TheBackShed.com

Forum Index : Microcontroller and PC projects : CMM2 MIDI Player

Author

Message

PilotPirx

Regular Member

Joined: 03/11/2020
Location: Germany
Posts: 95

Posted: 07:25pm 08 May 2025

Copy link to clipboard

Print this post

I've finished my midiplayer so far. It plays MIDI files in file format 0 (one track). If there are several tracks in the MIDI-file (format 1), it plays them one after the other. I have included three MIDI examples with format 0.

If you have MIDI files in which the instruments are spread over several tracks, you can convert them to format 0 using tools (e.g. Anvil Studio - free of charge).

The program "PMFV10.bas" (PlayMidiFileV10) requires a MIDI synthesizer on COM2, e.g. the SAM2695.
The program is still under development. Improvements are welcome. I am not a software developer, so forgive me for the unprofessional programming.

Usage:
run "PMFV10.bas",yourmidifile.mid

Have fun!
CMM2_MIDIPlayerV10.zip
Edited 2025-05-09 05:28 by PilotPirx

Frank N. Furter
Guru

Joined: 28/05/2012
Location: Germany
Posts: 936

Posted: 07:15am 09 May 2025

Copy link to clipboard

Print this post

Hi PilotPirx,

that looks quite interesting - can you also connect a “normal” synthesizer to it?

Frank

PilotPirx

Regular Member

Joined: 03/11/2020
Location: Germany
Posts: 95

Posted: 07:25pm 09 May 2025

Copy link to clipboard

Print this post

Hi Fran N. Furter,
this should be no problem. It's an normal serial MIDI output with 31250Baud.
You only need a Midi Interface, an arduino midi shield for example.
Example MIDI Out (5V):

Peter63
Regular Member

Joined: 28/07/2017
Location: Sweden
Posts: 45

Posted: 04:21am 10 May 2025

Copy link to clipboard

Print this post

Hi, PilotPirx
I have thoughts about making a MIDI sequencer program for PicoMite. I quickly looked through the code you wrote, and it is not completely unprofessional (good job). I don't have a CMM2. Has anyone tested this on PicoMite MMBasic?

Peter

Peter63
Regular Member

Joined: 28/07/2017
Location: Sweden
Posts: 45

Posted: 06:36am 10 May 2025

Copy link to clipboard

Print this post

Hi, PilotPirx
I tried the program on PicoMiteVGA MMBasic USB RP2040 Edition V6.00.02RC10, it worked with a slight modification from COM2 to COM1 MIDI port. I only tested the MIDI file "AxelF.mid", where channel 0 was a bit out of sync, probably due to two notes being played simultaneously on the same channel. Otherwise, it worked completely fine, great job again, I'm happy.

Peter

Print this page

To reply to this topic, you need to log in.