Help with firmware programming
Hi everybody, I need some help with my AB 1.1.
Today I flashed the latest firmware, and it was all OK, working.
Them I tried again the same operation .... and since then I'm stuck in this situation:
Running batchisp 1.2.5 on Wed May 30 12:44:55 2012
AT32UC3A3256 - USB - USB/DFU
Device selection....................... PASS
Hardware selection..................... PASS
Opening port........................... PASS
Reading Bootloader version............. PASS 1.0.3
Erasing................................ FAIL Could not read from USB device.
(A)bort, (R)etry, (I)gnore ?
Looks like it's impossible to erase the chip.
I found something about such problems on the net, and tried some batchisp
command that demonstrates that the chip is alive, with 1.0.3 bootloader ... but it's impossible to reprogram.
Now the chip is constantly in DFU mode, with led OFF. When I launch the usual batchisp command (that includes a reset), the result is as above, and the LED becomes red ... but the board is actually unrecognized.
If i hit reset, or unplug, I go back to the initial situation (led OFF, board in DFU mode ). What can I do?
Some help would be appreciated!