27 lines
483 B
C
27 lines
483 B
C
#pragma once
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/*
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Keys, in order:
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123A 456B 789C *0#D
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*/
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typedef uint8_t Key;
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#define KEY_NONE 255
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extern const char *allKeys;
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bool setupKeyboard();
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/**
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* Returns pressed key once upon its release
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* or KEY_NONE if no key is pressed
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*
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* NOTE: Only one key can be pressed at a time;
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* if multiple keys are pressed, the behavior is undefined
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*/
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Key handleKeyboard();
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/**
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* Returns pressed digit or KEY_NONE if the key is not a digit
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*/
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uint8_t getPressedDigit(Key key);
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