topic Re: Reseting timer interrupt by disabling and enabling. in Kinetis Microcontrollers

Reseting timer interrupt by disabling and enabling.

kaustubhkagalka — Wed, 22 Jun 2016 21:21:01 GMT

Hi,

I am working on MK24FN1M0VDC12 MCU, and using Timer Interrupt for 8ms periodic interrupt. I need to sync this interrupt with an external trigger. I read from the K24 Sub-Family Reference Manual pg no 1050, that, to reset the timer, enabling and disabling the interrupt is required. I am using following function calls as follows.

if (TI1_Disable() != ERR_OK) {

static int err1 = 0;

err1++;

}

if (TI1_Enable() != ERR_OK) {

static int err = 0;

err++;

}

When these lines are executed the interrupt is completely disabled, and I never the periodic interrupt after that.

Re: Reseting timer interrupt by disabling and enabling.

jeremyzhou — Thu, 23 Jun 2016 02:57:58 GMT

Hi Kaustubh Kagalkar,

Do you mean that the PIT periodic interrupt would become disable after disable and reable operation? And I was wonder if you can share the whole the demo.
Have a great day,
Ping

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Re: Reseting timer interrupt by disabling and enabling.

kaustubhkagalka — Thu, 23 Jun 2016 17:50:45 GMT

Hi,

I want to reset the timer count, but periodic interrupt would be permanently disabled after calling TI1_Disable(), even after using TI1_Enable() after that.

So for ex. if a periodic 8ms interrupt is scheduled to come at 8ms,16ms ,24 ms and so on. At time 27ms I wish to reset the timer so the next interrupt comes at (27+ 8 ) 35 ms.

I am sharing the project here, most of the logic is in the file Task1.c.

Also, I am trying to find a way to share my project or send you a zipped folder but I cant find a way to do that.

Kaustubh

Re: Reseting timer interrupt by disabling and enabling.

kaustubhkagalka — Thu, 23 Jun 2016 18:04:22 GMT

Please ignore this sentence

"I am sharing the project here, most of the logic is in the file Task1.c." in the last comment. :smileyhappy:

Re: Reseting timer interrupt by disabling and enabling.

kaustubhkagalka — Thu, 23 Jun 2016 20:41:50 GMT

Sorry to be hasteful, I found a code in my bug, I was perpetually resetting the interrupt timer, and hence was not receiving the interrupt. Disabling and enabling the timer component works fine.

Thanks for your support.