Re: [Jsynthlib-devel] Making a Patch for Roland Kit on the HPD-15?

[Robert W. <wi...@op...>]

Hello Daniel,
further action depends perhaps on your sysex device implementation.  
If there is a sysex which changes several parameters, then use it.  
Otherwise, there is no other possibility then sending several sysex  
messages at a time. It requires to write your own sendPatch(Patch)  
method. I did the same in my Roland JD800 driver  (JSynthLib/ 
synthdrivers/RolandJD800/RolandJD800SinglePatchDriver.java).,
Robert.


On Dec 22, 2007, at 2:42 AM, Daniel Rosenstark wrote:

> Hello all.
>
> First off, thanks to those who responded to me privately, who  
> probably meant
> to reply to the list. The answer to my last questions were "set the
> checksumOffset, start, and end values." That worked.
>
> So now I've advanced quite a bit in my HelloWorld, and now I have the
> following code
>
>         super.trimSize = 16;
>         super.checksumOffset = 14;
>         super.checksumStart = 6;
>         super.checksumEnd = 13;
>         byte[] first = new byte[] {
>                 (byte)0xF0,                         // It's a MIDI  
> System
> exclusive message!
>                 0x41,                               // Roland ID
>                 0x10,                               // Device ID 17  
> (minus
> one)
>                 0x00,0x2E,                          // Model ID 2E for
> HPD-15
>                 0x12,                               // Command ID  
> (this is
> data set, could be a request 0x11)
>                 0x01,0x00,0x10,0x00,                // the offset  
> for the
> user kit, pad A1
>                 0x00, 0x00, 0x07,12,                // the nibbled  
> data for
> the shekere 124
>                 (byte)0xFF,                         // checksum  
> will go here
>                 (byte)0xF7                          // end
>         };
>
> which works perfectly for ONE parameter change (I'm amazed. I had  
> never
> nibbled before :). But now I want to send an entire kit (pads A1,  
> A2, etc.).
> I've tried the two obvious things, making two sysexs back to back  
> (they get
> trimmed to one, otherwise the checksum would be calculated just  
> once). I've
> also tried putting in more than one offset and data (message was  
> received
> but didn't do the right thing).
>
> I can send more than one sysex message, but I imagine there's a  
> better way.
>
> Thanks in advance for your help!
>
> Best,
> Daniel
>