同时启动两个USART中断

we76092822 · 发表于 2016-8-24 16:53:48

本帖最后由 we76092822 于 2016-8-24 18:07 编辑

我目前使用了USART1跟USART6配置都一样但是只有USART1进得去接收中断USART6却进不去
想請問要怎麼才能讓USART6也進去
附上我的程式码
void bsp_InitUart(void)
{
      GPIO_InitTypeDef GPIO_InitStructure;
      USART_InitTypeDef USART_InitStructure;

      RCC_AHB1PeriphClockCmd(RCC_AHB1Periph_GPIOA | RCC_AHB1Periph_GPIOG, ENABLE);

      RCC_APB2PeriphClockCmd(RCC_APB2Periph_USART1 | RCC_APB2Periph_USART6, ENABLE);

      GPIO_PinAFConfig(GPIOA, GPIO_PinSource9, GPIO_AF_USART2);
      GPIO_PinAFConfig(GPIOG, GPIO_PinSource14, GPIO_AF_USART6);

      GPIO_PinAFConfig(GPIOA, GPIO_PinSource10, GPIO_AF_USART2);
      GPIO_PinAFConfig(GPIOG, GPIO_PinSource9, GPIO_AF_USART6);

      GPIO_InitStructure.GPIO_OType = GPIO_OType_PP;
      GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_UP;
      GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF;

      GPIO_InitStructure.GPIO_Pin = GPIO_Pin_9;
      GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
      GPIO_Init(GPIOA, &GPIO_InitStructure);

      GPIO_InitStructure.GPIO_Pin = GPIO_Pin_14;
      GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
      GPIO_Init(GPIOG, &GPIO_InitStructure);

      GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF;
      GPIO_InitStructure.GPIO_Pin = GPIO_Pin_10;
      GPIO_Init(GPIOA, &GPIO_InitStructure);

      GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF;
      GPIO_InitStructure.GPIO_Pin = GPIO_Pin_9;
      GPIO_Init(GPIOG, &GPIO_InitStructure);


      USART_InitStructure.USART_BaudRate = 19200;
      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);

      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;
      USART_Init(USART6, &USART_InitStructure);

      USART_Cmd(USART1, ENABLE);
      USART_Cmd(USART6, ENABLE);
      USART_ITConfig(USART1,USART_IT_RXNE,ENABLE);
      USART_ITConfig(USART6,USART_IT_RXNE,ENABLE);
      USART_ITConfig(USART1, USART_IT_ORE_RX, ENABLE);
      USART_ITConfig(USART6, USART_IT_ORE_RX, ENABLE);

}
void NVIC_Config(void)
{
NVIC_InitTypeDef NVIC_InitStructure;

      NVIC_PriorityGroupConfig(NVIC_PriorityGroup_2);
NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 0x01;
NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0x01;
NVIC_InitStructure.NVIC_IRQChannel  = USART6_IRQn;
NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
NVIC_Init(&NVIC_InitStructure);
      NVIC_EnableIRQ(USART6_IRQn);

NVIC_PriorityGroupConfig(NVIC_PriorityGroup_2);
NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 0x01;
NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0x01;
NVIC_InitStructure.NVIC_IRQChannel  = USART1_IRQn | USART6_IRQn;
NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
NVIC_Init(&NVIC_InitStructure);
      NVIC_EnableIRQ(USART1_IRQn);
}

void USART6_IRQHandler(void)
{

      if(USART_GetFlagStatus(USART6,USART_FLAG_RXNE)==SET)
{


            USART_ClearITPendingBit(USART6, USART_IT_RXNE);
            wififlag=1;
      }
}
void USART1_IRQHandler(void)
{

char c;
      char p;
      char b;
      char d;
      if(USART_GetFlagStatus(USART1,USART_FLAG_RXNE)==SET)
{

            c = USART_ReceiveData(USART1);
            d=(c&0xf0) /16;
            if(d==0x0A || d==0x0B || d==0x0C || d==0x0D || d==0x0E || d==0x0F)
                              d=d+0x37;
            if(d==0x00 || d==0x01 || d==0x02 || d==0x03 || d==0x04 || d==0x05 || d==0x06 || d==0x07 || d==0x08 || d==0x09)
                              d=d+0x30;
            b=(c&0x0f);
            if(b==0x0A || b==0x0B || b==0x0C || b==0x0D || b==0x0E || b==0x0F)
                              b=b+0x37;
            if(b==0x00 || b==0x01 || b==0x02 || b==0x03 || b==0x04 || b==0x05 || b==0x06 || b==0x07 || b==0x08 || b==0x09)
                              b=b+0x30;
            qaz[a] = d;
            a++;
            qaz[a]=b;

            a++;

            USART_ClearITPendingBit(USART1, USART_IT_RXNE);
            ttt=1;

}

zmingwang · 发表于 2016-8-24 16:53:49

本帖最后由 zmingwang 于 2016-8-25 17:25 编辑

主要检查几个地方:
1.GPIO寄存器对应位模式设置是否为2,复用寄存对应位值是否为8
2.检查NVIC中对应的中断向量是否使能
3.检查USART寄存器中的中断位是否置位
4.检查中断服务函数是否和启动文件中定义的函数名相同.
以上如果都对,那就是硬件连线的问题.

QQ截图20160825165805.png