Rabbit OP7100 User Manual download pdf (Page 114)

108 eDisplay (OP7200)

The TS_R4096.LIB library in the TouchScreens directory provides low-level touch-

screen function calls.

Calibrates the touchscreen as a linear function using the two sets of x,y coordinates provided. Gain and

offset constants are calculated and placed into the global table

_adcCalibTS.

PARAMETERS

x1 is the x coordinate of the upper left-hand corner of the touchscreen

y1 is the y coordinate of the upper left-hand corner of the touchscreen

x2 is the x coordinate of the lower right-hand corner of the touchscreen

y2 is the y coordinate of the lower right-hand corner of the touchscreen

RETURN VALUE

0 if sucessful

-1 if not able to make calibration constants

SEE ALSO

TsCalibEERd, TsCalibEEWr, TsXYvector, brdInit

Reads the calibration constants, gain, and offset from the simulated EEPROM in flash. The constants are

stored in the top 1K of the reserved user block memory area. Use the sample program

USERBLOCKINFOR.C in SAMPLES\OP7200 to get the addresses reserved for the calibration data

constants and the addresses available for use by your application program.

RETURN VALUE

0 if sucessful

-1 if invalid address or range

SEE ALSO

TsCalib, TsCalibEEWr, TsXYvector, brdInit

Writes the calibration constants, gain, and offset to the simulated EEPROM in flash. The constants are

stored in the top 1K of the reserved user block memory area. Use the sample program

USERBLOCKINFOR.C in SAMPLES\OP7200 to get the addresses reserved for the calibration data

constants and the addresses available for use by your application program.

RETURN VALUE

0 if sucessful

-1 if invalid address or range

SEE ALSO

TsCalib, TsCalibEERd, TsXYvector, brdInit

int TsCalib(int x1, int y1, int x2, int y2);

int TsCalibEERd(void);

int TsCalibEEWr(void);

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