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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:
+ Strobe(output high): PTB0 PTB1 PTB2 PTB3 PTB16 PTB17 PTC4 PTC5 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
+
+
+
+