spi.h

[詳解]

 
#ifndef SPI_H_
#define SPI_H_
 
#include <stdint.h>
 
typedef enum
{
  SPI_MODE_0 = 0,  
  SPI_MODE_1 = 1,  
  SPI_MODE_2 = 2,  
  SPI_MODE_3 = 3   
} SPI_MODE;
 
typedef enum
{
  SPI_CS_STATE_AFTER_TX_HIGH = 0,   
  SPI_CS_STATE_AFTER_TX_LOW  = 1    
} SPI_CS_STATE_AFTER_TX;
 
typedef struct
{
  uint8_t  comm_ch;                        
  uint8_t  gpio_ch;                        
  uint32_t frequency_khz;                  
  SPI_MODE mode;                           
  uint8_t  tx_data_for_rx;                 
  uint16_t rx_length;                      
  SPI_CS_STATE_AFTER_TX cs_state_after_tx; 
} SPI_Config;
 
typedef enum
{
  SPI_ERR_UNKNOWN = -20,          
  SPI_ERR_RX_BUFFER_SMALL = -14,  
  SPI_ERR_DATA_NEGA = -13,        
  SPI_ERR_DATA_LARGE = -12,       
  SPI_ERR_GPIO = -5,              
  SPI_ERR_YET = -4,               
  SPI_ERR_ALREADY = -3,           
  SPI_ERR_FREQUENCY = -2,         
  SPI_ERR_CH = -1,                
  SPI_ERR_OK = 0                  
} SPI_ERR_CODE;
 
int SPI_init(void* my_spi_v);
 
int SPI_rx(void* my_spi_v, void* data_v, int buffer_size);
 
int SPI_tx(void* my_spi_v, void* data_v, int data_size);
 
int SPI_reopen(void* my_spi_v, int reason);
 
void SPI_set_rx_length(void* my_spi_v, const uint16_t rx_length);
 
void SPI_set_cs_state_after_tx(void* my_spi_v, const SPI_CS_STATE_AFTER_TX cs_state_after_tx);
 
#endif