Appearance
Reference — Scheiber gateway
The MUXEN devices this gateway publishes
| Device | Function | Instance | What it carries |
|---|---|---|---|
| SFSP receptor | 22 | configured (InstanceNum) | the bridge itself: how many switches are loaded, and the identifier of any unknown switch pressed |
| Emulated switch | 23 | the pairing slot number, 0…62 | one per paired switch: which buttons are down |
| Lighting block | 8 | the Scheiber block's coding number | one per discovered Scheiber SFSP auxiliary block: 6 channels, on/off and dimming |
| Generic I/O | 17 | configured (InstanceNum) | the box's own relays, inputs and analog inputs |
MQTT topics on the Brain follow device/<function>/<instance>/<frame>, so device/23/5/life is the switch paired in slot 5.
Parameters — SFSP receptor (function 22)
| Parameter | Type | Default | Meaning |
|---|---|---|---|
InstanceNum | 0…62 | 255 | the bridge's own instance; 255 means not addressed |
SfspInter0 … SfspInter62 | 32-bit | 0 | the Scheiber identifier of the switch paired in this slot; 0 = empty. The slot number is the MUXEN instance of that switch |
ProductId, HardwareId, SoftwareId, SoftwareVersion | read-only | see Reference |
Changes to the pairing slots take effect at the next restart — write with --reboot.
Parameters of the generic I/O device are the ones common to every CanCan: Reference.
Routines
| Routine | Payload | Effect |
|---|---|---|
| 1 | 0001 | restore the instance number to its default |
| 1 | any bit above bit 0 | restore every other parameter — erases all pairing |
| 2 | 01 / 00 | report the identifier of every switch pressed, not only unknown ones. Not saved; off after a restart |
Routine 2 replaces the usual "locate" animation on this firmware.
Timings
| Emulated switch published every | 500 ms |
| A button releases itself after | 5 s without a new press event |
| Lighting block state published every | 500 ms |
| A lighting block is forgotten after | 5 s without a life frame |
| Bridge life frame every | 1 s |
The Scheiber side
| Bus | CAN 2, 250 kbit/s, fixed by the firmware |
| Frames read | SFSP switch events from receiver blocks; life and output-state frames from SFSP auxiliary blocks |
| Frames written | output commands to SFSP auxiliary blocks |
| Filtering | none — the gateway listens to the whole bus and picks out what it understands |
| Dimming range | 0…240 (values above 240 are clamped) |
Anything else on the Scheiber bus is ignored.
Limits
| Paired switches | 63 (slots 0…62) |
| Lighting blocks tracked at once | 63 |
| Buttons per switch | 8 |
| Channels per lighting block | 6 |
Known limitations
- The signal-strength field published with an emulated switch carries no meaningful value. Ignore it; the switches are relayed over CAN, not received by radio here.
- The gateway forwards MUXEN lighting commands for any instance to the Scheiber block with that coding number. Lighting instance numbers must not collide with other lighting devices on the boat.
Versions
| Hardware | Version | Image |
|---|---|---|
| CanCan v1 | 5.7 | 010010005-app_scheiber-firmware.srec |
| CanCan v2 | 6.2 | 010010005-V2-app_scheiber-firmware.srec |
Source: workspace/muxen/cancan/app_scheiber/, product overlay boards/arm/<board>/010010005.overlay.