[sdiy] PIC Baudrate Converter (Correction)

[Scott Gravenhorst]

Sorry, mistakes were made...

music.maker at gte.net wrote:
[snip]
>standard MIDI device *must* receive and
>transmit at 32.25 kilobaud.  

I meant 31.25 kilobaud.

>
>I don't have code to offer, but I can imagine it would be fairly easy
>to do, since the interface between the serial port drivers is
>incredibly simple, no MIDI protocol has to be considered, simply pass
>the bytes.  The speed differential is the only issue; I would code to
>run all ports from interrupts.  The lower speed transmitter would need
>a ring buffer from which to take data since bytes could arrive from the
>computer faster than MIDI rate; those incoming bytes would be stored
>while the MIDI UART is transmitting.  (BTW, running that side at a baud
>rate close to MIDI, as she has spec'd is one thing that limits the
>required size of the ring buffer.)  The other side may not need a
>buffer at all if the PIC is fast enough to process it's byte (not much
>here: simply stuff it in the MIDI side transmitter buffer) which it
                              ^^^^
                                \______  I meant high speed side.


[snip]

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