Nintendo Switch Brew

Bus services

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gpio

This is "nn::gpio::IManager".

Cmd Name
0 #OpenSessionForDev
1 #OpenSession
2 #OpenSessionForTest
3 [1.0.0-6.2.0] IsWakeEventActive
4 [1.0.0-6.2.0] GetWakeEventActiveFlagSet
5 [1.0.0-6.2.0] SetWakeEventActiveFlagSetForDebug
6 SetWakePinDebugMode
7 [5.0.0+] #OpenSession2
8 [5.0.0+] IsWakeEventActive2
9 [5.0.0+] SetWakeEventActiveFlagSetForDebug2
10 [6.0.0+]

Known Devices

GpioPadName GpioPadDescriptor DeviceCode Tegra (port, pin) Usage Direction Used by
0x01 0xCC 0x33000002 Z, 4 Audio Codec (ALC5639) Power (CODEC_LDO_EN_TEMP) Out Audio services, Fatal services
0x02 0x24 0x3C000001 E, 4 SDCard Power (POW_SD_EN) Out Filesystem services
0x03 0x3C 0x37000002 H, 4 Bluetooth Reset (BT_RST_PH4) Out Bluetooth Driver services
0x04 0xDA 0xC9000402 BB, 2 Secondary Boot Device Configration (RAM_CODE3) In
0x05 0xDB 0x3C000402 BB, 3 GcAsic Reset (GC_RST) Out Filesystem services
0x06 0xDC 0x33000003 BB, 4 Audio Codec (ALC5639) Alert (CODEC_ALERT) In Audio services
0x07 0x25 0x3C000401 E, 5 GcAsic Power (POW_GC) Out
0x08 0x90 0x350000CA S, 0 Debug Pad Detect (DEBUG_CONTROLLER_DET) In HID services
0x09 0x91 0x39000407 S, 1 Battery Charge Status (BATT_CHG_STATUS) In
0x0A 0x96 0x39000003 S, 6 Charger IC (BQ24193) Charge Enable (BATT_CHG_ENABLE_N) Out PTM services
0x0B 0x97 0x3D000002 S, 7 CPU Fan Tachometer (FAN_TACH) In
0x0C 0x26 0x3500040B E, 6 Joy-Con(L) IsAttached (insertion, Joy-Con pin 5/console TX, pulled low on insert?) (EXTCON_DET_S) In HID services
0x0D 0x05 0x39000401 A, 5 Fan Enable (normal) (VDD50A_EN) Out PTM services
0x0E 0x78 0xCA000402 P, 0 SDEV Coax Select (SDEV_COAX_SEL_1) In
0x0F 0x93 0x3C000403 S, 3 GcAsic Card Detect (GC_CD) In Filesystem services
0x10 0x7D 0xC900040B P, 5 PROD_TYPE_0 In
0x11 0x7C 0xC900040C P, 4 PROD_TYPE_1 In
0x12 0x7B 0xC900040D P, 3 PROD_TYPE_2 In
0x13 0x7A 0xC900040E P, 2 PROD_TYPE_3 In
0x14 0xBC 0x3E000002 X, 4 Temperature Sensor (TEMP_ALERT) In
0x15 0xAE 0x33000004 V, 6 Audio Codec (ALC5639) Headphone Detect (CODEC_HP_DET_IRQ) In Audio services
0x16 0xBA 0x35000041 X, 2 MOTION_INT_PX2 In
0x17 0xB9 0x35000036 X, 1 TouchPanel IRQ (TP_IRQ) (unused - polled instead) In HID services
0x18 0xBD 0x35000001 X, 5 Power Button (BUTTON_POWER_ON_PX5) In
0x19 0xBE 0x35000002 X, 6 Volume Up (BUTTON_VOL_UP_PX6) In Boot2, Audio services
0x1A 0xBF 0x35000003 X, 7 Volume Down (BUTTON_VOL_DOWN_PX7) In Boot2, Audio services
0x1B 0xC0 0x39000034 Y, 0 Fuel Gauge IC (MAX17050) IRQ (BATT_MGIC_IRQ) In PTM services
0x1C 0xC1 0x35000004 Y, 1 Recovery Mode Key (BUTTON_HOME_PY1) In
0x1D 0xA9 0x3400003E V, 1 Backlight Enable (LCD_BL_EN_PV1) Out NV services, Backlight services
0x1E 0xAA 0x34000033 V, 2 Backlight Reset (LCD_RST_PV2) Out NV services
0x1F 0x55 0x040000CC K, 5 USB-PD Controller (RHOM BM92T30MWV) VCONN Power (PD_VCONN_EN) Out PTM services, USB services
0x20 0xAD 0x040000CA V, 5 USB-PD Controller (RHOM BM92T30MWV) Reset (PD_RST) Out USB services
0x21 0xC8 0x39000002 Z, 0 Charger IC (BQ24193) IRQ (BQ24193_IRQ) In PTM services
0x22 0xCA 0xCA000401 Z, 2 SDEV Coax Select (SDEV_COAX_SEL_0) In
0x23 0xCB 0x3C000003 Z, 3 SDCard Write Protect (SD_WP) In
0x24 0x4F 0x35000035 J, 7 TouchPanel Reset (TP_RST) Out HID services
0x25 0x50 0x37000401 K, 0 BT_GPIO_2 In
0x26 0x51 0x37000402 K, 1 BT_GPIO_3 In
0x27 0x52 0x37000403 K, 2 BT_GPIO_4 In
0x28 0x54 0x040000CB K, 4 USB-PD Controller (RHOM BM92T30MWV) IRQ (PD_IRQ) In USB services
0x29 0x56 0x3E000003 K, 6 POW_VCPU_INT In
0x2A 0x57 0x3E000004 K, 7 MAX77621_GPU_INT In
0x2B 0x53 0x35000402 K, 3 Joy-Con(R) Charge Detect (EXTCON_CHG_U) Out HID services
0x2C 0xE3 0x3500040C CC, 3 Joy-Con(L) Charge Detect (EXTCON_CHG_S) Out HID services
0x2D 0x38 0x38000003 H, 0 WIFI_RF_DISABLE Out
0x2E 0x39 0x38000002 H, 1 WIFI_RST_PH1 Out Wlan services, PCIe services
0x2F 0x3B 0x37000003 H, 3 AP_WAKE_BT_PH3 Out Bluetooth Driver services
0x30 0x3D 0x37000004 H, 5 BT_WAKE_AP In
0x31 0x3F 0x37000404 H, 7 BT_GPIO_5 Out
0x32 0x40 0x34000034 I, 0 Backlight +5V (LCD_VDD_P_EN) Out NV services
0x33 0x41 0x34000035 I, 1 Backlight -5V (LCD_VDD_N_EN) Out NV services
0x34 0x3E 0x35000401 H, 6 Joy-Con(R) IsAttached (insertion, Joy-Con pin 5/console TX, pulled low on insert?) (EXTCON_DET_U) In HID services
0x35 0xE2 0xC9000401 CC, 2 Secondary Boot Device Configration (RAM_CODE2) In
0x36 0xE4 0x39000402 CC, 4 Fan Enable (high power) (VDD50B_EN) Out PTM services
0x37 0x3A 0x38000004 H, 2 WIFI_WAKE_HOST In
0x38 0xC9 0x3C000002 Z, 1 SDCard Card Detect (SD_CD) In Filesystem services
0x39 0x4D 0x39000404 J, 5 Charger IC (BQ24193) OTG Charge Select (OTG_FET_1) Out PTM services, USB services
0x3A 0x58 0x39000405 L, 0 Charger IC (BQ24193) OTG Charge Select (OTG_FET_2) Out PTM services, USB services
0x3B 0x3E 0x35000403 H, 6 Joy-Con(R) Wake Detect (EXTCON_DET_U) In
0x3C 0x26 0x3500040D E, 6 Joy-Con(L) Wake Detect (EXTCON_DET_S) In
0x3D -1 0x39000406
0x3E 0x33 0x35000404 G, 3 Joy-Con(R) CTS (checked low) (EXT_UART2_CTS) In HID services
0x3F 0x1C 0x3500040E D, 4 Joy-Con(L) CTS (checked low) (EXT_UART3_CTS) In HID services
0x40 0xD9 0x39000408 BB, 1 5V Step-Down Regulator Power (5V_STEPDOWN_EN) Out (SDEV only)
0x41 0x0C 0x04000401 B, 4 USB Root Port 2 Over Current (USB_B2_OC) In (SDEV only)
0x42 0x0D 0x39000409 B, 5 5V Step-Down Regulator Power Good Flag (5V_STEPDOWN_PG) In (SDEV only)
0x43 0x21 0x04000402 E, 1 USB Power (USB_A_EN) Out USB services (SDEV only)
0x44 0x27 0x04000403 E, 7 USB Power Flag (USB_A_FLAG) In USB services (SDEV only)
0x45 0x92 0x04000404 S, 2 USB Root Port 3 Over Current (USB_B3_OC) In USB services (SDEV only)
0x46 0x95 0x04000405 S, 5 USB Root Port 3 Power (USB_B3_EN) Out USB services (SDEV only)
0x47 0x98 0x04000406 T, 0 USB Root Port 2 Power (USB_B2_EN) Out USB services (SDEV only)
0x48 0x10 0x34000004 C, 0 HDMI 5V (HDMI_5V_EN) Out [2.0.0+] NV services (SDEV only)
0x49 0x11 0x04000407 C, 1 USB Root Port 1 Power (USB_B1_EN) Out USB services (SDEV only)
0x4A 0x12 0x34000005 C, 2 HDMI/Power Delivery Switch (HDMI_PD_TR_EN) Out NV services (SDEV only)
0x4B 0x42 0x3D000003 I, 2 FAN_EN Out (SDEV only)
0x4C 0xE6 0x04000408 CC, 6 USB Root Port 1 Over Current (USB_B1_OC) In (SDEV only)
[2.0.0+] 0x4D 0xAC 0x3D000001 V, 4 PWM_FAN Out (SDEV only)
[2.0.0+] 0x4E 0xE1 0x34000006 CC, 1 HDMI Hot Plug Detect (HDMI_INT_DP_HPD_PCC1) In NV services (SDEV only)
[5.0.0+] 0x4F 0x56 0x3E000003 K, 6 MAX77812_IRQ
[6.0.0+] 0x50 0x20 0xCA000001 E, 0
[6.0.0+] 0x51 0x21 0xCA000002 E, 1
[6.0.0+] 0x52 0x22 0xCA000003 E, 2
[6.0.0+] 0x53 0x23 0xCA000004 E, 3
[6.0.0+] 0x54 0x4C 0x36000004 J, 4 NFC_IRQ
[6.0.0+] 0x55 0x57 0x36000003 K, 7 NFC_RST
[6.0.0+] 0x56 0x94 0x35000415 S, 4 MCU_IRQ
[6.0.0+] 0x57 0x98 0x35000416 T, 0 MCU_BOOT
[6.0.0+] 0x58 0x99 0x35000417 T, 1 MCU_RST
[6.0.0+] 0x59 0xBB 0x39000403 X, 3 VDD5V3_EN
[6.0.0+] 0x5A 0xE5 0x35000418 CC, 5 MCU_POR
[6.0.0+] 0x5B 0xAB 0x35000005 V, 3
[6.0.0+] 0x5C 0x4E 0x36000002 J, 6
[7.0.0+] - 0x32 0x35000406 G, 2 Joy-Con(R) RTS
[7.0.0+] - 0x1B 0x35000410 D, 3 Joy-Con(L) RTS
[7.0.0+] - 0x17 0x3500041B
[7.0.0+] - 0x18 0x3500041C
[7.0.0+] - 0x15 0x3500041D
[7.0.0+] - 0x16 0x3500041E
[8.0.0+] - 0x27 0x35000415 S, 4 MCU_IRQ (duplicate)

GpioPadDescriptor

Bits Description
7-5 Controller index
4-3 Port index
2-0 Pin number

OpenSessionForDev

Takes a raw #GpioPadDescriptor and returns a #IPadSession session for it.

OpenSession

Same thing as #OpenSessionForDev except it takes a GpioPadName which is then converted to a #GpioPadDescriptor. Returns an #IPadSession session.

OpenSessionForTest

Same as #OpenSession but panics on failure.

OpenSession2

Same as #OpenSession but takes a DeviceCode instead of a GpioPadName.

IPadSession

This is "nn::gpio::IPadSession".

Cmd Name
0 SetDirection
1 GetDirection
2 SetInterruptMode
3 GetInterruptMode
4 SetInterruptEnable
5 GetInterruptEnable
6 GetInterruptStatus
7 ClearInterruptStatus
8 SetValue
9 GetValue
10 BindInterrupt
11 UnbindInterrupt
12 SetDebounceEnabled
13 GetDebounceEnabled
14 SetDebounceTime
15 GetDebounceTime
16 [4.0.0+] SetValueForSleepState
17 [6.0.0+] GetValueForSleepState

i2c, i2c:pcv

This is "nn::i2c::IManager".

Cmd Name
0 OpenSessionForDev
1 OpenSession
[1.0.0-5.1.0] 2 HasDevice
[1.0.0-5.1.0] 3 HasDeviceForDev
4 [6.0.0+] OpenSession2

Known Devices

Name DeviceCode Port:Addr Is10bit Speed Max Retries Retry Delay Usage Used by
0 0x350000C9 0:52 N 100000 0 0 DebugPadDriver HID services
1 0x35000033 2:49 N 400000 0 0 TouchPanel HID services
2 0x3E000001 0:4c N 100000 0 0 Temperature Sensor (TMP451 or NCT72) PTM services
3 0x3E000001 0:4c N 100000 0 0 Temperature Sensor (TMP451 or NCT72) (duplicate)
4 0x33000001 0:1c N 100000 0 0 Audio Codec (ALC5639) Audio services, Fatal services
5 0x3B000001 4:68 N 400000 3 5000000 PMIC RTC (max77620_rtc0), max77620_irq0 PCV services
6 0x3A000001 4:3c N 400000 3 5000000 PMIC (MAX77620), max77620_irq0 PCV services
7 0x3A000003 4:1b N 400000 3 5000000 Sub-PMIC for CPU (max77621_cpu) PCV services
8 0x3A000004 4:1c N 400000 3 5000000 Sub-PMIC for GPU (max77621_gpu) PCV services
9 0x39000001 0:6b N 100000 3 5000000 Charger IC (BQ24193) PTM services
10 0x39000033 0:36 N 100000 3 5000000 Fuel Gauge IC (MAX17050) PCV services, PTM services
11 0x040000C9 0:18 N 100000 3 5000000 USB-PD controller (RHOM BM92T30MWV) USB services
12 0x3F000401 1:40 N 400000 3 5000000 Power Monitor (ina226_V_VDD15V0-HB) Factory testing
13 0x3F000001 1:41 N 400000 3 5000000 Power Monitor (ina226_V_VSYS-CPU-DS) Factory testing
14 0x3F000002 1:44 N 400000 3 5000000 Power Monitor (ina226_V_VSYS-GPU-DS) Factory testing
15 0x3F000003 1:45 N 400000 3 5000000 Power Monitor (ina226_V_VSYS-DDR-DS) Factory testing
16 0x3F000402 1:46 N 400000 3 5000000 Power Monitor (ina226_V_VSYS-AP) Factory testing
17 0x3F000403 1:47 N 400000 3 5000000 Power Monitor (ina226_V_VSYS-BL-DS) Factory testing
18 0x35000047 1:29 N 400000 3 5000000 Ambient Light Sensor (BH1730) Backlight services
19 0x3F000404 1:48 N 400000 3 5000000 Power Monitor (ina226_CORE) Factory testing
20 0x3F000405 1:49 N 400000 3 5000000 Power Monitor (ina226_Soc-1V8) Factory testing
21 0x3F000406 1:4a N 400000 3 5000000 Power Monitor (ina226_LPDDR4-1V8) Factory testing
22 0x3F000407 1:4b N 400000 3 5000000 Power Monitor (ina226_REG1V32) Factory testing
23 0x3F000408 1:4d N 400000 3 5000000 Power Monitor (ina226_VDD3V3-SYS) Factory testing
[2.0.0+] 24 0x34000001 3:50 N 100000 0 0 HDMI DDC NV services
[2.0.0+] 25 0x34000002 3:54 N 100000 0 0 HDMI SCDC NV services
[2.0.0+] 26 0x34000003 3:3a N 100000 0 0 HDMI HDCP NV services
[4.0.0+] 27 0x3A000005 4:a4 N 400000 0 0 Fan (Fan53528)
[4.0.0+] 28 0x3A000002 4:31 N 400000 0 0 PMIC (Max77812)
[4.0.0+] 29 0x3A000002 4:33 N 400000 0 0 PMIC (Max77812)
[4.0.0+] 30 0x3F000409 1:4e N 400000 3 5000000 Power Monitor (ina226_V_VDD-DDR-0V6)
[8.0.0+] 31 0x36000001 1:08 N 400000 3 5000000

OpenSessionForDev

Takes an u32 port, an u16 addr, an AddressingMode (1 for 10-bit, 0 otherwise) and a SpeedMode (400000 or 100000). Returns a #II2cSession session.

OpenSession

Takes an I2cDevice and returns a #II2cSession session for it.

HasDevice

Takes an I2cDevice and returns true if the device exists or false otherwise.

HasDeviceForDev

Takes an u32 port, an u16 addr, an AddressingMode (1 for 10-bit, 0 otherwise) and a SpeedMode (400000 or 100000). Returns true if the device exists or false otherwise.

OpenSession2

Same as #OpenSession but takes a DeviceCode instead of a I2cDevice.

II2cSession

This is "nn::i2c::ISession".

Cmd Name
[1.0.0-5.1.0] 0 Send
[1.0.0-5.1.0] 1 Receive
[1.0.0-5.1.0] 2 ExecuteCommandList
10 #SendAuto
11 ReceiveAuto
12 #ExecuteCommandListAuto
13 [6.0.0+]

SendAuto

Takes bytes to write in either a static buffer or a receive buffer, returns an error code for success

ExecuteCommandListAuto

Takes a command list from either a static buffer or a receive buffer, returns data in either a static (or recieve?) buffer.

Commands

  • 0x40 [u8 len] <bytes> - Write bytes to device
  • 0xC1 [u8 len] - Receive bytes from device

uart

This is "nn::uart::IManager".

Cmd Name
0 #DoesUartExist
1 DoesUartExistForTest
2 #IsUartBaudrateValid
3 IsUartBaudrateValidForTest
4 #IsSomethingUartValid
5 IsSomethingUartValidForTest
6 #GetSession
7 IsSomethingUartValid2
8 IsSomethingUartValid2ForTest
9 [7.0.0+] IsSomethingUartValid3
10 [7.0.0+] IsSomethingUartValid3ForTest

DoesUartExist

Takes a u32 #UartPort and returns boolean success value

IsUartBaudrateValid

Takes a u32 #UartPort and a u32 baudrate and returns boolean success value

IsSomethingUartValid

Takes a u32 #UartPort and returns boolean success value

GetSession

Takes a u32 #UartPort and returns an #IPortSession

UartPort

Name Port Usage
1 UART-D Bluetooth
2 UART-B Joy-Con(R)
3 UART-C Joy-Con(L)

IPortSession

This is "nn::uart::IPortSession".

Cmd Name
0 OpenSession
1 OpenSessionForTest
2
3
4
5
6
7

[7.0.0+] OpenSession/OpenSessionForTest now takes an additional 0x8-bytes of input.

Port Mapping

OpenSession translates user IDs to to the #UartPort index.

OpenSessionForTest takes the port index verbatim.

pwm

This is "nn::pwm::IManager".

Cmd Name
0 OpenSessionForDev
1 OpenSession
2 [6.0.0+]

Known Channels

Name Interface Usage Used by
1 PWM Channel 1 Fan PTM services
2 PWM Channel 0 Backlight Backlight services, NV services
3 PMC Blinker

IChannelSession

This is "nn::pwm::IChannelSession".

Cmd Name
0 SetPeriod
1 GetPeriod
2 SetDuty
3 GetDuty
4 SetEnabled
5 GetEnabled
6 [6.0.0+]
7 [6.0.0+]

pinmux

This is "nn::pinmux::IManager".

Cmd Name
0 OpenSession

ISession

This is "nn::pinmux::ISession".

Cmd Name
0 SetPinAssignment
1 GetPinAssignment
2 SetPinAssignmentForHardwareTest

sasbus

This is "nn::sasbus::IManager".

Cmd Name
0 OpenSession

ISession

This is "nn::sasbus::ISession".

Cmd Name
0
1
2
3
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