Klipper Expander restart not working

[RcTomcat1]

Hi,

I just installed my klipper expander. Flashed with current klipper. Issue: Issuing a restart command via fluidd leads to the expander board being unreachable. I need to power cycle the board or press the physical reset button.

Expected behaviour: I expected the restart command to just restart the MCUs (board and expander)

Setup: FYSETC Spider 2.2 on a Voron 2.4 Raspberry Pi 3b+ running Klipper v0.10.0-235-gf97fd7c6 and fluidd v.1.16.2 Klipper Expander with flashed with Klipper via the Pi. The spider board is connected via GPIO Pins, The Expander via USB

Config: ` [mcu expander] serial: /dev/serial/by-id/usb-Klipper_stm32f042x6_2A002E000843534133343520-if00 restart_method: command

baud: 250000

[output_pin mosfet0]

pin: expander:PA0

value: 0

shutdown_value: 0

[temperature_sensor raspberry_pi] sensor_type: temperature_host min_temp: 10 max_temp: 100

[temperature_sensor MCU_Board_Expander] sensor_type: temperature_mcu min_temp: 10 max_temp: 100

[heater_fan controller_fan-expander]

Controller fan - FAN2 Connector

pin: expander:PA0 kick_start_time: 0.5 heater: heater_bed heater_temp: 45.0 max_power: 0.5 shutdown_speed: 0.0 kick_start_time: 5.0 fan_speed: 1.0

[output_pin mosfet1]

pin: expander:PA1

value: 0

shutdown_value: 0

[heater_fan exhaust_fan]

Exhaust fan

pin: expander:PA1 kick_start_time: 0.5 heater: heater_bed heater_temp: 60.0 max_power: 0.5 shutdown_speed: 0.0 kick_start_time: 5.0 fan_speed: 1.0

max_power: 0.5

off_below: 0.10

[output_pin mosfet2]

pin: expander:PA2

value: 0

shutdown_value: 0

[output_pin mosfet3]

pin: expander:PA3

value: 0

shutdown_value: 0

Status LED lights when klipper connects

[static_digital_output onboardLED] pins: !expander:PA4

[neopixel Pixel] pin: expander:PB1 chain_count: 1 initial_RED: 0.9 initial_GREEN: 0.3 initial_BLUE: 0.0

[display]

lcd_type: sh1106

i2c_bus: i2c1a

Other Pins

GPIO = PA7

[temperature_sensor t0]

sensor_type: ATC Semitec 104GT-2

sensor_pin: expander:PA5

gcode_id=0

[temperature_sensor Gehaeuse] sensor_type: ATC Semitec 104GT-2 sensor_pin: expander:PA6 gcode_id=1`

This config is referenced in the printer.cfg

Is it normal not to be able to restart via command?

[raymondh2]

This seems to be an issue with klipper and the MCU used. I suggest seeking help on the Klipper help sites

[HitLuca]

@RcTomcat1 have you ever fixed your issue?