Usart1_Config
void Usart1_Config(void) { GPIO_InitTypeDef GPIO_InitStructure; USART_InitTypeDef USART_InitStructure; //使能 PA AFIO总线 串口1 RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA| RCC_APB2Periph_AFIO| RCC_APB2Periph_USART1,ENABLE); //GPIO初始化 PA9 TX ,PA10 RX GPIO_InitStructure.GPIO_Pin=GPIO_Pin_9; 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; GPIO_InitStructure.GPIO_Mode=GPIO_Mode_IN_FLOATING; GPIO_Init(GPIOA,&GPIO_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_Rx | USART_Mode_Tx; /* USART_ClockInitStructure.USART_Clock = USART_Clock_Disable; USART_ClockInitStructure.USART_CPOL = USART_CPOL_Low; USART_ClockInitStructure.USART_CPHA = USART_CPHA_2Edge; USART_ClockInitStructure.USART_LastBit = USART_LastBit_Disable;*/ USART_Init(USART1,&USART_InitStructure); // USART_ClockInit(USART1,&USART_ClockInitStructure); // USART_ITConfig(USART1,USART_IT_RXNE,ENABLE); USART_Cmd(USART1,ENABLE); }
Usart2_Config
void Usart2_Config(void) { GPIO_InitTypeDef GPIO_InitStructure; USART_InitTypeDef USART_InitStructure; /* Enable GPIO clock */ RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOD | RCC_APB2Periph_AFIO, ENABLE); /* Enable the USART2 Pins Software Remapping */ GPIO_PinRemapConfig(GPIO_Remap_USART2, ENABLE); RCC_APB1PeriphClockCmd(RCC_APB1Periph_USART2, ENABLE); /* Configure USART Tx as alternate function push-pull PD5*/ GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP; GPIO_InitStructure.GPIO_Pin = GPIO_Pin_5; GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz; GPIO_Init(GPIOD, &GPIO_InitStructure); /* Configure USART Rx as input floating PD6*/ GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN_FLOATING; GPIO_InitStructure.GPIO_Pin = GPIO_Pin_6; GPIO_Init(GPIOD, &GPIO_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_Rx | USART_Mode_Tx; /* USART configuration */ USART_Init(USART2, &USART_InitStructure); /* Enable USART */ USART_Cmd( USART2, ENABLE); }