/**
* @brief USART1 GPIO 配置,工作模式配置。115200 8-N-1
* @param 无
* @retval 无
*/
void USART1_Config(uint32_t BaudRate)
{
GPIO_InitTypeDef GPIO_InitStructure;
USART_InitTypeDef USART_InitStructure;
/* config USART1 clock */
RCC_APB2PeriphClockCmd(RCC_APB2Periph_USART1 | RCC_APB2Periph_GPIOA, ENABLE);
/* USART1 GPIO config */
/* Configure USART1 Tx (PA.09) as alternate function push-pull */
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_9;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_Init(GPIOA, &GPIO_InitStructure);
/* Configure USART1 Rx (PA.10) as input floating */
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_10;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN_FLOATING;
GPIO_Init(GPIOA, &GPIO_InitStructure);
/* USART1 mode config */
USART_InitStructure.USART_BaudRate = BaudRate;
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_Init(USART1, &USART_InitStructure);
/* 使能串口2接收中断 */
USART_ITConfig(USART1, USART_IT_RXNE, ENABLE);
USART_ClearFlag(USART1,USART_FLAG_TC);//先清除一下发送中断标志位，会解决第一个字节丢失的问题。
USART_Cmd(USART1, ENABLE);
USART1_NVIC_Configuration(ENABLE);
USART_DMACmd(USART1,USART_DMAReq_Tx,ENABLE);
}
static void USART1_Configuration(void)
{
// Periph CLK Init
RCC_APB2PeriphClockCmd(RCC_APB2Periph_USART1 |
RCC_APB2Periph_GPIOA, ENABLE);
// GPIO Pins for UART1
USART1_GPIO_Configuration();
// NVIC for UART1
USART1_NVIC_Configuration();
// --------------- USART1 configuration ---------------
// USART1 configured as follow:
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;
// 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, ENABLE);
// 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);
// Enable USART1
USART_Cmd(USART1, ENABLE);
}
void USART1_Config(void) {
RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA | RCC_APB2Periph_USART1,
ENABLE);
USART_ClockInitTypeDef USART_ClockInitStructure;
GPIO_InitTypeDef UARTTX;
UARTTX.GPIO_Pin = GPIO_Pin_9;
UARTTX.GPIO_Mode = GPIO_Mode_AF_PP;
UARTTX.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_InitTypeDef UARTRX;
UARTRX.GPIO_Pin = GPIO_Pin_10;
UARTRX.GPIO_Mode = GPIO_Mode_IPU;
UARTRX.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_Init(GPIOA, &UARTTX);
GPIO_Init(GPIOA, &UARTRX);
USART_ClockStructInit(&USART_ClockInitStructure);
USART_ClockInit(USART1, &USART_ClockInitStructure);
USART_InitTypeDef UART1;
UART1.USART_BaudRate = 9600;
UART1.USART_WordLength = USART_WordLength_8b;
UART1.USART_StopBits = USART_StopBits_1;
UART1.USART_Parity = USART_Parity_No;
UART1.USART_HardwareFlowControl = USART_HardwareFlowControl_None;
UART1.USART_Mode = USART_Mode_Rx | USART_Mode_Tx;
USART_Init(USART1, &UART1);
USART_Cmd(USART1, ENABLE);
USART1_NVIC_Configuration();
}
