Using app_timer callback

RE: Using app_timer callback

bg2bkk — Sat, 18 Oct 2014 06:26:10 GMT

thank you, it can be applied on my project directly. I have no other configurations.

RE: Using app_timer callback

Andrei — Wed, 06 Nov 2013 18:52:00 GMT

Thanks alot. Programmed it and of course it worked. Then after alot of digging around I found out that I commented RTC1_IRQHandler out of app_timer.c in another test. Lesson learned, don't modify the sdk base files :)

RE: Using app_timer callback

cocoa — Wed, 06 Nov 2013 17:36:10 GMT

Compiled on Mac OS X, gcc-arm-none-eabi-4_7-2013q3, softdevice 5.2.1.

Attached the compiled program. Two formats, bin and hex file . Try and tell me.

-c

build.rar

RE: Using app_timer callback

Andrei — Wed, 06 Nov 2013 16:50:32 GMT

Hello, Thanks for the answer, I've tried using the example you provided but it still doesn't work. When used in debug with eclipse it crashes at BLE_STACK_HANDLER_INIT with error 8194 which I checked and seems to be NRF_ERROR_SOFTDEVICE_NOT_ENABLED. When I tried it without the debugger the LED0 lights up when entering main but still doesn't blink afterwards (neither does LED1).

I'm using nrf51822 EK with eclipse, softdevice firmware 5.2.1. Have you used another configuration for the tests or maybe there is a compilation problem?

Andrei

RE: Using app_timer callback

cocoa — Wed, 06 Nov 2013 14:39:50 GMT

This code is tested on EK board with soft device, the callback from timer is called every 500 ms.



#define LED0	 18
#define LED1	 19
#define BTN0	 16
#define BTN1	 17

#define PRESCALER				0
#define MAX_TIMERS			1
#define OP_QUEUES_SIZE	4
#define USE_SCHEDULER		false

#define TIMER_MS				500
#define TIMER_TICKS			APP_TIMER_TICKS(TIMER_MS, PRESCALER)



// alloc timer object

static app_timer_id_t			 testTimer;



static void powerManager(void)
{
	 uint32_t error_code;
	 error_code = sd_app_event_wait();
	 APP_ERROR_CHECK(error_code);
}

// Timer callback
static void timerDidEnd(void *nil)
{
	 // blink to say Hello!!
	 nrf_gpio_pin_toggle(LED0);
	 nrf_gpio_pin_toggle(LED1);
}


static void bleEventManager(ble_evt_t *stackEvent)
{
	 // stack event received
	 // do nothing
	 switch (stackEvent->header.evt_id)
	{
		 default:
			break;
	}
}


int main (void)
{
	 uint32_t errorCode;
	 
	 // I'm alive, led0 on
	 GPIO_LED_CONFIG(LED0);
	 GPIO_LED_CONFIG(LED1);
	 nrf_gpio_pin_set(LED0);
	 
	 
	 // stack init
	 BLE_STACK_HANDLER_INIT(NRF_CLOCK_LFCLKSRC_XTAL_20_PPM,
													BLE_L2CAP_MTU_DEF,
													bleEventManager,
													false);

	 // init timer module
	 APP_TIMER_INIT(PRESCALER, MAX_TIMERS, OP_QUEUES_SIZE, USE_SCHEDULER);
	 
	 // create a timer
	 errorCode = app_timer_create(&testTimer,
																 APP_TIMER_MODE_REPEATED,
																 timerDidEnd);
	 
	 APP_ERROR_CHECK(errorCode);
	 
	 // timer starts,
	 errorCode = app_timer_start(testTimer,
																TIMER_TICKS,
																NULL);
	 APP_ERROR_CHECK(errorCode);
	 
	 
	 for(;;)
		 {
			 powerManager();
	   }
	 
	 
}

-c