Timer Call back question ?

[antonius]

Dear Members,

I have a callback :

void Timer10_Callback()
{	
	
	 seconds += 1;
 
	 if (seconds == 30)
	 {
		 minute = 1;
		 seconds = 0;
 		
 		rpm=count;
 		
		 rps=(float)rpm/30;
 count=0;
	 }
}

and main() inside while()

current_rps = rps;	 
		if (minute>=1) 
		{
			printf("============\r\n");
			printf("RPS = %f\r\n",current_rps);
			bpm = current_rps*60;
			printf("RPM = %f\r\n",rpm);
			printf("============\r\n");
			//HAL_Delay(2000);
			minute = 0;
		}	

can I put my code inside while() into my callback, or it's too long because of printf ?

because the handler already here:

void TIM10_IRQHandler(void)
{
 /* USER CODE BEGIN TIM10_IRQn 0 */
 
 /* USER CODE END TIM10_IRQn 0 */
 HAL_TIM_IRQHandler(&htim10);
 /* USER CODE BEGIN TIM10_IRQn 1 */
 Timer10_Callback();
 /* USER CODE END TIM10_IRQn 1 */
}

and I want to print out the result when it's finished calculating, it's only printing it when the loop is rotating on that point....

Any clues ?

Thanks

[David Ledger]

Firstly just for clarity, why are you counting minutes with only 30 seconds, not 60 seconds?

I believe rpm is half what it should be, but rps appears correct.

Putting that code into the callback would likely be fine because your timer only triggers once a second and printf would very likely outpace it. The flags are likely cleared by the HAL_TIM_IRQHandler, although thats worth checking and because they are cleared before your callback it shouldn't change the timing.

I don't understand what you meant by "it's only printing it when the loop is rotating on that point...."

[antonius]

I don't understand what you meant by "it's only printing it when the loop is rotating on that point...."

.....

on main()

 while (1)
	{
		current_rps = rps;	 
		if (minute>=1) 
		{
			printf("============\r\n");
			printf("RPS = %f\r\n",current_rps);
			rm = current_rps*60;
			printf("RPM = %f\r\n",bpm);
			printf("============\r\n");
			//HAL_Delay(2000);
			minute = 0;
		}	
 
.
.
.
.
}

I want it running while it's doing something else on the while() loop....

Thanks