代码没多少，就是配置一下直接发数据
使用PA6 PA7 发送串口数据
int main(void)
{
NVIC_PriorityGroupConfig(NVIC_PriorityGroup_2);
Delay_Init();
// USART_interIni();
GPIO_InitTypeDef GPIO_InitStructure = {0};
USART_InitTypeDef USART_InitStructure = {0};
NVIC_InitTypeDef NVIC_InitStructure = {0};
RCC_APB1PeriphClockCmd(RCC_APB1Periph_UART7 , ENABLE);
RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA |RCC_APB2Periph_AFIO, ENABLE);
//RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA , ENABLE);
GPIO_PinRemapConfig(GPIO_FullRemap_USART7,ENABLE);
//GPIO_PinRemapConfig(GPIO_PartialRemap_USART7,ENABLE);
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_6;
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_7;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN_FLOATING;
GPIO_Init(GPIOA, &GPIO_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_Tx | USART_Mode_Rx;
USART_Init(UART7, &USART_InitStructure);
USART_ITConfig(UART7, USART_IT_RXNE, DISABLE);
NVIC_InitStructure.NVIC_IRQChannel = UART7_IRQn;
NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 2;
NVIC_InitStructure.NVIC_IRQChannelSubPriority = 2;
NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
NVIC_Init(&NVIC_InitStructure);
USART_Cmd(UART7, ENABLE);
//u8 TxBuffer2[] = "#Buffer2 Send from USART3 to USART2 using HalfDuplex Mode!";
while(1)
{
Delay_Ms(1000);
for(int i=0;i<20;i++)
USART_SendData(UART7, TxBuffer2[i]);
}
}
