STM32F103C8T6串口程序编译错误，，求解，急！！！

丶大海 · 发表于 2017-9-8 14:04:45

程序如下：void UsartIoInit2(void)
{
GPIO_InitTypeDef  GPIO_InitStructure;
RCC_APB1PeriphClockCmd(RCC_APB1Periph_USART2,ENABLE);
RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA|RCC_APB2Periph_AFIO, ENABLE);
GPIO_InitStructure.GPIO_Mode =GPIO_Mode_AF_PP;
GPIO_InitStructure.GPIO_Pin =GPIO_Pin_2;
GPIO_InitStructure.GPIO_Speed =GPIO_Speed_10MHz;
GPIO_Init(GPIOA,&GPIO_InitStructure);

GPIO_InitStructure.GPIO_Mode =GPIO_Mode_IN_FLOATING ;
GPIO_InitStructure.GPIO_Pin =GPIO_Pin_3;
GPIO_Init(GPIOA,&GPIO_InitStructure);

}

void UsartInit2(void)
{
USART_InitTypeDef  USART_InitStructure;
NVIC_InitTypeDef NVIC_InitStructure;
   USART_DeInit(USART2);//¸′Î»′®¿ú
USART_InitStructure.USART_BaudRate =9600;
USART_InitStructure.USART_HardwareFlowControl =USART_HardwareFlowControl_None;
USART_InitStructure.USART_Mode =USART_Mode_Tx|USART_Mode_Rx;
USART_InitStructure.USART_WordLength =USART_WordLength_8b;
USART_InitStructure.USART_StopBits =USART_StopBits_1 ;
USART_InitStructure.USART_Parity =USART_Parity_No;
USART_Init(USART2,&USART_InitStructure);
USART_ITConfig(USART2,USART_IT_RXNE,ENABLE);
USART_Cmd(USART2,ENABLE);

NVIC_PriorityGroupConfig(NVIC_PriorityGroup_0);
NVIC_InitStructure.NVIC_IRQChannel=USART2_IRQn;
NVIC_InitStructure.NVIC_IRQChannelCmd =ENABLE ;
NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority =0;
NVIC_InitStructure.NVIC_IRQChannelSubPriority =1;
NVIC_Init(&NVIC_InitStructure);

}

void USART2_IRQHandler(void)
{
  if(USART_GetITStatus(USART2, USART_IT_RXNE)==SET)
{
   combuf[comnum]=USART_ReceiveData(USART2);
   comnum++;
if(comnum>1)
{
   comnum=0;
flag=0;
}
}
}

新手程序的结构不太完善，大神可以帮帮我，具体程序在附件里