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76 lines
1.8 KiB
76 lines
1.8 KiB
#if(ARDUINO >= 100)
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#include <Arduino.h>
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#else
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#include <WProgram.h>
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#endif
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#include <inttypes.h>
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#ifndef I2C_h
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#define I2C_h
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#define START 0x08
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#define REPEATED_START 0x10
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#define MT_SLA_ACK 0x18
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#define MT_SLA_NACK 0x20
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#define MT_DATA_ACK 0x28
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#define MT_DATA_NACK 0x30
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#define MR_SLA_ACK 0x40
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#define MR_SLA_NACK 0x48
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#define MR_DATA_ACK 0x50
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#define MR_DATA_NACK 0x58
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#define LOST_ARBTRTN 0x38
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#define TWI_STATUS (TWSR & 0xF8)
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#define SLA_W(address) (address << 1)
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#define SLA_R(address) ((address << 1) + 0x01)
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#define cbi(sfr, bit) (_SFR_BYTE(sfr) &= ~_BV(bit))
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#define sbi(sfr, bit) (_SFR_BYTE(sfr) |= _BV(bit))
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#define MAX_BUFFER_SIZE 32
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class I2C
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{
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public:
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I2C();
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void begin();
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void end();
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void timeOut(uint16_t);
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void setSpeed(uint8_t);
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void pullup(uint8_t);
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void scan();
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uint8_t available();
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uint8_t receive();
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uint8_t write(uint8_t, uint8_t);
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uint8_t write(int, int);
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uint8_t write(uint8_t, uint8_t, uint8_t);
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uint8_t write(int, int, int);
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uint8_t write(uint8_t, uint8_t, char*);
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uint8_t write(uint8_t, uint8_t, uint8_t*, uint8_t);
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uint8_t read(uint8_t, uint8_t);
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uint8_t read(int, int);
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uint8_t read(uint8_t, uint8_t, uint8_t);
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uint8_t read(int, int, int);
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uint8_t read(uint8_t, uint8_t, uint8_t*);
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uint8_t read(uint8_t, uint8_t, uint8_t, uint8_t*);
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uint8_t start();
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uint8_t sendAddress(uint8_t);
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uint8_t sendByte(uint8_t);
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uint8_t receiveByte(uint8_t);
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uint8_t receiveByte(uint8_t, uint8_t *target);
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uint8_t stop();
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private:
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void lockUp();
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uint8_t returnStatus;
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uint8_t nack;
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uint8_t data[MAX_BUFFER_SIZE];
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static uint8_t bytesAvailable;
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static uint8_t bufferIndex;
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static uint8_t totalBytes;
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static uint16_t timeOutDelay;
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};
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extern I2C I2c;
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#endif
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