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C G

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

It wasn't till i consoled in on the ttyS0 pins, and monitored the boot process before figured the issue out.

The SDcard was partitioned and restored from from a backup on a Linux machine. For some reason uboot was misreading the size of SD overlay partition when booting. Wiping and reformatting the partition [with the omega2+], and rebuilding the SD /overlay partition from scratch, seems to have fixed the boot problem.

C G

Omega2+ was booting fine with Kernel V3 off of an miroSD overlay. I recently upgraded to kernel 4.14 via the oupgrade command. Now the V4.14 kernel rejects mounting the overlay and /dev/mtdblock6 is mounted instead.

~# block info /dev/mtdblock5
/dev/mtdblock5: UUID="2017e343-8e62014c-a4572a07-d0744c88" VERSION="4.0" MOUNT="/rom" TYPE="squashfs"

~# block info
/dev/mtdblock6: MOUNT="/overlay" TYPE="jffs2"
/dev/mtdblock7: TYPE="jffs2"
/dev/mmcblk0p1: UUID="827b1b64-091e-48c2-a40d-3c1a46286c10" VERSION="1" TYPE="swap"
/dev/mmcblk0p2: UUID="6af1b15d-c02d-4ddc-a162-2cf2052d3876" VERSION="1.0" TYPE="ext4"

~# uci show fstab
fstab.@global[0]=global
fstab.@global[0].anon_swap='0'
fstab.@global[0].anon_mount='0'
fstab.@global[0].auto_swap='1'
fstab.@global[0].auto_mount='1'
fstab.@global[0].delay_root='5'
fstab.@global[0].check_fs='0'
fstab.@swap[0]=swap
fstab.@swap[0].uuid='827b1b64-091e-48c2-a40d-3c1a46286c10'
fstab.@swap[0].enabled='1'
fstab.@mount[0]=mount
fstab.@mount[0].target='/overlay'
fstab.@mount[0].uuid='6af1b15d-c02d-4ddc-a162-2cf2052d3876'
fstab.@mount[0].enabled='1'

~# dmesg | grep block
[ 12.319013] block: attempting to load /tmp/jffs_cfg/upper/etc/config/fstab
[ 12.374230] block: extroot: UUID mismatch (root: 2017e343-8e62014c-a4572a07-d0744c88, overlay: 6af1b15d-c02d-4ddc-a162-2cf2052d3876
[ 13.415122] block: attempting to load /tmp/jffs_cfg/upper/etc/config/fstab
[ 13.467749] block: extroot: UUID mismatch (root: 2017e343-8e62014c-a4572a07-d0744c88, overlay: 6af1b15d-c02d-4ddc-a162-2cf2052d3876
[ 49.576505] br-wlan: port 1(ra0) entered blocking state
[ 49.592429] br-wlan: port 1(ra0) entered blocking state

something is missing from the wiki to fix this bug. The LEDE forums say to delete /mnt/mmcblockp2/etc/.extroot-uuid, (contents: 2017e343-8e62014c-a4572a07-d0744c88) but this file reappears every time the omega reboots.

the swap partition is mounted.

C G

Update:

My onion2+ uses a 1GB sd card as a root overlay.

for some unknown reason, 3 "invalid encoding" files with zero byte length are written on the root fs, "/". I have no idea what process creates these 3 files.

When these these files are present they interfere with /dev/ttyS1 communications and affect both python scripts and avrude write operations to the arduino dock2.

to correct this problem, I remove the SD card from the onion, fsck it in a laptop, (which is clean, without issue), and use nautilus to delete the 3 files from the SD card.

Restarting the onion with the files removed, serial communications to /dev/ttyS1 returns to normal.

C G

i have a similar problem with omega2+ (Ω-ware: 0.2.0 b177) and arduino dock2, using python2.7 to send and read data from /dev/ttyS1.

in python the serial port set as :

ser = serial.Serial('/dev/ttyS1', 9600, timeout=2)

and on the dock2 the serial port set as:

Serial.begin(9600);

The script runs fine for a while BUT:

/dev/ttyS1 will randomly lock up with no reply from the dock

or the python script freezes at:

File "/usr/lib/python2.7/site-packages/serial/serialposix.py", line 468, in read
'device reports readiness to read but returned no data '

I get around the problem by issuing gpio reset command and restarting the python script:

python snippet:

      print("error: Arduino offline - restarting")
      subprocess.call(["gpioctl","dirout-high","19"])
      subprocess.call(["gpioctl","dirout-low","19"])
      ser.close()
      python = sys.executable
      os.execl(python, python, * sys.argv)
      exit()

which allows the script to run normally (the python script is a cron job that runs every 1/2 hr and takes a minute to complete). This reset happens ~ 1 out 8 times the script is run. (much too often!)

i have no ability sniffing /dev/ttyS1 and running the python script , as /dev/ttyS1 cannot be opened by 2 processes AT THE SAME TIME.

C G

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

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

     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.

C G

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

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

     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

thanks can you expand on

@György-Farkas said in Ardrino Dock2 request reflash recovery proceedure:

If your hardware, firmware, the installed programs, the Arduino IDE on the host PC and all settings are OK then Omega2(+) with Arduino Dock 2 can identify the ATmega328P always correctly (Device signature = 0x1e950f).
You should check your on-board AVR chip in a clean state again (after a Factory Reset).

could you explain how to do a factory reset?

and the avrdude command line switches for the omega2(+) with the ardrino dock2 (to reset it or manually program it)

I've tried different combinations of

root@Omega-:~#avrdude -c avrispmkII [and others] -p m328p -P /dev/ttyS1 /tmp/sketch.hex

which errors out with:

avrdude: stk500v2_ReceiveMessage(): timeout

Thanks

C G

for some reason my onion2+ cannot flash the ardrino dock2. Seems like the atmega328p boot block now has the wrong code. When flashing from IDE 1.8.5, or flashing manually using /usr/bin/ardrino-dock,

avrdude: AVR device initialized and ready to accept instructions

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

avrdude: Device signature = 0xffff03
avrdude: Expected signature for ATmega328P is 1E 95 0F
Double check chip, or use -F to override this check.

avrdude done. Thank you.

ERROR, flash NOT successful

The Device signature changes every attempt! Grr....

This is a common problem with atmega chips yet searching the net gives garbage answers and does not help at all with the onion version.

Can the devs please write a recovery procedure to fix this problem and add it to the wiki...I am sure it will help allot of users out there. Also can the devs patch the ardrino-dock script to add the -F option?

C G

@C G

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