STN32F103C的串口1发送数据一直是“0x00”
2019-07-14 15:35发布
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- void usart1_io_init(void)
- {
- GPIO_InitTypeDef GPIO_InitStructure;
- RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA | RCC_APB2Periph_AFIO | RCC_APB2Periph_USART1, ENABLE);
- GPIO_InitStructure.GPIO_Pin = GPIO_Pin_9; //USART1 Tx(PA.09)
- GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
- GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP;
- GPIO_Init(GPIOA, &GPIO_InitStructure);
-
- GPIO_InitStructure.GPIO_Pin = GPIO_Pin_10; //USART1 Rx(PA.10)
- GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN_FLOAtiNG;
- GPIO_Init(GPIOA, &GPIO_InitStructure);
- }
- void USART1_Configuration(void)
- {
- USART_InitTypeDef USART_InitStructure;
- USART_InitStructure.USART_BaudRate = 9600;
- 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_Tx | USART_Mode_Rx;
- USART_Init(USART1, &USART_InitStructure);
- USART_Cmd(USART1, ENABLE); //ʹÄÜusart1
- }
- void NVIC_Configuration(void)
- {
- NVIC_InitTypeDef NVIC_InitStructure;
- NVIC_PriorityGroupConfig(NVIC_PriorityGroup_0);
- NVIC_InitStructure.NVIC_IRQChannel = USART1_IRQn;
- NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 0;
- NVIC_InitStructure.NVIC_IRQChannelSubPriority = 1;
- NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
- NVIC_Init(&NVIC_InitStructure);
- }
- void usart1_send_data(uint8_t data)
- {
- USART_SendData(USART1,data);
- while(USART_GetFlagStatus(USART1,USART_FLAG_TXE)==RESET);
- }
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