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Quaeritur: Quem modum operandi faciunt timor obloquitur et clavis obloquitur, suntne suffragium?

Quomodo ad effectum deducendi specifice

Timer adjicias (judicium) temporis clavis parametri adjicias (modificationem)

Interpellare vector mensam .s file

        DCD     SysTick_Handler            ; SysTick Handler

Timer related file adjicias
stm32f1xx_it.c

void SysTick_Handler(void)
{
 
  HAL_IncTick();//增加计数值，
 
  extern void check_timer(void);
  check_timer();
 
}

stm32f1xxx_hal.c

__weak void HAL_IncTick(void)
{
  uwTick += uwTickFreq;
}
 
__weak uint32_t HAL_GetTick(void)
{
  return uwTick;
}

main.c

Manus tempus et horologium

pTimer structureMunus continens tempus et processum computat valores

in systemahorologium pertractatio munusMunus perscriptio horologii adde, et si enuntiatio in check_timer limitat monstratorem tempus minus esse quam vel aequale ad tempus horologii.

Si intermittitur, transeatInterpellare callback munusAdde 10ms tempori tuo monstratori;Quod si per hoc tempus alia interruptio fiat, tempus punctum 10 augebitur.

Cum nulla intermissio fiat vel intermissio intra (n*10) ms fiat, condiciones ingrediendi si corpus functionis in check_timer non occurrit;

Ingredere si munus corporis donec nulla jitter.Munera voca in structura per munus timoris et functionis check_timer,facerenumerare valoremAugere

struct soft_timer {
	uint32_t timeout;
	void * args;
	void (*func)(void *);
};
 
int g_key_cnt = 0;
 
void key_timeout_func(void *args);
struct soft_timer key_timer = {~0, NULL, key_timeout_func};
void key_timeout_func(void *args)
{
	g_key_cnt++;
	key_timer.timeout = ~0;
}
 
void mod_timer(struct soft_timer *pTimer, uint32_t timeout)
{
	pTimer->timeout = HAL_GetTick() + timeout;
}
 
void check_timer(void)
{
	if (key_timer.timeout <= HAL_GetTick())
	{
		key_timer.func(key_timer.args);
	}
}
 
、、数据处理的源头，发生中断
void HAL_GPIO_EXTI_Callback(uint16_t GPIO_Pin)
{
	if (GPIO_Pin == GPIO_PIN_14)
	{		
		mod_timer(&key_timer, 10);
	}
}

int main(){
    OLED_Init();	 
	OLED_Clear();   
  OLED_PrintString(0, 4, "Key ISR cnt = ");
  while (1)
  {
	  OLED_PrintSignedVal(0, 6, g_key_cnt);
 
  }
 
}

stm32f1xx_it.c

DCD EXTI15_10_IRQHandler ; EXTI Line 15..10

void EXTI15_10_IRQHandler(void)
{
  /* USER CODE BEGIN EXTI15_10_IRQn 0 */
 
  /* USER CODE END EXTI15_10_IRQn 0 */
  HAL_GPIO_EXTI_IRQHandler(GPIO_PIN_14);
  /* USER CODE BEGIN EXTI15_10_IRQn 1 */
 
  /* USER CODE END EXTI15_10_IRQn 1 */
}

stm32f1xxx_hal_gpio.c 

Source of MGE, intermissio occurs

void HAL_GPIO_EXTI_IRQHandler(uint16_t GPIO_Pin)
{
  /* EXTI line interrupt detected */
  if (__HAL_GPIO_EXTI_GET_IT(GPIO_Pin) != 0x00u)
  {
    __HAL_GPIO_EXTI_CLEAR_IT(GPIO_Pin);
    HAL_GPIO_EXTI_Callback(GPIO_Pin);
  }
}