Timer interrupt for 10 seconds

Please take a look at our pre-release driver
e2e.ti.com/.../474000

Try it and then post it when you encounter any difficulties using this driver.

Hi Christin,
Thanks. This is very useful. I have few more queries. I need to run the timer in the one shot mode. I configured that. I want to get timer interrupt after 10 seconds of timer starts. How to set this time(10 second) value?

Thanks,
Santhoj

Hi Christin,

Thanks, this is fine. GPTimerCC26XX_setLoadValue(480000000-1) will give trigger after 10seconds. For this 16-bit Timer is not enough. So we need to use 32-bit Timer. Am I Right?
timerParams.width = GPT_CONFIG_32BIT.

Regards,
Santhoj.

yes, you need to use 32 bit timer

Hi Christin,
For opening the 32 bit timer,
timerParams.width = GPT_CONFIG_32BIT;
GPTimerCC26XX_open(CC2650_GPTIMER0A, &timerParams);

Is these statement is fine? I left the TIMER0B untouched. This will be fine right?
Thanks,
Santhoj.

Yes. Once you stated to use 32BIT config, then you should not touch TimerB.

Hi,

I am able to load the timer and its giving interrupt after the timeout. Also I am able to reload the timer value after the timeout.

But I'm trying to load the timer before completing the previous load value. This is not working.

Timer Config: 32 bit timer. Timer1; Up counting One shot timer.

DIO_callback()

{

..

GPTimerCC26XX_stop(hTimer);

GPTimerCC26XX_setLoadValue(hTimer,480000000); /* 10sec */

GPTimerCC26XX_start(hTimer);

}

this callback ll occur again in less than 10 sec. Say for example, I got first DIO interrupt at 10:30:11 (HH:MM:SS) so I expect the timer interrupt should occur after the timeout that is at 10:30:21. But if another DIO interrupt occur at 10:30:15. then I expect the timer should give interrupt at 10:30:25. Instead it is giving timer interrupt at 10:30:21 itself.

Why I am experiencing this behaviour? timer stop function won't clear the old timing value and update the new value?

Suggest me how can I design the timer to my functionality.

Thanks,

Santhoj.

Why do you need to load the timer value before it reaches timeout?

I am not really following your thoughts here, can you post code snippet of what you trying to accomplish?