Difference between revisions of "HID Shared Memory"
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This page describes the format of the [[HID_Services|HID]] shared memory. | This page describes the format of the [[HID_Services|HID]] shared memory. | ||
| + | |||
| + | The data for each of the below entries(PAD state, circle-pad, touch-screen, etc) is originally read by the HID module at different times per frame. | ||
=Offset 0x0= | =Offset 0x0= | ||
| Line 11: | Line 13: | ||
|- | |- | ||
| 0x28 | | 0x28 | ||
| − | | | + | | Second PAD state entry. |
|- | |- | ||
| 0x34 | | 0x34 | ||
| Line 17: | Line 19: | ||
|- | |- | ||
| 0x38 | | 0x38 | ||
| − | | | + | | Third PAD state entry. |
|- | |- | ||
| 0x44 | | 0x44 | ||
| − | | Second circle-pad info | + | | Second circle-pad info entry. |
|- | |- | ||
| 0x48 | | 0x48 | ||
| − | | | + | | Fourth PAD state entry. |
|- | |- | ||
| 0x54 | | 0x54 | ||
| − | | Third circle-pad info | + | | Third circle-pad info entry. |
|- | |- | ||
| 0x58 | | 0x58 | ||
| − | | | + | | Fifth PAD state entry. |
|- | |- | ||
| 0x64 | | 0x64 | ||
| − | | Fourth circle-pad info | + | | Fourth circle-pad info entry. |
|- | |- | ||
| 0x68 | | 0x68 | ||
| − | | | + | | Sixth PAD state entry. |
|- | |- | ||
| 0x74 | | 0x74 | ||
| − | | Fifth circle-pad info | + | | Fifth circle-pad info entry. |
|- | |- | ||
| 0x78 | | 0x78 | ||
| − | | | + | | Seventh PAD state entry. |
|- | |- | ||
| 0x84 | | 0x84 | ||
| − | | Sixth circle-pad info | + | | Sixth circle-pad info entry. |
|- | |- | ||
| 0x88 | | 0x88 | ||
| − | | | + | | Eighth PAD state entry. |
|- | |- | ||
| 0x94 | | 0x94 | ||
| − | | Seventh circle-pad info | + | | Seventh circle-pad info entry. |
|- | |- | ||
| 0x98 | | 0x98 | ||
| − | | | + | | Ninth PAD state entry. |
|} | |} | ||
| − | |||
| − | |||
=Offset 0xC0= | =Offset 0xC0= | ||
| − | This 0x48-byte region stores entries for touch-screen position info. Each entry is 0x8-bytes, there's a total of 9 entries | + | This 0x48-byte region stores entries for touch-screen position info. Each entry is 0x8-bytes, there's a total of 9 entries. When the touch-screen is not being touched, this region is all-zero. |
The last 8 entries contain the pixel coordinates, while the first entry seems to contain the raw coordinate data prior to being converted to pixel coordinates. | The last 8 entries contain the pixel coordinates, while the first entry seems to contain the raw coordinate data prior to being converted to pixel coordinates. | ||
Revision as of 19:34, 16 August 2013
This page describes the format of the HID shared memory.
The data for each of the below entries(PAD state, circle-pad, touch-screen, etc) is originally read by the HID module at different times per frame.
Offset 0x0
| Relative offset | Description |
|---|---|
| 0x1C | PAD state. Bit set = button pressed, bit clear = button not pressed. |
| 0x28 | Second PAD state entry. |
| 0x34 | This stores circle-pad info: the low s16 is the X coordinate, the high s16 is the Y coordinate. The circle-pad center is ~0 for these fields. The range for these fields is approximately: -0x9C(top/left) - 0x9C(bottom/right). |
| 0x38 | Third PAD state entry. |
| 0x44 | Second circle-pad info entry. |
| 0x48 | Fourth PAD state entry. |
| 0x54 | Third circle-pad info entry. |
| 0x58 | Fifth PAD state entry. |
| 0x64 | Fourth circle-pad info entry. |
| 0x68 | Sixth PAD state entry. |
| 0x74 | Fifth circle-pad info entry. |
| 0x78 | Seventh PAD state entry. |
| 0x84 | Sixth circle-pad info entry. |
| 0x88 | Eighth PAD state entry. |
| 0x94 | Seventh circle-pad info entry. |
| 0x98 | Ninth PAD state entry. |
Offset 0xC0
This 0x48-byte region stores entries for touch-screen position info. Each entry is 0x8-bytes, there's a total of 9 entries. When the touch-screen is not being touched, this region is all-zero.
The last 8 entries contain the pixel coordinates, while the first entry seems to contain the raw coordinate data prior to being converted to pixel coordinates.
Entry format
| Relative offset | Size | Description |
|---|---|---|
| 0x0 | 0x2 | X coordinate. |
| 0x2 | 0x2 | Y coordinate. |
| 0x4 | 0x4 | This is 0x0 when this entry doesn't contain any actual data, value 0x1 indicates that this entry contains actual data. |