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[sigrok-dumps.git] / i2c / wii_nunchuk / README

-------------------------------------------------------------------------------
Nintendo Wii Nunchuk controller
-------------------------------------------------------------------------------

This is a collection of example captures of I2C traffic from/to a Nintendo
Wii Nunchuk game controller.

A Dangerous Prototypes Buspirate (v4) was used as I2C master to talk to the
Nunchuk controller.

Details:
https://en.wikipedia.org/wiki/Wiimote#Nunchuk
http://wiibrew.org/wiki/Wiimote/Extension_Controllers/Nunchuck
http://dangerousprototypes.com/docs/Bus_Pirate
http://dangerousprototypes.com/2009/08/19/bus-pirate-wii-nunchuck-quick-guide/


Logic analyzer setup
--------------------

The logic analyzer used was a Saleae Logic (at 1MHz):

  Probe       I2C pin
  -------------------
  3 (red)     SCL
  7 (blue)    SDA


Buspirate setup
---------------

Connections:

  Buspirate   Nunchuk I2C breakout adapter
  ----------------------------------------
  GND         - (GND)
  +3.3        + (VCC)
  MOSI        d (SDA)
  CLK         c (SCL)

The basic setup after connecting to the Buspirate on /dev/ttyACM0
(115200, 8n1) via minicom was:

  HiZ>m (mode)
  (1)>4 (I2C)
  (1)>2 (I2C mode: hardware)
  (1)>1 (speed: 100kHz)
  I2C>W (enable Buspirate power supplies)

See below for further per-file I2C commands used.


sigrok
------

The sigrok command line used was:

  sigrok-cli -d fx2lafw:samplerate=1mhz --time <ms> \
             -p '3=SCL,7=SDA' -o <filename>

The <ms> and <filename> parameters vary depending on the file.


wii_nunchuk_init.sr
-------------------

I2C>[0xa4 0x40 0x00]
I2C START BIT
WRITE: 0xA4 ACK
WRITE: 0x40 ACK
WRITE: 0x00 ACK
I2C STOP BIT


wii_nunchuk_set_reg.sr
----------------------

I2C>[0xa4 0x00]
I2C START BIT
WRITE: 0xA4 ACK
WRITE: 0x00 ACK
I2C STOP BIT


wii_nunchuk_data_idle.sr
------------------------

No buttons were pressed, the analog stick was not moved.

I2C>[0xa5 r:6]
I2C START BIT
WRITE: 0xA5 ACK
READ: 0x74  ACK 0x7F  ACK 0x7B  ACK 0x20  ACK 0x7D  ACK 0xC7
NACK


wii_nunchuk_data_left.sr
------------------------

No buttons were pressed, the analog stick was moved to the left.

I2C>[0xa5 r:6]
I2C START BIT
WRITE: 0xA5 ACK
READ: 0x12  ACK 0x7C  ACK 0x48  ACK 0x2C  ACK 0x97  ACK 0x2F
NACK
I2C STOP BIT


wii_nunchuk_data_right.sr
-------------------------

No buttons were pressed, the analog stick was moved to the right.

I2C>[0xa5 r:6]
I2C START BIT
WRITE: 0xA5 ACK
READ: 0xD6  ACK 0x61  ACK 0x4E  ACK 0x28  ACK 0x93  ACK 0x2B
NACK
I2C STOP BIT


wii_nunchuk_data_top.sr
-----------------------

No buttons were pressed, the analog stick was moved to the top.

I2C>[0xa5 r:6]
I2C START BIT
WRITE: 0xA5 ACK
READ: 0x74  ACK 0x7E  ACK 0x8E  ACK 0x70  ACK 0x48  ACK 0x97
NACK
I2C STOP BIT


wii_nunchuk_data_bottom.sr
--------------------------

No buttons were pressed, the analog stick was moved to the bottom.

I2C>[0xa5 r:6]
I2C START BIT
WRITE: 0xA5 ACK
READ: 0x75  ACK 0x19  ACK 0x43  ACK 0x2F  ACK 0x65  ACK 0xA3
NACK
I2C STOP BIT


wii_nunchuk_button_c.sr
-----------------------

The C button was pressed.

I2C>[0xa5 r:6]
I2C START BIT
WRITE: 0xA5 ACK
READ: 0x75  ACK 0x7F  ACK 0x70  ACK 0x56  ACK 0x9F  ACK 0xED
NACK
I2C STOP BIT


wii_nunchuk_button_z.sr
-----------------------

The Z button was pressed.

I2C>[0xa5 r:6]
I2C START BIT
WRITE: 0xA5 ACK
READ: 0x75  ACK 0x7F  ACK 0x80  ACK 0x78  ACK 0x64  ACK 0x6C
NACK
I2C STOP BIT


wii_nunchuk_orientation_vertical_top.sr
---------------------------------------

The Nunchuk was in vertical ("normal") position.

I2C>[0xa5 r:6]
I2C START BIT
WRITE: 0xA5 ACK
READ: 0x75  ACK 0x7F  ACK 0x81  ACK 0x78  ACK 0x63  ACK 0x5F
NACK
I2C STOP BIT


wii_nunchuk_orientation_vertical_bottom.sr
------------------------------------------

The Nunchuk was in vertical position, help upside-down.

I2C>[0xa5 r:6]
I2C START BIT
WRITE: 0xA5 ACK
READ: 0x75  ACK 0x7F  ACK 0x71  ACK 0x83  ACK 0x5D  ACK 0xD3
NACK
I2C STOP BIT


wii_nunchuk_orientation_horizontal_left.sr
------------------------------------------

The Nunchuk was in horizontal position, pointing to the left.

I2C>[0xa5 r:6]
I2C START BIT
WRITE: 0xA5 ACK
READ: 0x75  ACK 0x7F  ACK 0x25  ACK 0x7E  ACK 0x7B  ACK 0xEB
NACK
I2C STOP BIT


wii_nunchuk_orientation_horizontal_right.sr
-------------------------------------------

The Nunchuk was in horizontal position, pointing to the right.

I2C>[0xa5 r:6]
I2C START BIT
WRITE: 0xA5 ACK
READ: 0x75  ACK 0x7F  ACK 0x8F  ACK 0x7E  ACK 0x75  ACK 0x4B
NACK
I2C STOP BIT


wii_nunchuk_init_reg_3xdata.sr
------------------------------

I2C>[0xa4 0x40 0x00]
I2C START BIT
WRITE: 0xA4 ACK
WRITE: 0x40 ACK
WRITE: 0x00 ACK
I2C STOP BIT

I2C>[0xa4 0x00]
I2C START BIT
WRITE: 0xA4 ACK
WRITE: 0x00 ACK
I2C STOP BIT

I2C>[0xa5 r:6]
I2C START BIT
WRITE: 0xA5 ACK
READ: 0x75  ACK 0x7F  ACK 0x77  ACK 0x4F  ACK 0x82  ACK 0x3B
NACK
I2C STOP BIT

(for the above values, no button was pressed)

I2C>[0xa4 0x00]
I2C START BIT
WRITE: 0xA4 ACK
WRITE: 0x00 ACK
I2C STOP BIT

I2C>[0xa5 r:6]
I2C START BIT
WRITE: 0xA5 ACK
READ: 0x75  ACK 0x7F  ACK 0x75  ACK 0x44  ACK 0x82  ACK 0x34
NACK
I2C STOP BIT

(for the above values, the Z button was pressed)

I2C>[0xa4 0x00]
I2C START BIT
WRITE: 0xA4 ACK
WRITE: 0x00 ACK
I2C STOP BIT
I2C>[0xa5 r:6]
I2C START BIT
WRITE: 0xA5 ACK
READ: 0x75  ACK 0x7F  ACK 0x77  ACK 0x43  ACK 0x83  ACK 0x5D
NACK
I2C STOP BIT

(for the above values, the C button was pressed)