One thread use up all the computer time,which use ADC.

[Linda]

Posted on October 07, 2014 at 16:46 I am adding a thread to STM32F429iDisco demo. This thread use ADC, it use all all the computer time, other thread do not response at all. I try to add code:  vTaskDelay(1000); or  GUI_X_Delay(1000) It still doesn't work. How to release some computer time to other thread/task? Please help. Thanks #!espn

[Linda]

Posted on October 08, 2014 at 20:34

I means it use all

microcontroller processing time

, other tasks can to response. Please help. thanks

[Tesla DeLorean]

Posted on October 08, 2014 at 21:03

Ok, but that sounds like a symptom, not the cause of the problem. Work on presenting exactly what you are doing significantly better.

[Linda]

Posted on October 09, 2014 at 17:06

Dear Clive1,

I couldn't get it, what do you mean? How to release some microcontrollor process time from one thread? Maybe the ADC have too high priority? how to lower it? thanks

[Tesla DeLorean]

Posted on October 09, 2014 at 18:49

I couldn't get it, what do you mean?

You are focusing on the wrong problem. Focus on what's causing the problem. I can't magically see what your problem is, present it with completeness and clarity. If you keep restating the same set of facts I will ignore you.

[Tesla DeLorean]

Posted on October 09, 2014 at 20:38

Maybe the ADC have too high priority?

Are you sampling at 5 Msps? Is that appropriate for your application? What would be appropriate? Do you use a interrupt to signal that new values are available?

[Linda]

Posted on October 11, 2014 at 04:44

I  use:

 sConfig.SamplingTime = ADC_SAMPLETIME_480CYCLES;

[Linda]

Posted on October 13, 2014 at 11:15

Use this one GUI_Delay(200); it finally works.