文件(usart.h)：

#ifndef _USART__H

#define _USART__H

#define EMPTY 0xFFFF

extern vu32 uart2_transfer_complete;

typedef enum {

BSP_UART_STOPBITS_1=1,

BSP_UART_STOPBITS_2=2

}BSP_UART_StopBits;

typedef enum {

BSP_UART_PARITY_NO=0,

BSP_UART_PARITY_ODD=1,

BSP_UART_PARITY_EVEN=2

}BSP_UART_Parity;

typedef enum {

DATA_SIZE_BYTE=1,

DATA_SIZE_HALF_WORD=2

}BSP_UART_DataSize;

typedef void (*usart_hook_func_t)(u16 recv_data);

void bsp_ISR_uart1_setRecvHook(usart_hook_func_t func);

void bsp_ISR_uart2_setRecvHook(usart_hook_func_t func);

void bsp_ISR_uart3_setRecvHook(usart_hook_func_t func);

void bsp_ISR_uart4_setRecvHook(usart_hook_func_t func);

void bsp_ISR_uart5_setRecvHook(usart_hook_func_t func);

void bsp_uart1_config(u32 bps, BSP_UART_StopBits stopbits, BSP_UART_Parity parity, u8 databits, BSP_UART_DataSize ds);

void bsp_uart2_config(u32 bps, BSP_UART_StopBits stopbits, BSP_UART_Parity parity, u8 databits, BSP_UART_DataSize ds);

void bsp_uart3_config(u32 bps, BSP_UART_StopBits stopbits, BSP_UART_Parity parity, u8 databits, BSP_UART_DataSize ds);

void bsp_uart4_config(u32 bps, BSP_UART_StopBits stopbits, BSP_UART_Parity parity, u8 databits, BSP_UART_DataSize ds);

void bsp_uart5_config(u32 bps, BSP_UART_StopBits stopbits, BSP_UART_Parity parity, u8 databits, BSP_UART_DataSize ds);

void bsp_uart1_send_u8(u8* buf, u16 size);

void bsp_uart1_send_u16(u16* buf, u16 size);

void bsp_uart2_send_u8(u8* buf, u16 size);

void bsp_uart2_send_u16(u16* buf, u16 size);

void bsp_uart3_send_u8(u8* buf, u16 size);

void bsp_uart3_send_u16(u16* buf, u16 size);

void bsp_uart4_send_u8(u8* buf, u16 size);

void bsp_uart4_send_u16(u16* buf, u16 size);

void bsp_uart5_send_u8(u8* buf, u16 size);

void bsp_uart5_send_u16(u16* buf, u16 size);

/****************************************************************************************/

void bsp_ISR_uart1_putRecvData(u8 data); /* macro_ISR_uart_putRecvData */

void bsp_ISR_uart1_putSendData(u8 data); /* macro_ISR_uart_putSendData */

u16 bsp_uart1_getRecvData(void); /* macro_uart_getRecvData */

u16 bsp_uart1_getSendData(void); /* macro_uart_getSendData */

u8 bsp_uart1_recvBufIsFull(void); /* macro_uart_recvBufIsFull */

u8 bsp_uart1_sendBufIsFull(void); /* macro_uart_sendBufIsFull */

u8 bsp_uart1_sendBufIsEmpty(void); /* macro_uart_sendBufIsEmpty */

void bsp_uart1_cleanAllBuffer(void); /* macro_uart_cleanAllBuffer */

u16 bsp_uart1_recvBufRemain(void); /* macro_uart_recvBufRemain */

u16 bsp_uart1_sendbufRemain(void); /* macro_uart_sendbufRemain */

/******************************************************************************************/

void bsp_ISR_uart2_putRecvData(u8 data); /* macro_ISR_uart_putRecvData */

void bsp_ISR_uart2_putSendData(u8 data); /* macro_ISR_uart_putSendData */

u16 bsp_uart2_getRecvData(void); /* macro_uart_getRecvData */

u16 bsp_uart2_getSendData(void); /* macro_uart_getSendData */

u8 bsp_uart2_recvBufIsFull(void); /* macro_uart_recvBufIsFull */

u8 bsp_uart2_sendBufIsFull(void); /* macro_uart_sendBufIsFull */

u8 bsp_uart2_sendBufIsEmpty(void); /* macro_uart_sendBufIsEmpty */

void bsp_uart2_cleanAllBuffer(void); /* macro_uart_cleanAllBuffer */

u16 bsp_uart2_recvBufRemain(void); /* macro_uart_recvBufRemain */

u16 bsp_uart2_sendbufRemain(void); /* macro_uart_sendbufRemain */

/******************************************************************************************/

void bsp_ISR_uart3_putRecvData(u8 data); /* macro_ISR_uart_putRecvData */

void bsp_ISR_uart3_putSendData(u8 data); /* macro_ISR_uart_putSendData */

u16 bsp_uart3_getRecvData(void); /* macro_uart_getRecvData */

u16 bsp_uart3_getSendData(void); /* macro_uart_getSendData */

u8 bsp_uart3_recvBufIsFull(void); /* macro_uart_recvBufIsFull */

u8 bsp_uart3_sendBufIsFull(void); /* macro_uart_sendBufIsFull */

u8 bsp_uart3_sendBufIsEmpty(void); /* macro_uart_sendBufIsEmpty */

void bsp_uart3_cleanAllBuffer(void); /* macro_uart_cleanAllBuffer */

u16 bsp_uart3_recvBufRemain(void); /* macro_uart_recvBufRemain */

u16 bsp_uart3_sendbufRemain(void); /* macro_uart_sendbufRemain */

/******************************************************************************************/

void bsp_ISR_uart4_putRecvData(u8 data); /* macro_ISR_uart_putRecvData */

void bsp_ISR_uart4_putSendData(u8 data); /* macro_ISR_uart_putSendData */

u16 bsp_uart4_getRecvData(void); /* macro_uart_getRecvData */

u16 bsp_uart4_getSendData(void); /* macro_uart_getSendData */

u8 bsp_uart4_recvBufIsFull(void); /* macro_uart_recvBufIsFull */

u8 bsp_uart4_sendBufIsFull(void); /* macro_uart_sendBufIsFull */

u8 bsp_uart4_sendBufIsEmpty(void); /* macro_uart_sendBufIsEmpty */

void bsp_uart4_cleanAllBuffer(void); /* macro_uart_cleanAllBuffer */

u16 bsp_uart4_recvBufRemain(void); /* macro_uart_recvBufRemain */

u16 bsp_uart4_sendbufRemain(void); /* macro_uart_sendbufRemain */

/******************************************************************************************/

void bsp_ISR_uart5_putRecvData(u8 data); /* macro_ISR_uart_putRecvData */

void bsp_ISR_uart5_putSendData(u8 data); /* macro_ISR_uart_putSendData */

u16 bsp_uart5_getRecvData(void); /* macro_uart_getRecvData */

u16 bsp_uart5_getSendData(void); /* macro_uart_getSendData */

u8 bsp_uart5_recvBufIsFull(void); /* macro_uart_recvBufIsFull */

u8 bsp_uart5_sendBufIsFull(void); /* macro_uart_sendBufIsFull */

u8 bsp_uart5_sendBufIsEmpty(void); /* macro_uart_sendBufIsEmpty */

void bsp_uart5_cleanAllBuffer(void); /* macro_uart_cleanAllBuffer */

u16 bsp_uart5_recvBufRemain(void); /* macro_uart_recvBufRemain */

u16 bsp_uart5_sendbufRemain(void); /* macro_uart_sendbufRemain */

#endif

文件(usart.c)：

/*

************************************************************************

** brief : 串口驅(qū)動

** note : 接收和發(fā)送BUFFER,需要根據(jù)實際情況修改大小

************************************************************************

*/

#include "usart.h"

#define USART1_SEND_BUF_SIZE 280

#define USART1_RECV_BUF_SIZE 256*2

#define USART2_SEND_BUF_SIZE 256*1

#define USART2_RECV_BUF_SIZE 256*2

#define USART3_SEND_BUF_SIZE 256*1

#define USART3_RECV_BUF_SIZE 256*1

#define USART4_SEND_BUF_SIZE 256*1

#define USART4_RECV_BUF_SIZE 256*2

#define USART5_SEND_BUF_SIZE 256*1

#define USART5_RECV_BUF_SIZE 256*1

/*

****************************************************************

** brief : 定義USART1-USART5的數(shù)據(jù)

** USART1_SEND_BUF - USART5_SEND_BUF

** USART1_RECV_BUF - USART5_RECV_BUF

** uart1SendHead - uart5SendHead

** uart1SendTail - uart5SendTail

** uart1RecvHead - uart5RecvHead

** uart5RecvTail - uart5RecvTail

****************************************************************

*/

#define UART_BUF_DEFINE(uartNo)

static u8 USART##uartNo##_SEND_BUF[USART##uartNo##_SEND_BUF_SIZE];

static vu16 uart##uartNo##SendHead=0;

static vu16 uart##uartNo##SendTail=0;

static vu8 UART##uartNo##_RECV_BUF[USART##uartNo##_RECV_BUF_SIZE];

static vu16 uart##uartNo##RecvHead=0;

static vu16 uart##uartNo##RecvTail=0;

UART_BUF_DEFINE(1);

UART_BUF_DEFINE(2);

UART_BUF_DEFINE(3);

UART_BUF_DEFINE(4);

UART_BUF_DEFINE(5);

/*

**************************************************************************************

** brief : 串口1配置初始化

** bsp : 波特率1200 2400 4800 9600 ... 115200，不能小于1200

** stopb : 停止位

** p : 奇偶校驗位

** databits : 數(shù)據(jù)位7 or 8 or 9

** ds : DMA數(shù)據(jù)寬度

**************************************************************************************

*/

void bsp_uart1_config(u32 bps, BSP_UART_StopBits stopb, BSP_UART_Parity p, u8 databits, BSP_UART_DataSize ds)

{

u16 stopbits;

u16 parity;

if (stopb == BSP_UART_STOPBITS_1) stopbits = USART_StopBits_1;

else if(stopb == BSP_UART_STOPBITS_2)stopbits = USART_StopBits_2;

else stopbits = USART_StopBits_1;

if(p == BSP_UART_PARITY_NO) parity = USART_Parity_No;

else if(p == BSP_UART_PARITY_EVEN) parity = USART_Parity_Even;

else if(p == BSP_UART_PARITY_ODD) parity = USART_Parity_Odd;

else parity = USART_Parity_No;

u32 dataSize = DMA_PeripheralDataSize_Byte;

if(ds == DATA_SIZE_HALF_WORD) {

dataSize = DMA_PeripheralDataSize_HalfWord;

} else {

dataSize = DMA_Periphe