[sdiy] Weird JX3P midi behavior

[Adam Inglis]

Sounds like a problem reading the keyboard matrix, but that still  
doesn't really explain the midi STOP and CLOCK messages you're getting  
- the midi spec for the JX3P does not include these at all! Very  
strange...

Adam
On 27/11/2012, at 10:08 AM, Travis Thatcher wrote:

> Hi Florian,
>
> I finally got back home and opened up my JX3P for further testing.  I
> tried all functions without the programmer hooked up and all worked,
> as well a switches/led's. Every panel seemed accessible. I checked to
> see if the switch was working by trying to write to the seq (it only
> works in the appropriate programmer mode). I also put an led on the RX
> test pin on the main board, with a current limiting resistor going to
> +5v. When I sent midi input into the jx the led lit up so it appears
> the opto coupler is functioning as it should. Again, when not switched
> to midi position the LED did not light.  Midi Thru does work.
>
> I did another test looking at the midi output of the jx in midi mode
> using MIDI Monitor. Here is what the output was when one note was
> pressed (first line of output generated) then released
>
> 15:36:25.754	From MIDI Port	Note On	1	D4	1
> 15:36:25.802	From MIDI Port	Note On	1	D4	1
> 15:36:25.803	From MIDI Port	Stop		
> 15:36:25.804	From MIDI Port	Invalid		1 bytes
> 15:36:25.804	From MIDI Port	Clock		
>
> Any ideas on what to check next?
> T
>
> On Thu, Nov 8, 2012 at 10:15 AM, Florian Anwander
> <fanwander at mnet-online.de> wrote:
>> Hello Travis
>>
>>
>>> 1. Midi out - note on events are only firing when you let up a  
>>> key. No
>>> note off events are happening and nothing happens when you depress a
>>> key, only when you let off.
>>
>> Hmm, do the switches and LEDs on the panel work, as they should?  
>> Can you
>> edit every parameter from the panel? (disconnect the programmer for  
>> this
>> test!).
>>
>>
>>
>>> 2. Midi in - not responding at all to midi input
>>
>> Memory protect switch in the wrong position or broken.
>>
>> Florian
>>
>> --
>> http://fa.utfs.org/
>
>
>
> -- 
> http://www.travisthatcher.com
> http://www.soundcloud.com/travisthatcher
> http://voiceofsaturn.blogspot.com
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