[debug] Add iram sensor for ESP32

esphome/components/debug/debug_component.h

@@ -45,6 +45,7 @@ class DebugComponent : public PollingComponent {
   void set_loop_time_sensor(sensor::Sensor *loop_time_sensor) { loop_time_sensor_ = loop_time_sensor; }
 #ifdef USE_ESP32
   void set_psram_sensor(sensor::Sensor *psram_sensor) { this->psram_sensor_ = psram_sensor; }
+  void set_iram_sensor(sensor::Sensor *iram_sensor) { this->iram_sensor_ = iram_sensor; }
 #endif  // USE_ESP32
   void set_cpu_frequency_sensor(sensor::Sensor *cpu_frequency_sensor) {
     this->cpu_frequency_sensor_ = cpu_frequency_sensor;
@@ -71,6 +72,7 @@ class DebugComponent : public PollingComponent {
   sensor::Sensor *loop_time_sensor_{nullptr};
 #ifdef USE_ESP32
   sensor::Sensor *psram_sensor_{nullptr};
+  sensor::Sensor *iram_sensor_{nullptr};
 #endif  // USE_ESP32
   sensor::Sensor *cpu_frequency_sensor_{nullptr};
 #endif  // USE_SENSOR

esphome/components/debug/debug_esp32.cpp

@@ -301,6 +301,9 @@ void DebugComponent::update_platform_() {
   if (this->psram_sensor_ != nullptr) {
     this->psram_sensor_->publish_state(heap_caps_get_free_size(MALLOC_CAP_SPIRAM));
   }
+  if (this->iram_sensor_ != nullptr) {
+    this->iram_sensor_->publish_state(heap_caps_get_free_size(MALLOC_CAP_IRAM_8BIT));
+  }
 #endif
 }
 

esphome/components/debug/sensor.py

@@ -32,6 +32,7 @@ DEPENDENCIES = ["debug"]
 
 CONF_MIN_FREE = "min_free"
 CONF_PSRAM = "psram"
+CONF_IRAM = "iram"
 
 CONFIG_SCHEMA = {
     cv.GenerateID(CONF_DEBUG_ID): cv.use_id(DebugComponent),
@@ -98,6 +99,16 @@ CONFIG_SCHEMA = {
             state_class=STATE_CLASS_MEASUREMENT,
         ),
     ),
+    cv.Optional(CONF_IRAM): cv.All(
+        cv.only_on_esp32,
+        sensor.sensor_schema(
+            unit_of_measurement=UNIT_BYTES,
+            icon=ICON_COUNTER,
+            accuracy_decimals=0,
+            entity_category=ENTITY_CATEGORY_DIAGNOSTIC,
+            state_class=STATE_CLASS_MEASUREMENT,
+        ),
+    ),
     cv.Optional(CONF_CPU_FREQUENCY): cv.All(
         sensor.sensor_schema(
             unit_of_measurement=UNIT_HERTZ,
@@ -138,6 +149,10 @@ async def to_code(config):
         sens = await sensor.new_sensor(psram_conf)
         cg.add(debug_component.set_psram_sensor(sens))
 
+    if iram_conf := config.get(CONF_IRAM):
+        sens = await sensor.new_sensor(iram_conf)
+        cg.add(debug_component.set_iram_sensor(sens))
+
     if cpu_freq_conf := config.get(CONF_CPU_FREQUENCY):
         sens = await sensor.new_sensor(cpu_freq_conf)
         cg.add(debug_component.set_cpu_frequency_sensor(sens))

tests/components/debug/test.esp32-ard.yaml

@@ -9,3 +9,5 @@ sensor:
       name: "Heap Fragmentation"
     min_free:
       name: "Heap Min Free"
+    iram:
+      name: "Free IRAM"

tests/components/debug/test.esp32-idf.yaml

@@ -13,5 +13,7 @@ sensor:
       name: "Heap Fragmentation"
     min_free:
       name: "Heap Min Free"
+    iram:
+      name: "Free IRAM"
 
 psram:

tests/components/debug/test.esp32-s2-idf.yaml

@@ -6,3 +6,5 @@ sensor:
       name: "Heap Fragmentation"
     min_free:
       name: "Heap Min Free"
+    iram:
+      name: "Free IRAM"