Diff: TFT_4DGL_Touch.cpp

Revision:

0:3c419cd96ffd

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/TFT_4DGL_Touch.cpp	Wed Mar 30 19:53:40 2011 +0000
@@ -0,0 +1,109 @@
+//
+// TFT_4DGL is a class to drive 4D Systems TFT touch screens
+//
+// Copyright (C) <2010> Stephane ROCHON <stephane.rochon at free.fr>
+//
+// TFT_4DGL is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// TFT_4DGL is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with TFT_4DGL.  If not, see <http://www.gnu.org/licenses/>.
+
+#include "mbed.h"
+#include "TFT_4DGL.h"
+
+//******************************************************************************************************
+void TFT_4DGL :: touch_mode(char mode) { // Send touch mode (WAIT, PRESS, RELEASE or MOVE)
+
+    char command[2]= "";
+
+    command[0] = GETTOUCH;
+    command[1] = mode;
+
+    writeCOMMAND(command, 2);
+}
+
+//******************************************************************************************************
+void TFT_4DGL :: get_touch(int *x, int *y) { // Get the touch coordinates
+
+    char command[2] = "";
+    
+    command[0] = GETTOUCH;
+    command[1] = GETPOSITION;
+    
+    getTOUCH(command, 2, x, y);
+}
+
+//******************************************************************************************************
+int TFT_4DGL :: touch_status(void) { // Get the touch screen status
+
+    char command[2] = "";
+    
+    command[0] = GETTOUCH;
+    command[1] = STATUS;
+    
+    return getSTATUS(command, 2);
+}
+
+
+//******************************************************************************************************
+void TFT_4DGL :: wait_touch(int delay) { // wait until touch within a delay in milliseconds
+
+    char command[3]= "";
+
+    command[0] = WAITTOUCH;
+
+    command[1] = (delay >> 8) & 0xFF;
+    command[2] = delay & 0xFF;
+
+    writeCOMMAND(command, 3);
+}
+
+//******************************************************************************************************
+void TFT_4DGL :: set_touch(int x1, int y1 , int x2, int y2) { // define touch area
+
+    char command[9]= "";
+
+    command[0] = SETTOUCH;
+
+    command[1] = (x1 >> 8) & 0xFF;
+    command[2] = x1 & 0xFF;
+
+    command[3] = (y1 >> 8) & 0xFF;
+    command[4] = y1 & 0xFF;
+
+    command[5] = (x2 >> 8) & 0xFF;
+    command[6] = x2 & 0xFF;
+
+    command[7] = (y2 >> 8) & 0xFF;
+    command[8] = y2 & 0xFF;
+
+    writeCOMMAND(command, 9);
+}
+
+//******************************************************************************************************
+// There is no way to have the uLCD-32PT trigger an interrupt when touched. 
+// This function polls the screen and waits for a touch to regiester
+//******************************************************************************************************
+void TFT_4DGL :: Pause_Until_Touch(int *x, int *y) { // Actually waits for a TouchScreen release!
+    
+    char TouchStatus = 0;                       //Initalise the TouchStatus as 0 = no touch activity
+    char command[2] = "";
+
+    do{
+        TouchStatus = touch_status();           //Get the touchscreen status
+        wait(0.1);
+    }while (TouchStatus != 2);
+    
+    command[0] = GETTOUCH;
+    command[1] = GETPOSITION;
+    
+    getTOUCH(command, 2, x, y);
+}
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