- TS_ERROR_NONE = 0,
- TS_ERROR_TIMEOUT = -1, // Timeout occured before a valid reading
- TS_ERROR_XYMISMATCH = -2 // Unable to get a stable X/Y value
+ TS_ERROR_NONE = 0,
+ TS_ERROR_TIMEOUT = -1, // Timeout occured before a valid reading
+ TS_ERROR_XYMISMATCH = -2, // Unable to get a stable X/Y value
+ TS_ERROR_NOTCALIBRATED = -3 // Can't calculate X/Y until tsCalibrate() is run!