app_timer SDK 15 + S132 SoftDevice v6.0.0 nRF52832

[Humberto Matias Cosentini]

Hi everyone.  I'm starting from scratch and using as reference the example/ble_peripheral/ble_app_template.

I'm using Embedded Studio 3.50 + Jlink V6.32 / The chip is nRF52832-QFAA / The SDK15.0.0  + S132 SoftDevice v6.0.0 

I designed a custom board, I defined the new board, as you can see in the PREPROCESSOR DEFINITIONS. (I used the example definition as reference)

I quite new using softdevice.

When I tried to start the timer, it couldn't.

Then I found a lot of threads in the forum explaining that you must request the low-frequency clock ( if you don't use the soft-device).

But I'm using the softdevice, and It seems that is not requesting the LFCLK.

Then I found this post https://devzone.nordicsemi.com/f/nordic-q-a/31982/can-t-make-app_timer-work  I added the lines and now the timer is working.

But I'm a little concerned because of the softdevice is not requesting LFCK automatically, and maybe I missed to set something in the sdk_config.h or maybe I'm not compiling a library/driver etc.

I read the documentation and I can't find a list of dependencies or required libraries/drivers to compile with.

Here are how I'm creating the timer and the handlers 

//-------------------------------------------------------------------------------------------------------------------------------TIMERS 
//-----------------------------------------------------------------------------------------------------------------------HANDDLERS
static void blink_timeout_handler(void * p_context)
{
  BLINK_STATE=!BLINK_STATE;
  if (BLINK_STATE)
  {
  NRF_LOG_INFO("Blink handler");
  NRF_LOG_FLUSH();
  }
}

//-----------------------------------------------------------------------------------------------------------------------TIMER INIT
/**@brief Function for the Timer initialization.
 *
 * @details Initializes the timer module. This creates and starts application timers.
 */
static void timers_init(void)
{
    NRF_CLOCK->TASKS_LFCLKSTART = 1;
    while (NRF_CLOCK->EVENTS_LFCLKSTARTED == 0);


    // Initialize timer module.
    ret_code_t err_code = app_timer_init();
    APP_ERROR_CHECK(err_code);
    if (err_code == NRF_SUCCESS) 
      {
      NRF_LOG_INFO("Timer Init");
      NRF_LOG_FLUSH();
      }
    // Create timers.

    /* YOUR_JOB: Create any timers to be used by the application.
                 Below is an example of how to create a timer.
                 For every new timer needed, increase the value of the macro APP_TIMER_MAX_TIMERS by
                 one.
       ret_code_t err_code;
       err_code = app_timer_create(&m_app_timer_id, APP_TIMER_MODE_REPEATED, timer_timeout_handler);
       APP_ERROR_CHECK(err_code); */
    //----Blink timer
      
      err_code = app_timer_create(&blink_timer, APP_TIMER_MODE_REPEATED, blink_timeout_handler);
      APP_ERROR_CHECK(err_code); 

      if (err_code == NRF_SUCCESS) 
      {
      NRF_LOG_INFO("Timer create");
      NRF_LOG_FLUSH();
      }
}

the main entry

void main(void) {
  
//-----------------------------------------------Initialize device.
    
   
      log_init();
      timers_init();
      
      INHALER_led_RGB_init(PIN_LED_R, PIN_LED_G, PIN_LED_B);
      gpio_init(); 

      NRF_LOG_INFO("Device Initialized");
      NRF_LOG_FLUSH();
      if (app_timer_start(blink_timer,BLINK_tick,NULL) == NRF_SUCCESS) 
      {
      NRF_LOG_INFO("Timer Init");
      NRF_LOG_FLUSH();
      }

//-----------------------------------------------Enter Main loop.

  for (;;)
          {
          CHARGING_UPDATE();
          LED_UPDATE();
          }
}

the Preprocessor definitions, 

all the files compiled 

and the sdk_config file.

sdk_config.h

Thanks for your help!!!

 

[Einar Thorsrud]

Hi,

The SoftDevice will start the LFCLK when it is enabled, but I do not see you enabling the SoftDevice in your main function. If you don't enable it, then you are effectively not using the SoftDevice even if you have programmed it to the flash.

[Humberto Matias Cosentini]

Thanks!!! Yes, I forgot to enable the softdevice!!!

I added the following lines and now the softdevice request the LFCLK and app_timer is running!!!

 ret_code_t err_code;

      err_code = nrf_sdh_enable_request();
      APP_ERROR_CHECK(err_code);