39 lines
1018 B
Markdown
39 lines
1018 B
Markdown
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# Firmware Proto Transport
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## Goal
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Add CDC and GATT private communication without rewriting the existing keyboard,
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time, theme, and LED business logic.
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The firmware side should:
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- keep standard HID behavior for normal keys
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- receive host commands over CDC and GATT
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- report private state and function key events over CDC and GATT
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- reuse existing modules where possible
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## Completed Nodes
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### Node 1: internal function events
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Files:
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- `src/events/function_bitmap_event.h`
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- `src/events/function_bitmap_event.c`
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- `src/events/function_key_event.h`
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- `src/events/function_key_event.c`
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Design notes:
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- `function_bitmap_event` carries the 29-byte function bitmap from host
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- `function_key_event` carries usage + action when a configured function key
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is pressed or released
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- these events isolate transport modules from keyboard internals
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## Planned next nodes
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- keyboard split logic uses `function_bitmap_event`
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- CDC transport module
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- GATT transport module
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- nanopb integration and generated protocol code
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