常用稳定，易操作的实现

static uint8_t    gString[200];       // 开的越大传的越慢COM_PORT_INFO g_uart_struct[COM_PORT_NUM];void COMx_Send(uint8_t data[],uint16_t len, COMM_PORT_TYPE chID){    uint16_t i;    UART_HandleTypeDef  UsartCom;     switch(chID)        {        case GPS_UART_INDEX:            UsartCom = huart4;            break;            case TTL_UART_INDEX:            UsartCom = huart3;            break;        case BLE_UART_INDEX:            UsartCom = huart1;            break;        default:            return;        }    for(i=0;i
     
      Instance->DR = data[i];    }}void COMx_Revd(COMM_PORT_TYPE chID){    uint16_t timeout;    uint16_t max_len;    UART_HandleTypeDef  UsartCom;    if (chID == GPS_UART_INDEX)    {        UsartCom = huart4;        timeout = GPS_RX_FRAME_TIMEOUT;        max_len = USART_GPS_MAX_Rx_BUF_LEN;    }    else if(chID == TTL_UART_INDEX)    {        UsartCom = huart3;        timeout = TTL_RX_FRAME_TIMEOUT;         max_len = USART_TTL_MAX_Rx_BUF_LEN;    }    else if(chID == BLE_UART_INDEX)    {        UsartCom = huart1;        timeout = BLE_RX_FRAME_TIMEOUT;             max_len = USART_BLE_MAX_Rx_BUF_LEN;    }    if(__HAL_UART_GET_FLAG((&UsartCom), USART_SR_RXNE) != RESET)    {        if(g_uart_struct[chID].Rx_counter >= max_len)        {            g_uart_struct[chID].Rx_counter--;        }        g_uart_struct[chID].RecvDataBuff[g_uart_struct[chID].Rx_counter++] = READ_REG((&UsartCom)->Instance->DR);        g_uart_struct[chID].Rx_timeout = timeout;    }    __HAL_UART_CLEAR_FLAG((&UsartCom), USART_SR_PE|USART_SR_FE|USART_SR_NE|USART_SR_ORE);}void CommProc_uart(void){    uint8_t i;    uint8_t *data_buf;    uint16_t data_len;        for(i=GPS_UART_INDEX;i<=BLE_UART_INDEX;i++)    {        if((i == TTL_UART_INDEX) && (g_uart_struct[i].RxDoneFlag))        {            g_uart_struct[i].RxDoneFlag = false;            data_len = g_uart_struct[i].Rx_counter;            data_buf = g_uart_struct[i].RecvDataBuff;            /* user add */            memset(&g_uart_struct[i].RecvDataBuff,0,data_len);            g_uart_struct[i].Rx_counter = 0;        }    }}void CheckUartRxDone(void){    static uint32_t sys_tick_pre_val=0;    static uint32_t sys_tick_cur_val=0;    uint32_t i,past_ms_val;    sys_tick_cur_val = HAL_GetTick();    past_ms_val = sys_tick_cur_val-sys_tick_pre_val;    for(i=GPS_UART_INDEX;i<=BLE_UART_INDEX;i++)    {        if(g_uart_struct[i].Rx_timeout > 0)        {            if(g_uart_struct[i].Rx_timeout >= past_ms_val)            {                g_uart_struct[i].Rx_timeout -= past_ms_val;            }            else            {                g_uart_struct[i].Rx_timeout = 0;            }                        if(g_uart_struct[i].Rx_timeout == 0)            {                g_uart_struct[i].RxDoneFlag = true;            }        }    }    sys_tick_pre_val = sys_tick_cur_val;}void LocalPrintf(const char *fmt,...){        va_list ap;         memset(gString, 0, sizeof(gString));       va_start(ap,fmt);         vsprintf((char*)gString,fmt,ap);    COMx_Send(gString, sizeof(gString), TTL_UART_INDEX);    va_end(ap);}
     

#define     USART_GPS_MAX_Rx_BUF_LEN           ((uint16_t)512)    #define     GPS_RX_FRAME_TIMEOUT               ((uint16_t)50)    #define     USART_TTL_MAX_Rx_BUF_LEN           ((uint16_t)512)    #define     TTL_RX_FRAME_TIMEOUT               ((uint16_t)50)    #define     USART_BLE_MAX_Rx_BUF_LEN           ((uint16_t)512)    #define     BLE_RX_FRAME_TIMEOUT               ((uint16_t)150)///帧超时时间    #define COM_PORT_NUM                    ((uint8_t)3)        typedef struct    {        uint16_t Rx_counter;        uint16_t Rx_timeout;       //ms        bool     RxDoneFlag;       //断包标志        uint8_t  RecvDataBuff[1000];       //包缓存    }COM_PORT_INFO;        typedef enum    {        GPS_UART_INDEX = 0,                 /* GPS口 */        TTL_UART_INDEX,                     /* 维护口*/        BLE_UART_INDEX,                     /* 蓝牙口 */    }COMM_PORT_TYPE;                        /* 端口类型 */    extern COM_PORT_INFO g_uart_struct[COM_PORT_NUM];    void COMx_Revd(COMM_PORT_TYPE chID);    void COMx_Send(uint8_t data[],uint16_t len, COMM_PORT_TYPE chID);    void CommProc_uart(void);    void CheckUartRxDone(void);    void LocalPrintf(const char *fmt,...);