Omega 2 and Arduino dock.

Kit Bishop

Regarding your questions:

Now, I need to figure out if the arduino dock 2 comes ready to use out of the box or if I need to flash the bootloader on it. Doesn't seem to be much info on v2 of the dock.

Anyone know if I can us the Ω2 pin breakouts on the AD2 and follow these instructions to flash the dock?

I don't know but I certainly hope so (would be nice if we got up to date Omega 2 and Arduino Dock V2 documentation). I currently have the original Omega and Arduino dock and am awaiting my Omega 2+ and Arduino Dock V2 - on their way, I have tracking info but not here yet. I will be trying it all out when they arrive - let us know how you get on.

I would suspect that the Arduino Dock V2 will need flashing before use - presumably using the same (or similar) process as in the documentation you reference.

However, note that the documentation you reference really only relates to using the Arduino Dock to drive Neopixels from the Omega. That said, the techniques used therein can be adapted for more generic use of the Arduino Dock from the Omega.
For the original Omega and Arduino Dock, I have produced some generic code that can be found at https://github.com/KitBishop/Omega-GPIO-I2C-Arduino/tree/master/libarduino (for the Omega side) and https://github.com/KitBishop/Omega-GPIO-I2C-Arduino/tree/master/arduino_omega (for the Arduino side). These all make use of some of the other components in https://github.com/KitBishop/Omega-GPIO-I2C-Arduino and come complete with detailed documentation in the .pdf files.

As soon as my Omega 2+ and Arduino Dock V2 arrive I will be checking that my code works with them too

Cesar Vargas

@Kit-Bishop Thank you so much! I'm really excited to get this thing going and start on some projects!

So I was going to give it a try earlier but I hit a snag.

In comparing the pins from the table to the expansion headers (pin diagrams) of both the Arduino Dock 2 and the Expansion Docks, pin 19 is missing from the Arduino Dock 2.

Hopefully someone from Onion can chime in or update the guide like you mentioned. But until then i think I'm going to have to breadboard it out.

I'll report back if I have any success.

Cheers.

Kit Bishop

@Cesar-Vargas This looks odd to me - I would have hoped that the GPIO connector on the Arduino Dock matched that on the expansion dock.

However:

There are some small differences in pin out on the latest Expansion Dock compared to the original one though pin 19 wasn't one of the ones in question (see here: https://community.onion.io/topic/1036/mini-dock-vs-roiginal-dock/8 for discussion on pin differences)
The original Arduino Dock did not have a GPIO connector - one of its flaws which at least seems to be (partially) addressed with Arduino Dock V2 - but since mine hasn't arrived yet, I can't really investigate yet.

Hopefully the Omega admins can clarify on the issue with pin 19 - but they have been noticeably very silent recently

Cesar Vargas

@Kit-Bishop You're right, that table on that link you posted pins 19 appear identical on both omega and omega2.
Therefore the discrepancy must be just on the expansion headers that the docks include?

Hopefully you get yours soon since I'm just hitting roadblock after roadblock. I dont have any breadboards that are the correct size for the omega2 so that end up going nowhere unless I buy and wait for the breadboard dock.

I did some digging around and when running the command opkg install arduino-dock I picked up the url, http://repo.onion.io/omega2/packages/onion/ on that page are some references to arduino-dock-2.

So i tried pulling some of those files down and seeing if I saw anything useful, but it's still all pretty new to me so i got no where. Can those pin numbers just be changed to use a different pin on the ArDock2 that isn't a ground pin?

Also quite a longshot, but I though that maybe there was a chance that the onion peeps may have hidden the ability to just flash the bootloader, so I opkg install arduino-dock-2 and tried the flash bootloader script, and pretty much errorred out saying:

Can't export GPIO 19, already exported/busy?: Invalid argument

Anyways, I'm still tinkering away, hoping i don't brick something lol.

Happy New Years

Andre Courchesne

Re: Omega 2 and Arduino dock.

I have exactly the same behavour. Both via wifi using the Arduino IDE or local from the Omega2:

root@Omega-5923:~# sh /usr/bin/arduino-dock flash /root/blink2.ino.hex
> Flashing application '/root/blink2.ino.hex' ...
device         : /dev/i2c-0       (address: 0x29)
version        : �������� (sig: 0xff 0xff 0xff => unknown)
flash size     : 0xffff / 65535   (0xff bytes/page)
eeprom size    : 0xffff / 65535
writing flash  : [                                                  w�Z] (0)
failed to write to device
> Done

Andre Courchesne

Ok, got it to work !

cd /root
opkg remove arduino-dock
opkg remove arduino-dock-2
opkg remove avrdude
wget http://repo.onion.io/omega2/packages/onion/avrdude_6.1-1_mipsel_24kc.ipk
opkg install avrdude_6.1-1_mipsel_24kc.ipk
opkg install arduino-dock-2

Then you can use the sh /usr/bin/arduino-dock flash my_file.hex

Do not use avrdude v6.3-1 as there is a known issue (https://savannah.nongnu.org/bugs/?func=detailitem&item_id=49450)

Cesar Vargas

@Andre-Courchesne Awesome!! Thanks for your update!

edit: sweet, looks like the dock does work out of the box, once I run through your steps to downgrade avrdude things go a bit more smoothly.

Though flashing the bootloader still fails, but at least I can start flashing other things to it. Thanks again!

 root@Omega-76C7:~# sh /usr/bin/arduino-dock flash bootloader
 > Flashing application 'bootloader' ...

 avrdude: AVR device initialized and ready to accept instructions

 Reading | ################################################## | 100% 0.01s

 avrdude: Device signature = 0x1e950f
 avrdude: erasing chip
 avrdude: reading input file "0x3f"
 avrdude: writing lock (1 bytes):

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

 avrdude: 1 bytes of lock written
 avrdude: verifying lock memory against 0x3f:
 avrdude: load data lock data from input file 0x3f:
 avrdude: input file 0x3f contains 1 bytes
 avrdude: reading on-chip lock data:

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

 avrdude: verifying ...
 avrdude: 1 bytes of lock verified
 avrdude: reading input file "0x05"
 avrdude: writing efuse (1 bytes):

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

 avrdude: 1 bytes of efuse written
 avrdude: verifying efuse memory against 0x05:
 avrdude: load data efuse data from input file 0x05:
 avrdude: input file 0x05 contains 1 bytes
 avrdude: reading on-chip efuse data:

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

 avrdude: verifying ...
 avrdude: 1 bytes of efuse verified
 avrdude: reading input file "0xDA"
 avrdude: writing hfuse (1 bytes):
 
 Writing | ################################################## | 100% 0.00s

 avrdude: 1 bytes of hfuse written
 avrdude: verifying hfuse memory against 0xDA:
 avrdude: load data hfuse data from input file 0xDA:
 avrdude: input file 0xDA contains 1 bytes
 avrdude: reading on-chip hfuse data:

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

 avrdude: verifying ...
 avrdude: 1 bytes of hfuse verified
 avrdude: reading input file "0xFF"
 avrdude: writing lfuse (1 bytes):

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

 avrdude: 1 bytes of lfuse written
 avrdude: verifying lfuse memory against 0xFF:
 avrdude: load data lfuse data from input file 0xFF:
 avrdude: input file 0xFF contains 1 bytes
 avrdude: reading on-chip lfuse data:

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

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

 avrdude done.  Thank you.


 avrdude: AVR device initialized and ready to accept instructions

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

 avrdude: Device signature = 0x1e950f
 avrdude: NOTE: "flash" memory has been specified, an erase cycle will be performed
     To disable this feature, specify the -D option.
 avrdude: erasing chip
 avrdude: reading input file "bootloader"
 avrdude: error opening bootloader: No such file or directory
 avrdude: input file bootloader auto detected as invalid format
 avrdude: cant open input file bootloader: No such file or directory
 avrdude: read from file 'bootloader' failed

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

 avrdude done.  Thank you.

 > ERROR, flash NOT successful`

Andre Courchesne

@Cesar-Vargas Glad it helped.

One note, do not update opkg, doing so seems to make it loose the repo.onion.io/omega2 repo. I have to confirm but looks like it.

I'll add this to my review blog of the Omega2: http://net-forces.blogspot.ca/2017/01/omega2-with-arduino-dock2-review.html

Andre Courchesne

@Cesar-Vargas Looking at the code of /usr/bin/arduino-dock in the arduino-dock-2 package it looks like the flash bootloader command is not supported. The code actually tried to open a file called bootloader as your hex file to upload.

Kostiantyn Tarasenko

Is there any progress on serial-port-bridge for arduino dock 2 ?
Edit: found some info in the wiki page https://docs.onion.io/omega2-docs/arduino-dock.html

Cesar Vargas

@Andre-Courchesne I kinda wish I'd gotten my later as I have already done the opkg update when I was trying to get things running.

Maybe I'll need to do a factory reset and start fresh.

BTW, nice review! I was under the impression I had to flash onion's bootloader in order for it to be seen by the Arduino IDE wirelessly, but it seems like that isn't the case?

Andre Courchesne

@Cesar-Vargas I did not have to flash the bootloader in my case.

Andre Courchesne

@Kostiantyn-Tarasenko

It's probably possible to do it using socat. Probably something simitar to this: http://www.acmesystems.it/socat

I have done this in the past on other system, I'll try to think on trying it out.

Kostiantyn Tarasenko

@Andre-Courchesne it's even more simple, I used pyserial and this tutorial to start up http://playground.arduino.cc/interfacing/python
Port is /dev/ttyS1 for me

Kostiantyn Tarasenko

Even better, Blynk server runs smooth on Omega2 with socat - blynk widgets on the phone could access adruino pins.

Michael Xie48

Hi all,

There will be an official guide for using the Arduino Dock 2 coming soon.

For now, flashing the Arduino Dock 2 can done simply by installing the arduino-dock-2 package on the Omega2:

opkg update
opkg install arduino-dock-2

Now you can flash the ATmega on the Arduino Dock 2 with the Omega and Arduino IDE similar to an UNO (You DON'T need to flash any bootloader or include any Onion library):

Have the Omega2 plugged into the Dock
Install the Arduino IDE: https://www.arduino.cc/en/main/software
On the Arduino IDE: set Tools > Boards: Arduino/Genuino Uno
Tools > Port: "Omega-XXXX at 192.168.3.1 (Arduino/Genuino Uno)"
Upload your program

If you don't see your Omega2 on the port try:

Restarting the avahi-daemon on your Omega2

/etc/init.d/avahi-daemon restart
Restart the Arduino IDE

You can use communicate between the Omega2 and ATmega through UART1 /dev/ttyS1
The Omega2 can be used as the Serial Monitor by:
cat < /dev/ttyS1

Michael Xie48

On the Arduino dock 2, GPIO 19 of Omega2 is connected to the MCU_RESET circuit for software resetting the ATmega. Therefore, the 19 on the Expansion Header is grounded and should not be used for anything but ground. In addition, GPIO 19 on the Omega2 should be kept LOW or it will keep on resetting the MCU.

James Behrens

@Kostiantyn-Tarasenko

I have an Omega2plus and an Arduino dock v2. I have installed avrdude 6.1 and arduino-dock-2. I am unable to program the Atmega328 from the Omega2. I can attach a USBasp dongle to the arduino dock's six pin header and program the Atmega328, but cannot program it using the Omega2. I have followed what others have posted without success. When I open the arduino ide, select Tools, Board: Arduino/Genuino Uno the port does not change and no options for anything other than Port1 are displayed. What do I have to do to get the Omega2 to show up as a port (I tried restarting the daemon, does not work). Also, where in the Omega2's file system is the bootloader located and what is it's name ? I ask because using generic 'bootloader' comes back with no file found. The fuses were set, but no file named 'bootloader' could be found. BTW I am not an Arduino newbie. I am a Linux newbie, but learning.

On another note, I am very disappointed to receive the Omega2+ that I ordered, only to find out that the SD card slot that I paid extra for is non-functional and has no set date when it will be. Shame on Onion for selling vaporware.

Lazar Demin

@James-Behrens please see this post regarding the SD card: https://community.onion.io/topic/1282/omega2-reboot-and-sd-card-fixed
The SD card issue has been fixed. Onion has no intention of selling vaporware, not now, not ever. We have a track record of keeping all of our promises, we're a young company and still learning how to keep to our timelines. We appreciate everyone's patience and support as we're really trying to bring a useful product to the end users.

Please see the full Arduino Dock documentaiton for all of the steps: https://docs.onion.io/omega2-docs/flash-arduino-dock-wirelessly.html
You might have missed modifying the Arduino IDE boards.txt file, without this modification, the Arduino Dock will not show up as a port.
Also please make sure you're running avrdude v6.1-1, try running opkg list-installed | grep avrude to find the version info.

Not sure which bootloader you're trying to find on the Omega's filesystem?

David Wickenden

I have an Omega2plus 0.1.7 b139 and an Arduino dock v2 0.1-1. I have installed avrdude 6.1-1 and modified the boards.txt. Even running opkg list-installed and find it still there. What ever I do today as it was working well yesterday between Onion Omega and Arduino IDE but not today, what going on?
Found it sometime worked most of the time don't work, think it the antenna kinda hit and miss depend how you place it. If it don't work move it somewhere not too far from the spot. Anyway you try.