Hi Ingo, It's not clear to me which parts of your setup are hardware MIDI and which are hardware serial, so this may be not relevant: MIDI uses the same serial protocol as regular serial, the difference is the baud rate (31250 is not a standard baud rate) At the hardware level, MIDI is optoisolated and works as a current loop. At the Pd end, MIDI messages are handled completely separately from whatever [comport] is doing, so you have to 'manually' reconstruct MIDI from a serial stream (as with [midifile], which also doesn't integrate with Pd's MIDI sytsem, as MIDI is being handled at the driver level, and uses a different software interface).
So if your baud rate on the Arduino is 31250, at the minimum you need [comport] to be running at 31250 s well, which is not usually possible. It's easier to use a MIDI interface on the computer and send MIDI from the arduino directly. This can be done using 2 220 Ohm resistors and a DIN-5 connector. Martin On Mon, Mar 22, 2021 at 4:13 AM Ingo <[email protected]> wrote: > > Hi, > > I would like to send MIDI with [comport] from Pd by using an Arduino. > > Reading into Pd is no problem. > It also works fine as a MIDI Thru by simply forwarding the Serial1 RX input > (MIDI input) to the Serial1 TX output (MIDI Thru). > Something like this: > > if (Serial1.available() > 0) { > Serial1.write(Serial1.read()); > } > > (The loop duration is only about 250 盜 so there is no timing problem in > this case. > For data coming in faster than the loop duration I would probably have to > read into an arry first.) > > > However, if I'm sending a MIDI message from Pd it's not recognized by the > connected MIDI interface. > I'm assuming that's probably because there is no startbit and stopbit that > the MIDI interface is looking for. > > According to the helpfile I can send a stopbit with [comport] but I didn't > find anything about a startbit. > > Is there a possibility within Pd and [comport] to send a startbit or would > it make more sense to add the startbit and stopbit within the Arduino > programming? > > Thanks! > Ingo > > > > > > _______________________________________________ > [email protected] mailing list > UNSUBSCRIBE and account-management -> > https://lists.puredata.info/listinfo/pd-list _______________________________________________ [email protected] mailing list UNSUBSCRIBE and account-management -> https://lists.puredata.info/listinfo/pd-list
