sd_uart.h

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

//#define CIRCBUFF          0x000001
//#define DOUBBUFF          0x000002
//#define BUFFTYPE          CIRCBUFF

#define SD_UART_ERROR_NONE      ((uint32_t)0x00)
#define SD_UART_ERROR_PARITY        ((uint32_t)0x01)
#define SD_UART_ERROR_FRAMING       ((uint32_t)0x02)
#define SD_UART_ERROR_NOISE     ((uint32_t)0x04)
#define SD_UART_ERROR_OVERRUN       ((uint32_t)0x08)

#define __SD_UART_ERROR_IT(__HANDLE__) ((__HANDLE__)->Instance->ISR & ((uint32_t)0x0F))

#define __SD_UART_CLEAR_ERROR_IT(__HANDLE__) ((__HANDLE__)->Instance->ICR = ((uint32_t)0x0F))

extern struct sd_uart_dev uart1_dev;
extern struct sd_uart_dev uart2_dev;
enum sd_uart_err {
    SD_UART_SUCCESS = 0x4A0D,       
    SD_UART_NULL_ERROR,         
    SD_UART_LOCKED,             
    SD_UART_TIMEOUT,            
    SD_UART_ERROR               
};

enum sd_uart_state {
    SD_UART_INITIALIZED = 0x0E60,       
    SD_UART_READY,              
    SD_UART_BUSY,               
    SD_UART_OVERFLOW            
};
  
struct sd_uart_dev {
    UART_HandleTypeDef      *uart;      
#if BUFFTYPE == CIRCBUFF
    struct sd_cbuf  *rx_buff;   
#elif BUFFTYPE == DOUBBUFF
    struct sd_doub_buff     *rx_buff;   
#endif
    enum sd_uart_state      state;      
    uint8_t      error;         
};

void sd_usart1_init         (void);
void sd_usart2_init         (void);
void sd_usart3_init         (void);
enum sd_uart_err sd_uart_rx_init    (struct sd_uart_dev *dev,
#if BUFFTYPE == CIRCBUFF
                     struct sd_cbuf *rx_buff);
#elif BUFFTYPE == DOUBBUFF
                     struct sd_doub_buff *rx_buff);
#endif
enum sd_uart_err sd_uart_transmit   (struct sd_uart_dev *dev,
                        uint8_t *buf,
                        uint32_t len,
                        uint32_t timeout);
void sd_uart_irqhandler         (struct sd_uart_dev *dev);
#ifdef __cplusplus
}
#endif
#else
#error "Multiple inclusion of sd_uart.h"
#endif /* __SD_UART_H */

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