[应用相关] 基于STM32CubeIDE搭建开发环境 --- 解决延时不准问题

#define LED0_Pin        GPIO_PIN_8

#define LED0_GPIO_Port  GPIOA

#define LED1_Pin        GPIO_PIN_2

#define LED1_GPIO_Port  GPIOD



/**

 * [url=home.php?mod=space&uid=247401]@brief[/url]  The application entry point.

 * @retval int

 */

int main(void)

{

    HAL_Init();

    SystemClock_Config();

    MX_GPIO_Init();

    led_init();



    while (1)

    {

        HAL_GPIO_WritePin(LED0_GPIO_Port, LED0_Pin, LED_ON);

        HAL_GPIO_WritePin(LED1_GPIO_Port, LED1_Pin, LED_ON);

        HAL_Delay(200);

        HAL_GPIO_WritePin(LED0_GPIO_Port, LED0_Pin, LED_OFF);

        HAL_GPIO_WritePin(LED1_GPIO_Port, LED1_Pin, LED_OFF);

        HAL_Delay(200);

    }

}

Paul@DESKTOP-PUB20JQ MINGW64 /f/Workspaces/stm32/A1 (master)

$ git diff

diff --git a/MAZ_Applications/system_stm32f1xx.c b/MAZ_Applications/system_stm32f1xx.c

index 7cacb32..40f4488 100644

--- a/MAZ_Applications/system_stm32f1xx.c

+++ b/MAZ_Applications/system_stm32f1xx.c

@@ -120,7 +120,7 @@

                is no need to call the 2 first functions listed above, since SystemCoreClock

                variable is updated automatically.

   */

-uint32_t SystemCoreClock = 16000000;

+uint32_t SystemCoreClock = 8000000;

 const uint8_t AHBPrescTable[16U] = {0, 0, 0, 0, 0, 0, 0, 0, 1, 2, 3, 4, 6, 7, 8, 9};

 const uint8_t APBPrescTable[8U] =  {0, 0, 0, 0, 1, 2, 3, 4};

__weak void HAL_Delay(uint32_t Delay)

{

  uint32_t tickstart = HAL_GetTick();

  uint32_t wait = Delay;



  /* Add a freq to guarantee minimum wait */

  if (wait < HAL_MAX_DELAY) 

  {

    wait += (uint32_t)(uwTickFreq);               // 强制加1

  }



  while ((HAL_GetTick() - tickstart) < wait)

  {

  }

}

Paul@DESKTOP-PUB20JQ MINGW64 /f/Workspaces/stm32/A1 (master)

$ git diff

diff --git a/MAZ_Vendors/ST/STM32F1xx_HAL_Driver/Inc/stm32f1xx_hal_def.h b/MAZ_Vendors/ST/STM32F1xx_HAL_Driver/Inc/stm32f1xx_hal_def.h

index c287eb3..c8630f8 100644

--- a/MAZ_Vendors/ST/STM32F1xx_HAL_Driver/Inc/stm32f1xx_hal_def.h

+++ b/MAZ_Vendors/ST/STM32F1xx_HAL_Driver/Inc/stm32f1xx_hal_def.h

@@ -57,6 +57,7 @@ typedef enum



 /* Exported macro ------------------------------------------------------------*/

 #define HAL_MAX_DELAY      0xFFFFFFFFU

+#define HAL_NO_DELAY       0x0



 #define HAL_IS_BIT_SET(REG, BIT)         (((REG) & (BIT)) != 0U)

 #define HAL_IS_BIT_CLR(REG, BIT)         (((REG) & (BIT)) == 0U)

diff --git a/MAZ_Vendors/ST/STM32F1xx_HAL_Driver/Src/stm32f1xx_hal.c b/MAZ_Vendors/ST/STM32F1xx_HAL_Driver/Src/stm32f1xx_hal.c

index 252f973..aa3f5c5 100644

--- a/MAZ_Vendors/ST/STM32F1xx_HAL_Driver/Src/stm32f1xx_hal.c

+++ b/MAZ_Vendors/ST/STM32F1xx_HAL_Driver/Src/stm32f1xx_hal.c

@@ -363,7 +363,8 @@ __weak void HAL_Delay(uint32_t Delay)

   uint32_t wait = Delay;



   /* Add a freq to guarantee minimum wait */

-  if (wait < HAL_MAX_DELAY)

+//  if (wait < HAL_MAX_DELAY)

+  if (wait == HAL_NO_DELAY)

   {

     wait += (uint32_t)(uwTickFreq);

   }