flipperzero-firmware/firmware/targets/api-hal-include/api-hal-i2c.h

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#pragma once
#include <stdbool.h>
#include <stdint.h>
#include <api-hal-resources.h>
#ifdef __cplusplus
extern "C" {
#endif
/** Init I2C */
void api_hal_i2c_init();
/**
* Perform I2C tx transfer
* @param instance I2C_TypeDef instance
* @param address I2C slave address
* @param data pointer to data buffer
* @param size size of data buffer
* @param timeout timeout in CPU ticks
* @return true on successful transfer, false otherwise
*/
bool api_hal_i2c_tx(
I2C_TypeDef* instance,
const uint8_t address,
const uint8_t* data,
const uint8_t size,
uint32_t timeout);
/**
* Perform I2C rx transfer
* @param instance I2C_TypeDef instance
* @param address I2C slave address
* @param data pointer to data buffer
* @param size size of data buffer
* @param timeout timeout in CPU ticks
* @return true on successful transfer, false otherwise
*/
bool api_hal_i2c_rx(
I2C_TypeDef* instance,
const uint8_t address,
uint8_t* data,
const uint8_t size,
uint32_t timeout);
/**
* Perform I2C tx and rx transfers
* @param instance I2C_TypeDef instance
* @param address I2C slave address
* @param tx_data pointer to tx data buffer
* @param tx_size size of tx data buffer
* @param rx_data pointer to rx data buffer
* @param rx_size size of rx data buffer
* @param timeout timeout in CPU ticks
* @return true on successful transfer, false otherwise
*/
bool api_hal_i2c_trx(
I2C_TypeDef* instance,
const uint8_t address,
const uint8_t* tx_data,
const uint8_t tx_size,
uint8_t* rx_data,
const uint8_t rx_size,
uint32_t timeout);
/** Acquire I2C mutex */
void api_hal_i2c_lock();
/** Release I2C mutex */
void api_hal_i2c_unlock();
/**
* With clause for I2C peripheral
* @param type type of function_body
* @param pointer pointer to return of function_body
* @param function_body a (){} lambda declaration, executed with I2C mutex acquired
*/
#define with_api_hal_i2c(type, pointer, function_body) \
{ \
api_hal_i2c_lock(); \
*pointer = ({ type __fn__ function_body __fn__; })(); \
api_hal_i2c_unlock(); \
}
#ifdef __cplusplus
}
#endif