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boards/esp32/heltec_wifi_lora32: Add support to SX1276
This commit adds support to SX1276 transceiver on Heltec WiFi LoRa32 board. Signed-off-by: Alan C. Assis <acassis@gmail.com>
This commit is contained in:
Alan Carvalho de Assis
committed by
Xiang Xiao
Xiang Xiao
parent
e5a0c3e7d7
commit
e20d4912ff
@@ -0,0 +1,68 @@
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#
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# This file is autogenerated: PLEASE DO NOT EDIT IT.
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#
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# You can use "make menuconfig" to make any modifications to the installed .config file.
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# You can then do "make savedefconfig" to generate a new defconfig file that includes your
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# modifications.
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#
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# CONFIG_ARCH_LEDS is not set
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# CONFIG_LPWAN_SX127X_LORA is not set
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# CONFIG_NSH_ARGCAT is not set
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# CONFIG_NSH_CMDOPT_HEXDUMP is not set
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CONFIG_ARCH="xtensa"
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CONFIG_ARCH_BOARD="heltec_wifi_lora32"
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CONFIG_ARCH_BOARD_COMMON=y
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CONFIG_ARCH_BOARD_HELTEC_WIFI_LORA32=y
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CONFIG_ARCH_CHIP="esp32"
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CONFIG_ARCH_CHIP_ESP32=y
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CONFIG_ARCH_CHIP_ESP32WROVER=y
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CONFIG_ARCH_STACKDUMP=y
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CONFIG_ARCH_XTENSA=y
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CONFIG_BOARD_LOOPSPERMSEC=16717
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CONFIG_BUILTIN=y
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CONFIG_DEBUG_FEATURES=y
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CONFIG_DEBUG_LIB=y
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CONFIG_DRIVERS_LPWAN=y
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CONFIG_DRIVERS_WIRELESS=y
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CONFIG_ESP32_IGNORE_CHIP_REVISION_CHECK=y
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CONFIG_ESP32_SPI2=y
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CONFIG_ESP32_SPI2_CLKPIN=5
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CONFIG_ESP32_SPI2_CSPIN=18
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CONFIG_ESP32_SPI2_MISOPIN=19
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CONFIG_ESP32_SPI2_MOSIPIN=27
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CONFIG_ESP32_UART0=y
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CONFIG_EXAMPLES_SX127X=y
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CONFIG_EXAMPLES_SX127X_RFFREQ=915000000
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CONFIG_EXAMPLES_SX127X_TXDATA=63
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CONFIG_EXAMPLES_SX127X_TXPOWER=20
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CONFIG_FS_PROCFS=y
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CONFIG_HAVE_CXX=y
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CONFIG_HAVE_CXXINITIALIZE=y
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CONFIG_IDLETHREAD_STACKSIZE=3072
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CONFIG_INIT_ENTRYPOINT="nsh_main"
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CONFIG_INIT_STACKSIZE=3072
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CONFIG_INTELHEX_BINARY=y
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CONFIG_LINE_MAX=64
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CONFIG_LPWAN_SX127X=y
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CONFIG_LPWAN_SX127X_FSKOOK=y
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CONFIG_LPWAN_SX127X_RFFREQ_DEFAULT=915000000
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CONFIG_LPWAN_SX127X_RXSUPPORT=y
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CONFIG_LPWAN_SX127X_TXPOWER_DEFAULT=20
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CONFIG_LPWAN_SX127X_TXSUPPORT=y
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CONFIG_MM_REGIONS=3
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CONFIG_NSH_ARCHINIT=y
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CONFIG_NSH_BUILTIN_APPS=y
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CONFIG_NSH_FILEIOSIZE=512
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CONFIG_NSH_READLINE=y
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CONFIG_PREALLOC_TIMERS=4
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CONFIG_RAM_SIZE=114688
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CONFIG_RAM_START=0x20000000
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CONFIG_RR_INTERVAL=200
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CONFIG_SCHED_HPWORK=y
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CONFIG_SCHED_WAITPID=y
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CONFIG_START_DAY=6
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CONFIG_START_MONTH=12
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CONFIG_START_YEAR=2011
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CONFIG_SYSLOG_BUFFER=y
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CONFIG_SYSTEM_NSH=y
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CONFIG_UART0_SERIAL_CONSOLE=y
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@@ -26,6 +26,10 @@ ifeq ($(CONFIG_BOARDCTL),y)
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CSRCS += esp32_appinit.c
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endif
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ifeq ($(CONFIG_LPWAN_SX127X),y)
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CSRCS += esp32_sx127x.c
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endif
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DEPPATH += --dep-path board
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VPATH += :board
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CFLAGS += ${INCDIR_PREFIX}$(TOPDIR)$(DELIM)arch$(DELIM)$(CONFIG_ARCH)$(DELIM)src$(DELIM)board$(DELIM)board
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@@ -81,6 +81,16 @@ int esp32_bringup(void)
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}
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#endif
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#ifdef CONFIG_LPWAN_SX127X
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ret = esp32_lpwaninitialize();
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if (ret < 0)
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{
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syslog(LOG_ERR,
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"ERROR: Failed to initialize wireless driver: %d\n",
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ret);
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}
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#endif /* CONFIG_LPWAN_SX127X */
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/* If we got here then perhaps not all initialization was successful, but
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* at least enough succeeded to bring-up NSH with perhaps reduced
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* capabilities.
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@@ -0,0 +1,229 @@
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/****************************************************************************
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* boards/xtensa/esp32/heltec_wifi_lora32/src/esp32_sx127x.c
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*
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* SPDX-License-Identifier: Apache-2.0
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*
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* Licensed to the Apache Software Foundation (ASF) under one or more
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* contributor license agreements. See the NOTICE file distributed with
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* this work for additional information regarding copyright ownership. The
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* ASF licenses this file to you under the Apache License, Version 2.0 (the
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* "License"); you may not use this file except in compliance with the
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* License. You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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* License for the specific language governing permissions and limitations
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* under the License.
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*
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****************************************************************************/
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/****************************************************************************
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* Included Files
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****************************************************************************/
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#include <nuttx/config.h>
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#include <stdio.h>
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#include <stdint.h>
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#include <errno.h>
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#include <assert.h>
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#include <debug.h>
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#include <nuttx/board.h>
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#include <nuttx/signal.h>
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#include <nuttx/wireless/lpwan/sx127x.h>
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#include <arch/board/board.h>
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#include "esp32_gpio.h"
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#include "esp32_spi.h"
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#include "hardware/esp32_gpio_sigmap.h"
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#include "heltec_wifi_lora32.h"
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/****************************************************************************
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* Pre-processor Definitions
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****************************************************************************/
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/* SX127X on SPI2 bus */
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#define SX127X_SPI 2
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/****************************************************************************
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* Private Function Prototypes
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****************************************************************************/
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static void sx127x_chip_reset(void);
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static int sx127x_opmode_change(int opmode);
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static int sx127x_freq_select(uint32_t freq);
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static int sx127x_pa_select(bool enable);
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static int sx127x_irq0_attach(xcpt_t isr, void *arg);
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/****************************************************************************
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* Private Data
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****************************************************************************/
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struct sx127x_lower_s lower =
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{
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.irq0attach = sx127x_irq0_attach,
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.reset = sx127x_chip_reset,
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.opmode_change = sx127x_opmode_change,
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.freq_select = sx127x_freq_select,
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.pa_select = sx127x_pa_select,
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.pa_force = true
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};
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/****************************************************************************
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* Private Functions
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****************************************************************************/
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/****************************************************************************
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* Name: sx127x_irq0_attach
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****************************************************************************/
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static int sx127x_irq0_attach(xcpt_t isr, void *arg)
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{
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int irq = ESP32_PIN2IRQ(GPIO_SX127X_DIO0);
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int ret;
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/* Make sure the interrupt is disabled */
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esp32_gpioirqdisable(irq);
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wlinfo("Attach DIO0 IRQ\n");
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/* Attach to IRQ on pin connected to DIO0 */
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ret = irq_attach(irq, isr, arg);
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if (ret < 0)
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{
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syslog(LOG_ERR, "ERROR: gpint_attach() failed: %d\n", ret);
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return ret;
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}
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/* IRQ on rising edge */
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esp32_gpioirqenable(irq, RISING);
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return OK;
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}
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/****************************************************************************
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* Name: sx127x_chip_reset
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****************************************************************************/
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static void sx127x_chip_reset(void)
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{
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wlinfo("SX127X RESET\n");
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/* Configure reset as output */
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esp32_gpio_matrix_out(GPIO_SX127X_RESET, SIG_GPIO_OUT_IDX, 0, 0);
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esp32_configgpio(GPIO_SX127X_RESET, OUTPUT_FUNCTION_3 | INPUT_FUNCTION_3);
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/* Set pin to zero */
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esp32_gpiowrite(GPIO_SX127X_RESET, 0);
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/* Wait 1 ms */
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nxsched_usleep(1000);
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/* Set pin to high */
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esp32_gpiowrite(GPIO_SX127X_RESET, 1);
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/* Wait 10 ms */
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nxsched_usleep(10000);
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}
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/****************************************************************************
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* Name: sx127x_opmode_change
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****************************************************************************/
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static int sx127x_opmode_change(int opmode)
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{
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/* Do nothing */
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return OK;
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}
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/****************************************************************************
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* Name: sx127x_freq_select
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****************************************************************************/
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static int sx127x_freq_select(uint32_t freq)
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{
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int ret = OK;
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/* NOTE: this depends on your module version */
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if (freq > SX127X_HFBAND_THR)
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{
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ret = -EINVAL;
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wlerr("HF band not supported\n");
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}
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return ret;
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}
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/****************************************************************************
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* Name: sx127x_pa_select
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****************************************************************************/
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static int sx127x_pa_select(bool enable)
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{
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int ret = OK;
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/* Only PA_BOOST output connected to antenna */
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if (enable == false)
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{
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ret = -EINVAL;
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wlerr("Module supports only PA_BOOST pin,"
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" so PA_SELECT must be enabled!\n");
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}
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return ret;
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}
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/****************************************************************************
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* Public Functions
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****************************************************************************/
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int esp32_lpwaninitialize(void)
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{
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struct spi_dev_s *spidev;
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int ret = OK;
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wlinfo("Register the sx127x module\n");
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/* Setup DIO0 */
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esp32_configgpio(GPIO_SX127X_DIO0, INPUT_FUNCTION_3 | PULLDOWN);
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/* Init SPI bus */
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spidev = esp32_spibus_initialize(SX127X_SPI);
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if (!spidev)
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{
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wlerr("ERROR: Failed to initialize SPI %d bus\n", SX127X_SPI);
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ret = -ENODEV;
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goto errout;
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}
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/* Initialize SX127X */
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ret = sx127x_register(spidev, &lower);
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if (ret < 0)
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{
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wlerr("ERROR: Failed to register sx127x\n");
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goto errout;
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}
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errout:
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return ret;
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}
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@@ -37,6 +37,11 @@
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/* Heltec WiFi LoRa32 GPIOs *************************************************/
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/* SX1276 pins */
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#define GPIO_SX127X_RESET 14 /* RESET connected to IO14 */
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#define GPIO_SX127X_DIO0 26 /* DIO0 connected to IO26 */
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/* BOOT Button */
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#define BUTTON_BOOT 0
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@@ -111,5 +116,24 @@
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int esp32_bringup(void);
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/****************************************************************************
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* Name: esp32_lpwaninitialize
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*
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* Description:
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* Initialize the SX127x driver
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*
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* Input Parameters:
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* None
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*
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* Returned Value:
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* Zero (OK) is returned on success; A negated errno value is returned
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* to indicate the nature of any failure.
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*
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****************************************************************************/
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#ifdef CONFIG_LPWAN_SX127X
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int esp32_lpwaninitialize(void);
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#endif
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#endif /* __ASSEMBLY__ */
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#endif /* __BOARDS_XTENSA_ESP32_HELTEC_WIFI_LORA32_SRC_HELTEC_WIFI_LORA32_H */
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