Yamaha reface CP: MIDI CC, NRPN and OSC map¶
The Yamaha reface CP as named OSC addresses — 27 CC, 8 SysEx commands — ready to use from Claude (MCP), SuperCollider, Sonic Pi, TouchDesigner or any OSC app via osc-bridge.
| Device | Yamaha reface CP |
|---|---|
| Vendor | Yamaha |
| OSC prefix | /reface_cp |
| Source | 🎛️ Derived from an Electra One community preset |
| Revision | per pencilresearch canonical CSV |
| Upstream | electra-preset |
| Driver file | devices/yamaha/reface_cp.json |
Not tested on the device yet
This driver comes from documentation or community data and has not been checked on real hardware. If you own one, a quick test and a pull request promoting it helps everyone — see CONTRIBUTING.
How do you control it?¶
Find the MIDI ports, then start the bridge with this driver:
osc-bridge detect # prints the ready-to-run line for what is plugged in
osc-bridge run --device devices/yamaha/reface_cp.json --out-port <N> --in-port <M>
Then send OSC to 127.0.0.1:7777, for example:
From Claude or any MCP client, the osc-bridge mcp server exposes this driver as reface_cp: ask “what can the Yamaha reface CP do?” and it reads this map with list_routes. See the MCP guide.
MIDI CC and NRPN parameters (27)¶
| OSC address | CC | NRPN (MSB/LSB) | Range | Nature | Section |
|---|---|---|---|---|---|
/reface_cp/general/type |
80 | 0–127 | continuous | General | |
/reface_cp/general/drive |
81 | 0–127 | continuous | General | |
/reface_cp/tremolo_wah/switch |
17 | 0–127 | continuous | Tremolo/wah | |
/reface_cp/tremolo_wah/depth |
18 | 0–127 | continuous | Tremolo/wah | |
/reface_cp/tremolo_wah/rate |
19 | 0–127 | continuous | Tremolo/wah | |
/reface_cp/chorus_phaser/switch |
85 | 0–127 | continuous | Chorus/phaser | |
/reface_cp/chorus_phaser/depth |
86 | 0–127 | continuous | Chorus/phaser | |
/reface_cp/chorus_phaser/speed |
87 | 0–127 | continuous | Chorus/phaser | |
/reface_cp/digital_delay_analog_delay/switch |
88 | 0–127 | continuous | Digital delay/analog delay | |
/reface_cp/digital_delay_analog_delay/depth |
89 | 0–127 | continuous | Digital delay/analog delay | |
/reface_cp/digital_delay_analog_delay/time |
90 | 0–127 | continuous | Digital delay/analog delay | |
/reface_cp/digital_delay_analog_delay/reverb_depth |
91 | 0–127 | continuous | Digital delay/analog delay | |
/reface_cp/rhodes_i |
80 | 0–127 | continuous | ||
/reface_cp/drive |
81 | 0–127 | continuous | ||
/reface_cp/off |
17 | 0–127 | continuous | ||
/reface_cp/off |
85 | 0–127 | continuous | ||
/reface_cp/depth |
18 | 0–127 | continuous | ||
/reface_cp/rate |
19 | 0–127 | continuous | ||
/reface_cp/depth |
86 | 0–127 | continuous | ||
/reface_cp/speed |
87 | 0–127 | continuous | ||
/reface_cp/off |
88 | 0–127 | continuous | ||
/reface_cp/depth |
91 | 0–127 | continuous | ||
/reface_cp/depth |
89 | 0–127 | continuous | ||
/reface_cp/time |
90 | 0–127 | continuous | ||
/reface_cp/volume |
7 | 0–127 | continuous | ||
/reface_cp/all_sounds_off |
120 | 0–127 | continuous | ||
/reface_cp/reset_all_cont |
121 | 0–127 | continuous |
SysEx commands (8)¶
| OSC address | Arguments |
|---|---|
/reface_cp/local_transpos |
val: u7 |
/reface_cp/speaker_output |
val: u7 |
/reface_cp/auto_power_off |
val: u7 |
/reface_cp/sustain_pedal |
val: u7 |
/reface_cp/local_control |
val: u7 |
/reface_cp/ctrl_spit_midi |
val: u7 |
/reface_cp/receive_ch |
val: u7 |
/reface_cp/transmit_ch |
val: u7 |
Performance MIDI¶
Notes, pitch bend and any CC are also available: /reface_cp/note/on <note> <velocity>, /reface_cp/cc/<number> <value>, /reface_cp/pitchbend <0-16383>, /reface_cp/program_change <n>.
Limitations¶
CC/NRPN only. SysEx (preset management, display control, bulk dump/load, vendor-proprietary opcodes) is NOT covered by pencilresearch. To extend this device with SysEx, sniff the vendor editor, add `sysex.header/footer` + `commands` blocks, and use `update_device.md` PR template.