wrong time interval about timer2

Question

HELP ME! THX!! Using the NRF51822, S110.V6.0, When I use the timer2 , want 3s timer of uart-sending words in BLE, but the result is not the same of the UART-ASSISSTANCE's show. it's always 1s, however I change the time I want. the code is next.

app_timer_id_t m_packet_timeout_timer_id;

static void packet_timeout_handler(void);

static void packet_timeout_timer_init(void);

static void packet_timeout_timer_reset(void);

static void packet_timeout_timer_start(void);

static void packet_timeout_timer_stop(void);

#define TIMER_PRESCALER 9
#define TIMEOUT_TICKS 7000
void TIMER2_IRQHandler(void)

{ if((NRF_TIMER2->EVENTS_COMPARE[0]!=0)&&(NRF_TIMER2->INTENSET&TIMER_INTENSET_COMPARE0_Msk)!=0)

{
	NRF_TIMER2->EVENTS_COMPARE[0] = 0;
	packet_timeout_handler(); 
}
  if((NRF_TIMER2->EVENTS_COMPARE[1]!=0)&&(NRF_TIMER2->INTENSET&TIMER_INTENSET_COMPARE1_Msk)!=0)
{
	NRF_TIMER2->EVENTS_COMPARE[1] = 0;
	//packet_timeout_handler(); 
}

}

static void packet_timeout_timer_init()

{

NRF_TIMER2->MODE      = TIMER_MODE_MODE_Timer;// timer mode
NRF_TIMER2->TASKS_CLEAR = 1;
    NRF_TIMER2->BITMODE   = TIMER_BITMODE_BITMODE_16Bit;
    NRF_TIMER2->PRESCALER = 6;//TIMER_PRESCALER;//f=16M/(2^prescale) 32us
NRF_TIMER2->CC[0]= (93750U); //3s    set time 3s but it just shows 1s
NRF_TIMER2->CC[1]=5;
NRF_TIMER2->SHORTS=(TIMER_SHORTS_COMPARE0_CLEAR_Enabled<<TIMER_SHORTS_COMPARE0_CLEAR_Pos);
NRF_TIMER2->INTENSET  = (TIMER_INTENSET_COMPARE0_Enabled <<TIMER_INTENSET_COMPARE0_Pos)|(TIMER_INTENSET_COMPARE1_Enabled <<TIMER_INTENSET_COMPARE1_Pos);
    NVIC_SetPriority(TIMER2_IRQn, 3);
    NVIC_EnableIRQ(TIMER2_IRQn);
NRF_TIMER2->TASKS_START = 1;

}

static void packet_timeout_timer_reset(void)

{ NRF_TIMER2->TASKS_CLEAR = 1; }

static void packet_timeout_timer_start(void)

{ NRF_TIMER2->TASKS_CLEAR = 1; NRF_TIMER2->TASKS_START = 1; }

static void packet_timeout_timer_stop(void)

{ NRF_TIMER2->TASKS_CLEAR = 1; NRF_TIMER2->TASKS_STOP = 1; }

int main(void)

{ uint32_t err_code; bool erase_bonds; uint8_t start_string[] =START_STRING; // Initialize

	NRF_CLOCK->EVENTS_HFCLKSTARTED=0;
	NRF_CLOCK->TASKS_HFCLKSTART=1;
	while(NRF_CLOCK->EVENTS_HFCLKSTARTED==0){
	}

leds_init();
timers_init();
buttons_init();
uart_init();
ble_stack_init();
gap_params_init();
services_init();
advertising_init();
conn_params_init();
sec_params_init();
packet_timeout_timer_init();

simple_uart_putstring(START_STRING);
advertising_start();


// Enter main loop
for (;;)
{
    power_manage();
}

}

Nalan Dean · Accepted Answer

I have solved the problem.
just set CC[0]<=65535,it's ok.