Hello all the community can you help me on the code that will give me access to vary the value of the pulse using a variable on the debugger thanks. For info the application is a PWM command with duty cycle

[abodi.1]

..

[waclawek.jan]

TIM1->CCR2 = value;

JW

[abodi.1]

@waclawek.jan
 
Thanks for your answer but with TIM1->CCR2 = value; I can't vary the duty cycle directly on the debbogger. I always have to stop the program and change the value in the pluse and recompile again. 

[Pavel A.]

Do this in your SysTick_Handler

/* Change this with the debugger: */
volatile uint32_t g_value = ..... ;
 
void SysTick_Handler(void)
{
 HAL_IncTick();
 /* USER CODE BEGIN SysTick_IRQn 1 */
 TIM1->CCR = g_value;
 /* USER CODE END SysTick_IRQn 1 */
}

[abodi.1]

@Pavel A.​ I copied and pasted it on my program but it generated errors 

../Core/Src/main.c:109:6 : warning : 'SysTick_Handler' défini mais non utilisé [-Wunused-function]

 109 | void SysTick_Handler(void)

[waclawek.jan]

Well, in debugger, you don't need any code. Just write directly to TIM1->CCR2 in the peripheral registers view.

JW

[abodi.1]

I have to write it on my main code the wile loop

 while (1)

 {

  /* USER CODE END WHILE */

TIM1->CCR2=250;

  /* USER CODE BEGIN 3 */

 }

[Tesla DeLorean]

That's probably unnecessarily frequent.

Perhaps hold in a variable and check if it changes.

Ideally if the board has access to a USART or serial data you could make something interactive rather than stopping in the debugger.

Or if the board has a potentiometer you could read an angle from that using an ADC channel.​