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82 lines
2.5 KiB
82 lines
2.5 KiB
Infinity
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========
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Massdrop Infinity Keyboard:
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https://www.massdrop.com/buy/infinity-keyboard-kit
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kiibohd controller(MD1):
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https://github.com/kiibohd/controller
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DFU bootloader:
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https://github.com/kiibohd/controller/tree/master/Bootloader
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Program with bootloader:
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$ dfu-util -D kiibohd.dfu.bin
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Pinout:
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https://github.com/kiibohd/controller/blob/master/Scan/MD1/pinout
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MCHCK compatible:
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https://mchck.org/about/
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MCU Freescale MK20DX128VLF5 48-QFP:
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http://cache.freescale.com/files/32bit/doc/data_sheet/K20P48M50SF0.pdf
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Pin Usage
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=========
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Key Matrix:
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Strobe(output high): PTB0 PTB1 PTB2 PTB3 PTB16 PTB17 PTC4 PTC5 PTD0
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Sense(input with pull-down): PTD1 PTD2 PTD3 PTD4 PTD5 PTD6 PTD7
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SWD pinout:
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SWD_CLK(PTA0) SWD_DIO(PTA3)
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SWD pins are placed next to reset button; SWD_CLK, SWD_DIO, GND, VCC from top.
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Note that RESET is also needed to get full control with OpenOCD.
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LED:
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PTA19(turns on with output high)
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Memory map
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==========
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kiibohd bootloader: Lib/mk20dx128vlf5.bootloader.ld
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0x0000_0000 +-------------------+ -----------------+---------------+ Vector table
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| .vectors | ------------. | StackPointer0 | of Bootloader
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| .startup | \ | ResetHandler1 |
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| .rodata | `--+---------------+ 0xF8
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0x0000_0400 | .flashconfig(0x10)|
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_0410 | .text |
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| .init |
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0x0000_1000 +-------------------+ -----------------+---------------+ Vector table
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| _app_rom | ------------. | | of App
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| | \ | |
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| | `--+---------------+
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~ ~
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0x07FF_FFFF +-------------------+ 128KB
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0x1FFF_E000 +-------------------+ -----------------+---------------+ Vector table
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_E0F8 | | ------------. | | of App(copied)
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| | \ | |
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| | `--+---------------+ mbed NVIC
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| RAM |
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| 8KB|
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0x2000_0000 +-------------------+
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| RAM |
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| 8KB|
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0x2000_2000 +-------------------+ _estack
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