App Timer does not trigger his handle function

[Christos.Bou]

Hi,

I'm trying to implement a timer that will trigger each 10ms (for example) an handler function and do something inside it. So, I came with the idea to implement an App Timer as follow :

#define OSCILLATION_INTERVAL APP_TIMER_TICKS(10)
  
APP_TIMER_DEF(m_app_timer_id);

static void app_timer_handler(void *p_context)
{
  NRF_LOG_INFO("YES");
}

static void timer_init(void)
{
    ret_code_t err_code;

    err_code = app_timer_create(&m_app_timer_id, APP_TIMER_MODE_REPEATED, app_timer_handler);
    APP_ERROR_CHECK(err_code);
}

static void idle_state_handle(void)
{
    if (NRF_LOG_PROCESS() == false)
    {
        nrf_pwr_mgmt_run();
    }
}

int main(void)
{
    bool erase_bonds;
    ret_code_t err_code;
    
    // Initialize.
    log_init();
    app_timer_init();
    NRF_LOG_INFO("START");
    timer_init();
    // Enter main loop. 
    err_code = app_timer_start(m_app_timer_id, OSCILLATION_INTERVAL, NULL);
    APP_ERROR_CHECK(err_code);
    for (;;)
    {   
        idle_state_handle();
    }
}

My issue is that I don't read the "Yes" charachter in the debug terminal, so I guees that my timer is not working correctly.
I tried to find the solution, but didn't find where my error is...

Thanks for helping !

Chris

[Christos.Bou]

Hello,

I'm using the RTT terminal because when I run the code, the debug terminal show me this : 

I just don't get the "Yes" from the timer handler on the terminal and I don't get why...

And no, when I debug, the code seems to work as expected in an infinite loop.

[Karl Ylvisaker]

Hello,

Christos.Bou said:

I'm using the RTT terminal because when I run the code, the debug terminal show me this : 

Thank you for clarifying.

It seems I glanced over the code too quickly yesterday. Please add the app_timer_init to your timer_init function, and see if this resolves the issue.

For future reference, please also add the DEBUG define to your preprocessor defines like shown in the included image:

This will make your logger output a detailed error message whenever a non-NRF_SUCCESS error code is passed to an APP_ERROR_CHECK.

Best regards,
Karl

[Christos.Bou]

Thanks for your advice about the DEBUG !

Unfortunally, adding the app_timer_init into my timer_init function didn't change anything...

Is there anything else that I could try to find the bug ?