I'm wondering if there is some "magic" to Mega128P-Xplained that I must be missing?
I've got a box full of goodies that Atmel has sent me at various times and I was just rummaging through to see if there was anything that would meet a requirement I had. I came across a brand new, boxed Mega1284P-Xplained and because it's got a lot of IO and appears to be designed to work at 3V3 I thought it would fit the bill. But can I get the bloody thing to talk?
This is a very old Xplained design - it does not have a debugger on board - just a UC3 acting as a USB-serial bridge. The actual programming is via a bootloader already in the 1284P. It apparently has an AVR911 bootloader installed.
The original book talks about using Atmel's AVROSP programming tool to drive it at the PC end but from what I can gather in the source code it appears to need XML ParDescriptionFiles from an AS4 installation (I said it was old!) and I don't want to have to install AS4 simply to get the XMLs.
So next thought was to try avrdude. It is supposed to support "-p avr911" to speak the language of the 1284 bootloader.
But I just cannot get the two things to chat.
Before I give in and blast the bootloader with an Atmel ICE (thanks again Atmel and the "goodie box"!) does anyone know if there is some magic to getting this thing to talk?
(and yeah I have messed around with "mode com6 baud=57600" and all the other magic they suggest - but none of that helped so far.)