diff --git a/boards/risc-v/esp32c3/esp32c3-devkit/src/Makefile b/boards/risc-v/esp32c3/esp32c3-devkit/src/Makefile index 10004d1ffe..6ae26b3e4a 100644 --- a/boards/risc-v/esp32c3/esp32c3-devkit/src/Makefile +++ b/boards/risc-v/esp32c3/esp32c3-devkit/src/Makefile @@ -38,6 +38,10 @@ ifeq ($(CONFIG_DEV_GPIO),y) CSRCS += esp32c3_gpio.c endif +ifeq ($(CONFIG_I2C_DRIVER),y) +CSRCS += esp32c3_i2c.c +endif + ifeq ($(CONFIG_WATCHDOG),y) CSRCS += esp32c3_wdt.c endif diff --git a/boards/risc-v/esp32c3/esp32c3-devkit/src/esp32c3-devkit.h b/boards/risc-v/esp32c3/esp32c3-devkit/src/esp32c3-devkit.h index 94011b86ae..090b66dd90 100644 --- a/boards/risc-v/esp32c3/esp32c3-devkit/src/esp32c3-devkit.h +++ b/boards/risc-v/esp32c3/esp32c3-devkit/src/esp32c3-devkit.h @@ -85,6 +85,21 @@ int esp32c3_gpio_init(void); int board_wdt_init(void); #endif +/**************************************************************************** + * Name: board_i2c_init + * + * Description: + * Configure the I2C driver. + * + * Returned Value: + * Zero (OK) is returned on success; A negated errno value is returned + * to indicate the nature of any failure. + * + ****************************************************************************/ +#ifdef CONFIG_I2C_DRIVER +int board_i2c_init(void); +#endif + /**************************************************************************** * Name: board_tim_init * diff --git a/boards/risc-v/esp32c3/esp32c3-devkit/src/esp32c3_bringup.c b/boards/risc-v/esp32c3/esp32c3-devkit/src/esp32c3_bringup.c index 22115b0915..cb84d58ee2 100644 --- a/boards/risc-v/esp32c3/esp32c3-devkit/src/esp32c3_bringup.c +++ b/boards/risc-v/esp32c3/esp32c3-devkit/src/esp32c3_bringup.c @@ -95,6 +95,17 @@ int esp32c3_bringup(void) } #endif +#if defined(CONFIG_I2C_DRIVER) + /* Configure I2C peripheral interfaces */ + + ret = board_i2c_init(); + + if (ret < 0) + { + syslog(LOG_ERR, "Failed to initialize I2C driver: %d\n", ret); + } +#endif + #ifdef CONFIG_WATCHDOG /* Configure watchdog timer */ diff --git a/boards/risc-v/esp32c3/esp32c3-devkit/src/esp32c3_i2c.c b/boards/risc-v/esp32c3/esp32c3-devkit/src/esp32c3_i2c.c new file mode 100644 index 0000000000..b7db9698e4 --- /dev/null +++ b/boards/risc-v/esp32c3/esp32c3-devkit/src/esp32c3_i2c.c @@ -0,0 +1,76 @@ +/**************************************************************************** + * boards/risc-v/esp32c3/esp32c3-devkit/src/esp32c3_i2c.c + * + * Licensed to the Apache Software Foundation (ASF) under one or more + * contributor license agreements. See the NOTICE file distributed with + * this work for additional information regarding copyright ownership. The + * ASF licenses this file to you under the Apache License, Version 2.0 (the + * "License"); you may not use this file except in compliance with the + * License. You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT + * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the + * License for the specific language governing permissions and limitations + * under the License. + * + ****************************************************************************/ + +/**************************************************************************** + * Included Files + ****************************************************************************/ + +#include + +#include +#include +#include +#include + +#include "esp32c3_i2c.h" +#include "esp32c3-devkit.h" + +/**************************************************************************** + * Public Functions + ****************************************************************************/ + +/**************************************************************************** + * Name: board_i2c_init + * + * Description: + * Configure the I2C driver. + * + * Returned Value: + * Zero (OK) is returned on success; A negated errno value is returned + * to indicate the nature of any failure. + * + ****************************************************************************/ + +int board_i2c_init(void) +{ + int ret = OK; + +#ifdef CONFIG_ESP32C3_I2C0 + FAR struct i2c_master_s *i2c; + + i2c = esp32c3_i2cbus_initialize(0); + + if (i2c == NULL) + { + i2cerr("ERROR: Failed to get I2C0 interface\n"); + return -ENODEV; + } + + ret = i2c_register(i2c, 0); + if (ret < 0) + { + i2cerr("ERROR: Failed to register I2C0 driver: %d\n", ret); + esp32c3_i2cbus_uninitialize(i2c); + } +#endif + + return ret; +} +