LIB for resistiv touchscreen connected to 4 mbed pins Use SPI_TFT lib
Fork of Touch_tft by
touch_tft.h
- Committer:
- dreschpe
- Date:
- 2011-07-14
- Revision:
- 0:d78b00f167cb
- Child:
- 1:1745fdf054b5
File content as of revision 0:d78b00f167cb:
#ifndef MBED_TOUCH_H #define MBED_TOUCH_H #include "mbed.h" #include "SPI_TFT.h" struct point{ unsigned short x; unsigned short y; }; class touch_tft : public SPI_TFT{ public: /** create a TFT with touch object connected to the pins * * @param pin xp resistiv touch x+ * @param pin xm resistiv touch x- * @param pin yp resistiv touch y+ * @param pin ym resistiv touch y- * @param mosi,miso,sclk SPI connection to TFT * @param cs pin connected to CS of display * @param reset pin connected to RESET of display * based on my SPI_TFT lib */ touch_tft(PinName xp, PinName xm, PinName yp, PinName ym,PinName mosi, PinName miso, PinName sclk, PinName cs, PinName reset,const char* name ="TFT"); /** calibrate the touch display * */ void calibrate(void); /** read x and y analog samples * * @returns point(x,y) */ point get_touch(void); /** calculate coord on screen * * @param a_point point(analog x, analog y) * @returns point(pixel x, pixel y) * */ point to_pixel(point a_point); /** test if screen is touched * * @param point analog x,y * @returns true is touched * */ bool is_touched(point a); protected: DigitalInOut _xp; DigitalInOut _xm; DigitalInOut _yp; DigitalInOut _ym; AnalogIn _ax; AnalogIn _ay; PinName xa; PinName ya; unsigned short x_a,y_a; unsigned short x_off,y_off; unsigned short pp_tx,pp_ty; }; #endif