Hardware calibration
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File format
The file consists out of a 0x200 big header (though the actual header is only 0x30 bytes, the rest is zerofilled), plus data whose size is indicated in the header.
Header
Offset | Size | Description |
---|---|---|
0x0 | 0x4 | Magic "CCAL" |
0x4 | 0x4 | Version |
0x8 | 0x4 | Data size, always 0x7D0 |
0xC | 0x2? | ??? |
0xE | 0x2 | Bitmask of successful Aging tests |
0x10 | 0x20 | On devunits and if 0x1FF81006 is 3 or 4 or 7 or 8 or 9 then SHA256,
otherwise HMACSHA256 signature of the data section |
0x30 | 0x1D0 | Zerofilled |
Aging masks
Bit | Description |
---|---|
0 | FCRAM |
1 | LCD flicker (always successful) |
2 | Camera |
3 | Touch panel (always successful) |
4 | Circle pad (analog stick) |
5 | Codec |
6 | Gyroscope |
7 | RTC |
8 | Accelerometer |
9 | Surround |
A | Power saving mode (ABL) |
B | 3D screen (ULCD) |
C | Backlight PWM |
D | Analog stick A (???) |
E | Camera extensions |
F | Power saving mode (ABL) in legacy (DSi/GBA) mode |
Data blocks
Offset | Size | Description |
---|---|---|
0x00 | 0x10 | Touch panel |
0x14 | 0x08 | Circle pad |
0x20 | 2* | Screen flicker |
0x30 | 0x8C | Camera position |
0x218 | 0x06 | Programmable Infrared Transmitter (PIT) |
0x220 | 0x214 | 3D filters |
0x4E0 | 0x18 | Circle pad extra |
0x540 | 0x0A | MCU |
0x550 | 0x04 | 3D screen (ULCD) delay |
0x560 | 0x0A | Microphone echo cancellation |
0x570 | 0x10E | Power saving mode (ABL) extra |
0x680 | 0x0A | CStick (Right stick) |
0x690 | 0x1A | Q Tracking Module (QTM) |
Data block formats
Touch
Offset | Description |
---|---|
0x00 | s16 RawX0 |
0x02 | s16 RawY0 |
0x04 | s16 PointX0 |
0x06 | s16 PointY0 |
0x08 | s16 RawX1 |
0x0A | s16 RawY1 |
0x0C | s16 PointX1 |
0x0E | s16 PointY1 |
Circle pad
Offset | Description |
---|---|
0x00 | s16 CenterX |
0x02 | s16 CenterY |
Screen flicker
Offset | Description |
---|---|
0 | u8 FlickerTop |
1 | u8 FlickerBottom |
2* | Checksum low byte, NOT THIS[0] |
3* | Checksum high byte, THIS[1] |
Camera position
Offset | Description |
---|---|
0x00 | u32 flags |
0x04 | float scale |
0x08 | float RotationZ |
0x0C | float TranslationX |
0x10 | float TranslationY |
0x14 | float RotationX |
0x18 | float RotationY |
0x1C | float ViewAngleRight |
0x20 | float ViewAngleLeft |
0x24 | float ChartDistance(???) |
0x28 | float CameraDistance |
0x2C | s16 ImageWidth |
0x2E | s16 ImageHeight |
0x30 | u8 reserved[0x10] |
0x40 | u8 ???[0x40] |
0x80 | s16 aeBaseTarget(???) |
0x82 | s16 kRL |
0x84 | s16 kGL |
0x86 | s16 kBL |
0x88 | s16 ccmPosition |
3D filters
Offset | Description |
---|---|
0x00 | u16 SpecialFilter[0x100] |
0x200 | u32 IIRSurroundFilter[5] |
Circle pad extra
Offset | Description |
---|---|
0x00 | float ScaleX |
0x04 | float ScaleY |
0x08 | s16 MaxX |
0x0A | s16 MinX |
0x0C | s16 MaxY |
0x0E | s16 MinY |
0x10 | s16 type |
0x12 | u8 unknown_padding[6] |
ULCD delay
Offset | Description |
---|---|
0x00 | u8 To2D |
0x01 | u8 To3D |
Microphone echo cancel
Offset | Description |
---|---|
0x00 | s8 params[8] |
ABL
Offset | Description |
---|---|
0x00 | u8 MaxInertia |
0x01 | u8 pad |
0x02 | u16 PWM_CNT_EX |
0x04 | u32 Histogram1 |
0x08 | u32 Histogram2 |
0x0C | u32 adjust[0x40] |
CStick
Offset | Description |
---|---|
0x00 | u8 ThinningCountX(???) |
0x01 | u8 ThinningCountY(???) |
0x02 | u16 reserved[3] |
Reading
If 0x1FF81006 is 3 or 4 or 7 or 8 or 9 then the callibration data is read from the EEPROM using the i2c:EEP
service command 0x001000C0, using offset 0x000 for HWCAL0, and offset 0x800 for HWCAL1.
Otherwise attempt is made to read CTRNAND:/ro/sys/HWCAL(0|1).dat
instead.