why APP_TIMER_APPSH_INIT not working

[makouda]

i'm trying to blink led using timer, but nothing blink. I dont see the error in my code

#define APP_TIMER_PRESCALER             0                                           /**< Value of the RTC1 PRESCALER register. */
#define APP_TIMER_MAX_TIMERS            6                                           /**< Maximum number of simultaneously created timers. */
#define APP_TIMER_OP_QUEUE_SIZE         7                                           /**< Size of timer operation queues. */

#define SCHED_MAX_EVENT_DATA_SIZE       sizeof(app_timer_event_t)                 
#define SCHED_QUEUE_SIZE                10   
#define LED_BLINK_TIME							     APP_TIMER_TICKS(1000, APP_TIMER_PRESCALER)  
void led_blink_timer_handler(void * p_context) {
	    // blink code here
}


static void scheduler_init(void)
{
    APP_SCHED_INIT(SCHED_MAX_EVENT_DATA_SIZE, SCHED_QUEUE_SIZE);
}


static void timers_init(void)
{
    uint32_t err_code;  
    APP_TIMER_APPSH_INIT(APP_TIMER_PRESCALER, APP_TIMER_MAX_TIMERS, APP_TIMER_OP_QUEUE_SIZE, true);
    err_code = app_timer_create(&m_led_blink_timer_id, APP_TIMER_MODE_REPEATED, led_blink_timer_handler);
    APP_ERROR_CHECK(err_code);
}


static void timers_start(void)
{
    uint32_t err_code;
    err_code = app_timer_start(m_led_blink_timer_id, LED_BLINK_TIME, NULL);
    APP_ERROR_CHECK(err_code); 	
}


/**@brief Function for application main entry.
 */
int main(void)
{
  nrf_gpio_cfg_output(LED_GREEN);
		    	
	timers_init();
	nrf_gpio_pin_clear(LED_GREEN);
    
	scheduler_init();
    timers_start();

      while (1>0) {
			  app_sched_execute();
			}
	
	return 0;

[Einar Thorsrud]

It seems you have forgot to start the LFCLK. If you are not running the SoftDevice you will have to request it manually. One way of doing it is like this, using the clock driver:

uint32_t err_code = nrf_drv_clock_init(NULL);
APP_ERROR_CHECK(err_code);
nrf_drv_clock_lfclk_request();

You may be interested in the Application Timer and Scheduler Tutorial. Note that most application do not need the scheduler.

[makouda]

i add this, still not working, what do u mean by not using SoftDevice , do you mean not loading SoftDevice hex file with nrfgostudio at all????? for this, I load it

[Wojtek]

I think he meant enabling softdevice by sd_ble_enable.

[Einar Thorsrud]

Yes, that is what I ment. If you have enabled the SoftDevice (called sd_ble_enable()) or you use the codes snipped from my answer your code should work. However nothing will blink in your code, as your led_blink_timer_handler() has a empty implementation. I guess this is where you would want to blink your LED's?