i2c.h

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#ifndef CORTEX_M4_I2C_H
#define CORTEX_M4_I2C_H
 
#include "utils/gpio_types.h"
#include <stdbool.h>
#include <stdint.h>

typedef enum {
    HAL_I2C_OK = 0,          
    HAL_I2C_ERR_TIMEOUT,     
    HAL_I2C_ERR_BUS,         
    HAL_I2C_ERR_NACK,        
    HAL_I2C_ERR_REINIT       
} hal_i2c_status_t;

typedef enum {
    I2C1 = 0, 
    I2C2 = 1, 
    I2C3 = 2  
} hal_i2c_bus_t;

typedef enum {
    STANDARD_MODE = 0, 
    FAST_MODE = 1      
} hal_i2c_speed_t;

#define I2C_MASTER 0

#define GPIO_FUNC_I2C GPIO_AF04

typedef struct {
    hal_i2c_speed_t clock_speed; 
    uint8_t own_address;         
    bool acknowledge;            
} hal_i2c_config_t;

hal_i2c_status_t hal_i2c_init(hal_i2c_bus_t bus, hal_i2c_config_t *config);

hal_i2c_status_t hal_i2c_write(uint8_t bus, uint8_t dev_addr,
                               const uint8_t *data, uint16_t len);

hal_i2c_status_t hal_i2c_read(uint8_t bus, uint8_t dev_addr, uint8_t *data,
                              uint16_t len);

hal_i2c_status_t hal_i2c_write_read(uint8_t bus, uint8_t dev_addr,
                                    const uint8_t *tx_data, uint16_t tx_len,
                                    uint8_t *rx_data, uint16_t rx_len);

uint8_t hal_i2c_get_init_status(void);
 
#endif // !CORTEX_M4_I2C_H