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 |
|---|---|---|
| 0x30 | 0x8C | Camera position |
| 0x218 | 0x06 | Programmable Interrupt Timer??? (PIT) |
| 0x540 | 0x0A | MCU |
| 0x550 | 0x04 | 3D screen (ULCD) delay |
| 0x560 | 0x0A | Microphone echo cancelation |
| 0x570 | 0x10E | Power saving mode (ABL) extra |
| 0x680 | 0x0A | CStick (Right stick) |
| 0x690 | 0x1A | Q Tracking Module (QTM) |
Data block formats
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 |
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.