Send MIDI Sysex message from script (actions)

[Viktor_S]

Could you please advise what is the best way to send MIDI Sysex message from script (actions) to external MIDI device?

Sysex MIDI message is

'F0 21 25 7F 47 50 2D 64 12 11 00 00 02 07 09 00 00 F7'

.

If I send it from MIDI editor everything works fine. But following command doesn't work in a proper way.

reaper.SendMIDIMessageToHardware(8, 'F0 21 25 7F 47 50 2D 64 12 11 00 00 02 07 09 00 00 F7')

I was trying following as well

reaper.SendMIDIMessageToHardware(8, '0xF0, 0x21, 0x25, 0x7F, 0x47, 0x50, 0x2D, 0x64, 0x12, 0x11, 0x00, 0x00, 0x02, 0x07, 0x09, 0x00, 0x00, 0xF7')

8 is device number in a MIDI out list.

[mpl]

you have to send binary string, not regular

[Viktor_S]

Originally Posted by mpl

you have to send binary string, not regular

Thanks for your replay. Please tell me if I understand correctly that by a binary string you mean something like

'11110000 00100001 00100101 01111111 01000111 01010000 00101101 01100100 00010010 00010001 00000000 00000000 00000010 00000111 00000110 00000000 00000000 11110111'

[mpl]

SysEx_msg = 'F0 21 25 7F 47 50 2D 64 12 11 00 00 02 07 09 00 00 F7'
SysEx_msg_bin = '' for hex in SysEx_msg:gmatch('[A-F,0-9]+') do SysEx_msg_bin = SysEx_msg_bin..string.char(tonumber(hex, 16)) end
reaper.SendMIDIMessageToHardware(HW_dev_outID, SysEx_msg_bin)

[Viktor_S]

Originally Posted by mpl

SysEx_msg = 'F0 21 25 7F 47 50 2D 64 12 11 00 00 02 07 09 00 00 F7'
SysEx_msg_bin = '' for hex in SysEx_msg:gmatch('[A-F,0-9]+') do SysEx_msg_bin = SysEx_msg_bin..string.char(tonumber(hex, 16)) end
reaper.SendMIDIMessageToHardware(HW_dev_outID, SysEx_msg_bin)

Thank you very much! You helped me a lot.

[JamesX]

Originally Posted by mpl

you have to send binary string, not regular

mpl,

Thanks for the script. Wonderful...

[Viktor_S]

I believe that this script should be somehow fixed and highlighted in the API description.

[schwa]

Another way to do it:

sysex = { 0xF0, 0x41, 0x10, 0x00, 0x00, 0x00, 0x05, 0x12, 0x20, 0x00, 0x40, 0x02, 0x18, 0x06, 0xF7 }
msg=''
for i=1, #sysex do msg = msg .. string.char(sysex[i]) end
deviceid=0
reaper.SendMIDIMessageToHardware(deviceid, msg)

[FeedTheCat]

Also useful in this context is that string.char can take multiple arguments. If one can avoid using tables, this is very fast and elegant:

msg = string.char(0xF0, 0x41, 0x10, 0x00, 0x00, 0x00, 0x05, 0x12, 0x20, 0x00, 0x40, 0x02, 0x18, 0x06, 0xF7)
deviceid = 0
reaper.SendMIDIMessageToHardware(deviceid, msg)

Alternatively it also works when a table is given:

sysex = {0xF0, 0x41, 0x10, 0x00, 0x00, 0x00, 0x05, 0x12, 0x20, 0x00, 0x40, 0x02, 0x18, 0x06, 0xF7}
deviceid = 0
reaper.SendMIDIMessageToHardware(deviceid, string.char(table.unpack(sysex)))

[Kickaxe]

I'm using reaper.SendMIDIMessageToHardware(deviceid, msg) to send a sysex request message to query a setting on my midi device. This works great but I can't figure out how to receive the sysex feedback message from my midi device. I know my sysex command works as I also sent it via Bome SendFX and Bome did receive the correct feedback. I just don't know how to get the feedback message back into my lua script. Any help would be greatly appreciated? Regards,

[mschnell]

maybe ReaPack -> Midi CC to SysEx

[Meo-Ada Mespotine]

Added this thread to the Reaper Internals-Thread post that lists useful resources in the forum, so it doesn't get lost to time.