CubeMX之FreeRTOS学习day01

开发环境：CubeMX Version：5.6.1
Keil:Version:V5.31.0
FreeRTOS： V2.0参考API连接

1. 二值信号量的使用

功能：控制线程中按键按下，则控制释放信号量，显示线程中检测到信号量，数值++，显示数值

/* Definitions for NIXIE_TUBE */
osThreadId_t NIXIE_TUBEHandle;
const osThreadAttr_t NIXIE_TUBE_attributes = {
  .name = "NIXIE_TUBE",
  .priority = (osPriority_t) osPriorityLow,
  .stack_size = 128 * 4
};
/* Definitions for KEY_CONTROL */
osThreadId_t KEY_CONTROLHandle;
const osThreadAttr_t KEY_CONTROL_attributes = {
  .name = "KEY_CONTROL",
  .priority = (osPriority_t) osPriorityLow,
  .stack_size = 128 * 4
};


Key_PressedHandle = osSemaphoreNew(1, 1, &Key_Pressed_attributes);

/* USER CODE BEGIN Header_Nixie_Tube */
/**
* @brief Function implementing the NIXIE_TUBE thread.
* @param argument: Not used
* @retval None
*/
/* USER CODE END Header_Nixie_Tube */
void Nixie_Tube(void *argument)
{
  /* USER CODE BEGIN Nixie_Tube */
  /* Infinite loop */
  for(;;)
  {
		osSemaphoreAcquire (Key_PressedHandle, -1);
		TM1640_display(ADDRESS_TM1640_COM3,Nixie_Tube_Num/2);
		TM1640_display(ADDRESS_TM1640_COM7,Nixie_Tube_Num/2);
		Nixie_Tube_Num++;
		if(Nixie_Tube_Num>9)
			Nixie_Tube_Num=0;
//		LL_mDelay(1000);
//    osDelay(1);
  }
  /* USER CODE END Nixie_Tube */
}

/* Create the thread(s) */
  /* creation of defaultTask */
  defaultTaskHandle = osThreadNew(StartDefaultTask, NULL, &defaultTask_attributes);

  /* creation of NIXIE_TUBE */
  NIXIE_TUBEHandle = osThreadNew(Nixie_Tube, NULL, &NIXIE_TUBE_attributes);

  /* creation of KEY_CONTROL */
  KEY_CONTROLHandle = osThreadNew(Key_Control, NULL, &KEY_CONTROL_attributes);



/* USER CODE BEGIN Header_Key_Control */
/**
* @brief Function implementing the KEY_CONTROL thread.
* @param argument: Not used
* @retval None
*/
/* USER CODE END Header_Key_Control */
void Key_Control(void *argument)
{
  /* USER CODE BEGIN Key_Control */
  /* Infinite loop */
  for(;;)
  {
		EncodeKey=ctl_encoder_handler();
		if(EncodeKey != NULL)
		{
			printf("%d
",EncodeKey->KeyValue);
			osSemaphoreRelease (Key_PressedHandle);
		}
		
		PressKey=ctl_key_handler();
		if(PressKey->click)
		{
				printf("%d
",PressKey->KeyValue);
				PressKey->click = 0;
		}
    //osDelay(1);
  }
  /* USER CODE END Key_Control */
}

总结：

/*显示任务中请求信号量，信号量未释放，则任务处于阻塞状态*/
osSemaphoreAcquire (Key_PressedHandle, -1);
/*第一个参数为二值信号量的句柄，第二个参数，-1，则死等，直至对应的信号量释放，正数数值，例如1000，为时间片*1000时间后解除阻塞*/

/*控制任务中释放信号量，当有按键按下时，则释放信号量，显示任务中检测到信号量的释放，数值++，并显示*/
osSemaphoreRelease (Key_PressedHandle);
/*参数为对应信号量的句柄*/

2. 计数信号量的使用：

功能：控制线程中，按键按下一次，计数信号量++，显示线程中，获取信号量计数，当信号量计数==某个值，执行线程

/* Definitions for CS_PressTimes */
osSemaphoreId_t CS_PressTimesHandle;
const osSemaphoreAttr_t CS_PressTimes_attributes = {
  .name = "CS_PressTimes"
};

/* creation of CS_PressTimes */
  CS_PressTimesHandle = osSemaphoreNew(100, 1, &CS_PressTimes_attributes);


/* USER CODE BEGIN Header_Nixie_Tube */
/**
* @brief Function implementing the NIXIE_TUBE thread.
* @param argument: Not used
* @retval None
*/
/* USER CODE END Header_Nixie_Tube */
void Nixie_Tube(void *argument)
{
  /* USER CODE BEGIN Nixie_Tube */
  /* Infinite loop */
  for(;;)
  {
		//osSemaphoreAcquire (CS_PressTimesHandle, -1);
		if(osSemaphoreGetCount (CS_PressTimesHandle)%10 == 0)
		{
			TM1640_display(ADDRESS_TM1640_COM3,Nixie_Tube_Num/2);
			TM1640_display(ADDRESS_TM1640_COM7,Nixie_Tube_Num/2);
			Nixie_Tube_Num++;
			if(Nixie_Tube_Num>9)
				Nixie_Tube_Num=0;
		}
//		LL_mDelay(1000);
//    osDelay(1);
  }
  /* USER CODE END Nixie_Tube */
}

/* USER CODE BEGIN Header_Key_Control */
/**
* @brief Function implementing the KEY_CONTROL thread.
* @param argument: Not used
* @retval None
*/
/* USER CODE END Header_Key_Control */
void Key_Control(void *argument)
{
  /* USER CODE BEGIN Key_Control */
  /* Infinite loop */
  for(;;)
  {
		EncodeKey=ctl_encoder_handler();
		if(EncodeKey != NULL)
		{
			printf("%d
",EncodeKey->KeyValue);
			osSemaphoreRelease (CS_PressTimesHandle);
			printf("osSemaphoreGetCount (CS_PressTimesHandle):%d
",osSemaphoreGetCount (CS_PressTimesHandle));
		}
		
		PressKey=ctl_key_handler();
		if(PressKey->click)
		{
				printf("%d
",PressKey->KeyValue);
				PressKey->click = 0;
		}
    //osDelay(1);
  }
  /* USER CODE END Key_Control */
}

总结：

/*二值信号量其实就是特殊的计数信号量，计数信号量释放可设置，二值信号量释放只有0-1*/
CS_PressTimesHandle = osSemaphoreNew(100, 1, &CS_PressTimes_attributes);
//函数原型：osSemaphoreId_t osSemaphoreNew (uint32_t max_count, uint32_t initial_count, const osSemaphoreAttr_t *attr)
/*第一个参数：计数信号量最大计数到多少，第二个参数，计数信号量的初始值，*/
/*每释放一次信号量，信号量的计数在初始值的基础上+1，所以，CubeMX只初始化最大计数，用户自己修改初始值*/
/*通过osSemaphoreGetCount (CS_PressTimesHandle)获取信号量的计数值，当达到某个计数值的时候处理任务*/