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https://github.com/RobTillaart/Arduino.git
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39 lines
773 B
C
39 lines
773 B
C
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#pragma once
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//
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// FILE: I2CKeyPad.h
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// AUTHOR: Rob Tillaart
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// VERSION: 0.1.2
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// PURPOSE: Arduino libray for 4x4 KeyPad connected to an I2C PCF8574
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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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#define I2C_KEYPAD_LIB_VERSION (F("0.1.2"))
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#define I2C_KEYPAD_NOKEY 16
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#define I2C_KEYPAD_FAIL 17
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class I2CKeyPad
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{
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public:
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I2CKeyPad();
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#if defined(ESP8266) || defined(ESP32)
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bool begin(uint8_t sda, uint8_t scl, uint8_t address);
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#endif
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bool begin(uint8_t address);
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uint8_t getKey();
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uint8_t getLastKey() { return _lastKey; };
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bool isPressed();
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bool isConnected();
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private:
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uint8_t _address;
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uint8_t _lastKey;
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uint8_t _read(uint8_t mask);
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};
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// -- END OF FILE --
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