Microsecond delay for STM32G030F6P6TR

[sandeep3]

Hello I am trying to work with Microseconds delay in my code

so follow this very help full post on web POST

and I configure TIMER 3 ( I have also check with all available timer )

But unfortunately, it doesn't work for my STM32GO3O MCU

/* USER CODE BEGIN 0 */
void delay(uint16_t delay)
{
__HAL_TIM_SET_COUNTER (&htim3,0);
while (__HAL_TIM_GET_COUNTER(&htim3)<delay);
}
/* USER CODE END 0 */

while (1)

  {

    /* USER CODE END WHILE */

    /* USER CODE BEGIN 3 */

  HAL_GPIO_TogglePin(GPIOA, GPIO_PIN_6);

  delay(50);

  }

I don't have any external crystal oscillator attached ..

I used pin PA6 to debug the pulse output on the oscilloscope. but PA6 not changing the state.

please help how can I able to work with microseconds delay in STM32G030

[Tesla DeLorean]

Can you see TIM3 CNT cycling thru 0x0000 .. 0xFFFF in the debugger peripheral view?

For 64 MHz and 1us ticks set Prescaler to 64-1

I'd delta the count rather than zero the count,  as that would be thread/interrupt safe.

[TDK]

Did you start the timer?

[sandeep3]

I think I miss as I am new to stm32 please guide how to start the timer. 

[sandeep3]

no increment observed int the counter.

[STTwo-32 · Accepted solution]

Hello @sandeep3 

You need to add HAL_TIM_Base_Start(&htim3) to the main loop after the initialisation of all peripherals.

Best Regards

STTwo-32