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October 13, 2008
about 8 years ago
Is anybody else having trouble flashing a custom firmware onto these?
I'm hoping to use it with an RFID reader, and was hoping to alter the firmware to do the talking to the RFID module and add to the serial protocol.
I've got two brand-new boards, and whenever I try to flash them using the code I managed to download, it compiles just fine and I get
avrdud: stk500_recv(): programmer is not responding
The device seems to be rebooting just fine, although it might be skipping the bootloader (or the programming cycle is not catching it). I've tried two devices and two FTDI breakouts, and I've tried swapping the RX/TX pins on the FTDI just in case there's confusion about that.
Any ideas? Is there a baud-rate mismatch or are things just a bit flaky?
about 10 years ago
I've simply not been able to get one of these programmed, either via Serial (using a Sparkfun FTDI) or ICSP (Using ArduinoISP), while it is on a breadboard: I seem to be continually getting variations of the different sync errors mentioned here and all over the Internet. I've tried with the resonators and crystals sold below.
I can, however, program it via Serial when I put it into a Duemilanove, and when I do that and then put it into my breadboard setup, it seems to function (including the Serial output demo, so I know that I can communicate with it).
I'd really like to be able to program it in-place, either over serial or in-circuit. And once I move from a breadboard to an actual board, I'd like to be able to update the software as well.
Does anyone have any suggestions on getting this thing programmed outside of an existing Arduino?
No public wish lists :(