I am trying to upload to an Arduino UNO using a Digi One SP serial server (IP to serial)(www.digi.com) connected to an RS-232 to TTL converter. The purpose is to be able to make changes to the software of the arduino uno in the field via an Ethernet connection. I have been able to recieve serial outputs from the arduino uno with several different sketches loaded. The problem is at the very end of the upload process when the Arduino IDE sends the compiled sketch to the arduino UNO I get an out of sync error as if the arduino uno is not connected.
I am not sure what response the IDE is needing to finish the data transfer. Anyone have any ideas
what I need to do.
Thanks
In the IDE, select File:Preferences and turn on Verbose Outputs.
Upload to a standard board and see what kind of messages occur.
The problem may just be the Uno is not seeing a Reset to kickoff the bootloader.
Try press & hold Reset, and when the IDE shows "compiled xxx of 32xxx bytes", release reset.
May take a few tries to get the timing right.