Updating klipper on EBB36

General Discussion
1

Hi guys,

I have running klipper for a while now on EBB36.
Today I wanted to update the board, so it is in sync again with my Raspi and
Arduino based board. However, upgrading via CAN always fails.

# stop klipper to avoid interference on CAN
$> sudo systemctl stop klipper
# flash firmware
$> ~/CanBoot/scripts/flash_can.py -i can0 -f ~/klipper/out/klipper.bin -u f3e651546187
Flashing CAN UUID f3e651546187 on interface can0
Sending bootloader jump command...
Resetting all bootloader node IDs...
Attempting to connect to bootloader
ERROR:root:Flash Error
Traceback (most recent call last):
  File "/home/pi/CanBoot/scripts/flash_can.py", line 499, in run
    await flasher.connect_btl()
  File "/home/pi/CanBoot/scripts/flash_can.py", line 99, in connect_btl
    ret = await self.send_command('CONNECT')
  File "/home/pi/CanBoot/scripts/flash_can.py", line 216, in send_command
    raise FlashError("Error sending command [%s] to Device" % (cmdname))
FlashError: Error sending command [CONNECT] to Device

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/home/pi/CanBoot/scripts/flash_can.py", line 661, in main
    await sock.run(intf, uuid, fpath, req_only)
  File "/home/pi/CanBoot/scripts/flash_can.py", line 507, in run
    await flasher.finish()
  File "/home/pi/CanBoot/scripts/flash_can.py", line 295, in finish
    await self.send_command("COMPLETE")
  File "/home/pi/CanBoot/scripts/flash_can.py", line 216, in send_command
    raise FlashError("Error sending command [%s] to Device" % (cmdname))
FlashError: Error sending command [COMPLETE] to Device

Then I tried to update CanBoot to see if this could help. But I also fail to
set the EBB36 to DFU mode, so that I can update it via USB. Initially, I had CAN
and USB connected when setting the USB jumper. Can this fry the USB chip? What
ever I tried with the usual boot/reset button, the USB device does not appear.

Still, klipper can connect to the board using the given UUID, so in general it
works, only updating is not possible. Any ideas?

2

Hello!

“USB jumper” I think is for power over USB, in case it is not being powered by the canbus.

PA2 is used for the hotend MOSFET in EBB36 & 42 CAN V1.1, The high level in the DFU mode change the hotend into heating state. Therefore, please pay attention to disconnect the main power VIN of the hotend when using the DFU of Type-C port to update the firmware, or ensure that the firmware update is completed soon and goto the normal working mode. Never keep MCU in DFU mode for a long time when the main power supply and hotend are connected.

when pressing boot and reset, releasing reset first without canbus power and with jumper

lsusb 
ID 0483:df11 STMicroelectronics STM Device in DFU Mode

There is a recommendation for changing the canbus speed on the website
" GitHub - bigtreetech/EBB "

try new katapult

my commands maybe usefull
"FYSETC-PITB/V2.0/help2.txt at main · ejhoness/FYSETC-PITB · GitHub " or help.txt

3

Thanks for your files. Unfortunately, I cannot start DFU mode anymore.
When I watch the kernel log using sudo dmesg -w there is not a single entry.
I know how to hold the boot button, reset and then release the boot button. But I guess the usb serial converter is dead.
I ordered a new Board now on AliExpress…

4

sorry about that, i don’t understand the language well so confused. sad about that, could it be because of the usb jumper?