main.cpp

00001 #include "mbed.h"
00002 #include "TextLCD.h"
00003 #include "stdio.h"
00004 AnalogIn ain(PTC2);
00005 TextLCD lcd(PTA1,PTA2,PTD4,PTA12,PTA4,PTA5,TextLCD::LCD16x2); 
00006 DigitalOut ground(PTC9);
00007 char buff[15]={'\0'};
00008 
00009 int main()
00010 {
00011     ground=0;
00012     lcd.cls();
00013     while(1)
00014     {
00015        float temp[70]={0},volt[100]={0};//arrey for temp & vltg
00016        int i=0, j=0;
00017 
00018         for(i=0;i<100;i++)
00019         {
00020             volt[i]=ain*3.3; 
00021         }
00022          for(i=0;i<70;i++)
00023          {
00024             float avg = 0.0; //initialise avg
00025             
00026             for(j=i;j<(i+20);j++) //taking first  20 reading
00027             {
00028                 avg = avg +volt[j];
00029             }       
00030             avg = avg/20.0; //taking avg of 20 readings 
00031         temp[i] = avg*100.0; // calibrating temp with 10mV / degree C
00032          }  
00033          //initialization of lcd
00034      lcd.cls();
00035      for(i=0;i<70;i++)
00036      {
00037          lcd.locate(0,0);
00038          lcd.printf("Vtg:");
00039          lcd.locate(7,0);
00040          sprintf(buff,"%.2f",volt[i]);
00041          lcd.printf(buff);
00042          lcd.locate(0,1);
00043          lcd.printf("Temp:");
00044          sprintf(buff,"%.2f",temp[i]);
00045          lcd.printf(buff);
00046          wait(0.5);
00047     }
00048     }
00049 }