Adafruit ADS1015 ADC Library for Spark?

Firmware Libraries
2

Some useful starters can be found here

and in the connected GitHub repo

With the hints and tips in there I wouldn’t see any problem porting that library.

Just one thing in addition to that. For the .cpp file you could do this

/**************************************************************************/
/*!
    @brief  Abstract away platform differences in Arduino wire library
*/
/**************************************************************************/
static uint8_t i2cread(void) {
#if defined(SPARK) || (ARDUINO >= 100)
  return Wire.read();
#else
  return Wire.receive();
#endif
}

/**************************************************************************/
/*!
    @brief  Abstract away platform differences in Arduino wire library
*/
/**************************************************************************/
static void i2cwrite(uint8_t x) {
#if defined(SPARK) || (ARDUINO >= 100)
  Wire.write((uint8_t)x);
#else
  Wire.send(x);
#endif
}