Difference between revisions of "IR:RST Shared Memory"

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-This page describes the format of the [[IR Services|ir:rst]]'s shared memory. It contains the current state of New 3DS input device, ie the c-stick and the ZL/ZR shoulder buttons.
-Size: 0x88 ?
-=Offset 0x0=
-{| class="wikitable" border="1"
-|-
-!  Relative offset
-!  Size
-!  Description
-|-
-| 0x0
-| 0x4
-| A counter that ranges from 0 to 7, presumably to indicate which entry was last updated
-|-
-| 0x4
-| 0x4
-| Unused ? (value 0x0)
-|-
-| 0x8
-| 0x80
-| Array of 8 entries, where each entry (see below) is 0x10-bytes.
-|}
-IR 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.
-==PAD State==
-{| class="wikitable" border="1"
-|-
-!  Bit
-!  Description
-|-
-| 14
-| ZL
-|-
-| 15
-| ZR
-|-
-| 24
-| C-stick right
-|-
-| 25
-| C-stick left
-|-
-| 26
-| C-stick up
-|-
-| 27
-| C-stick down
-|}
-The ir:rst PAD entries are the same format as HID ones and meant to be ORd with them (they are complementary, there is no overlap in used bits).
-==Entry format==
-{| class="wikitable" border="1"
-|-
-!  Relative offset
-!  Size
-!  Description
-|-
-| 0x0
-| 0x4
-| Current PAD state.
-|-
-| 0x4
-| 0x4
-| PAD state for buttons which were pressed(bitmasks which changed from value 0 to value 1) since the last HID update.
-|-
-| 0x8
-| 0x4
-| PAD state for buttons which were released(bitmasks which changed from value 1 to value 0) since the last HID update.
-|-
-| 0xC
-| 0x4
-| This stores c-stick info: the low s16 is the X coordinate, the high s16 is the Y coordinate. The c-stick center is exactly 0 for these fields. The range for these fields is approximately: -0x9C(bottom/left) - 0x9C(top/right).
-|}

Difference between revisions of "IR:RST Shared Memory"

Latest revision as of 01:20, 26 October 2014

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