Analogue-sequencer

In-Reply-To: <000801c3ed01$51993090$152ca8c0@ZEN>

> Keith I had a thought which I hope doesn't mean you've wasted your time
> messing about with the opto-isolator, but you don't have the P3 wired up
> to your PC, and MidiOx set up so that P3's response to the firmware
> sysex block is being fed back through to it's input again ? I've just
> checked out how that will respond, and it programs correctly, but does
> give a BAD DATA! warning when it sees it's own handshake come back (it's
> not expecting to shake hands with itself...)
> I think you would probably notice the midi loop in this case - unless
> you're only connecting P3 up to the PC when flashing.


Dear Colin, Midi-ox is completely new to me, I just tried flashing with 
onlyone midi lead connected, I was assuming some sort of handshaking was 
required.

I got no bad data at all! the display was flashing between something I 
couldn'tmake out and PGM OK @ nnnn
So it's my own silly mistake and I apologise for any time wasting.

 
> Hmm... Thank you Olimex. Sorry about that.
> I'd check it with a multimeter to confirm if it is a short.
> I'm told by various people that the makers of the second run do a lot
> better on quality.

It is a short and i shall remove it, it may account for a few oddities I 
may havebeen experiencing but that is probably down to me being confused.


> Once you get it fixed ;-)
> (the prize is a working P3)

And what a prize!
Paul blew me away with it when he took me through it all last weekend.

Many thanks for all your help.

cheers


Keith

http://home.freeuk.net/lowpass