串口4的库函数配置问题求解

80510393

void Usart4_Init_Configuration(u32 bound4)
{
GPIO_InitTypeDef GPIO_InitStructure;
   NVIC_InitTypeDef NVIC_InitStructure; 
USART_InitTypeDef  USART_InitStructure;


RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOC,ENABLE); 
RCC_APB2PeriphClockCmd(RCC_APB2Periph_AFIO,ENABLE); 
RCC_APB1PeriphClockCmd(RCC_APB1Periph_UART4,ENABLE);



//??????????
GPIO_InitStructure.GPIO_Pin=GPIO_Pin_10;//TX
GPIO_InitStructure.GPIO_Speed=GPIO_Speed_50MHz;
GPIO_InitStructure.GPIO_Mode=GPIO_Mode_AF_PP;
GPIO_Init(GPIOC,&GPIO_InitStructure);

GPIO_InitStructure.GPIO_Pin=GPIO_Pin_11;//RX
GPIO_InitStructure.GPIO_Mode=GPIO_Mode_IN_FLOATING;
GPIO_Init(GPIOC,&GPIO_InitStructure);


// NVIC_PriorityGroupConfig(NVIC_PriorityGroup_1); 

NVIC_InitStructure.NVIC_IRQChannel =UART4_IRQn; //
NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 0;  
NVIC_InitStructure.NVIC_IRQChannelSubPriority = 4; 
NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE; 
NVIC_Init(&NVIC_InitStructure);  //??????NVIC
 //??????NVIC



USART_InitStructure.USART_BaudRate=bound4;
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(UART4  ,&USART_InitStructure); 
USART_ITConfig(UART4  ,USART_IT_RXNE,ENABLE); 
USART_Cmd(UART4  ,ENABLE); 
USART_ClearFlag(UART4  ,USART_FLAG_TC); 

}
这个有问题吗？求大神解释。

正点原子

下载试试能不能工作,就知道有没有问题了.