main.cpp

00001 #include "mbed.h"
00002 #include "m3pi.h"
00003 
00004 m3pi m3pi;
00005 DigitalOut relay (p20);
00006 
00007 void charge (float volts);
00008 void charge (float volts)
00009 {
00010 
00011     volatile float current_volts = m3pi.battery();
00012 
00013     if (current_volts < volts) { // needs charging
00014         relay = 1; // switch relay on        
00015         while (current_volts < volts) {
00016             current_volts = m3pi.battery();
00017             m3pi.cls();
00018             m3pi.locate(0,0);
00019             m3pi.printf("%.2f",current_volts);
00020             wait(10.0);
00021         }
00022         relay = 0; // switch relay off
00023         return;
00024 
00025     } else { // no charege needed
00026         return;
00027     }
00028 
00029 }
00030 
00031 
00032 int main()
00033 {
00034 
00035     m3pi.locate(0,1);
00036     m3pi.printf("LO World");
00037     
00038     charge(4.8); // chrage to 4.8v
00039     
00040 }
00041 
00042