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- Infinity
- ========
- Massdrop Infinity Keyboard:
- https://www.massdrop.com/buy/infinity-keyboard-kit
-
- kiibohd controller(MD1):
- https://github.com/kiibohd/controller
-
- DFU bootloader:
- https://github.com/kiibohd/controller/tree/master/Bootloader
-
- Program with bootloader:
- $ dfu-util -D kiibohd.dfu.bin
-
- Pinout:
- https://github.com/kiibohd/controller/blob/master/Scan/MD1/pinout
-
- MCHCK compatible:
- https://mchck.org/about/
-
- MCU Freescale MK20DX128VLF5 48-QFP:
- http://cache.freescale.com/files/32bit/doc/data_sheet/K20P48M50SF0.pdf
-
-
-
- Pin Usage
- =========
- Key Matrix:
- For v1.0 (without LED support)
- strobe(output high): ptb0 ptb1 ptb2 ptb3 ptb16 ptb17 ptc4 ptc5 ptd0
- sense(input with pull-down): ptd1 ptd2 ptd3 ptd4 ptd5 ptd6 ptd7
- For v1.1a (with LED support)
- strobe(output high): ptc0 ptc1 ptc2 ptc3 ptc4 ptc5 ptc6 ptc7 ptd0
- sense(input with pull-down): ptd1 ptd2 ptd3 ptd4 ptd5 ptd6 ptd7
-
-
- SWD pinout:
- SWD_CLK(PTA0) SWD_DIO(PTA3)
- SWD pins are placed next to reset button; SWD_CLK, SWD_DIO, GND, VCC from top.
- Note that RESET is also needed to get full control with OpenOCD.
-
- LED:
- PTA19(turns on with output high)
-
-
-
- Memory map
- ==========
- kiibohd bootloader: Lib/mk20dx128vlf5.bootloader.ld
- 0x0000_0000 +-------------------+ -----------------+---------------+ Vector table
- | .vectors | ------------. | StackPointer0 | of Bootloader
- | .startup | \ | ResetHandler1 |
- | .rodata | `--+---------------+ 0xF8
- 0x0000_0400 | .flashconfig(0x10)|
- _0410 | .text |
- | .init |
- 0x0000_1000 +-------------------+ -----------------+---------------+ Vector table
- | _app_rom | ------------. | | of App
- | | \ | |
- | | `--+---------------+
- | |
- ~ ~
- | |
- 0x07FF_FFFF +-------------------+ 128KB
-
-
- 0x1FFF_E000 +-------------------+ -----------------+---------------+ Vector table
- _E0F8 | | ------------. | | of App(copied)
- | | \ | |
- | | `--+---------------+ mbed NVIC
- | |
- | RAM |
- | 8KB|
- 0x2000_0000 +-------------------+
- | |
- | |
- | |
- | |
- | RAM |
- | 8KB|
- 0x2000_2000 +-------------------+ _estack
-
-
-
-
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