HID Shared Memory: Difference between revisions
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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 | The data for each of the below entries(PAD state, circle-pad, touch-screen, etc) is originally written by the HID module at different times per frame. | ||
size: 0x2b0 (FIRM 4.4) | size: 0x2b0 (FIRM 4.4) | ||
| Line 9: | Line 9: | ||
|- | |- | ||
! Relative offset | ! Relative offset | ||
! Size | |||
! Description | ! Description | ||
|- | |- | ||
| 0x1C | | 0x1C | ||
| 0x4 | |||
| [[PAD]] state. Bit set = button pressed, bit clear = button not pressed. Bit28-31 do not apply to this entry, but they apply to further PAD state entries. Bit28-31 are set when the corresponding circle pad coordinate is >=41 (or <=-41). | | [[PAD]] state. Bit set = button pressed, bit clear = button not pressed. Bit28-31 do not apply to this entry, but they apply to further PAD state entries. Bit28-31 are set when the corresponding circle pad coordinate is >=41 (or <=-41). | ||
|- | |- | ||
| 0x28 | | 0x28 | ||
| 0x4 | |||
| Second PAD state entry. | | Second PAD state entry. | ||
|- | |- | ||
| 0x34 | | 0x34 | ||
| 0x4 | |||
| 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(bottom/left) - 0x9C(top/right). | | 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(bottom/left) - 0x9C(top/right). | ||
|- | |- | ||
| 0x38 | | 0x38 | ||
| 0x4 | |||
| Third PAD state entry. | | Third PAD state entry. | ||
|- | |- | ||
| 0x44 | | 0x44 | ||
| 0x4 | |||
| Second circle-pad info entry. | | Second circle-pad info entry. | ||
|- | |- | ||
| 0x48 | | 0x48 | ||
| 0x4 | |||
| Fourth PAD state entry. | | Fourth PAD state entry. | ||
|- | |- | ||
| 0x54 | | 0x54 | ||
| 0x4 | |||
| Third circle-pad info entry. | | Third circle-pad info entry. | ||
|- | |- | ||
| 0x58 | | 0x58 | ||
| 0x4 | |||
| Fifth PAD state entry. | | Fifth PAD state entry. | ||
|- | |- | ||
| 0x64 | | 0x64 | ||
| 0x4 | |||
| Fourth circle-pad info entry. | | Fourth circle-pad info entry. | ||
|- | |- | ||
| 0x68 | | 0x68 | ||
| 0x4 | |||
| Sixth PAD state entry. | | Sixth PAD state entry. | ||
|- | |- | ||
| 0x74 | | 0x74 | ||
| 0x4 | |||
| Fifth circle-pad info entry. | | Fifth circle-pad info entry. | ||
|- | |- | ||
| 0x78 | | 0x78 | ||
| 0x4 | |||
| Seventh PAD state entry. | | Seventh PAD state entry. | ||
|- | |- | ||
| 0x84 | | 0x84 | ||
| 0x4 | |||
| Sixth circle-pad info entry. | | Sixth circle-pad info entry. | ||
|- | |- | ||
| 0x88 | | 0x88 | ||
| 0x4 | |||
| Eighth PAD state entry. | | Eighth PAD state entry. | ||
|- | |- | ||
| 0x94 | | 0x94 | ||
| 0x4 | |||
| Seventh circle-pad info entry. | | Seventh circle-pad info entry. | ||
|- | |- | ||
| 0x98 | | 0x98 | ||
| 0x4 | |||
| Ninth PAD state entry. | | Ninth PAD state entry. | ||
|- | |- | ||
| 0xA4 | | 0xA4 | ||
| 0x4 | |||
| Eighth circle-pad info entry. | | Eighth circle-pad info entry. | ||
|} | |||
=Offset 0xA8= | |||
{| class="wikitable" border="1" | |||
|- | |- | ||
| | ! Relative offset | ||
| | ! Size | ||
! Description | |||
|- | |||
| 0x10 | |||
| 0x4 | |||
| Index in the array at +0x20 which was last updated by HID module. | |||
|- | |||
| 0x18 | |||
| 0x8 | |||
| Touch-screen entry, which seems to contain raw coordinate data prior to being converted to pixel coordinates. | |||
|- | |||
| 0x20 | |||
| 0x40 | |||
| 8 touch-screen entries, containing pixel coordinates. | |||
|} | |} | ||
This 0x60-byte region stores state for touch-screen related info. Each touch-screen entry is all-zero when the touch-screen is not being touched. | |||
This | |||
HID module first updates index0, then index1, and so on. When updating the array when the index is already 7, the index is reset to 0. | |||
==Entry format== | ==Entry format== | ||
| Line 92: | Line 126: | ||
| The u8 at +0 here is 0x0 when this entry doesn't contain any actual data, value 0x1 indicates that this entry contains actual data. | | The u8 at +0 here is 0x0 when this entry doesn't contain any actual data, value 0x1 indicates that this entry contains actual data. | ||
|} | |} | ||
=Offset 0x108= | |||
The size of this region is 0x50-bytes. This probably contains the gyroscope and/or accelerometer state? | |||
=Offset 0x158= | |||
The size of this region is 0xE0-bytes. Unknown, contains 0xFF/0x00 bytes? | |||
=Offset 0x238= | |||
The size of this region is 0x78-bytes. Unknown, contains 0xFF/0x00 bytes? | |||