RE: Delay inside a timer handler

SG1 — Sat, 06 Jan 2024 03:58:36 GMT

Thank you, this worked well!

RE: Delay inside a timer handler

Vidar Berg — Thu, 04 Jan 2024 06:38:31 GMT

Hello,

I recommend creating a separate single-shot timer instance to trigger the ADC read operation (APP_TIMER_MODE_SINGLE_SHOT). With this approach you will not have to include any blocking delay code in your timer callback.

E.g.,

...
// Create one-shot timer
    err_code = app_timer_create(&<timer id>,
                                APP_TIMER_MODE_SINGLE_SHOT,
                                adc_read_timeout_handler);
    APP_ERROR_CHECK(err_code);
...


void adc_timeout_handler(void * p_context)
{

    UNUSED_PARAMETER(p_context)

    uint32_t err_code;

    reset_adc();
    err_code = app_timer_start(<timer id>, <delay in ticks>, NULL);
    APP_ERROR_CHECK(err_code);
}

void adc_read_timeout_handler(void * p_context)
{
    UNUSED_PARAMETER(p_context)
    
    value = adc_read();
}

Bestt regards,

Vidar