： BACK Be A Compilable Keyboard ;

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Forth language and environment for Mickey Board, a custom BLE keyboard PCBA based on nRF51822.

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Environment setup

For the simulation version (proj_sim in github repo), Keil free version (4kB limited) and gcc toolchain are need.

For the hardware version (proj_mb in github repo), GNU assembler and make tool are needed, (Ubuntu 16.04 is used but not mandatory, sudo apt-get install build-essential).

To calculate the hash value of a word name in assembly code, there are two elisp functions that can be used in Emacs.
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For Mickey Board (some links are in Chinese only)

1) Buy a Mickey Board （https://item.taobao.com/item.htm?spm=a230r.1.14.1.1ff67ad2Sr20a7&id=546117969332&ns=1&abbucket=20#detail）, switches, case and so on, assemble them into a Keyboard. The assembly method can refer to GH60.

2) Generate keyboard layout file using TKG (https://tkg.btsmartshield.com/)

3) Generate BACK hex, run make under the proj_mb，back.hex can be found under proj_mb/_build

4) Generate firmware zip by uploading the layout binary code and back.hex, upload the firmware with nRF Connect App on iOS or Android.
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For simulation (may be broken in recent version as we don't test for simulation)

Open the Keil project in proj_sim, Ctrl+F5 to start debug session.

Input/output would be In the UART window.

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