PA9 PA10如何作为普通IO DISABLE串口1还是不行

AlohaHajaHe

void uart_init(u32 bound){
  //GPIO端口设置
  GPIO_InitTypeDef GPIO_InitStructure;
        USART_InitTypeDef USART_InitStructure;
        NVIC_InitTypeDef NVIC_InitStructure;
//        GPIO_PinRemapConfig(GPIO_Remap_USART1,ENABLE);
//        RCC_APB2PeriphClockCmd(RCC_APB2Periph_USART1|RCC_APB2Periph_GPIOB, ENABLE);        //使能USART1，GPIOA时钟
  RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOB | RCC_APB2Periph_AFIO,ENABLE);
  GPIO_PinRemapConfig(GPIO_Remap_USART1,ENABLE);
       
        //USART1_TX   GPIOA.9
  GPIO_InitStructure.GPIO_Pin = GPIO_Pin_6; //PA.9
  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GPIOA.9

  //USART1_RX          GPIOA.10初始化
  GPIO_InitStructure.GPIO_Pin = GPIO_Pin_7;//PA10
  GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN_FLOATING;//浮空输入
  GPIO_Init(GPIOB, &GPIO_InitStructure);//初始化GPIOA.10  

  //Usart1 NVIC 配置
  NVIC_InitStructure.NVIC_IRQChannel = USART1_IRQn;
        NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority=3 ;//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

   //USART 初始化设置

        USART_InitStructure.USART_BaudRate = bound;//串口波特率
        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(USART1, &USART_InitStructure); //初始化串口1
  USART_ITConfig(USART1, USART_IT_RXNE, ENABLE);//开启串口接受中断
  USART_Cmd(USART1, DISABLE);                    //使能串口1

}

AlohaHajaHe

一直输出高电平状态

a1281854907

你不运行初始化串口一这一句就行了啊