stm32f10x串口初始化

robinwei

stm32f10x串口初始化 [复制链接]

void USART1_Init(void)

{

    USART_InitTypeDef USART_InitStructure;

  USART_InitStructure.USART_BaudRate = 115200;

  USART_InitStructure.USART_WordLength = USART_WordLength_8b;

  USART_InitStructure.USART_StopBits = USART_StopBits_1;

  USART_InitStructure.USART_Parity = USART_Parity_No;

  USART_InitStructure.USART_HardwareFlowControl = USART_HardwareFlowControl_None;

  USART_InitStructure.USART_Mode = USART_Mode_Rx | USART_Mode_Tx;

  USART_InitStructure.USART_Clock = USART_Clock_Disable;

  USART_InitStructure.USART_CPOL = USART_CPOL_Low;

  USART_InitStructure.USART_CPHA = USART_CPHA_2Edge;

  USART_InitStructure.USART_LastBit = USART_LastBit_Disable;

  /* Configure the USART1 */

  USART_Init(USART1, &USART_InitStructure);

/* Enable the USART Transmoit interrupt: this interrupt is generated when the 

   USART1 transmit data register is empty */  

  USART_ITConfig(USART1, USART_IT_TXE, DISABLE);

/* Enable the USART Receive interrupt: this interrupt is generated when the 

   USART1 receive data register is not empty */

  USART_ITConfig(USART1, USART_IT_RXNE, ENABLE); //中断方式接收

  /* Enable USART1 */

  USART_Cmd(USART1, ENABLE);

}

中断方式操作串口，为什么要把收中断disable？我尝试把它enable，结果设备初始化不成功，哪位大侠给解释下

robinwei

是发中断

电子机器人

这个和51一样的，发送用查询，接受用中断。所以把发送中断失能USART_ITConfig(USART1, USART_IT_TXE, DISABLE);