39 lines
828 B
C++
39 lines
828 B
C++
#ifndef PCF8574_H
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#define PCF8574_H
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#include <Arduino.h>
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#include <Wire.h>
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/***
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* A very simple class to drive a PCF8574 chip
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*
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* Anatole SCHRAMM-HENRY -- Th3maz1ng
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***/
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class PCF8574
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{
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public:
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enum Pin{P0 = 1, P1 = 2, P2 = 4, P3 = 8, P4 = 16, P5 = 32, P6 = 64, P7 = 128};
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PCF8574(uint8_t address, TwoWire &twc = Wire);
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boolean begin();
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void pinMode(Pin pin, boolean mode = INPUT);
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void digitalWrite(Pin pin, boolean mode);
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boolean digitalRead(Pin pin);
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void digitalReadAll(boolean array[8]);
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boolean getPinMode(Pin pin);
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void getPinModeAll(boolean array[8]);
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void togglePin(Pin pin);
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// Reset the IRQ by doing a dummy read
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void resetIRQ();
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private:
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TwoWire &_twc;
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uint8_t _address;
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uint8_t _pinConfig;
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uint8_t _pddr;
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protected:
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};
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#endif //PCF8574_H
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