main.cpp

00001 /*Graduated Night light with Seed Grove Ambient Light sensor
00002 Casey Lively
00003 March 2016*/
00004 
00005 //Read in ambient light sensor with mbed LPC1768
00006 #include "mbed.h"
00007 
00008 AnalogIn sensor(p20);//
00009 BusOut lights(LED1, LED2, LED3, LED4);
00010 
00011 int main() {
00012     float val;
00013     float threshold = .03; //User specified for night-light mode. Set to .03 for light measurement mode
00014     while(1) {
00015         val = sensor.read();
00016         
00017         //Uncomment the line below for debugging.
00018        // printf("Sensor reading: %2.2f - %2.2f\r\n", val, (float)(1023-val)*10/val); //print through debug serial connection
00019         
00020         if(val <= threshold)
00021             lights = 15; //set all bus lines to 1
00022         else
00023             lights = 0; //set all bus lines to 0
00024         
00025        
00026         wait(0.1);
00027     }//end while(1)
00028 }//end Main