I have an AT91SAM7SE-EK, and a new board of our own design. I can successfully program both boards using SAM-PROG.
I also have a ULINK (not ULINK2). I can program my code onto the eval kit using the ULINK, but on our own board I get a different error almost every time. The error is usually "Flash Timeout" or "Cannot Load Flash Programming Algorithm".
Our own board has the same micro as the EK, but running at 1.8V, not 3.3V. (For system reasons, our micro has to remain at 1.8V - I can't alter it.)
Q1: Is the ULINK designed to work with micros running at 1.8V?
Q2: If yes to Q1, is there anything special I have to do to make it work at 1.8V?
Q3: If no to Q1, would a ULINK2 solve the problem?
First check the VCC jumper setting inside ULINK. You need to set the jumper to ARM position (target hardware provides VCC to JTAG interface) otherwise the internal 3.3V power supply will be used. The same applies for ULINK2.
Thanks Robert,
I'd never opened the ULINK up, and didn't know about that jumper. It turns out it was in the right place already, but your suggestion put me on the right track.
The problem was our VCC line to the JTAG was 3V3. Changing it to 1V8 did the trick, and it all works perfectly now.
Thanks again, Paul.