Diff: touch_tft.h

Revision:

0:d0e2979d7ed6

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/touch_tft.h	Tue Apr 10 03:34:09 2012 +0000
@@ -0,0 +1,79 @@
+#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, PinName bk, const char* name ="TFT");
+    
+    /** calibrate the touch display
+     *
+     * User is asked to touch on two points on the screen
+     */   
+    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
+     *
+     */   
+   point shared_pointer(unsigned int xo, unsigned int xf, unsigned int speed, unsigned repetitions);  
+   
+     
+     
+    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