STM32wb55 HAL_Delay() Function

[AKetc]

Hi everyone,

I have been stuck at a problem. I have been trying to configure HAL_Delay function to work in STM32 BLE_Server example in the STM32WB SDK. However, for some reason, the code gets stuck inside the HAL_Delay() Function. I have searched over the internet and tried the solution to increase Systick interrupt priority. Still there's no solution to my problem. Please help me out.

[Christophe Arnal · Accepted solution]

​Hello,

In all BLE Applications, the HAL_Delay() was not used so in order to save power ( avoiding the systick periodic interrupt timer), it was decided to disable the systick.

As long as the systick is not enabled, the HAL_Delay() cannot exit anymore.

In main.c, the two following weak functions have been overloaded with empty function

This prevents the HAL to enable the systick.

/**
 * This function is empty to avoid starting the SysTick Timer
 */
HAL_StatusTypeDef HAL_InitTick( uint32_t TickPriority )
{
	return (HAL_OK);
}
 
/**
 * This function is empty as the SysTick Timer is not used
 */
void HAL_Delay(__IO uint32_t Delay)
{
	return;
}

In order to get back the systick, you need to remove these two implementations from main.c

In the next release v1.3.0, the HAL_Delay() will be available by default as the lost of power consumption is marginal versus the fact it is a friendly service to be used in the appplication

Regards.

[dungeonlords789]

Stm32WB55CC with 1.8.0 pack has got the same problem. Systick is frozen. But solution from @Christophe Arnal​ not working... Also if I select Timebase Sourse = TIM1, program breaks somewhere in HAL_Init();

[Christophe Arnal]

​Hello,

The original problem was that HAL_Delay()  was implemented empty in our earlier packages. Now, there is an implementation of HAL_Delay() in main.c which is slightly different compare to the default one from the HAL.

In which BLE example provided in v1.8.0 Cube Package did you notice the HAL_Delay() is not working as expected ?

Regards.

[dungeonlords789]

STM32CubeIDE 1.4.2 with 1.8.0 pack.

I generate new project for WB55CC in CubeIDE and try to do blink led:

I go to debug and do first step

I try to do second step, but prog going away.

 

This was "TIM1 problem". Next is about "Systick problem".

I select Timebase Sourse = SysTick, generate code. Debugger do all steps before while(1).

while (1)

 {

   /* USER CODE END WHILE */

   /* USER CODE BEGIN 3 */

       HAL_GPIO_TogglePin(Buz_GPIO_Port, Buz_Pin);

       HAL_Delay(200);

 }

But after HAL_Delay(200) prog is infinity wating. I pause via debugger and I can see

Look at attachment.

[Christophe Arnal]

​Hello,

I added the STM32CubeMX stamp as I believe the problem is not linked to either BLE or STM32WB but more on the way STM32CubeMX has generated the application.

From the time being, I would recommend to have a look to \Projects\P-NUCLEO-WB55.Nucleo\Examples\HAL\HAL_TimeBase_TIM which provide an .ioc with TIM17 used to generate the tick for HAL_Delay().

Regards.

[dungeonlords789]

This was power supply problems on my pcb. And BOR_LEV was default (off).

Now I test stm32wb55CC with all timbase sources: systick, TIM1, TIM2, TIM16, TIM17 on pack 1.9.0 and it is works.

Sorry for my disturb @Christophe Arnal​ 

[Christophe Arnal]

​Hello,

Great to read you were able to fix that issue.

Regards.

[dungeonlords789]

I got systick problem! I use all timers and:

void SysTick_Handler(void)

{

 /* USER CODE BEGIN SysTick_IRQn 0 */

 /* USER CODE END SysTick_IRQn 0 */

CubeMX forgot HAL_IncTick();

 /* USER CODE BEGIN SysTick_IRQn 1 */

 /* USER CODE END SysTick_IRQn 1 */

}

The joke is that in project "CC_testSystick" 1.5MB above no this problem. I think this is because in proj above I use only one timer at one time.

Pack v 1.10.1

[dungeonlords789]

any news? @Imen Ezzine​ @Christophe Arnal​ 

[T J]

I Found the same issue again where systick fails to start;

Fixed by selecting a different toolchain.

Using the cube, under Code Generator,
output format GPDSC Toolchain --- failed
But using MDK Toolchain. ----- worked

Using H7

TJ.