Difference between revisions of "Protocol decoder:Nunchuk"
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| name = Nintendo Wii Nunchuk | | name = Nintendo Wii Nunchuk | ||
| description = Nintendo Wii Nunchuk controller | | description = Nintendo Wii Nunchuk controller | ||
| status = | | status = supported | ||
| license = GPLv2+ | | license = GPLv2+ | ||
| source_code_dir = nunchuk | | source_code_dir = nunchuk | ||
| Line 12: | Line 12: | ||
| optional_probes = — | | optional_probes = — | ||
| options = — | | options = — | ||
}} | }} | ||
| Line 18: | Line 17: | ||
== Hardware == | == Hardware == | ||
=== Wii Nunchuk via Buspirate v4 === | === Wii Nunchuk via Buspirate v4 === | ||
| Line 25: | Line 22: | ||
The [http://sigrok.org/gitweb/?p=sigrok-dumps.git;a=tree;f=i2c/wii_nunchuk 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 [http://sigrok.org/gitweb/?p=sigrok-dumps.git;a=tree;f=i2c/wii_nunchuk 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 | 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 setup:''' | ||
| Line 32: | Line 29: | ||
|- | |- | ||
!Probe | !Probe | ||
! | !I²C pin | ||
|- | |- | ||
| Line 55: | Line 52: | ||
File:Wii nunchuk probe setup.jpg|<small>Probe setup</small> | File:Wii nunchuk probe setup.jpg|<small>Probe setup</small> | ||
File:Wii nunchuk probing.jpg|<small>Probing</small> | File:Wii nunchuk probing.jpg|<small>Probing</small> | ||
File:PulseView Nunchuk.png|<small>PulseView decoding Nunchuk and I²C</small> | |||
</gallery> | </gallery> | ||
== Protocol == | == Protocol == | ||
The protocol is layered on top of [[Protocol decoder:i2c|I²C]]. See [http://wiibrew.org/wiki/Wiimote/Extension_Controllers/Nunchuck#Data_Format wiibrew.org] for a detailed description of the commands and registers. | |||
== Resources == | == Resources == | ||
* [http://wiibrew.org/wiki/Wiimote/Extension_Controllers/Nunchuck wiibrew.org: Nunchuck] | |||
[[Category:Protocol decoder]] | [[Category:Protocol decoder]] | ||
[[Category:I2C]] | [[Category:I2C]] | ||
Latest revision as of 23:04, 2 April 2015
 | |
| 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.