uVGAIII_Touch.cpp

00001 //
00002 // uVGAIII is a class to drive 4D Systems TFT touch screens
00003 //
00004 // Copyright (C) <2010> Stephane ROCHON <stephane.rochon at free.fr>
00005 //
00006 // uVGAIII 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 // uVGAIII 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 uVGAIII.  If not, see <http://www.gnu.org/licenses/>.
00018 
00019 #include "mbed.h"
00020 #include "uVGAIII.h"
00021 
00022 //******************************************************************************************************
00023 int uVGAIII :: touch_status(void) {      // Get the touch screen status
00024     char command[4] = "";
00025     
00026     command[0] = (TOUCHGET >> 8) & 0xFF;
00027     command[1] = TOUCHGET & 0xFF;
00028     
00029     command[2] = (STATUS >> 8) & 0xFF;
00030     command[3] = STATUS & 0xFF;
00031     
00032     return getSTATUS(command, 4);       
00033 }
00034 
00035 //******************************************************************************************************
00036 void uVGAIII :: touch_get_x(int *x) {    // Get X coordinates
00037     char command[4] = "";
00038     
00039     command[0] = (TOUCHGET >> 8) & 0xFF;
00040     command[1] = TOUCHGET & 0xFF;
00041     
00042     command[2] = 0;
00043     command[3] = GETXPOSITION;
00044     
00045     getTOUCH(command, 4, x);
00046     
00047 #if DEBUGMODE
00048     pc.printf("Get X coordinates completed.\n");
00049 #endif
00050 }
00051 
00052 //******************************************************************************************************
00053 void uVGAIII :: touch_get_y(int *y) {    // Get Y coordinates
00054     char command[4] = "";
00055     
00056     command[0] = (TOUCHGET >> 8) & 0xFF;
00057     command[1] = TOUCHGET & 0xFF;
00058     
00059     command[2] = 0;
00060     command[3] = GETYPOSITION;
00061     
00062     getTOUCH(command, 4, y);
00063     
00064 #if DEBUGMODE
00065     pc.printf("Get Y coordinates completed.\n");
00066 #endif
00067 }
00068 
00069 //******************************************************************************************************
00070 void uVGAIII :: touch_set(char mode) {    // Sets various Touch Screen related parameters
00071 
00072     char command[4]= "";
00073 
00074     command[0] = (TOUCHSET >>8) & 0xFF;
00075     command[1] = TOUCHSET & 0xFF;
00076 
00077     command[2] = 0;
00078     command[3] = mode;
00079 
00080     writeCOMMAND(command, 4, 1);
00081     
00082 #if DEBUGMODE
00083     pc.printf("Touch set completed.\n");
00084 #endif
00085 }
00086 
00087 //******************************************************************************************************
00088 void uVGAIII :: detect_touch_region(int x1, int y1, int x2, int y2) {   // Specificies a new touch detect region on the screen
00089     char command[10] = "";  
00090     
00091     command[0] = (TOUCHDETECT >> 8) & 0xFF;
00092     command[1] = TOUCHDETECT & 0xFF;
00093     
00094     command[2] = (x1 >> 8) & 0xFF;
00095     command[3] = x1 & 0xFF;
00096 
00097     command[4] = (y1 >> 8) & 0xFF;
00098     command[5] = y1 & 0xFF;
00099 
00100     command[6] = (x2 >> 8) & 0xFF;
00101     command[7] = x2 & 0xFF;
00102 
00103     command[8] = (y2 >> 8) & 0xFF;
00104     command[9] = y2 & 0xFF;
00105 
00106     writeCOMMAND(command, 10, 1);
00107     
00108 #if DEBUGMODE
00109     pc.printf("Detect touch region completed.\n");
00110 #endif 
00111 }