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boards/esp32c3-devkit: Add support for I2C on board bringup

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This commit is contained in:
Gustavo Henrique Nihei 2021-02-23 19:17:41 -03:00 committed by Alan Carvalho de Assis
parent 11b1f0f9dd
commit abab83b216
4 changed files with 106 additions and 0 deletions
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4
boards/risc-v/esp32c3/esp32c3-devkit/src/Makefile
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@ -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

15
boards/risc-v/esp32c3/esp32c3-devkit/src/esp32c3-devkit.h
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@ -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
*

11
boards/risc-v/esp32c3/esp32c3-devkit/src/esp32c3_bringup.c
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@ -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 */

76
boards/risc-v/esp32c3/esp32c3-devkit/src/esp32c3_i2c.c Normal file
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@ -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 <nuttx/config.h>
#include <debug.h>
#include <errno.h>
#include <sys/types.h>
#include <nuttx/i2c/i2c_master.h>
#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;
}