Joy-Con Firmware: Difference between revisions

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|-
|-
! Offset
! Offset
! Endianness
! Size
! Size
! Description
! Description
|-
|-
| 0x00 || B || 0x14 || Magic number??
| 0x00 || 0x14 || Magic number??
|-
|-
| 0x15 || L || 0x06 || Unique MAC Address of controller
| 0x15 || 0x06 || Unique MAC Address of controller
|-
|-
| 0x3B3 || L || 0x04 || Offset to Factory Firmware
| 0x3B3 || 0x04 || Offset to Factory Firmware
|-
|-
| 0x1FF4 || B || 0x08 || OTA Magic, if the controller is Over-The-Air updated.
| 0x1FF4 || 0x08 || OTA Magic, if the controller is Over-The-Air updated.
|-
|-
| 0x1FFC || L || 0x04 || Offset to OTA Firmware, if OTA Magic is valid.
| 0x1FFC || 0x04 || Offset to OTA Firmware, if OTA Magic is valid.
|-
|-
| 0x6000 || Mixed || 0x1000 || Factory configuration (see [[#Factory Configuration Sector|Factory Configuration Sector]])
| 0x2000 || 0x1000 || PairingInfo
|-
|-
| 0x8000 || Mixed || 0x1000 || User calibration (see [[#User Calibration Sector|User Calibration Sector]])
| 0x5000 || 0x1 || Shipment
|-
| 0x6000 || 0x1000 || [[#Factory Configuration Sector|Factory Configuration]]
|-
| 0x8000 || 0x1000 || [[#User Calibration Sector|User Calibration]]
|}
|}


Line 30: Line 33:
|-
|-
! Offset
! Offset
! Endianness
! Size
! Size
! Description
! Description
|-
|-
| 0x00 || B || 0x10 || IdentificationCode
| 0x00 || 0x10 || IdentificationCode
|-
|-
| 0x12 || B || 0x01 || [[#Type|Type]]
| 0x12 || 0x01 || [[#Type|Type]]
|-
|-
| 0x1B || B || 0x01 || FormatVersion
| 0x1B || 0x01 || FormatVersion
|-
|-
| 0x20 || B || 0x18 || [[#Cal1|Cal1]]
| 0x20 || 0x18 || [[#Cal1|Cal1]]
|-
|-
| 0x3D || B || 0x12 || [[#Cal2|Cal2]]
| 0x3D || 0x12 || [[#Cal2|Cal2]]
|-
|-
| 0x4F || B || 0x01 || Reserved
| 0x4F || 0x01 || Reserved
|-
|-
| 0x50 || B || 0x0D || [[#Design|Design]]
| 0x50 || 0x0D || [[#Design|Design]]
|-
|-
| 0x80 || B || 0x18 || [[#Model1|Model1]]
| 0x80 || 0x18 || [[#Model1|Model1]]
|-
|-
| 0x98 || B || 0x12 || [[#Model2|Model2]]
| 0x98 || 0x12 || [[#Model2|Model2]]
|}
|}


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|-
|-
! Offset
! Offset
! Endianness
! Size
! Size
! Description
! Description
|-
|-
| 0x10 || B || 0x18 || [[#UserCal1|UserCal1]]
| 0x10 || 0x18 || [[#UserCal1|UserCal1]]
|-
|-
| 0x28 || B || 0x18 || [[#UserCal2|UserCal2]]
| 0x28 || 0x18 || [[#UserCal2|UserCal2]]
|}
|}


Revision as of 21:37, 6 September 2022

The Joy-Con are internally called Ukyo (Left) and Sakyo (Right). The firmware is written in C++.

Joy-Con Firmware File

The length of the firmware must be 524288 bytes.

Offset Size Description
0x00 0x14 Magic number??
0x15 0x06 Unique MAC Address of controller
0x3B3 0x04 Offset to Factory Firmware
0x1FF4 0x08 OTA Magic, if the controller is Over-The-Air updated.
0x1FFC 0x04 Offset to OTA Firmware, if OTA Magic is valid.
0x2000 0x1000 PairingInfo
0x5000 0x1 Shipment
0x6000 0x1000 Factory Configuration
0x8000 0x1000 User Calibration

Factory Configuration Sector

Offset Size Description
0x00 0x10 IdentificationCode
0x12 0x01 Type
0x1B 0x01 FormatVersion
0x20 0x18 Cal1
0x3D 0x12 Cal2
0x4F 0x01 Reserved
0x50 0x0D Design
0x80 0x18 Model1
0x98 0x12 Model2

Type

Value Description
0x01 JoyLeft
0x02 JoyRight
0x03 SwitchProController
0x04 (DeviceType 4)
0x05 (DeviceType 5)
0x06 (DeviceType 6)
0x07 LarkHvc1
0x08 LarkHvc2
0x09 LarkNesLeft
0x0A LarkNesRight
0x0B Lucia
0x0C [12.0.0+] Lagon
0x0D [13.0.0+] Lager
0x0E [14.0.0+] (DeviceType 30)
0x21 FiftyLeft (DeviceType 14)
0x22 FiftyRight (DeviceType 18)

Cal1

Offset Size Description
0x00 0x18 SixAxisSensorCalibrationValue

Cal2

Offset Size Description
0x00 0x09 LeftAnalogStickCalibrationValue
0x09 0x09 RightAnalogStickCalibrationValue

Design

Offset Size Description
0x00 0x0C ControllerColor
0x0C 0x01 DesignVariation

ControllerColor

Offset Size Description
0x00 0x03 Body color of controller in RGB Hex (see Joy-Con Colors)
0x03 0x03 Button color of controller in RGB Hex (see Joy-Con Colors)
0x06 0x03 Left grip color of controller in RGB Hex
0x09 0x03 Right grip color of controller in RGB Hex

DesignVariation

Value Name
0x00 LuciaJ, LagerJ
0x01 LuciaE, LagerE
0x02 LuciaU, LagerU

Model1

Offset Size Description
0x00 0x06 SensorData
0x06 0x12 AnalogStickModuleParam

Model2

Offset Size Description
0x00 0x12 AnalogStickModuleParam

User Calibration Sector

Offset Size Description
0x10 0x18 UserCal1
0x28 0x18 UserCal2

UserCal1

Offset Size Description
0x00 0x02 UserCalMagicNumber
0x02 0x09 LeftAnalogStickCalibrationValue
0x0B 0x02 UserCalMagicNumber
0x0D 0x09 RightAnalogStickCalibrationValue
0x16 0x02 UserCalMagicNumber

UserCal2

Offset Size Description
0x00 0x18 SixAxisSensorCalibrationValue

Firmware Chunks

The firmware itself is stored in PatchRAM chunks, located at the Factory Offset or the OTA Offset. Each chunk has a Record Type, Size and Data.

Offset Endianness Size Description
0x00 L 0x01 Record type (see Record Types)
0x01 L 0x02 Size of data (size)
0x03 Mixed (size) Data

Record Types

Value Record name Description
0x08 REC8 ROM1 Patches (See Record 0x08 and Memory Regions)
0x0A RECA RAM (Ram Low and Ram High) Patches (See Record 0x0A and Memory Regions)
0x0B RECB Unknown
0xFE END End of chunk stream

Record 0x08

Offset Endianness Size Description
0x00 L 0x01 Index
0x01 L 0x04 Address
0x05 B 0x04 Data
0x09 L 0x02 Unk1?
0x0B L 0x02 Unk2?
0x0D L 0x02 Body size???

Record 0x0A

Offset Endianness Size Description Note
0x00 L 0x04 Address -
0x04 B (Note) Data To calculate the size do: chunk_datasize (See Firmware Chunks)-4

Record 0x0B

Offset Endianness Size Description
0x00 L 0x04 Address

Memory Regions

Offsets Description
0x00-0xC8000 ROM 1
0x260000-0x26C000 ROM 2
0xD0000-0x0x0DFFFF RAM Low
0x200000-0x247FFF RAM High
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