Differences

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--- 04_projects:03_rpi2040_pico_mmu [2025/08/19 20:33] – [Flash the binary to the Raspberry PI Pico 2040] jattie
+++ 04_projects:03_rpi2040_pico_mmu [2025/08/19 20:53] (current) – [Connect the board to the main host application] jattie
@@ Line 157: / Line 157: @@
   * Plug the Pico into your computer while holding the BOOTSEL button, it will mount as a USB drive.
   * Copy klipper.uf2 to the Pico drive, it will reboot automatically.
+===== Test the Connection =====
+  * Plug the flashed pico into K1 Max USB Port
+  * Establish an SSH connection to the K1 Max and found the new serial device.
+<code ssh>
+root@creality /root [#] ls /dev/serial/by-id/
+usb-Klipper_rp2040_E66058388361172C-if00
+root@creality /root [#]
+</code>
+We seem to have a successful Klipper installation on the Pico 2040.
 ===== Connect the board to the main host application =====
+<WRAP center round tip 60%>
+Some basic testing to confirm all is well, add the basic config and simply blink the LED on the Pico 2040.
+</WRAP>
+<code ini>
+[mcu pico_2040_mmu]
+serial: /dev/serial/by-id/usb-Klipper_rp2040_E66058388361172C-if00
+[output_pin pico_led]
+pin: pico_2040_mmu:gpio25
+pwm: False
+shutdown_value: 0
+</code>
+Adding the config and restarting Klipper however yield this error:
+<code bash>
+MCU Protocol error
+This type of error is frequently caused by running an older
+version of the firmware on the micro-controller (fix by
+recompiling and flashing the firmware).
+Your Klipper version is: 09faed31-dirty
+MCU(s) which should be updated:
+mcu: Current version 1.3.0.40-5-g6977eaff-dirty-20230711_100121-ubuntu
+nozzle_mcu: Current version 1.3.0.40-5-g6977eaff-dirty-20230711_100254-ubuntu
+leveling_mcu: Current version 1.3.0.40-5-g6977eaff-dirty-20230711_095416-ubuntu
+Up-to-date MCU(s):
+Once the underlying issue is corrected, use the "RESTART"
+command to reload the config and restart the host software.
+mcu 'pico_2040_mmu': Multi-byte msgtag not supported
+</code>