easyC.hpp

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#ifndef __EASYC__
#define __EASYC__
 
#include "Arduino.h"
#include "Wire.h"
 
#define ANALOG_READ_REG 0
#define DIGITAL_READ_REG 1
 
class EasyC
{
public:
    EasyC()
    {
        native = 0;
    }
 
    bool begin()
    {   
        if (native)
        {
            initializeNative();
            return true;
        }
        else
            return begin(defaultAddress);
    }
 
    bool begin(uint8_t _address)
    {
        address = _address;
 
        Wire.begin();
 
        // Make sure we can communicate to GNSS
        char buf [1];
        this->sendAddress(30);
        this->readData(buf, 1);
        beginDone = 1;
        if(buf[0] == '1') return true;
        else return false;
    }
 
    int native = 0;
    bool beginDone = 0;
 
    virtual void initializeNative() = 0;
 
    int err;
 
    char address;
    const char defaultAddress = 0x30;
 
    int sendAddress(char regAddr)
    {
        Wire.beginTransmission(address);
        Wire.write(regAddr);
 
        return err = Wire.endTransmission();
    }
 
    int readData(char a[], int n)
    {
        Wire.requestFrom(address, n);
        Wire.readBytes(a, n);
 
        return 0;
    }
 
    int readRegister(char regAddr, char a[], size_t n)
    {
        if (sendAddress(regAddr))
            return err;
 
        if (readData(a, n))
            return err;
 
        return 0;
    }
 
    int sendData(const uint8_t *a, int n)
    {
        Wire.beginTransmission(address);
        Wire.write(a, n);
 
        return err = Wire.endTransmission();
    }
};
 
#endif