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求一個(gè)stm32f103rct6使用USART3收發(fā)數(shù)據(jù)的歷程，不勝感激!!!
void USART3_init(u32 bound)
{
GPIO_InitTypeDef GPIO_InitStructure;
USART_InitTypeDef USART_InitStructure;
NVIC_InitTypeDef NVIC_InitStructure;
RCC_APB1PeriphClockCmd(RCC_APB1Periph_USART3, ENABLE); //??USART3,GPIOB??
RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOB, ENABLE); //??USART3,GPIOB??
USART_DeInit(USART3); //????3
//USART3_TX PB10
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_10; //PB10
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_10MHz;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP; //??????
GPIO_Init(GPIOB, &GPIO_InitStructure); //???Pb10
//USART3_RX PB11
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_11;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IPU;//????
GPIO_Init(GPIOB, &GPIO_InitStructure); //???PB11
//Usart1 NVIC ??
NVIC_InitStructure.NVIC_IRQChannel = USART3_IRQn;
NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority=1 ;//?????3
NVIC_InitStructure.NVIC_IRQChannelSubPriority = 3; //????3
NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE; //IRQ????
NVIC_Init(&NVIC_InitStructure); //??????????VIC???
//USART ?????
USART_InitStructure.USART_BaudRate = bound;//?????115200;
USART_InitStructure.USART_WordLength = USART_WordLength_8b;//???8?????
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(USART3, &USART_InitStructure); //?????
USART_ITConfig(USART3, USART_IT_RXNE, ENABLE);//??USART3????
USART_Cmd(USART3, ENABLE); //????
}
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10 黑幣
