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mLine 105:
Line 105: + + + + + + + + + + + + + + + + + + + + + Line 337:
Line 358: − + − + − + − + − + − + − + − bit15: ??? (Power Management related?) + + + + − bit24: ??? (???) + − + + − + − + − + Line 471:
Line 496: − + Line 484:
Line 509: − + − + − + − + + + − + − |- − | 0x3C − | s − | ro − | ??? − + Line 619:
Line 641: − + − + Line 648:
Line 670: − + Line 666:
Line 688: + + Line 679:
Line 703: + +
no edit summary
| 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.
|}
|}
| 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 dead(?)
bit14: ??? (Power Management related?)
bit14: Battery stop charging(?) (independent of charger state)
bit15: Battery start 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)
bit26: ??? (???)
bit26: ??? (???)
bit27: ??? (???)
bit27: ??? (???)
bit28: ??? (???)
bit28: ??? (???)
bit29: ??? (???)
bit29: Battery percentage status change (triggered at 10%, 5%, and 0% while discharging)
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
| 0x30
| 0x30
- 0x37
- 0x37
| 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)).
|-
|-
| 0x38
| 0x38
- 0x3A
- 0x3C
| s
| s
| rw
| rw
| RTC alarm registers
| RTC alarm registers
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)
| 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
|-
|-
| 0x7F
| 0x7F
| d(0x13)
| d(9-0x13)
| ro
| ro
| Various system state information.
| Various system state information.
this byte is reset to 0 before an svcBreak takes effect
this byte is reset to 0 before an svcBreak takes effect
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 ==