215
edits
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Line 105:
Line 105: + + + + + + + + + + + + + + + + + + + + + Line 203:
Line 224: − + Line 260:
Line 281: − + − + Line 312:
Line 333: − + + + + + + + Line 337:
Line 364: − + − + − + − + − + − + − + − + − bit15: ??? (Power Management related?) + + + + − bit24: ??? (???) + − + + − + − + − + Line 431:
Line 462: − + − + + + + + + + + + Line 446:
Line 485: + Line 470:
Line 510: − + − + Line 481:
Line 521: − byte 7: leap year counter / "watch error correction" register (unused)+ + + + + − + Line 490:
Line 534: − + + + − + − |- − | 0x3C − | s − | ro − | ??? − + Line 519:
Line 560: − + Line 539:
Line 580: − + Line 552:
Line 593: − + − + − + − + − + + + + + − | ??? − |- − | X? (=pitch) − | held vertically Line 619:
Line 660: − + − + Line 629:
Line 670: − + − + − first byte is wo Line 640:
Line 680: − + Line 648:
Line 688: − + − + − + + Line 659:
Line 700: − + − + − + − + − this byte is reset to 0 before an svcBreak takes effect+ Line 679:
Line 720: + +
Updated MCU pointer table register info
| 7
| 7
| Start/busy (0=Ready, 1=Start/busy)
| Start/busy (0=Ready, 1=Start/busy)
|}
== I2C_CNTEX ==
{| class="wikitable" border="1"
! BIT
! DESCRIPTION
|-
| 0-1
| ? Set to 2 normally.
|}
== I2C_SCL ==
{| class="wikitable" border="1"
! BIT
! DESCRIPTION
|-
| 0-5
| ?
|-
| 8-12
| ? Set to 5 normally.
|}
|}
| 0xa0
| 0xa0
| "i2c::EEP"
| "i2c::EEP"
| eeprom?
| HWCAL EEPROM ([[Hardware_calibration#Header|only present on dev units where SHA256 is used for HWCAL verification]])
|-
|-
| 15
| 15
| ds
| ds
| rw
| rw
| Top screen flicker
| Top screen Vcom
|-
|-
| 0x04
| 0x04
| ds
| ds
| rw
| rw
| Bottom screen flicker
| Bottom screen Vcom
|-
|-
| 0x05
| 0x05
| s
| s
| ro
| ro
| Flags: bit7-5 are read via [[MCU_Services|mcu::GPU]]. The rest of these are read via [[MCU_Services|mcu::RTC]]: bit4 = BatteryChargeState. bit3 = AdapterState. bit1 = ShellState.
| Flags: bit7-5 are read via [[MCU_Services|mcu::GPU]]. The rest of them are read via [[MCU_Services|mcu::RTC]].
bit01: ShellState
bit03: AdapterState
bit04: BatteryChargeState
bit05: Bottom screen backlight on
bit06: Top screen backlight on
bit07: GPU on(?)
|-
|-
| 0x10
| 0x10
| rw
| rw
| Interrupt mask for register 0x10 (0=enabled,1=disabled)
| Interrupt mask for register 0x10 (0=enabled,1=disabled)
bit00: Power button press
bit00: Power button press (for 27 "ticks")
bit01: Power button held (the 3DS turns off regardless after a fixed time)
bit01: Power button held (for 375 "ticks"; the 3DS turns off regardless after a fixed time)
bit02: HOME button press
bit02: HOME button press (for 5 "ticks")
bit03: HOME button release
bit03: HOME button release
bit04: WiFi switch button
bit04: WiFi switch button
bit05: Shell close
bit05: Shell close
bit06: Shell open
bit06: Shell open
bit07: Fatal hardware condition([[Services#Notifications|?]])
bit07: Fatal hardware condition([[Services#Notifications|?]]) (sent when the MCU gets reset by the Watchdog timer)
bit08: Charger removed
bit08: Charger removed
bit09: Charger plugged in
bit09: Charger plugged in
bit10: ??? (Power Management related?)
bit10: RTC alarm (when some conditions are met it's sent when the current day and month and year matches the current RTC time)
bit11: ??? (HID related)
bit11: ??? (accelerometer related)
bit12: HID update
bit12: HID update
bit13: Battery dead(?)
bit13: Battery percentage status change (triggered at 10%, 5%, and 0% while discharging)
bit14: ??? (Power Management related?)
bit14: Battery stopped charging (independent of charger state)
bit15: Battery started charging
Nonmaskable(?) interrupts
bit16: ???
bit17: ??? (opposite even for bit16)
bit22: Volume slider position change
bit22: Volume slider position change
bit23: ??? Register 0x0E update
bit25: ??? (???)
bit24: ??? (the off event for below bit)
bit25: ??? (triggered when something related to the GPU is turned on, most likely backlight)
bit26: ??? (???)
bit26: ??? (???)
bit27: ??? (???)
bit27: ??? (???)
bit28: ??? (???)
bit28: ??? (???)
bit29: ??? (???)
bit29: ??? backlight on?
bit30: forced off by mcu sysmodule
bit30: bit set by mcu sysmodule
bit31: forced off by mcu sysmodule
bit31: bit set by mcu sysmodule
|-
|-
| 0x1C
| 0x1C
| 0x29
| 0x29
| sd(5)
| sd(5)
| rw
| ??
| Power LED state + some extra data
| Power mode indicator state (read-write)
1 = forced default blue
2 = sleep mode animation
3 = "power off" mode
4 = disable blue power LED and turn on red power LED
5 = disable red power LED and turn on blue power LED
6 = animate blue power LED off and flash red power LED
anything else = automatic mode
The other 4 bytes (32bits) affect the pattern of the red power LED (write only)
|-
|-
| 0x2A
| 0x2A
1 = slowly blinking
1 = slowly blinking
2 = constantly on
2 = constantly on
3 = "TWL" mode
4 = flash once
4 = flash once
5 = delay before changing to 2
5 = delay before changing to 2
|-
|-
| 0x30
| 0x30
- 0x37
- 0x36
| s
| ds
| rw
| rw
| RTC time (system clock). 7 bytes are read from this. The upper nibble of each byte encodes 10s (BCD), so each byte is post-processed with (byte & 0xF) + (10 * (byte >> 4)).
| RTC time (system clock). 7 bytes are read from this. The upper nibble of each byte encodes 10s (BCD), so each byte is post-processed with (byte & 0xF) + (10 * (byte >> 4)).
byte 5: months
byte 5: months
byte 6: years
byte 6: years
|-
| 0x37
| s
| rw
| RTC time byte 7: leap year counter / "watch error correction" register (unused in code)
|-
|-
| 0x38
| 0x38
- 0x3A
- 0x3C
| s
| s
| rw
| rw
byte 0: minutes
byte 0: minutes
byte 1: hours
byte 1: hours
byte 2: week
byte 2: day
byte 3: month
byte 4: year
|-
|-
| 0x3B
| 0x3B
| s
| s
| rw
| rw
| Register 0x3B could be used to upload [[MCU_Services#MCU_firmware_versions|MCU firmware]] if some conditions are met.
| Could be used on very old MCU_FIRM versions to upload [[MCU_Services#MCU_firmware_versions|MCU firmware]] if some conditions are met.
|-
|-
| 0x3D
| 0x3D
0x3E
0x3E
| s
| ds
| ro
| ro
| RTC tick counter / "ITMC" (when resets to 0 the seconds increase)
| RTC tick counter / "ITMC" (when resets to 0 the seconds increase)
| s
| s
| rw
| rw
| Pedometer state (?)
| Gyro sampling mode. Bits 0 and 1 control the gyro. If bits 0 or 1 are non-zero then gyro sampling is enabled.
|-
|-
| 0x41
| 0x41
| s
| s
| rw
| rw
| ???, accelometer related
| ???, pedoometer related(?)
|-
|-
| 0x45
| 0x45
! V=0xC0
! V=0xC0
|-
|-
| Y (=roll)
| X (left/right)
| held vertically
| held vertically
| vertical right side
| rotated or tilted left
| vertical left side
| rotated or tilted right
|-
|-
| Z? (=yaw)
| Y (forwards/backwards)
| ???
| laid flat
| held up
| helf up upside-down
|-
| Z (???)
| ???
| ???
| ???
| ???
| ???
| ???
| 0x5A
| 0x5A
| s
| s
| rw
| ro/rw
| ?
| Invalid, do not use! On newer MCU_FIRM versions this is unused, but on older MCU_FIRM versions this is a read-only counter.
|-
|-
| 0x5B
| 0x5B
|-
|-
| 0x60
| 0x60
| ds(1)
| ds
| ro
| rw
| Looping queue register
| Looping queue register
Writing to first byte resets the queue position to the nth element
Writing to first byte resets the queue position to the nth element
| rw
| rw
| Writing to this register pushes values on top of register 0x60's stack. Reading from this register doesn't advance the stack.
| Writing to this register pushes values on top of register 0x60's stack. Reading from this register doesn't advance the stack.
The first byte is used to store flags for managing FIRM/NS state - bit0 = "WirelessDisabled", bit1 = "SoftwareClosed", bit2 = "PowerOffInitiated", bit4 = "LegacyJumpProhibited". This register survives power-off, but does not seem to be saved to non-volatile storage (does not survive battery pulls). This register doesn't seem to actually control MCU behaviour by itself, it just seems to be used for storing arbitrary data.
The first byte is used to store flags for managing FIRM/NS state - bit0 = "WirelessDisabled", bit1 = "SoftwareClosed", bit2 = "PowerOffInitiated", bit4 = "LegacyJumpProhibited". This register survives a power-off, but it resides in RAM, so its contents get lost on battery pulls. This register doesn't seem to actually control MCU behaviour by itself, it just seems to be used for storing arbitrary data.
|-
|-
| 0x62 - 0x7E
| 0x62 - 0x7E
|-
|-
| 0x7F
| 0x7F
| d(0x13)
| d(9-0x13)
| ro
| ro
| Various system state information.
| Various system state information (debug pointer table)
byte 0x06: battery related? (seems to decrease while charging and increase while discharging)
byte 0x06: battery related? (seems to decrease while charging and increase while discharging)
byte 0x09: system model (see [[Cfg:GetSystemModel#System_Model_Values|Cfg:GetSystemModel]] for values)
byte 0x09: system model (see [[Cfg:GetSystemModel#System_Model_Values|Cfg:GetSystemModel]] for values)
byte 0x0A: power LED related? 0 is off, 1 is red
byte 0x0A: Red Power LED mode (0 = off, 1 = on)
byte 0x0B: Blue Power LED intensity (0x00 - 0xFF)
byte 0x0D: RGB LED red intensity
byte 0x0D: RGB LED red intensity
byte 0x0E: RGB LED green intensity
byte 0x0E: RGB LED green intensity
byte 0x11: WiFi LED brightness
byte 0x11: WiFi LED brightness
byte 0x12: raw button states?
byte 0x12: raw button states?
bit0: unset while power button is held
bit0: unset while Power button is held
bit1: unset while home button is held
bit1: unset while HOME button is held
bit2: unset while Wifi slider is held
bit2: unset while WiFi slider is held
bit5: unset while the charging LED is active
bit5: unset while the charging LED is active
bit6: unset while charger is plugged in
bit6: unset while charger is plugged in
On MCU_FIRM major version 1 the size of this is 9, reading past the 9th byte will yield AA instead of FF.
|-
|-
| 0x80
| 0x80
Non-shared (dynamic) register: it's a register whose contents separate from the shared register pool. Messing with these registers will not affect the shared register pool at all.
Non-shared (dynamic) register: it's a register whose contents separate from the shared register pool. Messing with these registers will not affect the shared register pool at all.
On old versions of MCU_FIRM none of the invalid registers are masked away by the read handler function, but are still read-only. Newer MCU_FIRM versions return the hardcoded value FF instead.
== Device 5 & 6 ==
== Device 5 & 6 ==