Difference between revisions of "MCUHWC:ReadRegister"

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(Merge this to I2C_Registers)
 
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=Description=
 
=Description=
This function reads data from the MCU
+
This is just a wrapper for [[I2C_Services|I2C]] command 0x001200C2 with [[I2C_Registers|DeviceID]] 3
  
 
=Registers=
 
=Registers=
{| class="wikitable" border="1"
+
This table has been merged to the [[I2C_Registers#Device_3|I2C Registers]] page.
|-
 
!  ID
 
!  Info
 
!  Description
 
|-
 
| 0x04
 
0x05
 
| size=1, rw
 
| Top/bottom screen flicker
 
|-
 
| 0x08
 
| size=1, ro
 
| Raw 3D slider state
 
|-
 
| 0x09
 
| size=1, ro
 
| Volume slider state (0x00 - 0x3F)
 
This is the same value returned by [[MCUHWC:GetSoundVolume|MCUHWC:GetSoundVolume]]
 
|-
 
| 0x0F
 
| size=1, ??
 
| ???
 
|-
 
| 0x27
 
| size=1, ro
 
| Raw volume slider state
 
|-
 
| 0x28
 
| size=1, ro
 
| 3D slider state(?) (0xFF if 3D is not enabled(?))
 
|-
 
| 0x29
 
0x2D
 
| size=n/a, ??
 
| ??? (all zeroes)
 
|-
 
| 0x30
 
| size=6(?), rw
 
| Hexadecimal RTC
 
|-
 
| 0x31
 
| size=?, rw
 
| This value is always ORed with 0x80, and writing 0x7F (or 0xFF) into this value makes the 3DS crash when pressing the home button. Occasionally changes.
 
|-
 
| 0x3D
 
(bugs out reg. 0x3E)
 
| size=2, ro
 
| Value rapidly changes, looks like RTC tick counter (resets to 0 when the seconds increase)
 
|-
 
| 0x46
 
| size=1, ro
 
| Gyro Y(?) axis rotation (0x00 = flat, 0x40 = 3DS standing on right side, 0xBE = 3DS standing on left side)
 
|-
 
| 0x48
 
| size=1, ro
 
| Gyro Z(?) axis rotation (0x00 = flat, 0x40 = 3DS standing vertically, 0xBE = 3DS base is vertically upside-down)
 
|-
 
| 0x4A
 
| size=1, ro
 
| Gyro X(?) axis rotation (0x00 = 3DS standing vertically, 0x40 = face-down flat, 0xBE = flat)
 
|-
 
| 0x4F
 
| size=6(?), ??
 
| ??? (reading past 6 is FF-filled)
 
|-
 
| 0x60
 
(bugs out reg. 0x61)
 
| size=0x100(?), ??
 
| ???, looping queue
 
|-
 
| 0x7F
 
| size=??, ??
 
| ???
 
|}
 

Latest revision as of 01:24, 11 March 2017

Request[edit]

Index Word Description
0 Header code [0x00010082]
1 u8 register
2 size
3 Descriptor for mapping a write-only buffer in the target process
4 data pointer

Response[edit]

Index Word Description
0 Header code
1 Result code

Description[edit]

This is just a wrapper for I2C command 0x001200C2 with DeviceID 3

Registers[edit]

This table has been merged to the I2C Registers page.