Can't get LED pin to enable after disabling once

I feel like this is a stupid question, but I can't seem to find the answer.

I am using the led pin on the da14683 to drive the backlight of a display.

我有这段代码,我真的在我的任务ggling between on and off every 5 seconds. The backlight will power up initially, but after being disabled once, it will never power on again. I know the display is going into and out of sleep mode every 5 seconds (I'm watching the current consumption), but no backlight.

For what it is worth, I assume this is an issue with sleep mode on the device. When I set the device to pm_set_sleep_mode(pm_mode_active); instead of extended_sleep I am able to turn the LED pins back on with the following code.

Any ideas?


void displayPower(int ON_OFF)
{
if(ON_OFF)
{
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_3, 127);
hw_timer2_enable();
hw_led_set_led2_src(HW_LED_SRC2_PWM3);
hw_led_enable_led2(true);
//Out of sleep mode
displayWriteCommand(ST7789_SLPOUT);
OS_DELAY_MS(10);
displayWriteCommand(ST7789_DISPON);
}
else
{
hw_led_enable_led2(false);
//Into sleep mode
displayWriteCommand(ST7789_SLPIN);
OS_DELAY_MS(10);
displayWriteCommand(ST7789_DISPOFF);
}
}