FreeRTOS (tasks) with Blue Pill using STM32CubeIDE

Prerequisites

This project assumes you have already installed STM32CubeIDE. You need to have previously done a basic blink sketch with blue-pill using STM32CubeIDE. I have made a complete video from installing STM32CubeIDE to LED blink program. You can watch it by clicking this link. https://www.youtube.com/watch?v=kXg467nVd_A

Wiring Diagram

STM32CubeIDE Settings

Click SYS → Timebase Source → Select any timers (TIM3)

Click RCC → High Speed Clock (HSE) to Crystal/Ceramic Resonator

Click Clock Configuration tab → HCLK (MHz) to 72

Click Pinout and Configuration tab

Click Middelware → Click FREERTOS → Select Interface to CMSIS_V1

Configuration → Advanced Settings → USE_NEWLIB_REENTRANT (Enabled)

Configuration → Tasks and Queues

Rename the DefaultTask to RedLED

Create two more tasks named GreenLED and BlueLED

Change Priority to osPriorityNormal for all tasks

Set PA2, PA3 and PA4 GPIO_Output

Additional code on top of STM32CubeIDE generated code

void StartRedLED(void const * argument)
{
  /* USER CODE BEGIN 5 */
  /* Infinite loop */
  for(;;)
  {
    HAL_GPIO_TogglePin(GPIOA, GPIO_PIN_2);
    osDelay(200);
  }
  /* USER CODE END 5 */
}

void StartGreenLED(void const * argument)
{
  /* USER CODE BEGIN StartGreenLED */
  /* Infinite loop */
  for(;;)
  {
    HAL_GPIO_TogglePin(GPIOA, GPIO_PIN_3);
    osDelay(300);
  }
  /* USER CODE END StartGreenLED */
}

void StartBlueLED(void const * argument)
{
  /* USER CODE BEGIN StartBlueLED */
  /* Infinite loop */
  for(;;)
  {
    HAL_GPIO_TogglePin(GPIOA, GPIO_PIN_4);
    osDelay(700);
  }
  /* USER CODE END StartBlueLED */
}