156 lines
3.8 KiB
HTML
156 lines
3.8 KiB
HTML
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Keymap Editor for TMK firmware
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==============================
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- [HHKB](hhkb/index.html)
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Instruction
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-----------
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Limitation
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----------
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TODO & MEMO
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------------
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### Edit action for FN key
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### Better source output
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KEYMAP macro
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### Actionmap support
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### Macro editor
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### Layer operation
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copy, swap, set all, clear...
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### Compress share URL
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lz-string.js
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### Bootloader jump doesn't work
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### Better Keyobard graphic
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### Keyobard layout screenshot
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- HTML5 canvas
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- png image file output
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ldscript and Flash Memory
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-------------------------
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`ldscript_keymap_avr5.x` is ldscript and located at top directory. Using
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Flash Memroy Map of ATMega32U4(32KB)
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+--------------------+ 0x0000
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| .vectors | 0xac (43vectors * 4bytes)
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| .progmem | PROGMEM variables and PSTR
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| .init0-9 |
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| .text | code
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| .fini9-0 |
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| | > text region
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|--------------------| _etext
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| .data |
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| .bss |
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| .noinit |
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| | > data region
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|--------------------| 0x6800
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| .keymap.fn_actions |
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| .keymap.keymaps | > keymap region(2KB)
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|--------------------| 0x7000
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| bootloader | 4KB
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+--------------------+ 0x7FFF
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Keymap(8bit code)
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-----------------
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`const uint16_t fn_actions[] __attribute__ ((section (".keymap.fn_actions")))`
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`const uint8_t keymaps[8][ROW][COL] __attribute__ ((section (".keymap.keymaps")))`
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These arrays are placed at fixed address in .keymap section:
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actions[] -> +-------------+
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| action x 32 |
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keymaps[] -> |-------------|
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| keymap 0 |
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|-------------|
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| keymap 1 |
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|-------------|
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| keymap 2 |
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|-------------|
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| keymap 3 |
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|-------------|
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| : : |
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Actionmap(16bit code)
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---------------------
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`const uint16_t actionmaps[] __attribute__ ((section (".keymap.actionmaps")))`
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All key action can be defined in 16bit code. Memory usage will be about doubled size compared to keymap(8bit code).
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actionmaps[] -> +-------------+
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| actionmap 0 |
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|-------------|
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| actionmap 1 |
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|-------------|
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| actionmap 2 |
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|-------------|
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| actionmap 3 |
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|-------------|
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| : : |
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Flash usage cosidaration
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------------------------
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For example of biggest ever map, PS/2 and ADB converter have 256 keys in a layer, so use 256 bytes each layer in keymap and 512 bytes in actionmap.
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In most cases map size of keyboard will be far smaller than that.
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### ATmega32U4
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Firmware -24KB(with full option)
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Keymapping 4KB-
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Bootloader 4KB(Atmel stock) or 512B(Teensy)
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### ATmega16U4(Not suppoeted yet)
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Firmware -10KB
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Keymapping 2KB-
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Bootloader 4KB(Atmel stock) or 512B(Teensy)
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Hex file format
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---------------
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[Intel Hex(wikipedia)](http://en.wikipedia.org/wiki/Intel_HEX)
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### 1.Start code
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':'
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### 2.Byte Count
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2 x hex(0-FF)
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### 3.Address
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4 x hex(0-FFFF)
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### 4.Record Type
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2 x hex(00-05)
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#### Record Type code
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00: Data record. which contains 16bit address and data.
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01: End of File record. It must appear in the last line.(usually :00000001FF)
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02: Extended Segment Address Record.
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03: Start Segment Address Record.
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04: Extended Linear Address Record. Upper two bytes of 32 bit address.
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05: Start Linear Address Record.
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### 5.Data
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byte_count * hex(00-FF)
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a sequence of data bytes
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### 6.Checksum
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2 x hex(00-FF)
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LSB of 2's complement of the sum of fields[ 'Byte Count', 'Address', 'Record Type' and 'Data' ]
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`checksum = ~(the sum of bytes)&0xff + 1 = (the sum)&0xff^0xff + 1`
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