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#avrdude-scp

A shell script wrapper for avrdude and scp that automates the steps to copy a compiled .hex file to a remote machine and upload it to an Arduino / AVR attached to that machine. Useful for upadating code on Arduinos attached to OpenWrt routers, Raspberry Pis or any other *nix machine.

The remaining avrdude functionality, should work too.

Requirements

  • SSH access to remote machine
  • avrdude installed on remote machine
  • Arduino / AVR microcontroller attached to remote machine
  • Compiled .hex file on local machine

Usage

Works just like avrdude except the -P option can take an 'scp-style' path like user@host:/dev/device_to_flash.

A --retry N option can be given to avrdude-scp to retry the requested command N times before giving up and deleting the image from the remote host.

Additional commands can be run before and after executing avrdude with the --pre and --post options. Several commands can be executed if they are separated by a semicolon. This can be used to stop and restart processes communicating with the microcontroller through the programmers serial port.

Examples

Upload local file "blink.hex" to an Arduino UNO attached to a Raspberry Pi over the network:

avrdude-scp -V -F -c arduino -p m328p -P pi@raspberry:/dev/ttyACM0 -U flash:w:blink.hex

Dump the flash memory from the remote UNO to a local file, "dump.hex":

avrdude-scp -V -F -c arduino -p m328p -P pi@raspberry:/dev/ttyACM0 -U flash:r:dump.hex:r

Retry the averdude command 3 times, if it fails:

avrdude-scp -V -F -c arduino -p m328p -P pi@raspberry:/dev/ttyACM0 -U flash:w:blink.hex --retry 3

Executing a command on the remote host before and after avrdude:

avrdude-scp -V -F -c arduino -p m328p -P pi@raspberry:/dev/ttyACM0 -U flash:r:dump.hex:r --pre "date; ls -l" --post date

Note: The -U option works with local file paths, not files on the remote machine. The script handles the copying and cleanup.