CubeMX - STM32 encoder interface

Couple a days ago, I've got struck with connection of encoder to my stm32 board. But,    the answer to the puzzle was quite simple:) So, just watch on screenshots:
Pin configuration:





Timer configuration:



Wiring is quite simple - encoder has 3 outputs. Central connect to GND, others - connect to timer's inputs.

Code is simple too:)
 int main(void)  
 {  
  /* USER CODE BEGIN 1 */  
  /* USER CODE END 1 */  
  /* MCU Configuration----------------------------------------------------------*/  
  /* Reset of all peripherals, Initializes the Flash interface and the Systick. */  
  HAL_Init();  
  /* Configure the system clock */  
  SystemClock_Config();  
  /* Initialize all configured peripherals */  
  MX_GPIO_Init();  
  MX_TIM1_Init();  
  /* USER CODE BEGIN 2 */  
  HAL_TIM_Encoder_Start(&htim1,TIM_CHANNEL_ALL);  
  /* USER CODE END 2 */  
  /* Infinite loop */  
  /* USER CODE BEGIN WHILE */  
  int i = 0;  
  while (1)  
  {  
  /* USER CODE END WHILE */  
  /* USER CODE BEGIN 3 */  
   i = TIM1->CNT;  
  }  
  /* USER CODE END 3 */  
 } 

So, you just need to enable encoder through function HAL_TIM_Encoder_Start.

Comments

  1. CandanJanuary 10, 2016 at 9:34 AM

    Very nice explanation, thanks for the contribution.

    ReplyDelete
  2. UnknownDecember 4, 2016 at 1:08 PM

    Thanks man, saved me some time!

    ReplyDelete
  3. AnonymousDecember 14, 2016 at 11:10 AM

    Thanks..

    ReplyDelete
  4. No LostDecember 20, 2016 at 10:05 PM

    thank you very much, just wondering this for a long time

    ReplyDelete
  5. TomMay 9, 2019 at 12:07 PM

    Thank you.

    ReplyDelete
  6. Stephen DevaneOctober 1, 2019 at 1:20 PM

    Can thuis be used to count motor quadrature pulses?

    ReplyDelete
    Replies
    1. Artyom SinitsinOctober 2, 2019 at 12:39 AM

      This approach can be used for any incremental encoder interface.

      Delete
  7. karlosMarch 23, 2020 at 5:13 AM

    thanks for your fine explanation, I was reading HAL manual, but have not figured how to start the timer with it

    ReplyDelete
  8. UnknownMay 27, 2020 at 3:21 PM

    Thank you for saving me a bunch of time !

    ReplyDelete
  9. UnknownMarch 21, 2022 at 6:08 AM

    but you arent using i in the code?

    ReplyDelete

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