Issue with Duet 3 MB6HC – STATE and ACT LEDs Not Lighting Up

[R006]

hey,

I am using a Duet 3 MB6HC (version 1.02) with a custom build of RRF 3.4.0beta3. Upon powering up the board, I have observed that the STATE and ACT LEDs on the mainboard do not illuminate, while the LEDs on the 1XD expansion board are functioning correctly.

Due to project constraints, I am unable to update the firmware. I would appreciate any insights or recommendations on troubleshooting this issue.

@dc42 @Phaedrux

[dc42]

@R006 the LEDs were moved to different pins between revision 1.01 and 1.02 of the 6HC. Later versions of RRF detect the board version and drive the correct pins. RRF 3.4 does not include that code.

[R006]

@dc42
Thank you for your response.

If I want to change the pin number to light up LEDs, where should I modify the firmware code?

[dc42]

@R006 in firmware 3.6 the code that sets the LED pin numbers correctly depending on the board version is at src/Platform/Platform.cpp starting at line 3489.