本帖最后由 zhxingyu 于 2020-1-8 22:46 编辑
现用到STM32F103RC的串口1(PA9和PA10),给串口发送数据就while(USART_GetFlagStatus(USART1,USART_FLAG_TC)==RESET);在这里死循环,直至看门狗复位。
初始代码如下:
RCC_APB2PeriphClockCmd((RCC_APB2Periph_GPIOA | RCC_APB2Periph_AFIO), ENABLE);
GPIO_PinRemapConfig(GPIO_Remap_USART1,DISABLE);
RCC_APB1PeriphClockCmd(RCC_APB2Periph_USART1, ENABLE);
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_9; //TX
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_Init(GPIOA, &GPIO_InitStructure);
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_10; //RX
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN_FLOATING;
//GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_Init(GPIOA, &GPIO_InitStructure);
USART_InitStructure.USART_BaudRate = bound;
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;//ÎÞÓ²¼þÊý¾ÝÁ÷¿ØÖÆ
USART_InitStructure.USART_Mode = USART_Mode_Rx | USART_Mode_Tx;
USART_Init(USART1, &USART_InitStructure);
USART_ITConfig(USART1, USART_IT_IDLE, ENABLE);//¿ªÆô¿ÕÏÐÖжÏ
USART_Cmd(USART1, ENABLE);
USART_ClearFlag(USART1,USART_FLAG_TC);
请各位用过的朋友指导一下,谢谢!
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