File content as of revision 2:015a5a76bb82:

#include "mbed.h"
#include "stdio.h"        
DigitalOut myled(LED1);
Serial pc(USBTX, USBRX);
Serial micro(PTE0, PTE1); // tx, rx
char buff[]={'\0'};
AnalogIn ax(PTC1);

float luxm(void)
{
AnalogIn ain(PTC2);

float vr=0,lr=0;
   
float vol[12]={0.36,0.61,0.8,0.9,1.23,1.45,1.81,2.06,2.62,2.81,3.02,3.25};
float lux[12]={27000,20000,16000,11000,4000,1500,833,578,201,104,40,23};

int i;
float m=0;

vr=ain*3.3;
for(i=0; vr> vol[i];i++);
m = ((lux[i]-lux[i+1])/(vol[i]-vol[i+1]));
lr=lux[i+1]+(m*(vr-(vol[i+1])));

return lr;
}




uint8_t val;
 
int main() 
{

     while(1) 
     {
      if(micro.readable()) 
      {
        val=(micro.getc());
        

        if(val == 0x00)
        {      
            
            
            pc.printf("%.2f ",luxm());
            
            
        }

        if(val == 0x01)
        {      
           
            pc.printf("%.2f ",ax*3.3);
        }
  
        val=0x00;
        
        wait(2);
         myled=1;
       }
    }       
 }