low_power_pwm_stop does not work increasing the consumption by 200 uA

[Esteban Gutiérrez Correa]

Hello to all

I'm working in an application that needs to be completely power optimized. In this program the device works as a scanner that if it finds an specific device then puts a pwm in a pin, I already got this working with a low_power_pwm. The problem is that when the power_manage function is working, i.e, when the device is almost asleep, the consumption is 240uA, I managed to track 200 uA of this due to the low_power_pwm being activated, tried to use low_power_pwm_stop but didn't work it just keep the pin in a 100% duty, tried the solutions posted here, didn't work. The last thing I tried was sd_power_system_off but without an external wake up call it just stays in deep sleep and I believe even if this woke up with a timer, it wouldn't be a good option for my application. Appreciate any help you can give me, thanks :)

[Esteban Gutiérrez Correa]

here's the initialization of the low_power_pwm:

static void pwm_init(void) {
	uint32_t err_code;
	low_power_pwm_config_t low_power_pwm_config;

	APP_TIMER_DEF(lpp_timer_2);
	low_power_pwm_config.active_high = false;
	low_power_pwm_config.period = 100;
	low_power_pwm_config.bit_mask = GPIO_OUT_BITMASK;
	low_power_pwm_config.p_timer_id = &lpp_timer_2;

	err_code = low_power_pwm_init((&low_power_pwm_2), &low_power_pwm_config,
			NULL);
	APP_ERROR_CHECK(err_code);
	err_code = low_power_pwm_duty_set(&low_power_pwm_2, 100);
	APP_ERROR_CHECK(err_code);

	err_code = low_power_pwm_start((&low_power_pwm_2),
			low_power_pwm_2.bit_mask);
	APP_ERROR_CHECK(err_code);
}