NRFX_TIMER0_INST_IDX undeclared here

[hrms]

I use NRF52840 Evaluation Kit.

I want to use TIMER with nrf_drv_timer. However, I get an error and cannot use it. The error is the following part of "nrfx_timer.h".

#define NRFX_TIMER_INSTANCE(id) \
{ \
.p_reg = NRFX_CONCAT_2(NRF_TIMER, id), \
.instance_id = NRFX_CONCAT_3(NRFX_TIMER, id, _INST_IDX), \
.cc_channel_count = NRF_TIMER_CC_CHANNEL_COUNT(id), \
}

[Amanda Hsieh]

Hi, 

Please check this post can help or not. 

-Amanda H.

[hrms]

Thank you，

but, I want to use high frequency clock timer

[Amanda Hsieh]

Hi, 

Do you enable your timer instance in your sdk_config.h:

#define NRFX_TIMER0_ENABLED 1

If you are using the Softdevice, it uses TIMER0, so you'll need to use another available timer instance.

-Amanda H. 

[hrms]

    NRF_TIMER1->BITMODE     = TIMER_BITMODE_BITMODE_32Bit;
    NRF_TIMER1->PRESCALER   = 4;
    NRF_TIMER1->MODE        = TIMER_MODE_MODE_Timer << TIMER_MODE_MODE_Pos;
    NRF_TIMER1->INTENSET    = TIMER_INTENSET_COMPARE0_Enabled << TIMER_MODE_MODE_Pos;

    NRF_TIMER1->TASKS_START = 1;

When TIMER1 is set, the count value of the high frequency clock can be obtained.
Thank you.

[Amanda Hsieh]

Please kindly verify the answer to this case to help other users identify the solution.  

-Amanda H.