Use RTC1 CC[1] with ble_Conn_params.c

[nordicdev]

Hi, I have a project where, I need to change the minimum and maximum (MIN_CONN_INTERVAL and MAX_CONN_INTERVAL) connection interval to higher values like 1 second and 2 second. So, I need RTC1 CC[0] for keeping track of connection interval. But I need another RTC for led blinking and tracking other timeouts in my code. So, I used RTC CC[1] to do this purpose. The problem is, during a disconnection with the app, in ble_conn_params.c, under on_disconnect, the RTC1 is stopped (app_timer_stop). As a result of this, my periodic led blinks and timeouts for other parts of the code don't work (because the timer RTC1 is stopped). How to get around with this? I use nRF51822 AA and SDK 10.0.0 S130.THanks.

[inghowe83]

Hi nordicdev Sigurd

I also facing a similar problem here. I merged a blink rtc freertos example with softblink example. The result was horrible with fast blink on my board + led stop blinking issue. I suspect it caused by the freertos rtc timer enter tickless idle mode.

int main(void)
{
    ret_code_t err_code;
    lfclk_init();

    // Start APP_TIMER to generate timeouts.
    err_code = app_timer_init();
    APP_ERROR_CHECK(err_code);

    const led_sb_init_params_t led_sb_init_param = LED_SB_INIT_DEFAULT_PARAMS(LEDS_MASK);

    err_code = led_softblink_init(&led_sb_init_param);
    APP_ERROR_CHECK(err_code);

    err_code = led_softblink_start(LEDS_MASK);
    APP_ERROR_CHECK(err_code);

    
    /* Activate deep sleep mode */
    SCB->SCR |= SCB_SCR_SLEEPDEEP_Msk;

    /* Start FreeRTOS scheduler. */
    vTaskStartScheduler();
    
    while (true)
    {
        __WFE();
    }
}

[Sigurd]

Hi inghowe83, please create a new case for this question. See this page.