CLIMATE_COMMAND_REQUEST; }
+uint32_t ClimateCommandRequest::get_key() const { return this->key_; }
+optional<climate::ClimateMode> ClimateCommandRequest::get_mode() const {
+  if (!this->has_mode_)
+    return {};
+  return this->mode_;
+}
+optional<float> ClimateCommandRequest::get_target_temperature() const {
+  if (!this->has_target_temperature_)
+    return {};
+  return this->target_temperature_;
+}
+optional<float> ClimateCommandRequest::get_target_temperature_low() const {
+  if (!this->has_target_temperature_low_)
+    return {};
+  return this->target_temperature_low_;
+}
+optional<float> ClimateCommandRequest::get_target_temperature_high() const {
+  if (!this->has_target_temperature_high_)
+    return {};
+  return this->target_temperature_high_;
+}
+optional<bool> ClimateCommandRequest::get_away() const {
+  if (!this->has_away_)
+    return {};
+  return this->away_;
+}
+#endif
+
+}  // namespace api
+}  // namespace esphome
--- a/esphome/components/api/command_messages.h
+++ b/esphome/components/api/command_messages.h
@@ -0,0 +1,162 @@
+#pragma once
+
+#include "esphome/core/component.h"
+#include "esphome/core/defines.h"
+#include "api_message.h"
+
+namespace esphome {
+namespace api {
+
+#ifdef USE_COVER
+enum LegacyCoverCommand {
+  LEGACY_COVER_COMMAND_OPEN = 0,
+  LEGACY_COVER_COMMAND_CLOSE = 1,
+  LEGACY_COVER_COMMAND_STOP = 2,
+};
+
+class CoverCommandRequest : public APIMessage {
+ public:
+  bool decode_varint(uint32_t field_id, uint32_t value) override;
+  bool decode_32bit(uint32_t field_id, uint32_t value) override;
+  APIMessageType message_type() const override;
+  uint32_t get_key() const;
+  optional<LegacyCoverCommand> get_legacy_command() const;
+  optional<float> get_position() const;
+  optional<float> get_tilt() const;
+  bool get_stop() const { return this->stop_; }
+
+ protected:
+  uint32_t key_{0};
+  bool has_legacy_command_{false};
+  LegacyCoverCommand legacy_command_{LEGACY_COVER_COMMAND_OPEN};
+  bool has_position_{false};
+  float position_{0.0f};
+  bool has_tilt_{false};
+  float tilt_{0.0f};
+  bool stop_{false};
+};
+#endif
+
+#ifdef USE_FAN
+class FanCommandRequest : public APIMessage {
+ public:
+  bool decode_varint(uint32_t field_id, uint32_t value) override;
+  bool decode_32bit(uint32_t field_id, uint32_t value) override;
+  APIMessageType message_type() const override;
+  uint32_t get_key() const;
+  optional<bool> get_state() const;
+  optional<fan::FanSpeed> get_speed() const;
+  optional<bool> get_oscillating() const;
+
+ protected:
+  uint32_t key_{0};
+  bool has_state_{false};
+  bool state_{false};
+  bool has_speed_{false};
+  fan::FanSpeed speed_{fan::FAN_SPEED_LOW};
+  bool has_oscillating_{false};
+  bool oscillating_{false};
+};
+#endif
+
+#ifdef USE_LIGHT
+class LightCommandRequest : public APIMessage {
+ public:
+  bool decode_varint(uint32_t field_id, uint32_t value) override;
+  bool decode_length_delimited(uint32_t field_id, const uint8_t *value, size_t len) override;
+  bool decode_32bit(uint32_t field_id, uint32_t value) override;
+  APIMessageType message_type() const override;
+  uint32_t get_key() const;
+  optional<bool> get_state() const;
+  optional<float> get_brightness() const;
+  optional<float> get_red() const;
+  optional<float> get_green() const;
+  optional<float> get_blue() const;
+  optional<float> get_white() const;
+  optional<float> get_color_temperature() const;
+  optional<uint32_t> get_transition_length() const;
+  optional<uint32_t> get_flash_length() const;
+  optional<std::string> get_effect() const;
+
+ protected:
+  uint32_t key_{0};
+  bool has_state_{false};
+  bool state_{false};
+  bool has_brightness_{false};
+  float brightness_{0.0f};
+  bool has_rgb_{false};
+  float red_{0.0f};
+  float green_{0.0f};
+  float blue_{0.0f};
+  bool has_white_{false};
+  float white_{0.0f};
+  bool has_color_temperature_{false};
+  float color_temperature_{0.0f};
+  bool has_transition_length_{false};
+  uint32_t transition_length_{0};
+  bool has_flash_length_{false};
+  uint32_t flash_length_{0};
+  bool has_effect_{false};
+  std::string effect_{};
+};
+#endif
+
+#ifdef USE_SWITCH
+class SwitchCommandRequest : public APIMessage {
+ public:
+  bool decode_varint(uint32_t field_id, uint32_t value) override;
+  bool decode_32bit(uint32_t field_id, uint32_t value) override;
+  APIMessageType message_type() const override;
+  uint32_t get_key() const;
+  bool get_state() const;
+
+ protected:
+  uint32_t key_{0};
+  bool state_{false};
+};
+#endif
+
+#ifdef USE_ESP32_CAMERA
+class CameraImageRequest : public APIMessage {
+ public:
+  bool decode_varint(uint32_t field_id, uint32_t value) override;
+  bool get_single() const;
+  bool get_stream() const;
+  APIMessageType message_type() const override;
+
+ protected:
+  bool single_{false};
+  bool stream_{false};
+};
+#endif
+
+#ifdef USE_CLIMATE
+class ClimateCommandRequest : public APIMessage {
+ public:
+  bool decode_varint(uint32_t field_id, uint32_t value) override;
+  bool decode_32bit(uint32_t field_id, uint32_t value) override;
+  APIMessageType message_type() const override;
+  uint32_t get_key() const;
+  optional<climate::ClimateMode> get_mode() const;
+  optional<float> get_target_temperature() const;
+  optional<float> get_target_temperature_low() const;
+  optional<float> get_target_temperature_high() const;
+  optional<bool> get_away() const;
+
+ protected:
+  uint32_t key_{0};
+  bool has_mode_{false};
+  climate::ClimateMode mode_{climate::CLIMATE_MODE_OFF};
+  bool has_target_temperature_{false};
+  float target_temperature_{0.0f};
+  bool has_target_temperature_low_{false};
+  float target_temperature_low_{0.0f};
+  bool has_target_temperature_high_{false};
+  float target_temperature_high_{0.0f};
+  bool has_away_{false};
+  bool away_{false};
+};
+#endif
+
+}  // namespace api
+}  // namespace esphome
--- a/esphome/components/api/list_entities.cpp
+++ b/esphome/components/api/list_entities.cpp
@@ -0,0 +1,190 @@
+#include "list_entities.h"
+#include "esphome/core/util.h"
+#include "esphome/core/log.h"
+#include "esphome/core/application.h"
+
+namespace esphome {
+namespace api {
+
+std::string get_default_unique_id(const std::string &component_type, Nameable *nameable) {
+  return App.get_name() + component_type + nameable->get_object_id();
+}
+
+#ifdef USE_BINARY_SENSOR
+bool ListEntitiesIterator::on_binary_sensor(binary_sensor::BinarySensor *binary_sensor) {
+  auto buffer = this->client_->get_buffer();
+  buffer.encode_nameable(binary_sensor);
+  // string unique_id = 4;
+  buffer.encode_string(4, get_default_unique_id("binary_sensor", binary_sensor));
+  // string device_class = 5;
+  buffer.encode_string(5, binary_sensor->get_device_class());
+  // bool is_status_binary_sensor = 6;
+  buffer.encode_bool(6, binary_sensor->is_status_binary_sensor());
+  return this->client_->send_buffer(APIMessageType::LIST_ENTITIES_BINARY_SENSOR_RESPONSE);
+}
+#endif
+#ifdef USE_COVER
+bool ListEntitiesIterator::on_cover(cover::Cover *cover) {
+  auto buffer = this->client_->get_buffer();
+  buffer.encode_nameable(cover);
+  // string unique_id = 4;
+  buffer.encode_string(4, get_default_unique_id("cover", cover));
+  auto traits = cover->get_traits();
+
+  // bool assumed_state = 5;
+  buffer.encode_bool(5, traits.get_is_assumed_state());
+  // bool supports_position = 6;
+  buffer.encode_bool(6, traits.get_supports_position());
+  // bool supports_tilt = 7;
+  buffer.encode_bool(7, traits.get_supports_tilt());
+  // string device_class = 8;
+  buffer.encode_string(8, cover->get_device_class());
+  return this->client_->send_buffer(APIMessageType::LIST_ENTITIES_COVER_RESPONSE);
+}
+#endif
+#ifdef USE_FAN
+bool ListEntitiesIterator::on_fan(fan::FanState *fan) {
+  auto buffer = this->client_->get_buffer();
+  buffer.encode_nameable(fan);
+  // string unique_id = 4;
+  buffer.encode_string(4, get_default_unique_id("fan", fan));
+  // bool supports_oscillation = 5;
+  buffer.encode_bool(5, fan->get_traits().supports_oscillation());
+  // bool supports_speed = 6;
+  buffer.encode_bool(6, fan->get_traits().supports_speed());
+  return this->client_->send_buffer(APIMessageType::LIST_ENTITIES_FAN_RESPONSE);
+}
+#endif
+#ifdef USE_LIGHT
+bool ListEntitiesIterator::on_light(light::LightState *light) {
+  auto buffer = this->client_->get_buffer();
+  buffer.encode_nameable(light);
+  // string unique_id = 4;
+  buffer.encode_string(4, get_default_unique_id("light", light));
+  // bool supports_brightness = 5;
+  auto traits = light->get_traits();
+  buffer.encode_bool(5, traits.get_supports_brightness());
+  // bool supports_rgb = 6;
+  buffer.encode_bool(6, traits.get_supports_rgb());
+  // bool supports_white_value = 7;
+  buffer.encode_bool(7, traits.get_supports_rgb_white_value());
+  // bool supports_color_temperature = 8;
+  buffer.encode_bool(8, traits.get_supports_color_temperature());
+  if (traits.get_supports_color_temperature()) {
+    // float min_mireds = 9;
+    buffer.encode_float(9, traits.get_min_mireds());
+    // float max_mireds = 10;
+    buffer.encode_float(10, traits.get_max_mireds());
+  }
+  // repeated string effects = 11;
+  if (light->supports_effects()) {
+    buffer.encode_string(11, "None");
+    for (auto *effect : light->get_effects()) {
+      buffer.encode_string(11, effect->get_name());
+    }
+  }
+  return this->client_->send_buffer(APIMessageType::LIST_ENTITIES_LIGHT_RESPONSE);
+}
+#endif
+#ifdef USE_SENSOR
+bool ListEntitiesIterator::on_sensor(sensor::Sensor *sensor) {
+  auto buffer = this->client_->get_buffer();
+  buffer.encode_nameable(sensor);
+  // string unique_id = 4;
+  std::string unique_id = sensor->unique_id();
+  if (unique_id.empty())
+    unique_id = get_default_unique_id("sensor", sensor);
+  buffer.encode_string(4, unique_id);
+  // string icon = 5;
+  buffer.encode_string(5, sensor->get_icon());
+  // string unit_of_measurement = 6;
+  buffer.encode_string(6, sensor->get_unit_of_measurement());
+  // int32 accuracy_decimals = 7;
+  buffer.encode_int32(7, sensor->get_accuracy_decimals());
+  return this->client_->send_buffer(APIMessageType::LIST_ENTITIES_SENSOR_RESPONSE);
+}
+#endif
+#ifdef USE_SWITCH
+bool ListEntitiesIterator::on_switch(switch_::Switch *a_switch) {
+  auto buffer = this->client_->get_buffer();
+  buffer.encode_nameable(a_switch);
+  // string unique_id = 4;
+  buffer.encode_string(4, get_default_unique_id("switch", a_switch));
+  // string icon = 5;
+  buffer.encode_string(5, a_switch->get_icon());
+  // bool assumed_state = 6;
+  buffer.encode_bool(6, a_switch->assumed_state());
+  return this->client_->send_buffer(APIMessageType::LIST_ENTITIES_SWITCH_RESPONSE);
+}
+#endif
+#ifdef USE_TEXT_SENSOR
+bool ListEntitiesIterator::on_text_sensor(text_sensor::TextSensor *text_sensor) {
+  auto buffer = this->client_->get_buffer();
+  buffer.encode_nameable(text_sensor);
+  // string unique_id = 4;
+  std::string unique_id = text_sensor->unique_id();
+  if (unique_id.empty())
+    unique_id = get_default_unique_id("text_sensor", text_sensor);
+  buffer.encode_string(4, unique_id);
+  // string icon = 5;
+  buffer.encode_string(5, text_sensor->get_icon());
+  return this->client_->send_buffer(APIMessageType::LIST_ENTITIES_TEXT_SENSOR_RESPONSE);
+}
+#endif
+
+bool ListEntitiesIterator::on_end() {
+  return this->client_->send_empty_message(APIMessageType::LIST_ENTITIES_DONE_RESPONSE);
+}
+ListEntitiesIterator::ListEntitiesIterator(APIServer *server, APIConnection *client)
+    : ComponentIterator(server), client_(client) {}
+bool ListEntitiesIterator::on_service(UserServiceDescriptor *service) {
+  auto buffer = this->client_->get_buffer();
+  service->encode_list_service_response(buffer);
+  return this->client_->send_buffer(APIMessageType::LIST_ENTITIES_SERVICE_RESPONSE);
+}
+
+#ifdef USE_ESP32_CAMERA
+bool ListEntitiesIterator::on_camera(esp32_camera::ESP32Camera *camera) {
+  auto buffer = this->client_->get_buffer();
+  buffer.encode_nameable(camera);
+  // string unique_id = 4;
+  buffer.encode_string(4, get_default_unique_id("camera", camera));
+  return this->client_->send_buffer(APIMessageType::LIST_ENTITIES_CAMERA_RESPONSE);
+}
+#endif
+
+#ifdef USE_CLIMATE
+bool ListEntitiesIterator::on_climate(climate::Climate *climate) {
+  auto buffer = this->client_->get_buffer();
+  buffer.encode_nameable(climate);
+  // string unique_id = 4;
+  buffer.encode_string(4, get_default_unique_id("climate", climate));
+
+  auto traits = climate->get_traits();
+  // bool supports_current_temperature = 5;
+  buffer.encode_bool(5, traits.get_supports_current_temperature());
+  // bool supports_two_point_target_temperature = 6;
+  buffer.encode_bool(6, traits.get_supports_two_point_target_temperature());
+  // repeated ClimateMode supported_modes = 7;
+  for (auto mode : {climate::CLIMATE_MODE_AUTO, climate::CLIMATE_MODE_OFF, climate::CLIMATE_MODE_COOL,
+                    climate::CLIMATE_MODE_HEAT}) {
+    if (traits.supports_mode(mode))
+      buffer.encode_uint32(7, mode, true);
+  }
+
+  // float visual_min_temperature = 8;
+  buffer.encode_float(8, traits.get_visual_min_temperature());
+  // float visual_max_temperature = 9;
+  buffer.encode_float(9, traits.get_visual_max_temperature());
+  // float visual_temperature_step = 10;
+  buffer.encode_float(10, traits.get_visual_temperature_step());
+  // bool supports_away = 11;
+  buffer.encode_bool(11, traits.get_supports_away());
+  return this->client_->send_buffer(APIMessageType::LIST_ENTITIES_CLIMATE_RESPONSE);
+}
+#endif
+
+APIMessageType ListEntitiesRequest::message_type() const { return APIMessageType::LIST_ENTITIES_REQUEST; }
+
+}  // namespace api
+}  // namespace esphome
--- a/esphome/components/api/list_entities.h
+++ b/esphome/components/api/list_entities.h
@@ -0,0 +1,57 @@
+#pragma once
+
+#include "esphome/core/component.h"
+#include "esphome/core/defines.h"
+#include "api_message.h"
+
+namespace esphome {
+namespace api {
+
+class ListEntitiesRequest : public APIMessage {
+ public:
+  APIMessageType message_type() const override;
+};
+
+class APIConnection;
+
+class ListEntitiesIterator : public ComponentIterator {
+ public:
+  ListEntitiesIterator(APIServer *server, APIConnection *client);
+#ifdef USE_BINARY_SENSOR
+  bool on_binary_sensor(binary_sensor::BinarySensor *binary_sensor) override;
+#endif
+#ifdef USE_COVER
+  bool on_cover(cover::Cover *cover) override;
+#endif
+#ifdef USE_FAN
+  bool on_fan(fan::FanState *fan) override;
+#endif
+#ifdef USE_LIGHT
+  bool on_light(light::LightState *light) override;
+#endif
+#ifdef USE_SENSOR
+  bool on_sensor(sensor::Sensor *sensor) override;
+#endif
+#ifdef USE_SWITCH
+  bool on_switch(switch_::Switch *a_switch) override;
+#endif
+#ifdef USE_TEXT_SENSOR
+  bool on_text_sensor(text_sensor::TextSensor *text_sensor) override;
+#endif
+  bool on_service(UserServiceDescriptor *service) override;
+#ifdef USE_ESP32_CAMERA
+  bool on_camera(esp32_camera::ESP32Camera *camera) override;
+#endif
+#ifdef USE_CLIMATE
+  bool on_climate(climate::Climate *climate) override;
+#endif
+  bool on_end() override;
+
+ protected:
+  APIConnection *client_;
+};
+
+}  // namespace api
+}  // namespace esphome
+
+#include "api_server.h"
--- a/esphome/components/api/service_call_message.cpp
+++ b/esphome/components/api/service_call_message.cpp
@@ -0,0 +1,49 @@
+#include "service_call_message.h"
+#include "esphome/core/log.h"
+
+namespace esphome {
+namespace api {
+
+APIMessageType SubscribeServiceCallsRequest::message_type() const {
+  return APIMessageType::SUBSCRIBE_SERVICE_CALLS_REQUEST;
+}
+
+APIMessageType ServiceCallResponse::message_type() const { return APIMessageType::SERVICE_CALL_RESPONSE; }
+void ServiceCallResponse::encode(APIBuffer &buffer) {
+  // string service = 1;
+  buffer.encode_string(1, this->service_);
+  // map<string, string> data = 2;
+  for (auto &it : this->data_) {
+    auto nested = buffer.begin_nested(2);
+    buffer.encode_string(1, it.key);
+    buffer.encode_string(2, it.value);
+    buffer.end_nested(nested);
+  }
+  // map<string, string> data_template = 3;
+  for (auto &it : this->data_template_) {
+    auto nested = buffer.begin_nested(3);
+    buffer.encode_string(1, it.key);
+    buffer.encode_string(2, it.value);
+    buffer.end_nested(nested);
+  }
+  // map<string, string> variables = 4;
+  for (auto &it : this->variables_) {
+    auto nested = buffer.begin_nested(4);
+    buffer.encode_string(1, it.key);
+    buffer.encode_string(2, it.value());
+    buffer.end_nested(nested);
+  }
+}
+void ServiceCallResponse::set_service(const std::string &service) { this->service_ = service; }
+void ServiceCallResponse::set_data(const std::vector<KeyValuePair> &data) { this->data_ = data; }
+void ServiceCallResponse::set_data_template(const std::vector<KeyValuePair> &data_template) {
+  this->data_template_ = data_template;
+}
+void ServiceCallResponse::set_variables(const std::vector<TemplatableKeyValuePair> &variables) {
+  this->variables_ = variables;
+}
+
+KeyValuePair::KeyValuePair(const std::string &key, const std::string &value) : key(key), value(value) {}
+
+}  // namespace api
+}  // namespace esphome
--- a/esphome/components/api/service_call_message.h
+++ b/esphome/components/api/service_call_message.h
@@ -0,0 +1,53 @@
+#pragma once
+
+#include "esphome/core/helpers.h"
+#include "esphome/core/automation.h"
+#include "api_message.h"
+
+namespace esphome {
+namespace api {
+
+class SubscribeServiceCallsRequest : public APIMessage {
+ public:
+  APIMessageType message_type() const override;
+};
+
+class KeyValuePair {
+ public:
+  KeyValuePair(const std::string &key, const std::string &value);
+
+  std::string key;
+  std::string value;
+};
+
+class TemplatableKeyValuePair {
+ public:
+  template<typename T> TemplatableKeyValuePair(std::string key, T func);
+
+  std::string key;
+  std::function<std::string()> value;
+};
+template<typename T> TemplatableKeyValuePair::TemplatableKeyValuePair(std::string key, T func) : key(key) {
+  this->value = [func]() -> std::string { return to_string(func()); };
+}
+
+class ServiceCallResponse : public APIMessage {
+ public:
+  APIMessageType message_type() const override;
+
+  void encode(APIBuffer &buffer) override;
+
+  void set_service(const std::string &service);
+  void set_data(const std::vector<KeyValuePair> &data);
+  void set_data_template(const std::vector<KeyValuePair> &data_template);
+  void set_variables(const std::vector<TemplatableKeyValuePair> &variables);
+
+ protected:
+  std::string service_;
+  std::vector<KeyValuePair> data_;
+  std::vector<KeyValuePair> data_template_;
+  std::vector<TemplatableKeyValuePair> variables_;
+};
+
+}  // namespace api
+}  // namespace esphome
--- a/esphome/components/api/subscribe_logs.cpp
+++ b/esphome/components/api/subscribe_logs.cpp
@@ -0,0 +1,26 @@
+#include "subscribe_logs.h"
+#include "esphome/core/log.h"
+
+namespace esphome {
+namespace api {
+
+APIMessageType SubscribeLogsRequest::message_type() const { return APIMessageType::SUBSCRIBE_LOGS_REQUEST; }
+bool SubscribeLogsRequest::decode_varint(uint32_t field_id, uint32_t value) {
+  switch (field_id) {
+    case 1:  // LogLevel level = 1;
+      this->level_ = value;
+      return true;
+    case 2:  // bool dump_config = 2;
+      this->dump_config_ = value;
+      return true;
+    default:
+      return false;
+  }
+}
+uint32_t SubscribeLogsRequest::get_level() const { return this->level_; }
+void SubscribeLogsRequest::set_level(uint32_t level) { this->level_ = level; }
+bool SubscribeLogsRequest::get_dump_config() const { return this->dump_config_; }
+void SubscribeLogsRequest::set_dump_config(bool dump_config) { this->dump_config_ = dump_config; }
+
+}  // namespace api
+}  // namespace esphome
--- a/esphome/components/api/subscribe_logs.h
+++ b/esphome/components/api/subscribe_logs.h
@@ -0,0 +1,24 @@
+#pragma once
+
+#include "esphome/core/component.h"
+#include "api_message.h"
+
+namespace esphome {
+namespace api {
+
+class SubscribeLogsRequest : public APIMessage {
+ public:
+  bool decode_varint(uint32_t field_id, uint32_t value) override;
+  APIMessageType message_type() const override;
+  uint32_t get_level() const;
+  void set_level(uint32_t level);
+  bool get_dump_config() const;
+  void set_dump_config(bool dump_config);
+
+ protected:
+  uint32_t level_{6};
+  bool dump_config_{false};
+};
+
+}  // namespace api
+}  // namespace esphome
--- a/esphome/components/api/subscribe_state.cpp
+++ b/esphome/components/api/subscribe_state.cpp
@@ -0,0 +1,77 @@
+#include "subscribe_state.h"
+#include "esphome/core/log.h"
+
+namespace esphome {
+namespace api {
+
+#ifdef USE_BINARY_SENSOR
+bool InitialStateIterator::on_binary_sensor(binary_sensor::BinarySensor *binary_sensor) {
+  if (!binary_sensor->has_state())
+    return true;
+
+  return this->client_->send_binary_sensor_state(binary_sensor, binary_sensor->state);
+}
+#endif
+#ifdef USE_COVER
+bool InitialStateIterator::on_cover(cover::Cover *cover) { return this->client_->send_cover_state(cover); }
+#endif
+#ifdef USE_FAN
+bool InitialStateIterator::on_fan(fan::FanState *fan) { return this->client_->send_fan_state(fan); }
+#endif
+#ifdef USE_LIGHT
+bool InitialStateIterator::on_light(light::LightState *light) { return this->client_->send_light_state(light); }
+#endif
+#ifdef USE_SENSOR
+bool InitialStateIterator::on_sensor(sensor::Sensor *sensor) {
+  if (!sensor->has_state())
+    return true;
+
+  return this->client_->send_sensor_state(sensor, sensor->state);
+}
+#endif
+#ifdef USE_SWITCH
+bool InitialStateIterator::on_switch(switch_::Switch *a_switch) {
+  return this->client_->send_switch_state(a_switch, a_switch->state);
+}
+#endif
+#ifdef USE_TEXT_SENSOR
+bool InitialStateIterator::on_text_sensor(text_sensor::TextSensor *text_sensor) {
+  if (!text_sensor->has_state())
+    return true;
+
+  return this->client_->send_text_sensor_state(text_sensor, text_sensor->state);
+}
+#endif
+#ifdef USE_CLIMATE
+bool InitialStateIterator::on_climate(climate::Climate *climate) { return this->client_->send_climate_state(climate); }
+#endif
+InitialStateIterator::InitialStateIterator(APIServer *server, APIConnection *client)
+    : ComponentIterator(server), client_(client) {}
+
+APIMessageType SubscribeStatesRequest::message_type() const { return APIMessageType::SUBSCRIBE_STATES_REQUEST; }
+
+bool HomeAssistantStateResponse::decode_length_delimited(uint32_t field_id, const uint8_t *value, size_t len) {
+  switch (field_id) {
+    case 1:
+      // string entity_id = 1;
+      this->entity_id_ = as_string(value, len);
+      return true;
+    case 2:
+      // string state = 2;
+      this->state_ = as_string(value, len);
+      return true;
+    default:
+      return false;
+  }
+}
+APIMessageType HomeAssistantStateResponse::message_type() const {
+  return APIMessageType::HOME_ASSISTANT_STATE_RESPONSE;
+}
+const std::string &HomeAssistantStateResponse::get_entity_id() const { return this->entity_id_; }
+const std::string &HomeAssistantStateResponse::get_state() const { return this->state_; }
+APIMessageType SubscribeHomeAssistantStatesRequest::message_type() const {
+  return APIMessageType::SUBSCRIBE_HOME_ASSISTANT_STATES_REQUEST;
+}
+
+}  // namespace api
+}  // namespace esphome
--- a/esphome/components/api/subscribe_state.h
+++ b/esphome/components/api/subscribe_state.h
@@ -0,0 +1,70 @@
+#pragma once
+
+#include "esphome/core/component.h"
+#include "esphome/core/controller.h"
+#include "esphome/core/defines.h"
+#include "util.h"
+#include "api_message.h"
+
+namespace esphome {
+namespace api {
+
+class SubscribeStatesRequest : public APIMessage {
+ public:
+  APIMessageType message_type() const override;
+};
+
+class APIConnection;
+
+class InitialStateIterator : public ComponentIterator {
+ public:
+  InitialStateIterator(APIServer *server, APIConnection *client);
+#ifdef USE_BINARY_SENSOR
+  bool on_binary_sensor(binary_sensor::BinarySensor *binary_sensor) override;
+#endif
+#ifdef USE_COVER
+  bool on_cover(cover::Cover *cover) override;
+#endif
+#ifdef USE_FAN
+  bool on_fan(fan::FanState *fan) override;
+#endif
+#ifdef USE_LIGHT
+  bool on_light(light::LightState *light) override;
+#endif
+#ifdef USE_SENSOR
+  bool on_sensor(sensor::Sensor *sensor) override;
+#endif
+#ifdef USE_SWITCH
+  bool on_switch(switch_::Switch *a_switch) override;
+#endif
+#ifdef USE_TEXT_SENSOR
+  bool on_text_sensor(text_sensor::TextSensor *text_sensor) override;
+#endif
+#ifdef USE_CLIMATE
+  bool on_climate(climate::Climate *climate) override;
+#endif
+ protected:
+  APIConnection *client_;
+};
+
+class SubscribeHomeAssistantStatesRequest : public APIMessage {
+ public:
+  APIMessageType message_type() const override;
+};
+
+class HomeAssistantStateResponse : public APIMessage {
+ public:
+  bool decode_length_delimited(uint32_t field_id, const uint8_t *value, size_t len) override;
+  APIMessageType message_type() const override;
+  const std::string &get_entity_id() const;
+  const std::string &get_state() const;
+
+ protected:
+  std::string entity_id_;
+  std::string state_;
+};
+
+}  // namespace api
+}  // namespace esphome
+
+#include "api_server.h"
--- a/esphome/components/api/user_services.cpp
+++ b/esphome/components/api/user_services.cpp
@@ -0,0 +1,74 @@
+#include "user_services.h"
+#include "esphome/core/log.h"
+
+namespace esphome {
+namespace api {
+
+template<> bool ExecuteServiceArgument::get_value<bool>() { return this->value_bool_; }
+template<> int ExecuteServiceArgument::get_value<int>() { return this->value_int_; }
+template<> float ExecuteServiceArgument::get_value<float>() { return this->value_float_; }
+template<> std::string ExecuteServiceArgument::get_value<std::string>() { return this->value_string_; }
+
+APIMessageType ExecuteServiceArgument::message_type() const { return APIMessageType::EXECUTE_SERVICE_REQUEST; }
+bool ExecuteServiceArgument::decode_varint(uint32_t field_id, uint32_t value) {
+  switch (field_id) {
+    case 1:  // bool bool_ = 1;
+      this->value_bool_ = value;
+      return true;
+    case 2:  // int32 int_ = 2;
+      this->value_int_ = value;
+      return true;
+    default:
+      return false;
+  }
+}
+bool ExecuteServiceArgument::decode_32bit(uint32_t field_id, uint32_t value) {
+  switch (field_id) {
+    case 3:  // float float_ = 3;
+      this->value_float_ = as_float(value);
+      return true;
+    default:
+      return false;
+  }
+}
+bool ExecuteServiceArgument::decode_length_delimited(uint32_t field_id, const uint8_t *value, size_t len) {
+  switch (field_id) {
+    case 4:  // string string_ = 4;
+      this->value_string_ = as_string(value, len);
+      return true;
+    default:
+      return false;
+  }
+}
+
+bool ExecuteServiceRequest::decode_32bit(uint32_t field_id, uint32_t value) {
+  switch (field_id) {
+    case 1:  // fixed32 key = 1;
+      this->key_ = value;
+      return true;
+    default:
+      return false;
+  }
+}
+bool ExecuteServiceRequest::decode_length_delimited(uint32_t field_id, const uint8_t *value, size_t len) {
+  switch (field_id) {
+    case 2: {  // repeated ExecuteServiceArgument args = 2;
+      ExecuteServiceArgument arg;
+      arg.decode(value, len);
+      this->args_.push_back(arg);
+      return true;
+    }
+    default:
+      return false;
+  }
+}
+APIMessageType ExecuteServiceRequest::message_type() const { return APIMessageType::EXECUTE_SERVICE_REQUEST; }
+const std::vector<ExecuteServiceArgument> &ExecuteServiceRequest::get_args() const { return this->args_; }
+uint32_t ExecuteServiceRequest::get_key() const { return this->key_; }
+
+ServiceTypeArgument::ServiceTypeArgument(const std::string &name, ServiceArgType type) : name_(name), type_(type) {}
+const std::string &ServiceTypeArgument::get_name() const { return this->name_; }
+ServiceArgType ServiceTypeArgument::get_type() const { return this->type_; }
+
+}  // namespace api
+}  // namespace esphome
--- a/esphome/components/api/user_services.h
+++ b/esphome/components/api/user_services.h
@@ -0,0 +1,125 @@
+#pragma once
+
+#include "esphome/core/component.h"
+#include "esphome/core/automation.h"
+#include "api_message.h"
+
+namespace esphome {
+namespace api {
+
+enum ServiceArgType {
+  SERVICE_ARG_TYPE_BOOL = 0,
+  SERVICE_ARG_TYPE_INT = 1,
+  SERVICE_ARG_TYPE_FLOAT = 2,
+  SERVICE_ARG_TYPE_STRING = 3,
+};
+
+class ServiceTypeArgument {
+ public:
+  ServiceTypeArgument(const std::string &name, ServiceArgType type);
+  const std::string &get_name() const;
+  ServiceArgType get_type() const;
+
+ protected:
+  std::string name_;
+  ServiceArgType type_;
+};
+
+class ExecuteServiceArgument : public APIMessage {
+ public:
+  APIMessageType message_type() const override;
+  template<typename T> T get_value();
+
+  bool decode_varint(uint32_t field_id, uint32_t value) override;
+  bool decode_length_delimited(uint32_t field_id, const uint8_t *value, size_t len) override;
+  bool decode_32bit(uint32_t field_id, uint32_t value) override;
+
+ protected:
+  bool value_bool_{false};
+  int value_int_{0};
+  float value_float_{0.0f};
+  std::string value_string_{};
+};
+
+class ExecuteServiceRequest : public APIMessage {
+ public:
+  bool decode_length_delimited(uint32_t field_id, const uint8_t *value, size_t len) override;
+  bool decode_32bit(uint32_t field_id, uint32_t value) override;
+  APIMessageType message_type() const override;
+
+  uint32_t get_key() const;
+  const std::vector<ExecuteServiceArgument> &get_args() const;
+
+ protected:
+  uint32_t key_;
+  std::vector<ExecuteServiceArgument> args_;
+};
+
+class UserServiceDescriptor {
+ public:
+  virtual void encode_list_service_response(APIBuffer &buffer) = 0;
+
+  virtual bool execute_service(const ExecuteServiceRequest &req) = 0;
+};
+
+template<typename... Ts> class UserService : public UserServiceDescriptor, public Trigger<Ts...> {
+ public:
+  UserService(const std::string &name, const std::array<ServiceTypeArgument, sizeof...(Ts)> &args);
+
+  void encode_list_service_response(APIBuffer &buffer) override;
+
+  bool execute_service(const ExecuteServiceRequest &req) override;
+
+ protected:
+  template<int... S> void execute_(std::vector<ExecuteServiceArgument> args, seq<S...>);
+
+  std::string name_;
+  uint32_t key_{0};
+  std::array<ServiceTypeArgument, sizeof...(Ts)> args_;
+};
+
+template<typename... Ts>
+template<int... S>
+void UserService<Ts...>::execute_(std::vector<ExecuteServiceArgument> args, seq<S...>) {
+  this->trigger((args[S].get_value<Ts>())...);
+}
+template<typename... Ts> void UserService<Ts...>::encode_list_service_response(APIBuffer &buffer) {
+  // string name = 1;
+  buffer.encode_string(1, this->name_);
+  // fixed32 key = 2;
+  buffer.encode_fixed32(2, this->key_);
+
+  // repeated ListServicesArgument args = 3;
+  for (auto &arg : this->args_) {
+    auto nested = buffer.begin_nested(3);
+    // string name = 1;
+    buffer.encode_string(1, arg.get_name());
+    // Type type = 2;
+    buffer.encode_int32(2, arg.get_type());
+    buffer.end_nested(nested);
+  }
+}
+template<typename... Ts> bool UserService<Ts...>::execute_service(const ExecuteServiceRequest &req) {
+  if (req.get_key() != this->key_)
+    return false;
+
+  if (req.get_args().size() != this->args_.size()) {
+    return false;
+  }
+
+  this->execute_(req.get_args(), typename gens<sizeof...(Ts)>::type());
+  return true;
+}
+template<typename... Ts>
+UserService<Ts...>::UserService(const std::string &name, const std::array<ServiceTypeArgument, sizeof...(Ts)> &args)
+    : name_(name), args_(args) {
+  this->key_ = fnv1_hash(this->name_);
+}
+
+template<> bool ExecuteServiceArgument::get_value<bool>();
+template<> int ExecuteServiceArgument::get_value<int>();
+template<> float ExecuteServiceArgument::get_value<float>();
+template<> std::string ExecuteServiceArgument::get_value<std::string>();
+
+}  // namespace api
+}  // namespace esphome
--- a/esphome/components/api/util.cpp
+++ b/esphome/components/api/util.cpp
@@ -0,0 +1,353 @@
+#include "util.h"
+#include "api_server.h"
+#include "user_services.h"
+#include "esphome/core/log.h"
+#include "esphome/core/application.h"
+
+namespace esphome {
+namespace api {
+
+APIBuffer::APIBuffer(std::vector<uint8_t> *buffer) : buffer_(buffer) {}
+size_t APIBuffer::get_length() const { return this->buffer_->size(); }
+void APIBuffer::write(uint8_t value) { this->buffer_->push_back(value); }
+void APIBuffer::encode_uint32(uint32_t field, uint32_t value, bool force) {
+  if (value == 0 && !force)
+    return;
+
+  this->encode_field_raw(field, 0);
+  this->encode_varint_raw(value);
+}
+void APIBuffer::encode_int32(uint32_t field, int32_t value, bool force) {
+  this->encode_uint32(field, static_cast<uint32_t>(value), force);
+}
+void APIBuffer::encode_bool(uint32_t field, bool value, bool force) {
+  if (!value && !force)
+    return;
+
+  this->encode_field_raw(field, 0);
+  this->write(0x01);
+}
+void APIBuffer::encode_string(uint32_t field, const std::string &value) {
+  this->encode_string(field, value.data(), value.size());
+}
+void APIBuffer::encode_bytes(uint32_t field, const uint8_t *data, size_t len) {
+  this->encode_string(field, reinterpret_cast<const char *>(data), len);
+}
+void APIBuffer::encode_string(uint32_t field, const char *string, size_t len) {
+  if (len == 0)
+    return;
+
+  this->encode_field_raw(field, 2);
+  this->encode_varint_raw(len);
+  const uint8_t *data = reinterpret_cast<const uint8_t *>(string);
+  for (size_t i = 0; i < len; i++) {
+    this->write(data[i]);
+  }
+}
+void APIBuffer::encode_fixed32(uint32_t field, uint32_t value, bool force) {
+  if (value == 0 && !force)
+    return;
+
+  this->encode_field_raw(field, 5);
+  this->write((value >> 0) & 0xFF);
+  this->write((value >> 8) & 0xFF);
+  this->write((value >> 16) & 0xFF);
+  this->write((value >> 24) & 0xFF);
+}
+void APIBuffer::encode_float(uint32_t field, float value, bool force) {
+  if (value == 0.0f && !force)
+    return;
+
+  union {
+    float value_f;
+    uint32_t value_raw;
+  } val;
+  val.value_f = value;
+  this->encode_fixed32(field, val.value_raw);
+}
+void APIBuffer::encode_field_raw(uint32_t field, uint32_t type) {
+  uint32_t val = (field << 3) | (type & 0b111);
+  this->encode_varint_raw(val);
+}
+void APIBuffer::encode_varint_raw(uint32_t value) {
+  if (value <= 0x7F) {
+    this->write(value);
+    return;
+  }
+
+  while (value) {
+    uint8_t temp = value & 0x7F;
+    value >>= 7;
+    if (value) {
+      this->write(temp | 0x80);
+    } else {
+      this->write(temp);
+    }
+  }
+}
+void APIBuffer::encode_sint32(uint32_t field, int32_t value, bool force) {
+  if (value < 0)
+    this->encode_uint32(field, ~(uint32_t(value) << 1), force);
+  else
+    this->encode_uint32(field, uint32_t(value) << 1, force);
+}
+void APIBuffer::encode_nameable(Nameable *nameable) {
+  // string object_id = 1;
+  this->encode_string(1, nameable->get_object_id());
+  // fixed32 key = 2;
+  this->encode_fixed32(2, nameable->get_object_id_hash());
+  // string name = 3;
+  this->encode_string(3, nameable->get_name());
+}
+size_t APIBuffer::begin_nested(uint32_t field) {
+  this->encode_field_raw(field, 2);
+  return this->buffer_->size();
+}
+void APIBuffer::end_nested(size_t begin_index) {
+  const uint32_t nested_length = this->buffer_->size() - begin_index;
+  // add varint
+  std::vector<uint8_t> var;
+  uint32_t val = nested_length;
+  if (val <= 0x7F) {
+    var.push_back(val);
+  } else {
+    while (val) {
+      uint8_t temp = val & 0x7F;
+      val >>= 7;
+      if (val) {
+        var.push_back(temp | 0x80);
+      } else {
+        var.push_back(temp);
+      }
+    }
+  }
+  this->buffer_->insert(this->buffer_->begin() + begin_index, var.begin(), var.end());
+}
+
+optional<uint32_t> proto_decode_varuint32(const uint8_t *buf, size_t len, uint32_t *consumed) {
+  if (len == 0)
+    return {};
+
+  uint32_t result = 0;
+  uint8_t bitpos = 0;
+
+  for (uint32_t i = 0; i < len; i++) {
+    uint8_t val = buf[i];
+    result |= uint32_t(val & 0x7F) << bitpos;
+    bitpos += 7;
+    if ((val & 0x80) == 0) {
+      if (consumed != nullptr) {
+        *consumed = i + 1;
+      }
+      return result;
+    }
+  }
+
+  return {};
+}
+
+std::string as_string(const uint8_t *value, size_t len) {
+  return std::string(reinterpret_cast<const char *>(value), len);
+}
+
+int32_t as_sint32(uint32_t val) {
+  if (val & 1)
+    return uint32_t(~(val >> 1));
+  else
+    return uint32_t(val >> 1);
+}
+
+float as_float(uint32_t val) {
+  static_assert(sizeof(uint32_t) == sizeof(float), "float must be 32bit long");
+  union {
+    uint32_t raw;
+    float value;
+  } x;
+  x.raw = val;
+  return x.value;
+}
+
+ComponentIterator::ComponentIterator(APIServer *server) : server_(server) {}
+void ComponentIterator::begin() {
+  this->state_ = IteratorState::BEGIN;
+  this->at_ = 0;
+}
+void ComponentIterator::advance() {
+  bool advance_platform = false;
+  bool success = true;
+  switch (this->state_) {
+    case IteratorState::NONE:
+      // not started
+      return;
+    case IteratorState::BEGIN:
+      if (this->on_begin()) {
+        advance_platform = true;
+      } else {
+        return;
+      }
+      break;
+#ifdef USE_BINARY_SENSOR
+    case IteratorState::BINARY_SENSOR:
+      if (this->at_ >= App.get_binary_sensors().size()) {
+        advance_platform = true;
+      } else {
+        auto *binary_sensor = App.get_binary_sensors()[this->at_];
+        if (binary_sensor->is_internal()) {
+          success = true;
+          break;
+        } else {
+          success = this->on_binary_sensor(binary_sensor);
+        }
+      }
+      break;
+#endif
+#ifdef USE_COVER
+    case IteratorState::COVER:
+      if (this->at_ >= App.get_covers().size()) {
+        advance_platform = true;
+      } else {
+        auto *cover = App.get_covers()[this->at_];
+        if (cover->is_internal()) {
+          success = true;
+          break;
+        } else {
+          success = this->on_cover(cover);
+        }
+      }
+      break;
+#endif
+#ifdef USE_FAN
+    case IteratorState::FAN:
+      if (this->at_ >= App.get_fans().size()) {
+        advance_platform = true;
+      } else {
+        auto *fan = App.get_fans()[this->at_];
+        if (fan->is_internal()) {
+          success = true;
+          break;
+        } else {
+          success = this->on_fan(fan);
+        }
+      }
+      break;
+#endif
+#ifdef USE_LIGHT
+    case IteratorState::LIGHT:
+      if (this->at_ >= App.get_lights().size()) {
+        advance_platform = true;
+      } else {
+        auto *light = App.get_lights()[this->at_];
+        if (light->is_internal()) {
+          success = true;
+          break;
+        } else {
+          success = this->on_light(light);
+        }
+      }
+      break;
+#endif
+#ifdef USE_SENSOR
+    case IteratorState::SENSOR:
+      if (this->at_ >= App.get_sensors().size()) {
+        advance_platform = true;
+      } else {
+        auto *sensor = App.get_sensors()[this->at_];
+        if (sensor->is_internal()) {
+          success = true;
+          break;
+        } else {
+          success = this->on_sensor(sensor);
+        }
+      }
+      break;
+#endif
+#ifdef USE_SWITCH
+    case IteratorState::SWITCH:
+      if (this->at_ >= App.get_switches().size()) {
+        advance_platform = true;
+      } else {
+        auto *a_switch = App.get_switches()[this->at_];
+        if (a_switch->is_internal()) {
+          success = true;
+          break;
+        } else {
+          success = this->on_switch(a_switch);
+        }
+      }
+      break;
+#endif
+#ifdef USE_TEXT_SENSOR
+    case IteratorState::TEXT_SENSOR:
+      if (this->at_ >= App.get_text_sensors().size()) {
+        advance_platform = true;
+      } else {
+        auto *text_sensor = App.get_text_sensors()[this->at_];
+        if (text_sensor->is_internal()) {
+          success = true;
+          break;
+        } else {
+          success = this->on_text_sensor(text_sensor);
+        }
+      }
+      break;
+#endif
+    case IteratorState ::SERVICE:
+      if (this->at_ >= this->server_->get_user_services().size()) {
+        advance_platform = true;
+      } else {
+        auto *service = this->server_->get_user_services()[this->at_];
+        success = this->on_service(service);
+      }
+      break;
+#ifdef USE_ESP32_CAMERA
+    case IteratorState::CAMERA:
+      if (esp32_camera::global_esp32_camera == nullptr) {
+        advance_platform = true;
+      } else {
+        if (esp32_camera::global_esp32_camera->is_internal()) {
+          advance_platform = success = true;
+          break;
+        } else {
+          advance_platform = success = this->on_camera(esp32_camera::global_esp32_camera);
+        }
+      }
+      break;
+#endif
+#ifdef USE_CLIMATE
+    case IteratorState::CLIMATE:
+      if (this->at_ >= App.get_climates().size()) {
+        advance_platform = true;
+      } else {
+        auto *climate = App.get_climates()[this->at_];
+        if (climate->is_internal()) {
+          success = true;
+          break;
+        } else {
+          success = this->on_climate(climate);
+        }
+      }
+      break;
+#endif
+    case IteratorState::MAX:
+      if (this->on_end()) {
+        this->state_ = IteratorState::NONE;
+      }
+      return;
+  }
+
+  if (advance_platform) {
+    this->state_ = static_cast<IteratorState>(static_cast<uint32_t>(this->state_) + 1);
+    this->at_ = 0;
+  } else if (success) {
+    this->at_++;
+  }
+}
+bool ComponentIterator::on_end() { return true; }
+bool ComponentIterator::on_begin() { return true; }
+bool ComponentIterator::on_service(UserServiceDescriptor *service) { return true; }
+#ifdef USE_ESP32_CAMERA
+bool ComponentIterator::on_camera(esp32_camera::ESP32Camera *camera) { return true; }
+#endif
+
+}  // namespace api
+}  // namespace esphome
--- a/esphome/components/api/util.h
+++ b/esphome/components/api/util.h
@@ -0,0 +1,127 @@
+#pragma once
+
+#include "esphome/core/helpers.h"
+#include "esphome/core/component.h"
+#include "esphome/core/controller.h"
+#ifdef USE_ESP32_CAMERA
+#include "esphome/components/esp32_camera/esp32_camera.h"
+#endif
+
+namespace esphome {
+namespace api {
+
+class APIBuffer {
+ public:
+  APIBuffer(std::vector<uint8_t> *buffer);
+
+  size_t get_length() const;
+  void write(uint8_t value);
+
+  void encode_int32(uint32_t field, int32_t value, bool force = false);
+  void encode_uint32(uint32_t field, uint32_t value, bool force = false);
+  void encode_sint32(uint32_t field, int32_t value, bool force = false);
+  void encode_bool(uint32_t field, bool value, bool force = false);
+  void encode_string(uint32_t field, const std::string &value);
+  void encode_string(uint32_t field, const char *string, size_t len);
+  void encode_bytes(uint32_t field, const uint8_t *data, size_t len);
+  void encode_fixed32(uint32_t field, uint32_t value, bool force = false);
+  void encode_float(uint32_t field, float value, bool force = false);
+  void encode_nameable(Nameable *nameable);
+
+  size_t begin_nested(uint32_t field);
+  void end_nested(size_t begin_index);
+
+  void encode_field_raw(uint32_t field, uint32_t type);
+  void encode_varint_raw(uint32_t value);
+
+ protected:
+  std::vector<uint8_t> *buffer_;
+};
+
+optional<uint32_t> proto_decode_varuint32(const uint8_t *buf, size_t len, uint32_t *consumed = nullptr);
+
+std::string as_string(const uint8_t *value, size_t len);
+int32_t as_sint32(uint32_t val);
+float as_float(uint32_t val);
+
+class APIServer;
+class UserServiceDescriptor;
+
+class ComponentIterator {
+ public:
+  ComponentIterator(APIServer *server);
+
+  void begin();
+  void advance();
+  virtual bool on_begin();
+#ifdef USE_BINARY_SENSOR
+  virtual bool on_binary_sensor(binary_sensor::BinarySensor *binary_sensor) = 0;
+#endif
+#ifdef USE_COVER
+  virtual bool on_cover(cover::Cover *cover) = 0;
+#endif
+#ifdef USE_FAN
+  virtual bool on_fan(fan::FanState *fan) = 0;
+#endif
+#ifdef USE_LIGHT
+  virtual bool on_light(light::LightState *light) = 0;
+#endif
+#ifdef USE_SENSOR
+  virtual bool on_sensor(sensor::Sensor *sensor) = 0;
+#endif
+#ifdef USE_SWITCH
+  virtual bool on_switch(switch_::Switch *a_switch) = 0;
+#endif
+#ifdef USE_TEXT_SENSOR
+  virtual bool on_text_sensor(text_sensor::TextSensor *text_sensor) = 0;
+#endif
+  virtual bool on_service(UserServiceDescriptor *service);
+#ifdef USE_ESP32_CAMERA
+  virtual bool on_camera(esp32_camera::ESP32Camera *camera);
+#endif
+#ifdef USE_CLIMATE
+  virtual bool on_climate(climate::Climate *climate) = 0;
+#endif
+  virtual bool on_end();
+
+ protected:
+  enum class IteratorState {
+    NONE = 0,
+    BEGIN,
+#ifdef USE_BINARY_SENSOR
+    BINARY_SENSOR,
+#endif
+#ifdef USE_COVER
+    COVER,
+#endif
+#ifdef USE_FAN
+    FAN,
+#endif
+#ifdef USE_LIGHT
+    LIGHT,
+#endif
+#ifdef USE_SENSOR
+    SENSOR,
+#endif
+#ifdef USE_SWITCH
+    SWITCH,
+#endif
+#ifdef USE_TEXT_SENSOR
+    TEXT_SENSOR,
+#endif
+    SERVICE,
+#ifdef USE_ESP32_CAMERA
+    CAMERA,
+#endif
+#ifdef USE_CLIMATE
+    CLIMATE,
+#endif
+    MAX,
+  } state_{IteratorState::NONE};
+  size_t at_{0};
+
+  APIServer *server_;
+};
+
+}  // namespace api
+}  // namespace esphome
--- a/Show More
+++ b/Show More