Timer Prescaler

[Lorens]

I have a problem enabling TIMER1: If the prescaler is set between 16MHz and 2 MHz the firmware fails to enable the SoftDevice, even if I didn't manage TIMER0, but TIMER1 which should be dedicated to the softDevice. Using a lower prescaler instead it works. I enable the timer before enabling SoftDevice.

I am working on NRF51822 with softdevice S110 8.0.0.

Am I doing ssomething wrong or not alloweed?

Thank you

[Lorens]

I use Timer1, for the reason you mentioned.

Here some parts of the Code:

#define TIMER1_ENABLED 1

#if (TIMER1_ENABLED == 1)
#define TIMER1_CONFIG_FREQUENCY    NRF_TIMER_FREQ_1MHz
#define TIMER1_CONFIG_MODE         TIMER_MODE_MODE_Timer
#define TIMER1_CONFIG_BIT_WIDTH    TIMER_BITMODE_BITMODE_16Bit
#define TIMER1_CONFIG_IRQ_PRIORITY APP_IRQ_PRIORITY_HIGH

#define TIMER1_INSTANCE_INDEX      (TIMER0_ENABLED)
#endif

Here the initialization:

    Timer_DRV.p_reg 			= NRF_TIMER1;
Timer_DRV.irq					= TIMER1_IRQn;
Timer_DRV.instance_id = TIMER1_INSTANCE_INDEX;

Timer_DRV_Conf.frequency					= TIMER1_CONFIG_FREQUENCY;
Timer_DRV_Conf.mode								= TIMER1_CONFIG_MODE;
Timer_DRV_Conf.bit_width					= TIMER1_CONFIG_BIT_WIDTH;
Timer_DRV_Conf.interrupt_priority	= TIMER1_CONFIG_IRQ_PRIORITY;
Timer_DRV_Conf.p_context					= timer_struct;

nrf_drv_timer_init(&Timer_DRV,
                          &Timer_DRV_Conf,
                          timer_clk_handler);

And then configuration interrupt:

            nrf_drv_timer_compare(&Timer_DRV, NRF_TIMER_CC_CHANNEL0, 60, true);
	nrf_drv_timer_compare(&Timer_DRV, NRF_TIMER_CC_CHANNEL1, 120, true);
	nrf_drv_timer_compare(&Timer_DRV, NRF_TIMER_CC_CHANNEL2, 180, true);
	nrf_drv_timer_extended_compare(&Timer_DRV, NRF_TIMER_CC_CHANNEL3, 240, NRF_TIMER_SHORT_COMPARE3_CLEAR_MASK,
                                    true);

Thank you

[Susheel Nuguru]

You code looks correct (except that i cannot see values of some defines) What is the symptoms you are seeing? is your handler not triggering correctly with softdevice? You description in the question was not so clear about the problem