Diff: TS.cpp

Revision:

0:f2fda7f69e5a

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/TS.cpp	Mon Nov 02 21:14:08 2020 +0000
@@ -0,0 +1,93 @@
+#include "TS.h"
+
+bool TS_point::operator==(TS_point p) {
+  return ((p.x == x) && (p.y == y));
+}
+
+bool TS_point::operator!=(TS_point p) {
+  return ((p.x != x) || (p.y != y));
+}
+
+TouchScreen::TouchScreen(int pinYP, int pinYM, int pinXP, int pinXM, TS_config configuration):
+                        pYP(pinYP), pYM(pinYM), pXP(pinXP), pXM(pinXM), conf(configuration){
+    pxX= 1.0/(conf.TS_adc_Xmax - conf.TS_adc_Xmin);
+    pxY = 1.0/(conf.TS_adc_Ymax - conf.TS_adc_Ymin); 
+}
+
+void TouchScreen::setOrientation(TS_Orientation orientation){
+    ts_orient = orientation;
+}
+
+
+bool TouchScreen::getPoint(TS_point *point){
+    bool valid = true;
+
+    int xV = getCoords(setX); 
+    int yV = getCoords(setY); 
+
+    point->xV = xV;
+    point->yV = yV;
+
+    if(xV < conf.TS_adc_Xmin || xV > conf.TS_adc_Xmax) valid = false;
+    int x = ((1 - nrm_adcX(xV)) * conf.TFTWIDTH); 
+
+    if(yV < conf.TS_adc_Ymin || yV > conf.TS_adc_Ymax) valid = false;
+    int y = ((1 - nrm_adcY(yV)) * conf.TFTHEIGHT);
+
+    switch(ts_orient) {
+        case TS_PORTRAITE:
+            point->x = x;
+            point->y = y;
+            break;
+        case TS_LANDSCAPE:
+            point->x = y;
+            point->y = conf.TFTWIDTH - x;
+            break;
+        case TS_PORTRAITE_REV:
+            point->x = conf.TFTWIDTH - x;
+            point->y = conf.TFTHEIGHT - y;
+            break;
+        case TS_LANDSCAPE_REV:
+            point->x = conf.TFTHEIGHT - y;
+            point->y = x;
+            break;
+        default:      
+            point->x = x;
+            point->y = y;
+    }
+    return valid;
+}
+
+int TouchScreen::getCoords(Axis axis){
+    int value = 0;
+    switch(axis){
+        case setX:
+            setDigitalPin(pXM,pOutput,0);   // XM = Output Low
+            setDigitalPin(pXP,pOutput,1);   // XP = Output high
+            setDigitalPin(pYM,pInput,0);    // YM = Input
+            value = getADCvalue(pYP);       // YP = ADC
+            setDigitalPin(pXP,pOutput,0);   // XP = Output Low
+            setDigitalPin(pYM,pOutput,0);   // YM = Output Low
+            setDigitalPin(pYP,pOutput,0);   // YP = Output Low 
+            break;
+        case setY:
+            setDigitalPin(pYM,pOutput,0);   // YM = Output Low
+            setDigitalPin(pYP,pOutput,1);   // YP = Output high
+            setDigitalPin(pXP,pInput,0);    // XP = Input
+            value = getADCvalue(pXM);       // XM = ADC
+            setDigitalPin(pYP,pOutput,0);   // YP = Output Low
+            setDigitalPin(pXP,pOutput,0);   // XP = Output Low
+            setDigitalPin(pXM,pOutput,0);   // XM = Output Low 
+            break;
+    }
+    return value;
+}
+
+float TouchScreen::nrm_adcX(unsigned int x){
+    return (x - conf.TS_adc_Xmin) * pxX;
+}
+
+float TouchScreen::nrm_adcY(unsigned int y){
+    return (y - conf.TS_adc_Ymin) * pxY;
+}
+