Firmware Upgrade fails again and again

[dmitri]

I didn't test a usb to midi cable. But I think this will be my next step.

Test it over standard MIDI ports and then come back with the results.

[Ken Forgettable]

3. Under "Options" --> "Midi Devices" I select Megadrum USB as Midi Output

Make sure there is no Midi Input device selected.

[Tormentor]

So, received my midi cable and din5 sockets today. It's an usb to midi cable, because I haven't a 15 D-sub socket to connect a "normal" midi cable.

I soldered up "Midi IN", mentioned in "lcd midi controls-sch.pdf" and connected it to the board. Then I connected "Midi OUT" from the Midi Cable to Megadrum and then I followed the usual procedure, except that I chose the midi cable instead of megadrum in MIDIOX options menu.

The LED is still not flashing. So, is it possible, that the Atmega is broken up??

Thanks

[dmitri]

So, received my midi cable and din5 sockets today. It's an usb to midi cable, because I haven't a 15 D-sub socket to connect a "normal" midi cable.

I soldered up "Midi IN", mentioned in "lcd midi controls-sch.pdf" and connected it to the board. Then I connected "Midi OUT" from the Midi Cable to Megadrum and then I followed the usual procedure, except that I chose the midi cable instead of megadrum in MIDIOX options menu.

The LED is still not flashing. So, is it possible, that the Atmega is broken up??

Thanks

I very much doubt it. If it gets to the point that it shows 'ERASED' on the LCD then it is able, at least for 4 bytes, receive data correctly. Most likely you made a mistake somewhere configuring MIDI-OX, e.g. instead of setting Output Buffers Size to 60000 you set Output Buffers Num to 60000 or you set Size to 600 or 6000 instead of 60000.

[Tormentor]

Dmitri,

I don't know what to say. After many failed tests over USB and now also over the midi cable, I gave it a last chance. I connected Megadrum to usb, flashed the "erase" firmware and now SUCCESSFULLY flashed the latest firmware. I have really no idea why it failed so often and now without problems. I did not change anything in the options.

Thank you for your help