5. Canbus

ID: 152103

Description: Do not connect 24v until told to do so. It's...

Steps:

  1. Create the CAN0 interface file
  2. sudo nano /etc/network/interfaces.d/can0
  3. Enter the following
  4. auto can0 iface can0 can static bitrate 500000 up ifconfig $IFACE txqueuelen 256 pre-up ip link set can0 type can bitrate 500000 pre-up ip link set can0 txqueuelen 256
  5. You can copy paste into the file but make sure your formatting is correct to include the single space in the beginning of the last 4 lines.
  6. Exit and save the file with CTRL + SHIFT X > Yes
  7. Sudo Reboot
    8. Step image
  8. The CAN board needs a bootloader so we can flash the Klipper firmware. We will use CanBoot. Download the CanBoot repository:
  9. git clone https://github.com/Arksine/CanBoot
  10. cd CanBoot
  11. make clean
  12. make menuconfig
    13. Step image Step image
  13. Micro-controller Architecture > (STMicroelectronics STM32)
  14. Processer model > STM32F072
  15. Build CanBoot Deployment Application > (Do not build)
  16. Bootloader offset > (8KiB bootloader)
  17. Clock Reference > (8 MHz)
  18. (500000) CAN bus speed
  19. Communication interface > (CAN bus (on PB8/PB9))
    20. Step image
  20. Micro-controller Architecture > (STMicroelectronics STM32)
  21. Processer model > STM32G0B1
  22. Build CanBoot Deployment Application > (Do not build)
  23. Clock Reference > (8 MHz)
  24. Communication interface > (CAN bus (on PB0/PB1))
  25. Application start offset > (8KiB offset)
  26. (500000) CAN bus speed
    27. Step image
  27. Add the 5v jumper. Connect the USB-C from the Pi to the EBB36 board.
  28. Put the EBB36 into DFU mode
  29. Press and hold the RESET + BOOT button. Release the RESET button while holding the BOOT button, than release the BOOT button.
  30. Get the device ID of the board after it's in DFU mode
  31. Before DFU mode
  32. In DFU mode
    33. Step image Step image
  33. Erase and flash the firmware
  34. sudo dfu-util -a 0 -D ~/CanBoot/out/canboot.bin --dfuse-address 0x08000000:force:mass-erase:leave -d DEVICE:ID
  35. Power off the system. Plug in the 4 wire CAN cable from the UT0C to the EBB36, and power on the the printer and RPI.
  36. After the system is powered up verify the CAN network is up.
  37. cd klipper
  38. python3 lib/canboot/flash_can.py -q
  39. You should see 1 entry for application CanBoot. Note your UUID.
    40. Step image Step image
  40. Run
  41. cd ~/klipper
  42. make menuconfig
  43. Select the following
  44. Enable extra low-level configuration
  45. Micro-controller Architecture > (STMicroelectronics STM32)
  46. Processer model > STM32F072
  47. Bootloader offset > (8KiB bootloader)
    48. Step image
  48. continued:
  49. Clock Reference > (8 MHz)
  50. (500000) CAN bus speed
  51. Save the configuration pressing ESC > Yes
  52. Run
  53. make clean
  54. make
    55. Step image
  55. Micro-controller Architecture > (STMicroelectronics STM32)
  56. Processer model > STM32G0B1
  57. Bootloader offset > (8KiB bootloader)
  58. Clock Reference > (8 MHz)
  59. Communication interface > (CAN bus (on PB0/PB1))
  60. (500000) CAN bus speed
    61. Step image
  61. flash the EBB36 with the newly compiled firmware
  62. python3 ~/CanBoot/scripts/flash_can.py -i can0 -f ~/klipper/out/klipper.bin -u 9fd4db4bdbc0
  63. sudo dfu-util -a 0 -d 0483:df11 --dfuse-address 0x08000000 -D ~/CanBoot/out/canboot.bin
  64. If all goes well your CAN board should now be flashed
  65. run
  66. ~/klippy-env/bin/python ~/klipper/scripts/canbus_query.py can0
  67. Load the provided files to the printer and press FIRMWARE_RESTART
  68. Checking the Machine tab you should see the 4 systems
    69. Step image Step image Step image
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