无法进入接收中断

1万 · 2020-8-15 19:44

STM32F091芯片USART3~USART8无法进入接收中断

2万 · 2020-8-15 19:49

楼主程序可以公开吗？贴程序看下吧，这么说看不出什么原因

1万 · 2020-8-15 19:55

static void RCC_Configuration(void)
{
  /* Enable GPIO clock */
  RCC_AHBPeriphClockCmd(RCC_AHBPeriph_GPIOA|RCC_AHBPeriph_GPIOB|RCC_AHBPeriph_GPIOC|RCC_AHBPeriph_GPIOD|RCC_AHBPeriph_GPIOF, ENABLE);

  /* Enable 8xUSARTs Clock */
  RCC_APB1PeriphClockCmd(RCC_APB1Periph_USART2|RCC_APB1Periph_USART3|RCC_APB1Periph_USART4|RCC_APB1Periph_USART5, ENABLE);

  RCC_APB2PeriphClockCmd(RCC_APB2Periph_USART6|RCC_APB2Periph_USART7|RCC_APB2Periph_USART8|RCC_APB2Periph_USART1, ENABLE);
}
static void NVIC_Configuration(void)
{
  NVIC_InitTypeDef NVIC_InitStructure;

  /* USART1 IRQ Channel configuration */
  NVIC_InitStructure.NVIC_IRQChannel = USART1_IRQn;
  NVIC_InitStructure.NVIC_IRQChannelPriority = 0x01;
  NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
  NVIC_Init(&NVIC_InitStructure);

  /* USART2 IRQ Channel configuration */
  NVIC_InitStructure.NVIC_IRQChannel = USART2_IRQn;
  NVIC_InitStructure.NVIC_IRQChannelPriority = 0x01;
  NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
  NVIC_Init(&NVIC_InitStructure);

  /* USART3_8 IRQ Channel configuration */
  NVIC_InitStructure.NVIC_IRQChannel = USART3_8_IRQn;
  NVIC_InitStructure.NVIC_IRQChannelPriority = 0x01;
  NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
  NVIC_Init(&NVIC_InitStructure);
}
/* USART3 Pins configuration  ***********************************************/
  /* Connect pin to Periph */
  GPIO_PinAFConfig(GPIOB, GPIO_PinSource10, GPIO_AF_4);
  GPIO_PinAFConfig(GPIOB, GPIO_PinSource11, GPIO_AF_4);

  /* Configure pins as AF pushpull */
  GPIO_InitStructure.GPIO_Pin = GPIO_Pin_10 | GPIO_Pin_11;
  GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF;
  GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
  GPIO_InitStructure.GPIO_OType = GPIO_OType_PP;
  GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_NOPULL;
  GPIO_Init(GPIOB, &GPIO_InitStructure);

USART_InitStructure.USART_BaudRate = 9600;
      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(USART3, &USART_InitStructure);

            /* Enable 8xUSARTs Receive interrupts */
            USART_ITConfig(USART3, USART_IT_RXNE, ENABLE);

            /* Enable the 8xUSARTs */
            USART_Cmd(USART3, ENABLE);

void USART3_8_IRQHandler(void)
{
if(USART_GetITStatus(USART3, USART_IT_RXNE) != RESET)
  {
      dumm = USART_ReceiveData(USART3);
      // if(Usart_RxSetp(UsartIndex,dumm) == 0)return;
      Usart_RxSetp(UsartIndex,dumm);
  }
}
请帮忙看看USART3无法进入接收中断，能正常发送。当有数据时即进入死循环函数：
void HardFault_Handler(void)
{
  /* Go to infinite loop when Hard Fault exception occurs */
  while (1)
  {
  }
}

1万 · 2020-8-15 20:03

没用过这个，能用图形化配置吗

1万 · 2020-8-15 20:07

USART1和USART2能正常接收，USART3~USART8都不行，收到数据就进入死循环。

2万 · 2020-8-15 20:11

打断点看看死在哪个语句上了呀

2万 · 2020-8-15 20:14

中断函数里边卡死的？

1万 · 2020-8-15 20:22

哦，那我就知道怎么回事了，多谢大家

只看该作者 · 2020-8-15 21:43

解决了吗，啥情况导致的？