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28 lines
808 B
Markdown
28 lines
808 B
Markdown
# touch_sense
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Core that handles touch senor events and provides them SW via an API.
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## Introduction
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This core implements a touch sensor handler. The core detects and
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holds events for SW to read. The touch sensor input is expected to be
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a change in level from low (0) to high (1). When an event is seen, the
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core will set a status bit that SW can read. SW must then clear the
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event by writing to the status register.
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The user is expected to lift the finger between multiple touch events.
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## API
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The API has a single address, and a single bit in that address:
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```
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ADDR_STATUS: 0x09
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STATUS_EVENT_BIT: 0
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```
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SW should clear any stray attempts before signalling to the user that
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a touch event is expected. Clearing an event is done by writing the
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the status address, the value written does not matter.
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