[Bug 1979] New: Milkymist: Handle MIDI framing in the interrupt handler

[bugzilla-daemon at rtems.org]

https://www.rtems.org/bugzilla/show_bug.cgi?id=1979

           Summary: Milkymist: Handle MIDI framing in the interrupt
                    handler
           Product: RTEMS
           Version: HEAD
          Platform: lm32
        OS/Version: RTEMS
            Status: NEW
          Severity: normal
          Priority: P3
         Component: bsps
        AssignedTo: joel.sherrill at oarcorp.com
        ReportedBy: seb at tmplab.org


Created attachment 1386
  --> https://www.rtems.org/bugzilla/attachment.cgi?id=1386
patch

This patch moves MIDI message detection from higher layers to the MIDI
interrupt handler. This way, MIDI receivers only need to wake up once
per complete message and not for every single byte.

The /dev/midi queue size is changed from 64 bytes to 32 messages
(typically 3 bytes each).

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