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]]
 
−
|-
 
−
| 0x0B
 
−
| size=1, ro
 
−
| Battery percentage
 
−
|-
 
−
| 0x0D
 
−
| size=1, ro
 
−
| System voltage
 
−
|-
 
−
| 0x0F
 
−
| size=1, ro
 
−
| Flags (it changes when plugging/unplugging charger)
 
−
|-
 
−
| 0x20
 
−
| size=1, wo(?)
 
−
| MCU power register (0xFF is instant depower, 0x01 is poweroff, 0x02 is reboot)
 
−
|-
 
−
| 0x22
 
−
| size=1, rw
 
−
| LCD (power?) related register, AND'd with 0x3C
 
−
|-
 
−
| 0x27
 
−
| size=1, ro
 
−
| Raw volume slider state
 
−
|-
 
−
| 0x28
 
−
| size=1, ro
 
−
| 3D slider state(?) (0xFF if 3D is not enabled(?))
 
−
|-
 
−
| 0x29
 
−
| size=dynamic(?), rw
 
−
| Repeat register, any byte written here gets repeated indefinitely(?)
 
−
|-
 
−
| 0x2A
 
−
| size=1, rw
 
−
| Wifi LED state, non-0 value turns on the Wifi LED, AND'd with 0x0F
 
−
|-
 
−
| 0x2B
 
−
| size=1, rw
 
−
| Camera LED state, 0, 3, 6-0xF = off, 1 = slowly blinking, 2 = constantly on, 4 = flash once, 5 = delay before changing to 2
 
−
|-
 
−
| 0x2C
 
−
| size=1, rw
 
−
| 3D LED state, always AND'd with 0x0F
 
−
|-
 
−
| 0x2D
 
−
| size=??, ro(?)
 
−
| ???
 
−
|-
 
−
| 0x30
 
−
| size=6(?), rw
 
−
| Hexadecimal RTC (0x30 is seconds, 0x31 is minutes, 0x32 is most likely hours)
 
−
|-
 
−
| 0x3D
 
−
(bugs out reg. 0x3E)
 
−
| size=2, ro
 
−
| RTC tick counter (resets to 0 when the seconds increase)
 
−
|-
 
−
| 0x3F
 
−
| size=1, rw
 
−
| Peripheral power related? bit0 seems to depower everything, and pressing the power key instantly turns the 3DS off
 
−
|-
 
−
| 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 6th byte is FF-filled)
 
−
|-
 
−
| 0x60
 
−
| size=0x100, ro (first byte is wo)
 
−
| Looping queue register
 
−
Writing to first byte resets the queue position to the nth element
 
−
Reading from this register causes the values to shift up by one byte, and returns read-1 bytes from the bottom of the stack
 
−
|-
 
−
| 0x61
 
−
| size=dynamic(?), rw
 
−
| Writing to this register pushes values on top of reg. 0x60's stack (most likely in byte order(?))
 
−
|-
 
−
| 0x7F
 
−
| size=19(?), ro(?)
 
−
| ???
 
−
byte 06: battery related? (seems to decrase while charging and increase while discharging)
 
−
 
 
−
byte 10: power LED related? 0 is off, 1 is red
 
−
 
 
−
byte 13: RGB LED red factor
 
−
 
 
−
byte 17: Wifi LED brightness
 
−
 
 
−
byte 18: bit0: unset while power button is held, bit1: unset while home button is held, bit2: unset while Wifi slider is held, bit4: unset when charger is plugged in, bit6: unset when charging LED is active
 
−
|}
 

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.

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