i2c.h

[詳解]

 
#ifndef I2C_H_
#define I2C_H_
 
#include <stdint.h>
 
typedef struct
{
  uint8_t  ch;                 
  uint32_t frequency_khz;      
  uint8_t  device_address;     
  uint8_t  stop_flag;          
  uint32_t timeout_threshold;  
  uint32_t rx_length;          
} I2C_Config;
 
typedef enum
{
  I2C_UNKNOWN_ERR     = -20,  
  I2C_RX_BUFFER_SMALL = -14,  
  I2C_DATA_NEGA_ERR   = -13,  
  I2C_TIMEOUT         = -10,  
  I2C_YET_ERR         = -4,   
  I2C_ALREADY_ERR     = -3,   
  I2C_FREQUENCY_ERR   = -2,   
  I2C_CH_ERR          = -1,   
  I2C_OK              = 0     
} I2C_ERR_CODE;
 
int I2C_init(void* my_i2c_v);
 
int I2C_rx(void* my_i2c_v, void* data_v, int buffer_size);
 
int I2C_tx(void* my_i2c_v, void* data_v, int data_size);
 
int I2C_reopen(void* my_i2c_v, int reason);
 
void I2C_set_stop_flag(void* my_i2c_v, const uint8_t stop_flag);
 
void I2C_set_rx_length(void* my_i2c_v, const uint32_t rx_length);
 
#endif