#include <string.h>#include <freertos/FreeRTOS.h>#include <freertos/task.h>#include <esp_log.h>#include "i2cdev.h"
Include dependency graph for i2cdev.c:
Macros | |
| #define | SEMAPHORE_TAKE(port) |
| #define | SEMAPHORE_GIVE(port) |
Functions | |
| esp_err_t | i2cdev_init () |
| Init library. More... | |
| esp_err_t | i2cdev_done () |
| Finish work with library. More... | |
| esp_err_t | i2c_dev_create_mutex (i2c_dev_t *dev) |
| Create mutex for device descriptor. More... | |
| esp_err_t | i2c_dev_delete_mutex (i2c_dev_t *dev) |
| Delete mutex for device descriptor. More... | |
| esp_err_t | i2c_dev_take_mutex (i2c_dev_t *dev) |
| Take device mutex. More... | |
| esp_err_t | i2c_dev_give_mutex (i2c_dev_t *dev) |
| Give device mutex. More... | |
| esp_err_t | i2c_dev_read (const i2c_dev_t *dev, const void *out_data, size_t out_size, void *in_data, size_t in_size) |
| Read from slave device. More... | |
| esp_err_t | i2c_dev_write (const i2c_dev_t *dev, const void *out_reg, size_t out_reg_size, const void *out_data, size_t out_size) |
| Write to slave device. More... | |
| esp_err_t | i2c_dev_read_reg (const i2c_dev_t *dev, uint8_t reg, void *in_data, size_t in_size) |
| Read from register with an 8-bit address. More... | |
| esp_err_t | i2c_dev_write_reg (const i2c_dev_t *dev, uint8_t reg, const void *out_data, size_t out_size) |
| Write to register with an 8-bit address. More... | |
Detailed Description
ESP-IDF I2C master thread-safe functions for communication with I2C slave
Copyright (c) 2018 Ruslan V. Uss unclerus@gmail.com
MIT Licensed as described in the file LICENSE
Macro Definition Documentation
◆ SEMAPHORE_GIVE
| #define SEMAPHORE_GIVE | ( | port | ) |
◆ SEMAPHORE_TAKE
| #define SEMAPHORE_TAKE | ( | port | ) |
Value:
do { \
if (!xSemaphoreTake(states[port].lock, pdMS_TO_TICKS(CONFIG_I2CDEV_TIMEOUT))) \
{ \
ESP_LOGE(TAG, "Could not take port mutex %d", port); \
return ESP_ERR_TIMEOUT; \
} \
} while (0)
