Yamaha reface CS: MIDI CC, NRPN and OSC map¶
The Yamaha reface CS as named OSC addresses — 17 CC — ready to use from Claude (MCP), SuperCollider, Sonic Pi, TouchDesigner or any OSC app via osc-bridge.
| Device | Yamaha reface CS |
|---|---|
| Vendor | Yamaha |
| OSC prefix | /reface_cs |
| Source | 📦 Derived from MIDI Guide (community CC/NRPN data) |
| Firmware | unknown |
| Revision | per pencilresearch canonical CSV |
| Upstream | pencilresearch |
| Data licence | CC-BY-SA-4.0 — MIDI Guide (https://midi.guide) by Pencil Research and contributors |
| Driver file | devices/yamaha/reface_cs.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_cs.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_cs: ask “what can the Yamaha reface CS do?” and it reads this map with list_routes. See the MCP guide.
MIDI CC and NRPN parameters (17)¶
| OSC address | CC | NRPN (MSB/LSB) | Range | Nature | Section |
|---|---|---|---|---|---|
/reface_cs/general/portamento |
20 | 0–127 | continuous | General | |
/reface_cs/lfo/assign |
78 | 0–127 | continuous | LFO | |
/reface_cs/lfo/depth |
77 | 0–127 | continuous | LFO | |
/reface_cs/lfo/speed |
76 | 0–127 | continuous | LFO | |
/reface_cs/oscillator/type |
80 | 0–127 | continuous | Oscillator | |
/reface_cs/oscillator/texture |
81 | 0–127 | continuous | Oscillator | |
/reface_cs/oscillator/mod |
82 | 0–127 | continuous | Oscillator | |
/reface_cs/filter/cutoff |
74 | 0–127 | continuous | Filter | |
/reface_cs/filter/resonance |
71 | 0–127 | continuous | Filter | |
/reface_cs/envelope_generator/eg_feg_aeg_balance |
83 | 0–127 | continuous | Envelope generator | |
/reface_cs/envelope_generator/eg_attack_time |
73 | 0–127 | continuous | Envelope generator | |
/reface_cs/envelope_generator/eg_decay_time |
75 | 0–127 | continuous | Envelope generator | |
/reface_cs/envelope_generator/eg_sustain_level |
79 | 0–127 | continuous | Envelope generator | |
/reface_cs/envelope_generator/eg_release_time |
72 | 0–127 | continuous | Envelope generator | |
/reface_cs/effect/type |
17 | 0–127 | continuous | Effect | |
/reface_cs/effect/depth |
18 | 0–127 | continuous | Effect | |
/reface_cs/effect/rate |
19 | 0–127 | continuous | Effect |
Performance MIDI¶
Notes, pitch bend and any CC are also available: /reface_cs/note/on <note> <velocity>, /reface_cs/cc/<number> <value>, /reface_cs/pitchbend <0-16383>, /reface_cs/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.