LED continuous glow

Dear Dialog team,

Thank you for your support.

We have custom board made from DA14683. We have 3 LEDs on this board and they are not tied to any GPIOs. We use LED low level driver APIs turn on them. Below is the reference code:

static timer2_config cfg = {
.frequency = 0,
.pwm2_end = 0,
.pwm2_start = 0,
.pwm3_end = 0,
.pwm3_start = 0,
.pwm4_end = 0,
.pwm4_start = 0,
};
hw_timer2_init(&cfg);
hw_timer2_set_division_factor(HW_TIMER2_DIV_4);
hw_timer2_set_frequency(100);
hw_timer2_set_pwm_duty_cycle(HW_TIMER2_PWM_2, 100);
hw_timer2_enable();
hw_led_set_led1_src(HW_LED_SRC1_PWM2);
hw_led_enable_led1(true);

Is the above code correct to turn on LED?

If yes, then our reference project is BLE peripheral. Our application reads sensors data continuously, stores the data in flash and when app is connected via bluetooth, then sensor data will be transmitted to the app.

We observed that LED turns on, when the board brings up, but turns off, after few seconds. Is this because of setting pm_extended_sleep mode (during advertising mode, board wakesup and goes to sleep after advertising)? If we set to pm_active_mode, then LED glows continuously. If we move the above code (LED code) to periph_init() function, then LED blinks.

If we need to use pm_extended_sleep mode, can you suggest how to glow LED continuously? Also suggest, whether we need to use pm_extended_sleep or pm_active_mode setting for our application. We observed this behaviour in development kit also.

Please let us know for any clarifications.

Best regards

Malli