Basic demo showing how to use the touch screen present on the DISCO_F746NG board

Dependencies:   BSP_DISCO_F746NG

Touch screen example

Revision:
0:9933f7db9a9b
Child:
3:9f66aabe7b3b
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp	Wed Oct 07 15:53:19 2015 +0000
@@ -0,0 +1,73 @@
+#include "mbed.h"
+#include "TS_DISCO_F746NG.h"
+#include "LCD_DISCO_F746NG.h"
+
+LCD_DISCO_F746NG lcd;
+TS_DISCO_F746NG ts;
+
+int main()
+{
+    TS_StateTypeDef TS_State;
+    uint16_t x, y;
+    uint8_t text[30];
+    uint8_t status;
+    uint8_t idx;
+    uint8_t cleared = 0;
+    uint8_t prev_nb_touches = 0;
+
+    lcd.DisplayStringAt(0, LINE(5), (uint8_t *)"TOUCHSCREEN DEMO", CENTER_MODE);
+    wait(1);
+
+    status = ts.Init(lcd.GetXSize(), lcd.GetYSize());
+    if (status != TS_OK) {
+        lcd.Clear(LCD_COLOR_RED);
+        lcd.SetBackColor(LCD_COLOR_RED);
+        lcd.SetTextColor(LCD_COLOR_WHITE);
+        lcd.DisplayStringAt(0, LINE(5), (uint8_t *)"TOUCHSCREEN INIT FAIL", CENTER_MODE);
+    } else {
+        lcd.Clear(LCD_COLOR_GREEN);
+        lcd.SetBackColor(LCD_COLOR_GREEN);
+        lcd.SetTextColor(LCD_COLOR_WHITE);
+        lcd.DisplayStringAt(0, LINE(5), (uint8_t *)"TOUCHSCREEN INIT OK", CENTER_MODE);
+    }
+
+    wait(1);
+    lcd.SetFont(&Font12);
+    lcd.SetBackColor(LCD_COLOR_BLUE);
+    lcd.SetTextColor(LCD_COLOR_WHITE);
+
+    while(1) {
+
+        ts.GetState(&TS_State);
+        if (TS_State.touchDetected) {
+            // Clear lines corresponding to old touches coordinates
+            if (TS_State.touchDetected < prev_nb_touches) {
+                for (idx = (TS_State.touchDetected + 1); idx <= 5; idx++) {
+                    lcd.ClearStringLine(idx);
+                }
+            }
+            prev_nb_touches = TS_State.touchDetected;
+
+            cleared = 0;
+
+            sprintf((char*)text, "Touches: %d", TS_State.touchDetected);
+            lcd.DisplayStringAt(0, LINE(0), (uint8_t *)&text, LEFT_MODE);
+
+            for (idx = 0; idx < TS_State.touchDetected; idx++) {
+                x = TS_State.touchX[idx];
+                y = TS_State.touchY[idx];
+                sprintf((char*)text, "Touch %d: x=%d y=%d    ", idx+1, x, y);
+                lcd.DisplayStringAt(0, LINE(idx+1), (uint8_t *)&text, LEFT_MODE);
+            }
+
+            lcd.DrawPixel(TS_State.touchX[0], TS_State.touchY[0], LCD_COLOR_ORANGE);
+        } else {
+            if (!cleared) {
+                lcd.Clear(LCD_COLOR_BLUE);
+                sprintf((char*)text, "Touches: 0");
+                lcd.DisplayStringAt(0, LINE(0), (uint8_t *)&text, LEFT_MODE);
+                cleared = 1;
+            }
+        }
+    }
+}