err:Missed scheduling of next digital out event

General Discussion
1

[output_pin power]
pin:PB4
value:1
shutdown_value:0
maximum_mcu_duration:1

I use this output_pin function and it needs to be high for power on and low for power off. Now it keeps reporting the following error
pins.error: Pin with max duration must have start value equal to shutdown value
Later I found the error mask here in the source code and restarted the klipper with the following error
MCU ‘mcu’ shutdown: Missed scheduling of next digital out event

I just need to block the output_pin in the config file for these 2 errors and it works fine. What is the cause of this

2

See [output_pin] maximum_mcu_duration param

3

I need value = 1 shutdown_value =0 if set maximum_mcu_duration =0
Error ‘output_pin power’ must have a minimum value of 0.5

4

Apparently not possible today, at least not with this function.
You might want to check various Moonraker functionalities that can also react on such events, e.g.