精英版串口3不能收发数据

乱了夏天蓝了海

精英版连接8266模块，不能收发数据

[mw_shl_code=c,true]void USART3_Init(uint32_t baud) {
    NVIC_InitTypeDef NVIC_InitStructure;
    GPIO_InitTypeDef GPIO_InitStructure;
    USART_InitTypeDef USART_InitStructure;

    //        RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOB, ENABLE);        // GPIOB时钟
    //        RCC_APB1PeriphClockCmd(RCC_APB1Periph_USART3,ENABLE); //串口3时钟使能

    RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOB | RCC_APB2Periph_AFIO, ENABLE);  
    GPIO_PinRemapConfig(GPIO_FullRemap_USART3, ENABLE); //USART3 remap   
    RCC_APB1PeriphClockCmd(RCC_APB1Periph_USART3, ENABLE);

    USART_DeInit(USART3);  //复位串口3
    //USART3_TX   PB10
    GPIO_InitStructure.GPIO_Pin = GPIO_Pin_10; //PB10
    GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
    GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP;        //复用推挽输出
    GPIO_Init(GPIOB, &GPIO_InitStructure); //初始化PB10

    //USART3_RX          PB11
    GPIO_InitStructure.GPIO_Pin = GPIO_Pin_11;
    GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN_FLOATING;//浮空输入
    GPIO_Init(GPIOB, &GPIO_InitStructure);  //初始化PB11

    USART_InitStructure.USART_BaudRate = baud;//波特率一般设置为9600;
    USART_InitStructure.USART_WordLength = USART_WordLength_8b;//字长为8位数据格式
    USART_InitStructure.USART_StopBits = USART_StopBits_1;//一个停止位
    USART_InitStructure.USART_Parity = USART_Parity_No;//无奇偶校验位
    USART_InitStructure.USART_HardwareFlowControl = USART_HardwareFlowControl_None;//无硬件数据流控制
    USART_InitStructure.USART_Mode = USART_Mode_Rx | USART_Mode_Tx;        //收发模式

    USART_Init(USART3, &USART_InitStructure); //初始化串口        3


    USART_Cmd(USART3, ENABLE);                    //使能串口

    //使能接收中断
    USART_ITConfig(USART3, USART_IT_RXNE, ENABLE);//开启中断   

    //设置中断优先级
    NVIC_InitStructure.NVIC_IRQChannel = USART3_IRQn;
    NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority=2 ;//抢占优先级3
    NVIC_InitStructure.NVIC_IRQChannelSubPriority = 3;                //子优先级3
    NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;                        //IRQ通道使能
    NVIC_Init(&NVIC_InitStructure);        //根据指定的参数初始化VIC寄存器

    USART3_RX_STA=0;                //清零
}[/mw_shl_code]

发送代码:
[mw_shl_code=c,true]        while ( USART_GetFlagStatus(USART3, USART_FLAG_TC) == RESET );
        USART_SendData(USART3, byte);[/mw_shl_code]

login_FAE

USART3完全重映射，就映射到PD8  PD9去了

lvkanger

中断服务函数呢？