Update LumenPnP Firmware

All motherboards come pre-flashed with firmware from Opulo and should work out of the box without these steps. If you need to update your LumenPnP's firmware, this guide will help you do so.

Update your LumenPnP's motherboard using the STM32CubeProgrammer software by ST.

1. Download the latest precompiled firmware .bin file for your motherboard version.

   Important

   It is important that you pick the correct firmware file for your machine.

   • If you have a v2, choose v2-lumenpnp-firmware-feeder-support.bin.
   • If you have a v3.0, choose v3.0-lumenpnp-firmware-feeder-support.bin.
   • If you have a v3.1 or higher, choose v3.1+-lumenpnp-firmware-feeder-support.bin.

2. Download and install STM32CubeProgrammer.

3. Open STM32CubeProgrammer.
4. Select USB from the connection type dropdown on the right.

5. Click on the download tab in the sidebar.

6. Attach the LumenPnP Motherboard to your computer with the included USB cable.

7. Boot your motherboard into DFU Mode

   1. Press and hold the BOOT button
   2. Press the Reset button and hold for 10 seconds
   3. Release the Reset button and wait for 10 seconds
   4. Release the BOOT button

   NOTE

   If you have a hard time getting your board to enter DFU mode, instead try unplugging both USB and the barrel jack, holding the 'BOOT' button, plugging in USB and the barrel jack, waiting 10 seconds, then releasing the BOOT button.

   If you're on Windows, try uninstalling STM32CubeProgrammer and reinstalling. This will also reinstall the USB drivers which can fix connection issues.

8. Click the refresh button in the Port line to detect the motherboard's port.

9. Select the newly discovered USB port from the Port dropdown menu.

10. Double-check the other fields on the right match the image above:

    1. PID: 0xdf11
    2. VID: 0x0483
    3. Read Unprotect (MCU): Unchecked
    4. TZEN Regression (MCU): Unchecked

11. Click the green Connect button to connect to the motherboard.

12. Delete all the flash on the chip by clicking the "Full Chip Erase" button.

    This might take a while

    Erasing all the flash on the chip takes a few minutes. Wait until you see a confirmation pop-up that the process is complete before continuing.

13. Click the Browse button and select the firmware image you downloaded earlier.

14. Click the Start Programming button to upload the firmware to the motherboard.

15. Wait until the confirmation pop-up appears that the process has completed.

16. Press the reset button on the motherboard to reboot it.

17. The machine should show up as a COM/Serial Port on your PC now, and you should be able to access it via OpenPNP. If it doesn't, press the Reset button on the board again, or power-cycle the machine after the flashing is completed.

For Developers: PlatformIO

1. Download the latest Marlin firmware and unzip it.
2. Install VSCode and its PlatformIO extension.
3. Open Marlin firmware's folder in VSCode.
4. Download the Marlin configuration files here.
5. Replace the files in the Marlin/Marlin folder from step #1 with the new configuration files from step #4.
6. Edit the platformio.ini file to indicate which board you're uploading to. Update default_envs to read Opulo_Lumen_REV3 or Opulo_Lumen_REV4 depending on your motherboard.
7. Attach the LumenPnP Motherboard to your computer with the included USB cable (USB C to A for Motherboard 3.0, or USB B to A for Motherboard 4.0).

8. Boot your motherboard into DFU Mode

   1. Press and hold the BOOT button
   2. Press the Reset button and hold for 10 seconds
   3. Release the Reset button and wait for 10 seconds
   4. Release the BOOT button

   NOTE

   If you have a hard time getting your board to enter DFU mode, instead try powering off the machine entirely, holding the 'BOOT' button, plugging in power, waiting 10 seconds, then release the BOOT button.

9. Upload firmware to the board via PlatformIO:

   

   Note

   You can also flash using the dfu-util command line utility:

   dfu-util -d 0x0483:0xdf11 -s 0x08000000:leave -a 0 -D ~/path/to/firmware.bin
   

10. Wait for the process to finish:

    

11. The machine should show up as a COM/Serial Port on your PC now, and you should be able to access it via OpenPNP. If it doesn't, press the Reset button on the board, or power-cycle the machine after the flashing is completed.

Troubleshooting

If you aren't able to upload, you can check to see if your motherboard is booting into DFU mode correctly:

• Windows:

• Mac/Linux:

Also, reference the Marlin instructions for uploading.