47 lines
1.1 KiB
C
47 lines
1.1 KiB
C
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/***************************************************
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This is a library for the MCP23008 i2c port expander
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****************************************************/
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#ifndef MCP23008_H
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#define MCP23008_H
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#include "Arduino.h"
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#define MCP23008_ADDRESS 0x20
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#define MCP23008_IODIR 0x00
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#define MCP23008_IPOL 0x01
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#define MCP23008_GPINTEN 0x02
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#define MCP23008_DEFVAL 0x03
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#define MCP23008_INTCON 0x04
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#define MCP23008_IOCON 0x05
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#define MCP23008_GPPU 0x06
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#define MCP23008_INTF 0x07
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#define MCP23008_INTCAP 0x08
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#define MCP23008_GPIO 0x09
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#define MCP23008_OLAT 0x0A
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#define NO_INTERRUPT 0x00
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#endif
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class MCP23008 {
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public:
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void begin(uint8_t addr);
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void pinMode(uint8_t mode);
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void pinMode(uint8_t pin, uint8_t mode);
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void setPullup(uint8_t pullup);
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uint8_t read();
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uint8_t read(uint8_t pin);
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void write(uint8_t values);
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void write(uint8_t pin, uint8_t value);
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void enableInterrupt(uint8_t pin, uint8_t mode);
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void disableInterrupt(uint8_t pin);
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private:
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uint8_t _i2cAddress;
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uint8_t _read(uint8_t addr);
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void _write(uint8_t addr, uint8_t data);
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};
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