main.cpp

00001 // uLCD-144-G2 different fonts
00002 //
00003 #include "mbed.h"
00004 #include "uLCD_4DGL.h"
00005 #include "PinDetect.h"
00006 
00007 uLCD_4DGL uLCD(p9,p10,p11); // serial tx, serial rx, reset pin;
00008 PinDetect pb1(p15);
00009 PinDetect pb2(p16);
00010 PinDetect pb3(p17);
00011 
00012 int volatile sizeCount=1;       //font size count, set to 1 initially
00013 int volatile fontCount=0;       //font count
00014 int volatile isInterrupted=1;   //indicate an interrupt
00015  
00016 //pb1 to increase font size
00017 void pb1_hit_callback (void) {
00018     if (sizeCount < 4) {sizeCount++;}
00019     uLCD.cls();
00020     isInterrupted=1;
00021 }
00022 
00023 //pb2 to decrease font size
00024 void pb2_hit_callback (void) {
00025     if (sizeCount > 1) {sizeCount--;}
00026     uLCD.cls();
00027     isInterrupted=1;
00028 }
00029 
00030 //pb3 changes font. Loops through default, comic sans, tahoma, and courier new
00031 void pb3_hit_callback (void) {
00032     if (fontCount < 3) {fontCount++;}
00033     else {fontCount = 0;}
00034     uLCD.cls();
00035     isInterrupted=1;
00036 }
00037 
00038 int main()
00039 {
00040     pb1.mode(PullUp);    
00041     pb2.mode(PullUp);
00042     pb3.mode(PullUp);
00043     wait(.01);
00044     // Setup Interrupt callback functions for a pb hit
00045     pb1.attach_deasserted(&pb1_hit_callback);
00046     pb2.attach_deasserted(&pb2_hit_callback);
00047     pb3.attach_deasserted(&pb3_hit_callback);
00048     // Start sampling pb inputs using interrupts
00049     pb1.setSampleFrequency();
00050     pb2.setSampleFrequency();
00051     pb3.setSampleFrequency();
00052     uLCD.media_init(); // initialize uSD card
00053     uLCD.printf("\n  Hello\n  Font\n  World");
00054     while (1) {
00055         //change font settings if a button is pushed
00056         if(isInterrupted == 1) {
00057             uLCD.cls();
00058             isInterrupted = 0;
00059             //comic sans
00060             if(fontCount == 1) {
00061                 uLCD.set_sector_address(0,0);
00062                 uLCD.set_font(MEDIAFONT);
00063             }
00064             //tahoma
00065             else if(fontCount == 2) {
00066                 uLCD.set_sector_address(0,0xE);
00067                 uLCD.set_font(MEDIAFONT);
00068             }
00069             //courier new
00070             else if(fontCount == 3) {
00071                 uLCD.set_sector_address(0,0x1C);
00072                 uLCD.set_font(MEDIAFONT);
00073             }
00074             //default font
00075             else {
00076                 uLCD.set_sector_address(0,0);
00077                 uLCD.set_font(FONT_7X8);
00078             }
00079             //increase or decrease font
00080             uLCD.text_width(sizeCount); //1X size text
00081             uLCD.text_height(sizeCount);    
00082             uLCD.printf("\n  Hello\n  Font\n  World");
00083         }
00084 
00085     }
00086 }