Post by vaultnaemsae on Jun 25, 2023 15:40:24 GMT
Hi, Hope somebody can help me with checksum calculations for SYSEX commands.
I'm using a rule to convert a dynamic CC value (0-127) from an expression pedal (CC#1/Ch.1) to a dynamic SYSEX command. It's actually cloning the Roland FC-300 expression pedal 1's standard output -- long story, don't ask!
EXP1 SYSEX: F0 41 00 00 00 20 12 24 00 [XX] [YY] F7 ......XX is the current value of the pedal (0-127) and YY is the checksum (though I'm not sure how this works).
I've successfully converted everything except the checksum (based on another forum post):
RULE:
IF M0 == B0 01
SND F0 41 00 00 00 20 12 24 00 M2 F7
END
*There should be a checksum byte between M2 and F7...
Can anybody please explain to me how to do the checksum part?
Thanks in advance
FWIW, I searched "Roland Checksum" here and the results were overwhelming. I thought it might be a simple solution.
I'm using a rule to convert a dynamic CC value (0-127) from an expression pedal (CC#1/Ch.1) to a dynamic SYSEX command. It's actually cloning the Roland FC-300 expression pedal 1's standard output -- long story, don't ask!
EXP1 SYSEX: F0 41 00 00 00 20 12 24 00 [XX] [YY] F7 ......XX is the current value of the pedal (0-127) and YY is the checksum (though I'm not sure how this works).
I've successfully converted everything except the checksum (based on another forum post):
RULE:
IF M0 == B0 01
SND F0 41 00 00 00 20 12 24 00 M2 F7
END
*There should be a checksum byte between M2 and F7...
Can anybody please explain to me how to do the checksum part?
Thanks in advance
FWIW, I searched "Roland Checksum" here and the results were overwhelming. I thought it might be a simple solution.
