Simple timer as counter

[oskarbjo]

Hello,

I want to use app_simple_timer as a counter - I am trying to access the current number of ticks at regular intervals, something in the style of what was suggested here (see also pasted code below).

Is there a straightforward way of doing this with the simple timer or should I try to implement it manually through nrf_drv_timer?

Thank you

 

uint32_t   current_counter = 0;
 NRF_TIMER1->TASKS_CAPTURE[2] = 1;  // This is asking to capture the current counter into CC[2]
current_counter = NRF_TIMER1->CC[2];   // counter value  at the instant when capture task was triggered is now ready to be read in CC[2]

[Jimmywong2003]

Hi,

You can refer to my github to get the timer tick.

uint32_t counter_get(void)
{
    return(nrf_drv_rtc_counter_get(&m_rtc));
}

https://github.com/jimmywong2003/nrf5-ble-bidirection-throughput-test/blob/master/module/counter.c

[oskarbjo]

Hi,

Thanks a lot for the suggestion but it seems that you are using the RTC and the 32kHz clock while I am trying to use the 32MHz clock.

My application could perhaps do with the 32 kHz instead, but I am using an NRF52820 which only has two RTCs and both of these are already in use unfortunately

[Karl Ylvisaker]

Hello Oskar,

If you would like to capture the value of a TIMER instance you could use the nrfx_timer_capture or nrfx_timer_capture_get functions to do so.
Make sure you are not using TIMER0 or RTC0 since these peripherals are blocked by the SoftDevice (if present).

Best regards,
Karl