Ardrino Dock2 request reflash recovery proceedure



  • root@Omega-:~# avrdude -C /usr/share/arduino-dock/avrdude.conf -p atmega328p -c
    linuxgpio -P gpio -n -v

    avrdude: Version 6.1, compiled on Mar 27 2018 at 01:00:08
    Copyright (c) 2000-2005 Brian Dean, http://www.bdmicro.com/
    Copyright (c) 2007-2014 Joerg Wunsch

         System wide configuration file is "/usr/share/arduino-dock/avrdude.conf"
         User configuration file is "/root/.avrduderc"
         User configuration file does not exist or is not a regular file, skipping
    
         Using Port                    : gpio
         Using Programmer              : linuxgpio
         AVR Part                      : ATmega328P
         Chip Erase delay              : 9000 us
         PAGEL                         : PD7
         BS2                           : PC2
         RESET disposition             : dedicated
         RETRY pulse                   : SCK
         serial program mode           : yes
         parallel program mode         : yes
         Timeout                       : 200
         StabDelay                     : 100
         CmdexeDelay                   : 25
         SyncLoops                     : 32
         ByteDelay                     : 0
         PollIndex                     : 3
         PollValue                     : 0x53
         Memory Detail                 :
    
                                  Block Poll               Page                       Polled
           Memory Type Mode Delay Size  Indx Paged  Size   Size #Pages MinW  MaxW   ReadBack
           ----------- ---- ----- ----- ---- ------ ------ ---- ------ ----- ----- ---------
           eeprom        65    20     4    0 no       1024    4      0  3600  3600 0xff 0xff
           flash         65     6   128    0 yes     32768  128    256  4500  4500 0xff 0xff
           lfuse          0     0     0    0 no          1    0      0  4500  4500 0x00 0x00
           hfuse          0     0     0    0 no          1    0      0  4500  4500 0x00 0x00
           efuse          0     0     0    0 no          1    0      0  4500  4500 0x00 0x00
           lock           0     0     0    0 no          1    0      0  4500  4500 0x00 0x00
           calibration    0     0     0    0 no          1    0      0     0     0 0x00 0x00
           signature      0     0     0    0 no          3    0      0     0     0 0x00 0x00
    
         Programmer Type : linuxgpio
         Description     : Use the Linux sysfs interface to bitbang GPIO lines
         Pin assignment  : /sys/class/gpio/gpio{n}
           RESET   = ~19
           SCK     =  15
           MOSI    =  16
           MISO    =  17
    

    avrdude: AVR device initialized and ready to accept instructions

    Reading | ################################################## | 100% 0.00s

    avrdude: Device signature = 0xff8dff
    avrdude: Expected signature for ATmega328P is 1E 95 0F
    Double check chip, or use -F to override this check.

    avrdude done. Thank you.



  • @C-G Bad news. Is the signature 0xff8dff on each attempt - or does it change to a different value with every attempt?



  • it changes:

    executing avrdude -C /usr/share/arduino-dock/avrdude.conf -p atmega328p -c linuxgpio -P gpio -n -v

    3x gives:

    1st run: avrdude: Device signature = 0xfff1ff
    next run: avrdude: Device signature = 0x318f7a
    final run: avrdude: Device signature = 0xffc840



  • @C-G (If I were you) Before I'd say that your ATmega chip (or your Dock or both) is corrupted I'd check it in another way too - for example with an USB ISP programmer or with another Arduino (as ISP programmer). Perhaps I'd try to read the signature of another ATmega328P with the Dock.

    I'm afraid the signature bytes on an ATmega328P (on any ATmega) are not writable with normal programming instructions. Please correct me if I'm wrong.
    I haven't tested the next speculative command - if you think you can try it on your own risk :
    avrdude -C /usr/share/arduino-dock/avrdude.conf -p atmega328p -c linuxgpio -P gpio -v -U signature:w:0x1E,0x95,0x0F:m
    Most probably it'll fail:
    avrdude: writing signature (3 bytes)
    avrdude: verification error

    I'm very sorry - I have no more idea.
    Maybe one of our @administrators will say some cleverness to you.

    Good luck.



  • I added the -F switch:

    root@Omega-:~# avrdude -C /usr/share/arduino-dock/avrdude.conf -p atmega328p -c
    linuxgpio -P gpio -v -F -U signature:w:0x1E,0x95,0x0F:m

    avrdude: Version 6.1, compiled on Mar 27 2018 at 01:00:08
    Copyright (c) 2000-2005 Brian Dean, http://www.bdmicro.com/
    Copyright (c) 2007-2014 Joerg Wunsch

         System wide configuration file is "/usr/share/arduino-dock/avrdude.conf"
         User configuration file is "/root/.avrduderc"
         User configuration file does not exist or is not a regular file, skipping
    
         Using Port                    : gpio
         Using Programmer              : linuxgpio
         AVR Part                      : ATmega328P
         Chip Erase delay              : 9000 us
         PAGEL                         : PD7
         BS2                           : PC2
         RESET disposition             : dedicated
         RETRY pulse                   : SCK
         serial program mode           : yes
         parallel program mode         : yes
         Timeout                       : 200
         StabDelay                     : 100
         CmdexeDelay                   : 25
         SyncLoops                     : 32
         ByteDelay                     : 0
         PollIndex                     : 3
         PollValue                     : 0x53
         Memory Detail                 :
    
                                  Block Poll               Page                       Polled
           Memory Type Mode Delay Size  Indx Paged  Size   Size #Pages MinW  MaxW   ReadBack
           ----------- ---- ----- ----- ---- ------ ------ ---- ------ ----- ----- ---------
           eeprom        65    20     4    0 no       1024    4      0  3600  3600 0xff 0xff
           flash         65     6   128    0 yes     32768  128    256  4500  4500 0xff 0xff
           lfuse          0     0     0    0 no          1    0      0  4500  4500 0x00 0x00
           hfuse          0     0     0    0 no          1    0      0  4500  4500 0x00 0x00
           efuse          0     0     0    0 no          1    0      0  4500  4500 0x00 0x00
           lock           0     0     0    0 no          1    0      0  4500  4500 0x00 0x00
           calibration    0     0     0    0 no          1    0      0     0     0 0x00 0x00
           signature      0     0     0    0 no          3    0      0     0     0 0x00 0x00
    
         Programmer Type : linuxgpio
         Description     : Use the Linux sysfs interface to bitbang GPIO lines
         Pin assignment  : /sys/class/gpio/gpio{n}
           RESET   = ~19
           SCK     =  15
           MOSI    =  16
           MISO    =  17
    

    avrdude: AVR device initialized and ready to accept instructions

    Reading | ################################################## | 100% 0.00s

    avrdude: Device signature = 0xff6323
    avrdude: Expected signature for ATmega328P is 1E 95 0F
    avrdude: safemode: lfuse reads as FF
    avrdude: safemode: hfuse reads as DA
    avrdude: safemode: efuse reads as 5
    avrdude: reading input file "0x1E,0x95,0x0F"
    avrdude: writing signature (3 bytes):

    Writing | ################################################## | 100% 0.00s

    avrdude: 3 bytes of signature written
    avrdude: verifying signature memory against 0x1E,0x95,0x0F:
    avrdude: load data signature data from input file 0x1E,0x95,0x0F:
    avrdude: input file 0x1E contains 3 bytes
    avrdude: reading on-chip signature data:

    Reading | ################################################## | 100% 0.00s

    avrdude: verifying ...
    avrdude: 3 bytes of signature verified

    avrdude: safemode: lfuse reads as FF
    avrdude: safemode: hfuse reads as DA
    avrdude: safemode: efuse reads as 5
    avrdude: safemode: Fuses OK (E:05, H:DA, L:FF)

    avrdude done. Thank you.

    BUT, it didn't change anything:

    root@Omega-:~# avrdude -C /usr/share/arduino-dock/avrdude.conf -p atmega328p -c
    linuxgpio -P gpio -v

    (output muted for brevity)

    avrdude: AVR device initialized and ready to accept instructions

    Reading | ################################################## | 100% 0.00s

    avrdude: Device signature = 0xe01cff
    avrdude: Expected signature for ATmega328P is 1E 95 0F
    Double check chip, or use -F to override this check.

    avrdude done. Thank you.

    Seems like i need to burn a new boot loader, by using a 2nd ardrino as an "Ardino as ISP" programmer.

    https://learn.sparkfun.com/tutorials/installing-an-arduino-bootloader.

    The correct bootloader code is required for the atmega328p to accept programming from the serial port.

    I wonder if the omega has access to the ICSP port. If not, i have a spare uno i could use as a programmer, but i am unsure which IDE settings to use, as the example in the link is for uno to uno.



  • i fixed it by following this:

    https://www.arduino.cc/en/Tutorial/ArduinoISP

    the procedure i used was:

    upload ardrinoISP sketch to a spare Ardrino uno.

    remove all connections and omega2+ from the ardino dock2.

    connected the uno to the dock2 icsp port as shown in the 1st link.

    set ardrino IDE to board "Ardrino/Genuino Uno"
    set ardrino IDE programmer to "Ardino as ISP"
    set port to /dev/tty/ACMO

    selected "burn bootloader"

    disconnected the uno.

    reinstalled the omega2+

    now the dock2 is programmable via the omega2+ using

    set ardrino IDE to board "Ardrino/Genuino Uno"

    and

    Programmer "AVRISP mII"

    via the network port

    root@Omega-:~# avrdude -C /usr/share/arduino-dock/avrdude.conf -p atmega328p -c linuxgpio -P gpio -n -v

    reports consistently:

    avrdude: AVR device initialized and ready to accept instructions

    Reading | ################################################## | 100% 0.00s

    avrdude: Device signature = 0x1e950f
    avrdude: safemode: lfuse reads as FF
    avrdude: safemode: hfuse reads as DA
    avrdude: safemode: efuse reads as 5

    avrdude: safemode: lfuse reads as FF
    avrdude: safemode: hfuse reads as DA
    avrdude: safemode: efuse reads as 5
    avrdude: safemode: Fuses OK (E:05, H:DA, L:FF)

    avrdude done. Thank you.



  • @C-G Congratulations!
    So the external programmer (the other Arduino) was reading the correct signature and that's how it was able to (re)write the chip.
    I don't fully understand the way your method works but that's not the point. The main thing is that everything is working fine now.

    Onion's official Arduino IDE setting (IDE >> Tools) is different than yours:

    Board: "Onion Arduino Dock"
    Port: "Omega-XXXX at_IP_address (Arduino/Genuino Uno)"
    Programmer: "irrelevant"

    vs.

    Board "Ardrino/Genuino Uno"
    Port: "network port"
    Programmer "AVRISP mII"

    But if this is working out for you ... that's your call. :-)

    Footnote:
    I'm sorry the original cause of the error was not revealed after all. I wouldn't want to reproduce it intentionally but if I accidentally stumble upon this error I'll try your method too.



  • @C-G Thanks so much. This totally worked. Don't forget the 10 micro-f capacitor between ground and reset on the programming Arduino.



  • @Matthew-Lousteau Take that back. I reacted too quickly.



  • @Matthew-Lousteau OK. so it works, but if I have a ground pin connected into my project, it won't let me flash my sketch. If I disconnect the ground pin, I can flash the sketch and reconnect the pin afterwards and the sketch runs as I expected.


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