Arduino yun

Upgrading an Arduino Yun

background

Essentially the task I'm documenting is outlined here: http://linino.org/doku.php?id=wiki:upgradetolininoio

But I'm adding a bit of background that I was missing since this is my first exposure to the Yun. See? I didn't even spell it with the proper accent over the U.

I'm pleased that the Yun has such good documentation:

• http://arduino.cc/en/Guide/ArduinoYun#toc6
• http://playground.arduino.cc/Hardware/Yun#restoring_a_yun

I didn't end up using this sketch, but it included some nice hints about using the stock Serial Terminal in the Arduino IDE

• http://arduino.cc/en/Tutorial/YunSerialTerminal

This was the most succinct and useful documentation I found on setting up the tftpd server that is needed for the upgrade

http://www.df.lth.se/~triad/krad/tftpserver.html

environment

• I'm using a Fedora 20 system connected via usb to provide power and access to serial terminal
• The Yun is connected via wired ethernet to a network with a dhcp server providing IP config
• I have an apache server providing binaries for download to the Yun
• I have a tftp server providing binaries for download to the Yun
• I have installed the version of the Arduino IDE that is new enough to support the Yun

prep the Yun

• boot the Yun, that is provide power
• log in via ssh. I have yun in my /etc/hosts with the IP address provided by dhcp. I'll be doing several of these boards and each time the image changes, the host id changes, so let's not fiddle with those. The default password is doghunter.

ssh -o UserKnownHostsFile=/dev/null -o StrictHostKeyChecking=no root@yun

• download the latest serial terminal to the Yun

root@j17:~# cd /tmp
root@j17:/tmp# wget http://download.linino.org/pkg-bin/serialTerminal.hex
Connecting to download.linino.org (88.198.63.58:80)
serialTerminal.hex   100% |*******************************| 17420   0:00:00 ETA

• install the latest serial terminal on the Yun

root@j17:/tmp# run-avrdude /tmp/serialTerminal.hex

avrdude: AVR device initialized and ready to accept instructions

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

avrdude: Device signature = 0x1e9587
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 "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: reading input file "0xD8"
avrdude: writing hfuse (1 bytes):

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

avrdude: 1 bytes of hfuse written
avrdude: verifying hfuse memory against 0xD8:
avrdude: load data hfuse data from input file 0xD8:
avrdude: input file 0xD8 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 "0xFB"
avrdude: writing efuse (1 bytes):

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

avrdude: 1 bytes of efuse written
avrdude: verifying efuse memory against 0xFB:
avrdude: load data efuse data from input file 0xFB:
avrdude: input file 0xFB 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 "/tmp/serialTerminal.hex"
avrdude: writing flash (6188 bytes):

Writing | ################################################## | 100% 3.61s

avrdude: 6188 bytes of flash written
avrdude: verifying flash memory against /tmp/serialTerminal.hex:
avrdude: load data flash data from input file /tmp/serialTerminal.hex:
avrdude: input file /tmp/serialTerminal.hex contains 6188 bytes
avrdude: reading on-chip flash data:

Reading | ################################################## | 100% 3.37s

avrdude: verifying ...
avrdude: 6188 bytes of flash verified

avrdude: safemode: Fuses OK

avrdude done.  Thank you.