STM32F0改成stm32g0，外部中断线配制后，中断不工作...

challenger · 发表于 2024-2-20 14:38:37

本帖最后由 challenger 于 2024-2-20 14:40 编辑

STM32F0换成STM32G0芯片后，配制PB3外部中断线，发现EXTI2_3_IRQHandler不工作，这是什么鬼？

void init_PB3_pin(void)
{
#if 0  //STM32F0

  /* 1 - Enable the peripheral clock of GPIOB */
  //RCC->AHBENR |= (1 << 18);

  /* 2 - Select input mode (00) on PB3, reset is input mode */

  /* 3 - Pull-up/Pull-down resistor configuration */
  //GPIOB->PUPDR |= (1 << 6);

#else  ////STM32g0

  GPIO_InitTypeDef GPIO_InitStruct = {0};

  __HAL_RCC_GPIOB_CLK_ENABLE();

  #if 0
GPIO_InitStruct.Pin = GPIO_PIN_3;
GPIO_InitStruct.Mode = GPIO_MODE_IT_FALLING;

GPIO_InitStruct.Pull = GPIO_PULLUP;
GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_HIGH;
GPIO_InitStruct.Alternate = 0;//0
HAL_GPIO_Init(GPIOB, &GPIO_InitStruct);

HAL_NVIC_SetPriority(EXTI2_3_IRQn, 3, 1);
HAL_NVIC_EnableIRQ(EXTI2_3_IRQn);
  #else
   /*Configure GPIO pin : PB3 */
GPIO_InitStruct.Pin = GPIO_PIN_3;
GPIO_InitStruct.Mode = GPIO_MODE_INPUT;
GPIO_InitStruct.Pull = GPIO_NOPULL;
HAL_GPIO_Init(GPIOB, &GPIO_InitStruct);

  #endif

#endif
}

//下面这个STM32G0外部中断线配制不工作，程序如下：

void config_exti_line3_to_zerox(unsigned char enable_disable)
{

  init_PB3_pin();
///////////////////////////////////////////////////
  /* Enable SYSCFG clock */

#if 0 //STM32F0 配制
  RCC->APB2ENR |= RCC_APB2ENR_SYSCFGEN;

#else  //STM32G0配制

//  RCC->APBENR2 |= RCC_APBENR2_SYSCFGEN;
  __HAL_RCC_SYSCFG_CLK_ENABLE();
#endif

  /* Connect EXTI3 Line to PB3 pin */
  uint32_t tmp = 0x00;

#if 0 //STM32F0 配制
  tmp = ((uint32_t)0x0F) << (0x04 * (((uint8_t)0x03) & (uint8_t)0x03));
  SYSCFG->EXTICR[((uint8_t)0x03) >> 0x02] &= ~tmp;
  SYSCFG->EXTICR[((uint8_t)0x03) >> 0x02] |= (((uint32_t)((uint8_t)0x01)) << (0x04 * (((uint8_t)0x03) & (uint8_t)0x03)));

#else  //STM32G0配制

  tmp = ((uint32_t)0x0F) << (0x08 * (((uint8_t)0x03) & (uint8_t)0x03));
  EXTI->EXTICR[((uint8_t)0x03) >> 0x02] &= ~tmp;
  EXTI->EXTICR[((uint8_t)0x03) >> 0x02] |= (((uint32_t)((uint8_t)0x01)) << (0x08 * (((uint8_t)0x03) & (uint8_t)0x03)));
#endif

  /* Configure EXTI3 line */
  tmp = (uint32_t)EXTI_BASE;

  if(enable_disable == ENABLE)
  {
/* Clear EXTI line configuration */

#if 0 //STM32F0 配制

EXTI->IMR &= ~((uint32_t)0x00000008);
EXTI->EMR &= ~((uint32_t)0x00000008);

#else  //STM32G0 配制

EXTI->IMR1 &= ~((uint32_t)0x00000008);
EXTI->EMR1 &= ~((uint32_t)0x00000008);

#endif
tmp += 0x00;

*(__IO uint32_t *) tmp |= ((uint32_t)0x00000008);

/* Clear Rising Falling edge configuration */

#if 0 //STM32F0 配制
EXTI->RTSR &= ~((uint32_t)0x00000008);
EXTI->FTSR &= ~((uint32_t)0x00000008);

#else //STM32g0 配制

EXTI->RTSR1 &= ~((uint32_t)0x00000008);
EXTI->FTSR1 &= ~((uint32_t)0x00000008);
#endif
/* Select the trigger for the selected interrupts */

tmp = (uint32_t)EXTI_BASE;
/* falling edge set */
tmp += 0x0C;

*(__IO uint32_t *) tmp |= ((uint32_t)0x00000008);
  }
  else
  {
tmp += 0x00;

/* Disable the selected external lines */
*(__IO uint32_t *) tmp &= ~((uint32_t)0x00000008);
  }

  /* Configure NVIC for External Interrupt */

  /* Enable Interrupt on EXTI2_3 */
  NVIC_EnableIRQ(EXTI2_3_IRQn);

  /* Set priority for EXTI2_3 */
  NVIC_SetPriority(EXTI2_3_IRQn,0);
}

void EXTI2_3_IRQHandler(void)
{
#if 0  //STM32F0
  if((EXTI->pR & ((uint32_t)0x00000008)) != 0)  /* Check line 3 has triggered the IT */
  {
printf("EXTI2_3_IRQHandler:pR=%d\r\n",(EXTI->pR & ((uint32_t)0x00000008)));
   ......................
/* Clear the EXTI line 3 pending bit */
EXTI->pR = ((uint32_t)0x00000008);
  }

#else  //stm32g0

  if((EXTI->FPR1 & ((uint32_t)0x00000008)) != 0)  /* Check line 3 has triggered the IT */
  {
   printf("EXTI2_3_IRQHandler:FPR1=%d\r\n",(EXTI->FPR1 & ((uint32_t)0x00000008)));
......................
EXTI->FPR1 = ((uint32_t)0x00000008);
  }

}
以上程序在STM32F0基础上，改为STM32G0后，发现EXTI2_3_IRQHandler不工作，找了半天，没找出问题。有哪位大虾，玩过STM32G0系列的，程序哪里配制有问题？

challenger · 发表于 2024-2-20 14:38:38

搞定了，是程序边沿中断时序的问题，还有一个定时器控制有点问题。

马超飞燕 · 发表于 2024-2-20 14:49:46

寄存器配置怎么不用库函数呢

challenger · 发表于 2024-2-20 15:56:06

马超飞燕发表于 2024-2-20 14:49
寄存器配置怎么不用库函数呢

代码早期是STM32F0的，早期是别人做的，用寄存器，后面我接手了，换芯片为STM32G0, 不可能全部重新弄，以前能用的，就不想改。于是就这样。

马超飞燕 · 发表于 2024-2-20 16:19:36

本帖最后由马超飞燕于 2024-2-20 16:27 编辑

challenger 发表于 2024-2-20 15:56
代码早期是STM32F0的，早期是别人做的，用寄存器，后面我接手了，换芯片为STM32G0, 不可能全部重新弄，以 ...

那对着应用手册对看那块没初始化对，这个别人找问题也只能这么找没什么好的方法
static void MX_GPIO_Init(void)
{
  GPIO_InitTypeDef GPIO_InitStruct = {0};

  /* GPIO Ports Clock Enable */

  __HAL_RCC_GPIOB_CLK_ENABLE();

  /*Configure GPIO pin : PB3 */
  GPIO_InitStruct.Pin = GPIO_PIN_3;
  GPIO_InitStruct.Mode = GPIO_MODE_IT_RISING_FALLING;
  GPIO_InitStruct.Pull = GPIO_PULLUP;
  HAL_GPIO_Init(GPIOB, &GPIO_InitStruct);

  /* EXTI interrupt init*/
  HAL_NVIC_SetPriority(EXTI2_3_IRQn, 0, 0);
  HAL_NVIC_EnableIRQ(EXTI2_3_IRQn);

}