Arduino bootloader issue



  • Hi folks,

    I'm following this guide : https://wiki.onion.io/Tutorials/Arduino-Dock/Initial-Setup

    Unfortunately, I am not able to use my Omega & Expansion dock as a programmer.
    (https://wiki.onion.io/Tutorials/Arduino-Dock/Initial-Setup#arduino-dock-setup_using-the-omega-expansion-dock-as-a-programmer)

    I did all the wiring as proposed and when I connect the micro-USB, the Omega isn't booting, the led on the arduino dock keep flashing and I can't access my Omega through Putty.

    My version is 0.0.6 b266

    What am I missing ?



  • Nobody ?


  • administrators

    Hi @SYLVAIN-MAILHIOT
    Just to confirm, when you connect the Expansion Dock to the Arduino Dock the Omega won't boot?

    Can you try first booting up the Omega and then connecting the wires?
    Please let me know how it goes



  • @Lazar-Demin

    Seems that was working.

    I didn't took the chance to connect the arduino dock when the omega was live.

    this is my result :

    [.....]
    Reading | ################################################## | 100% 0.00s

    avrdude: verifying ...
    avrdude: 1 bytes of lock verified

    avrdude: safemode: Fuses OK (E:05, H:DA, L:FF)

    avrdude done. Thank you.


  • administrators

    @SYLVAIN-MAILHIOT awesome, I'm glad it worked out!
    happy hacking!



  • Am I right?
    The micro USB on the Arduino Dock is only used to power the 'Omega/Arduino' assembly.
    The actual flashing is performed via Wi-Fi.

    • When I have the Arduino with the Omega plugged onto it and flash software for the Arduino
      Programming is successful but I always get this error message in the Arduino environment:
      ash: merge-sketch-with-bootloader.lua: not found
      I looked in the Omega and find these references to the file:
      find -name merge-sketch-with-bootloader.lua
      ./rom/usr/bin/merge-sketch-with-bootloader.lua
      ./usr/bin/merge-sketch-with-bootloader.lua
      I see the I/O responding to the software after the flash, why do I get this bootloader error ?

  • administrators

    @Robert-St-Laurent Yep, the Arduino IDE transmits the sketch to the Omega via SCP or SFTP (that's why it asks for a password), and then the Omega flashes the ATmega chip. The micro USB only provides power.

    The ash: merge-sketch-with-bootloader.lua: not found error will show up every time. This is just supposed to be a script that does some (largely insignificant) processing of the sketch before it is flashed to the ATmega. It fails on the Omega since lua isn't installed by default.
    You can just ignore it. If the flash fails, there will be other errors.



  • I have the same issue with bootloader.lua

    Sketch uses 1,030 bytes (3%) of program storage space. Maximum is 32,256 bytes.
    Global variables use 9 bytes (0%) of dynamic memory, leaving 2,039 bytes for local variables. Maximum is 2,048 bytes.
    ash: merge-sketch-with-bootloader.lua: not found
    Flashing application '/tmp/sketch.hex' ...
    Error: Write failed
    Done
    Flash complete!
    failed to switch to bootloader (invalid address?): No such device or address

    I'm connecting to the arduino expension board using micro usb. I was able to flash it multiple times. Somehow, it stopped working :(

    Any tip ?


  • administrators

    @SYLVAIN-MAILHIOT so the issue isn't the lua script. The issue is that the ATmega is not receiving the I2C command the Omega sends to put the ATmega into reset so that the new sketch can be flashed (as described in the Wiki).

    The sketch you loaded last most likely didn't have the Onion Arduino library right?
    In any case, try pressing the MCU_RESET button on the Arduino Dock right before loading the sketch. While Arduino Dock LED is flickering super quickly, the sketch upload will work.



  • I'm attempting to burn a new bootloader to the Arduino dock via the instructions here: https://wiki.onion.io/Tutorials/Arduino-Dock/Initial-Setup

    It would be great to update the tutorial to clarify booting the Omega first before wiring things up.

    My Omega is running 0.0.6 b266. In multiple re-wirings, trying different sequences, I have noticed that the LED on the A-dock stops blinking when I connect the A-dock 13 pin to the Expansion Dock pin 6.

    I've double checked the pins and confirmed all the wires work. Here's what I'm seeing when I attempt to flash the bootloader:

    sh /usr/bin/arduino-dock flash bootloader
    Flashing bootloader...

    avrdude: AVR device not responding
    avrdude: initialization failed, rc=-1
    Double check connections and try again, or use -F to override
    this check.

    avrdude done. Thank you.

    avrdude: AVR device not responding
    avrdude: initialization failed, rc=-1
    Double check connections and try again, or use -F to override
    this check.
    avrdude done. Thank you.
    Done

    =============
    If I can get accurate information, I'd be happy to help clarify the documentation, if that is an option.


  • administrators

    @R-H Sorry bout that, I've updated the wiki to clarify when the Omega should be booted.

    Can you try using the ICSP header method described here?
    Let me know how that goes.



  • The MCU_RESET press method has worked for me, but I need to do this every time I upload a sketch. Is there any way to get around the need for this?


  • administrators

    Hi @Peter-Bailey
    Sorry for the late response, do your sketches include the Onion Arduino Library and instantiate an Onion object as mentioned in the Arduino Dock article?



  • turning off wireless AP fixed this exact same issue for me, might want to add that to the wiki too. Make sure it isn't configured as an access point.


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