Parallax Propeller plays our classic MIDI tunes from the SD-Card!
Already have an account? Log in.
To make the experience fit your profile, pick a username and tell us what interests you.
This is a follow-up from the earlier "Propeller Weekender" project: https://hackaday.io/project/167189-propeller-weekender-sd-card-experimentation
With the SD-Card working, it's time to test it with this little MIDI file player! Will it work? Should it need some more improvements? :)
Note: MIDI format 0 only supported!
gm_test.zipMusic Synth. Object by Andy Schenk. Some parts of the code modified to print onto the UART instead of a TV screen.application/x-zip-compressed - 45.18 kB - 09/01/2019 at 14:23 |
|
After testing the SD-Card object and worked very good the first time, I compiled this MIDI player by Andy Schenk ("Ariba" in the Propeller Forums). And I have loaded the "NUTRAC.MID" [MIDI format 0 only!] into the SD-Card as a test.
I have changed some of the code to print the messages onto the UART instead of the TV screen. Pins 0 and 1 are to the speaker, and what he had recommended was this configuration:
Unfortunately, the sound was barely audible. I stuck that 4ohm speaker to my ear (hopefully it didn't scream and break my eardrums!) and I could hear that tiny sound. Obviously, this needs amplification - I'm gonna figure out how to do this effectively!
YH-workshop
borazslo
re4mat
Antti Lukats
Pete Prodoehl