Mcu problem / printer not ready

General Discussion
1

Hello,

I am trying to config Klipper on SKR 1.4 board.
I went thru the config. Fluid is installed on my Raspeberry Pi. I compiled and flashed the firmware on my board. Yet it keeps showing “Printer is not ready” and “mcu ‘mcu’: Unable to connect”.

When I check if the board is connected to the Pi with “ls /dev/serial/by-id/*”,
I get “serial: /dev/serial/by-id/usb-Klipper_lpc1768_05E0FF01809C48AF441F3A5DC62000F5-if00lpc”
So I tried to input this in my printer.cfg but my klippy.log keeps showing the mcu being “serial = /dev/serial/by-id/usb-1a86_USB_Serial-if00-port0”
When I tried to untick the USB during compilation of the firmware. I am not able to get anything in the serial request.
When I input the serial that klippy.log gives me. nothing changes…

Here is klippy.log (225.9 KB)

can someone guide me?

Thank you

Arthur

2

It looks like you chose the wrong board type during make menuconfig. SKR 1.4 has a LPC1769 chip.

grafik

3

thank you for the reply.
Unfortunately, it is not the problem since my board is a non-turbo one.
SKR 1.4 has a LPC1768 chip and the SKR 1.4 turbo has a LPC1769 chip.

4

Yes, sorry, of course you are right.

This basically looks correct. Sometimes a board is not correctly flashed. Try repeating the flashing process.
What strikes me a bit strange is -if00lpc ending. Typically it looks like
/dev/serial/by-id/usb-Klipper_lpc1769_0C70001625813AAF86E06B5CC32000F5-if00 → just if00 without the lpc

5

Thank you!
I double checked today the “ls /dev/serial/by-id/*” and there was no lpc at the end. So I removed it from the printer.cfg and it stopped showing me the “printer is not ready” error.
Thank you!