main.cpp

00001 #include "mbed.h"
00002 #include "TextLCD.h"
00003 
00004 Serial pc(SERIAL_TX, SERIAL_RX); 
00005 AnalogIn button(A0);    // Init button (SELECT, LEFT, UP, DOWN, RIGHT)
00006 // LCD (RS, E, D4, D5, D6, D7);
00007 TextLCD lcd(D8, D9, D4, D5, D6, D7);
00008 //PwmOut backlight(D10);  // Backlight LCD
00009 DigitalOut led(LED1);
00010 
00011 
00012 int main() {
00013     
00014     // Set backlight period and duty cycle 
00015     //backlight.period(0.002);
00016     //backlight = 1;
00017 
00018     
00019     lcd.cls();                      // Clear LCD
00020     lcd.locate(1,0);                // Set locate (1 row, 2 column)
00021     lcd.printf("LCD Key Shield");
00022     wait(1);
00023     
00024     int meas;
00025     
00026     while(1) {
00027         led = (led == 1) ? 0 : 1;
00028 
00029         meas = button * 1000; // Read the analog input value (value from 0.0 to 1.0) and convert to int value (from 0 to 1000)
00030         
00031         lcd.cls();
00032         lcd.locate(0,0);
00033         lcd.printf("Press button");
00034         lcd.locate(0,1);
00035         
00036         if (meas < 50) { 
00037             lcd.printf("BUTTON: Right ");
00038             //backlight = 0.5;        // Set 50% backlight 
00039         }
00040         else if (meas < 250) { 
00041             lcd.printf("BUTTON: Up");
00042             //backlight = 1;          // Power ON backlight
00043         } 
00044         else if (meas < 530){ 
00045             lcd.printf("BUTTON: Down");
00046             //backlight = 0;          // Power OFF backlight
00047         } 
00048         else if (meas < 780&&meas>735){ 
00049             lcd.printf("BUTTON: Left"); 
00050         } 
00051         else if (meas > 950){ 
00052             lcd.printf("BUTTON: Select");
00053         }
00054         pc.printf("BUTTON: %4d\n", meas);
00055         
00056         wait(0.1);
00057     }
00058 }