Protocol decoder:nunchuk
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 | |
| Name | Nintendo Wii Nunchuk |
|---|---|
| Description | Nintendo Wii Nunchuk controller |
| Status | supported |
| License | GPLv2+ |
| Source code | decoders/nunchuk |
| Input | i2c |
| Output | nunchuk |
| Probes | — |
| Optional probes | — |
| Options | — |
The nunchuk protocol decoder supports the Nintendo Wii Nunchuk protocol.
Hardware
Wii Nunchuk via Buspirate v4
The i2c/wii_nunchuk directory in sigrok-dumps contains a set of example captures of I2C traffic from/to a Nintendo Wii Nunchuk game controller.
The logic analyzer used was a Saleae Logic (at 1MHz). It is probing the Wii Nunchuk that is connected to a Dangerous Prototypes Buspirate (v4) that is used as I²C master to talk to the Nunchuk controller.
Probe setup:
| Probe | I²C pin |
|---|---|
| 3 (red) | SCL |
| 7 (blue) | SDA |
Photos:
Device
Connector
Adapter, top
Adapter, bottom
Another adapter, top
Another adapter, bottom
Probe setup
Probing
PulseView decoding Nunchuk and I²C
Protocol
The protocol is layered on top of I²C. See wiibrew.org for a detailed description of the commands and registers.