bug: sysexrx_cb does not parse incoming (rx) sysex data

[kkerti]

Repro:

1. Use an app to send sysex data to Grid (macOS: https://www.snoize.com/SysExLibrarian/)

2. Use attached zip syx for reference
   setmidichannel2.syx.zip

3. Add code to module:

self.sysexrx_cb = function(self, sysex, grid_headers)
    print("trigger")
end

4. "trigger" is not visible in debug logs

Expectation

self.sysexrx_cb should show the sysex data.

Considerations

Format the incoming hex data to integers. https://stackoverflow.com/questions/37411564/hex-to-int32-value

[foxxyz]

Just wanted to add a note that I was able to reproduce this as follows:

I'm sending the (sysex) message 0xf0411000f7, and the MIDI monitor on the left is showing that the device is indeed receiving these messages, but they are not showing in the "System Exclusive Messages" area, and the self.sysexrx_cb callback isn't firing. Instead, the self.midirx_cb callback is firing with a partial message (it seems like).

Thanks for checking into it!