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3,392 bytes added ,  18:03, 16 December 2020
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|-
 
|-
 
! System Version || Value
 
! System Version || Value
 +
|-
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| pre-1.0.0 || <=0x2
 
|-
 
|-
 
| [1.0.0+] || 0x3
 
| [1.0.0+] || 0x3
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|-
 
|-
 
| [8.0.0+] || 0x7
 
| [8.0.0+] || 0x7
 +
|-
 +
| [11.0.0+] || 0x8
 
|}
 
|}
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| 0x0 || 0x4 || Size of this ControllerSupportArgPrivate struct.
 
| 0x0 || 0x4 || Size of this ControllerSupportArgPrivate struct.
 
|-
 
|-
| 0x4 || 0x4 || Size of the storage following this one ([[#ControllerSupportArg]] or [[#ControllerFirmwareUpdateArg]]).
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| 0x4 || 0x4 || Size of [[#ControllerSupportArg]].
 
|-
 
|-
 
| 0x8 || 0x1 || Flag0
 
| 0x8 || 0x1 || Flag0
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| 0x9 || 0x1 || Flag1
 
| 0x9 || 0x1 || Flag1
 
|-
 
|-
| 0xA || 0x1 || [[#Type]]
+
| 0xA || 0x1 || [[#ControllerSupportMode]]
 
|-
 
|-
| 0xB || 0x1 || <code>nn::hid::system::ControllerSupportCaller</code>. Always zero except with ShowControllerFirmwareUpdateForSystem, which sets this to the input param.
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| 0xB || 0x1 || [[#ControllerSupportCaller]]. Always zero except with ShowControllerFirmwareUpdateForSystem/ShowControllerKeyRemappingForSystem, which sets this to the input param.
 
|-
 
|-
| 0xC || 0x4 || Output from [[HID_services#GetSupportedNpadStyleSet|GetSupportedNpadStyleSet]].
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| 0xC || 0x4 || Output from [[HID_services#GetSupportedNpadStyleSet|GetSupportedNpadStyleSet]]. With ShowControllerSupportForSystem on pre-3.0.0 this is value 0.
 
|-
 
|-
| 0x10 || 0x4 || Output from [[HID_services|GetNpadJoyHoldType]].
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| 0x10 || 0x4 || Output from [[HID_services|GetNpadJoyHoldType]]. With ShowControllerSupportForSystem on pre-3.0.0 this is value 1.
 
|}
 
|}
    
== ControllerSupportArg ==
 
== ControllerSupportArg ==
This is "nn::hid::ControllerSupportArg". This is a 0x21C-byte (0x430-byte with version 0x7) struct pushed for input storage.
+
This is "nn::hid::ControllerSupportArg". This is a 0x21C-byte (0x9C-byte with version <=0x2, 0x430-byte with version 0x7) struct pushed for input storage.
 +
 
 +
{| class="wikitable" border="1"
 +
|-
 +
!  Offset
 +
!  Size
 +
!  Description
 +
|-
 +
| 0x0 || 0x1 || s8 playerCountMin (must be >=0 and <=max_supported_players). Older versions assert when invalid, newer versions clamp the used value to a valid range.
 +
|-
 +
| 0x1 || 0x1 || s8 playerCountMax (must be >=1 and <=max_supported_players). Older versions assert when invalid, newer versions clamp the used value to a valid range.
 +
|-
 +
| 0x2 || 0x1 || u8 enableTakeOverConnection. Disconnects the controllers when not enabled.
 +
|-
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| 0x3 || 0x1 || u8 enableLeftJustify.
 +
|-
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| 0x4 || 0x1 || u8 enablePermitJoyDual.
 +
|-
 +
| 0x5 || 0x1 || u8 enableSingleMode. Enables using a single player in handheld-mode, dual-mode, or single-mode (playerCount* are overridden). Using handheld-mode is not allowed if this is not enabled.
 +
|-
 +
| 0x6 || 0x1 || u8 enableIdentificationColor. Enables using the identificationColor array when non-zero.
 +
|-
 +
| 0x7 || 4*max_supported_players || u8 identificationColor[4]. Array of 4-byte entries for each player, see below for total entries (max controllers). This entry contains 4 u8s, for the RGBA8 color. This controls the color of the UI player box outline.
 +
|-
 +
| 0x7 + 4*max_supported_players || 0x1 || u8 enableExplainText. Enables using the ExplainText data when non-zero.
 +
|}
   −
Layout with the original version:
+
With both versions, the rest of the struct is an array containing 0x81-byte (0x21-byte with version <=0x2) entries. With version pre-0x7 there's 4 entries allocated, starting with version 0x7 there's 8 entries allocated. This contains the ExplainText string which includes the NUL-terminator. Each entry corresponds to a controller NpadId, starting with NpadId/controller 0.
 +
 
 +
Regardless of version, the default data for this struct is setup by setting u32 +0 to 0x01010400, u8 +4 to 0x1, with the rest being cleared as needed. sdknso itself only calls the func for this from ShowControllerStrapGuide, since that's the only time sdknso itself writes to ControllerSupportArg besides ExplainText (and is also the only case where the ControllerSupportArg is not user-specified).
 +
 
 +
== ControllerFirmwareUpdateArg ==
 +
This is "nn::hid::ControllerFirmwareUpdateArg". This is a 4-byte struct pushed for the input storage. The default value of this entire struct is 0.
    
{| class="wikitable" border="1"
 
{| class="wikitable" border="1"
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!  Description
 
!  Description
 
|-
 
|-
| 0x0 || 0x18 || ?
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| 0x0 || 0x1 || u8 enableForceUpdate, non-zero to enable. Default is 0. Forces a firmware update when enabled, without an UI option to skip it.
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|-
 +
| 0x1 || 0x3 || u8 padding[3].
 
|}
 
|}
   −
Layout starting with version 0x7:
+
== ControllerKeyRemappingArg ==
 +
This is "nn::hid::system::ControllerKeyRemappingArg". This is a 0x10-byte struct.
 +
 
 +
The defaults for this is all-zero for the first 0xC-bytes.
    
{| class="wikitable" border="1"
 
{| class="wikitable" border="1"
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!  Description
 
!  Description
 
|-
 
|-
| 0x0 || 0x28 || ?
+
| 0x0 || 0x8 ||  
 +
|-
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| 0x8 || 0x4 ||
 +
|-
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| 0xC || 0x4 || Padding
 
|}
 
|}
   −
With both versions, the rest of the struct is an array containing 0x81-byte entries. With the original version there's 4 entries allocated, starting with version 0x7 there's 8 entries allocated. This contains the ExplainText string which includes the NUL-terminator. Each entry corresponds to a controller NpadId, starting with NpadId/controller 0.
+
== ControllerSupportMode ==
 +
This is "nn::hid::system::ControllerSupportMode".
   −
Regardless of version, the default data for this struct is setup by setting u32 +0 to 0x01010400, u8 +4 to 0x1, with the rest being cleared as needed. sdknso itself only calls the func for this from ShowControllerStrapGuide, since that's the only time sdknso itself writes to ControllerSupportArg besides ExplainText (and is also the only case where the ControllerSupportArg is not user-specified).
+
{| class="wikitable" border="1"
 +
|-
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! Value || Description
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|-
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| 0 || ShowControllerSupport
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|-
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| 1 || [3.0.0+] ShowControllerStrapGuide
 +
|-
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| 2 || [3.0.0+] ShowControllerFirmwareUpdate
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|-
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| 4 || [11.0.0+] ShowControllerKeyRemappingForSystem
 +
|}
 +
 
 +
In sdknso there's two funcs which expose ShowControllerSupport: one which has a param for the output [[#ControllerSupportResultInfo]], and one that saves that to stack and ignores it.
 +
 
 +
ShowControllerSupportForSystem has equivalent funcs for the above two funcs, which are the same except [[#ControllerSupportArgPrivate|Flag1]] is set to 1 and [[#ControllerSupportArgPrivate|Flag0]] is set to the input bool.
 +
 
 +
ShowControllerFirmwareUpdateForSystem is the same as ShowControllerFirmwareUpdate, except [[#ControllerSupportArgPrivate|Flag1]] is set to 1 and [[#ControllerSupportArgPrivate|ControllerSupportCaller]] is set to the input param.
 +
 
 +
ShowControllerSupportCore will assert if the mode is ShowControllerFirmwareUpdate, and ShowControllerFirmwareUpdateCore will assert if the mode is not ShowControllerFirmwareUpdate.
 +
 
 +
ShowControllerSupport seems to only display the applet UI when doing so is actually needed?(This doesn't apply to the ForSystem version)
   −
== ControllerFirmwareUpdateArg ==
+
== ControllerSupportCaller ==
This is "nn::hid::ControllerFirmwareUpdateArg". This is a 4-byte struct pushed for the input storage. The default value is 0.
+
This is "nn::hid::system::ControllerSupportCaller".
   −
== Type ==
   
{| class="wikitable" border="1"
 
{| class="wikitable" border="1"
 
|-
 
|-
! Name || Type value || Description
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! Value || Description
 
|-
 
|-
| ShowControllerSupport || 0 ||  
+
| 0 || Application
 
|-
 
|-
| [3.0.0+] ShowControllerStrapGuide || 1 ||  
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| 1 || Skips the firmware-update confirmation dialog. This has the same affect as using the controller-update option from qlaunch System Settings.
|-
  −
| [3.0.0+] ShowControllerFirmwareUpdate || 2 ||
   
|}
 
|}
    
== ControllerSupportResultInfo ==
 
== ControllerSupportResultInfo ==
 
This is "nn::hid::ControllerSupportResultInfo". This is a 8-byte struct.
 
This is "nn::hid::ControllerSupportResultInfo". This is a 8-byte struct.
 +
 +
{| class="wikitable" border="1"
 +
|-
 +
!  Offset
 +
!  Size
 +
!  Description
 +
|-
 +
| 0x0 || 0x1 || s8 playerCount.
 +
|-
 +
| 0x1 || 0x3 || u8 padding[3].
 +
|-
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| 0x4 || 0x4 || u32 selectedId, NpadId.
 +
|}
    
== Usage ==
 
== Usage ==
User-processes should push a common arguments struct, an [[#ControllerSupportArgPrivate]], then [[#ControllerSupportArg]] or [[#ControllerFirmwareUpdateArg]].
+
User-processes should push a common arguments struct, an [[#ControllerSupportArgPrivate]], then [[#ControllerSupportArg]] / [[#ControllerFirmwareUpdateArg]] / [[#ControllerKeyRemappingArg]].
    
On success, an output storage should be popped, with size 0xC being used to read from there (sdknso ignores the actual storage size). When [[#ControllerSupportArg]] was previously used, the first 8-bytes are copied to the output [[#ControllerSupportResultInfo]] (which the user can ignore), otherwise it's ignored. The remaining u32 determines the Result:
 
On success, an output storage should be popped, with size 0xC being used to read from there (sdknso ignores the actual storage size). When [[#ControllerSupportArg]] was previously used, the first 8-bytes are copied to the output [[#ControllerSupportResultInfo]] (which the user can ignore), otherwise it's ignored. The remaining u32 determines the Result:

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