2022-09-29 10:59:37 -04:00
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#pragma once
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//
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// FILE: I2CKeyPad8x8.h
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// AUTHOR: Rob Tillaart
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2022-11-13 03:44:30 -05:00
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// VERSION: 0.1.1
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2022-09-29 10:59:37 -04:00
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// PURPOSE: Arduino library for 8x8 or smaller KeyPad connected to an I2C PCF8575.
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// URL: https://github.com/RobTillaart/I2CKeyPad
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#include "Arduino.h"
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#include "Wire.h"
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2022-11-13 03:44:30 -05:00
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#define I2C_KEYPAD8x8_LIB_VERSION (F("0.1.1"))
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2022-09-29 10:59:37 -04:00
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2022-11-13 03:44:30 -05:00
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#define I2C_KEYPAD8x8_NOKEY 64
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#define I2C_KEYPAD8x8_FAIL 65
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2022-09-29 10:59:37 -04:00
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class I2CKeyPad8x8
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{
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public:
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I2CKeyPad8x8(const uint8_t deviceAddress, TwoWire *wire = &Wire);
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#if defined(ESP8266) || defined(ESP32)
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bool begin(uint8_t sda, uint8_t scl);
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#endif
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bool begin();
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// get raw key's 0..65
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uint8_t getKey();
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uint8_t getLastKey();
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bool isPressed();
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bool isConnected();
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// get 'translated' keys
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// user must load KeyMap, there is no check.
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uint8_t getChar();
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uint8_t getLastChar();
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void loadKeyMap(char * keyMap); // char[65]
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protected:
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uint8_t _address;
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uint8_t _lastKey;
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uint16_t _read(uint16_t mask);
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TwoWire* _wire;
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char * _keyMap = NULL;
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};
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// -- END OF FILE --
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