Re: [Jsynthlib-devel] Help building drivers: first steps

[Christoph E. <ce...@ch...>]

Hi,


still I cannot build JSynthLib from CVS, I guess it is due to the 
addition of jdom.

But anyway I already would like to dive a bit into writing an XML 
driver.

I wonder if I can simply start by creating the directories
org/jsynthlib/jsynthlib/synthdrivers/maudio/midisport8x8/
and copy over the file YamahaMotif.xml as MaudioMidisport8x8.xml.

No I start editing it. The first thing that wonders me is the
<inquiryid>F07E7F06024300417[CDE]040000007FF7</inquiryid><!-- regex -->
from the Yamaha Motif file. Is this the answer awaited *from* the device 
after sending a request or is this the Request to be *sent* to the 
device?

As I did reverse engineer the device, I know the requests to be sent to 
it to retreive its memory contents. But I do *not* know if there is a 
special command to simply ask it "are you connected to the MIDI 
network?". Do I need it? Which data do I need to enter into 
<inquiryid></inquiryid>?

Now the driver part. As I'm not that familiar with the Yamaha Motif, the 
example doesn't help here. So step by step:

The memory of the Midisport 8x8 consists of 1 package of 27 bytes 
containing the global data and 8 packages containing one patchbay 
definition each. There's no checksum at all.

So how to start? I read:

<driver> <!-- should this have another name? -->
    <name>Normal Voice</name>
    <!-- inherit authors? -->
    <banknames>
      <name>User</name>
    </banknames>
    <patchnames>
      <sequence id="patchnums">
       <variable>id</variable>
        <start>0</start>
        <end>127</end>
        <!-- format 0 to A-1, 17 to B-2, etc -->
        <value>"${(char)(65 + id/16)}-${id%16 + 1}"</value>
      </sequence>
    </patchnames>

    <!-- the following are defaults to be inherited by sysex blocks -->
    <decoder type="BE 7bit words" />
    <checksum type="twos complement">
      <start>3</start><!-- byte offset, doesn't include status byte -->
      <end>-2</end>
      <address>-1</address>
    </checksum>

    <patch file="normal_voice.xml" />
    <editor>test2.xml</editor>

    <class>normal_voice.groovy</class>

  </driver>


Sorry, but I really don't know how to translate this for the Midisport 
8x8, so any help would be cool to get me started.


Best regards


ce