TFT_4DGL_Touch.cpp

00001 //
00002 // TFT_4DGL is a class to drive 4D Systems TFT touch screens
00003 //
00004 // Copyright (C) <2010> Stephane ROCHON <stephane.rochon at free.fr>
00005 //
00006 // TFT_4DGL is free software: you can redistribute it and/or modify
00007 // it under the terms of the GNU General Public License as published by
00008 // the Free Software Foundation, either version 3 of the License, or
00009 // (at your option) any later version.
00010 //
00011 // TFT_4DGL is distributed in the hope that it will be useful,
00012 // but WITHOUT ANY WARRANTY; without even the implied warranty of
00013 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
00014 // GNU General Public License for more details.
00015 //
00016 // You should have received a copy of the GNU General Public License
00017 // along with TFT_4DGL.  If not, see <http://www.gnu.org/licenses/>.
00018 
00019 #include "mbed.h"
00020 #include "TFT_4DGL.h"
00021 
00022 //******************************************************************************************************
00023 void TFT_4DGL :: touch_mode(char mode) { // Send touch mode (WAIT, PRESS, RELEASE or MOVE)
00024 
00025     char command[2]= "";
00026 
00027     command[0] = GETTOUCH;
00028     command[1] = mode;
00029 
00030     writeCOMMAND(command, 2);
00031 }
00032 
00033 //******************************************************************************************************
00034 void TFT_4DGL :: get_touch(int *x, int *y) { // Get the touch coordinates
00035 
00036     char command[2] = "";
00037     
00038     command[0] = GETTOUCH;
00039     command[1] = GETPOSITION;
00040     
00041     getTOUCH(command, 2, x, y);
00042 }
00043 
00044 //******************************************************************************************************
00045 int TFT_4DGL :: touch_status(void) { // Get the touch screen status
00046 
00047     char command[2] = "";
00048     
00049     command[0] = GETTOUCH;
00050     command[1] = STATUS;
00051     
00052     return getSTATUS(command, 2);
00053 }
00054 
00055 
00056 //******************************************************************************************************
00057 void TFT_4DGL :: wait_touch(int delay) { // wait until touch within a delay in milliseconds
00058 
00059     char command[3]= "";
00060 
00061     command[0] = WAITTOUCH;
00062 
00063     command[1] = (delay >> 8) & 0xFF;
00064     command[2] = delay & 0xFF;
00065 
00066     writeCOMMAND(command, 3);
00067 }
00068 
00069 //******************************************************************************************************
00070 void TFT_4DGL :: set_touch(int x1, int y1 , int x2, int y2) { // define touch area
00071 
00072     char command[9]= "";
00073 
00074     command[0] = SETTOUCH;
00075 
00076     command[1] = (x1 >> 8) & 0xFF;
00077     command[2] = x1 & 0xFF;
00078 
00079     command[3] = (y1 >> 8) & 0xFF;
00080     command[4] = y1 & 0xFF;
00081 
00082     command[5] = (x2 >> 8) & 0xFF;
00083     command[6] = x2 & 0xFF;
00084 
00085     command[7] = (y2 >> 8) & 0xFF;
00086     command[8] = y2 & 0xFF;
00087 
00088     writeCOMMAND(command, 9);
00089 }