sd_spi_bridge.h

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#ifndef __SD_SPI_BRIDGE_H
#define __SD_SPI_BRIDGE_H
#ifdef __cplusplus
extern "C" {
#endif

#define SD_SPBR_NDEV            (3)

#define SD_SPBR_I2C_STATUS      ((uint8_t)(1 << 0))
#define SD_SPBR_LED_STATUS      ((uint8_t)(1 << 1))
#define SD_SPBR_UART_STATUS     ((uint8_t)(1 << 2))


#define SD_SPBR_DEV_MASK        (0xF8)

#define SD_SPBR_I2C_DEV         (0x80)


#define SD_SPBR_CMD_MASK        (0xE0)

#define SD_SPBR_I2C_RW_CMD      (0xA0)

#define SD_SPBR_I2C_READ_TRANS      ((uint8_t)(1 << 2))
#define SD_SPBR_I2C_ADDR_10BIT      ((uint8_t)(1 << 3))
#define SD_SPBR_I2C_FREQ_400K       ((uint8_t)(1 << 4))



#define SD_SPBR_NULL_DEV        { 0, NULL, NULL }
#define SD_SPBR_NULL_OP         { 0, NULL, NULL }



enum sd_spbr_state {
    SD_SPBR_READ_DEVICE,
    SD_SPBR_READ_CMD,
    SD_SPBR_IN_PROCESS
};


struct sd_spbr_cmd {
    uint8_t opcode;
    void    (*start)(uint8_t *data);
    void    (*run)(uint8_t *data);
    void    (*end)(uint8_t *data);
};


struct sd_spbr_dev {
    uint8_t         id;                 
    struct sd_spbr_cmd  *curr_cmd;              
    struct sd_spbr_cmd  *cmds;                  
    void            (*dev_start)(uint8_t *data);        
};


struct sd_spbr {
    SPI_HandleTypeDef   *spi;
    struct sd_spbr_dev  *curr_dev;              
    struct sd_spbr_dev  *devs;                  
    enum sd_spbr_state  state;                  
};


extern struct sd_spbr spi2_spbr;

void sd_spbr_init(struct sd_spbr *spbr, SPI_HandleTypeDef *spi);
void sd_spbr_irqhandler(struct sd_spbr *spbr);

#ifdef __cplusplus
}
#endif
#else
#error "Multiple inclusion of sd_spi_bridge.h"
#endif /* __SD_SPI_BRIDGE_H */

/*
 * END OF FILE [sd_spi_bridge.h]
 */