File content as of revision 6:3fbe44c7c26a:

#include "mbed.h"
#include "convert.h"

Serial pc(USBTX, USBRX);

AnalogIn my_light_sensor(PTE22);
AnalogIn my_analog_pin(PTB0);
// false == on; true == off for the leds
DigitalOut myled(LED_GREEN);
DigitalOut redled(LED_RED);

Ticker ticker;
char my_time[31];
int tick_count = 0;

void systick() {
    if (tick_count % 10 == 0) {
        redled = true;
    }
    else {
        redled = false;
    }
    tick_count++;
}

int main()
{   
    //initialize hardware
    ticker.attach_us(&systick, 100000);
    pc.baud(115200);
    Convert lcd;
    
    //initialize variables
    int i = 0;
    bool pulse_value = false;
    float let_there_be_light = 0.0;
    float my_analog_value = 0.0;
    my_time[30] = '\0';
    
    //we start the program
    pc.printf("Hello World!\n");
    
    while (true) 
    {
        // Beginning of a second
            // set the pulse high for 100ms, .1 s        
                // toggle a led
                pulse_value = true;
                myled = pulse_value;
                
                // get data from the (2) light sensor (3) analog pin
                let_there_be_light = my_light_sensor.read();
                my_analog_value = my_analog_pin.read();
                    
                // print the analog values to uart
                pc.printf("%f,%f\r\n", let_there_be_light, my_analog_value);
                
                // display 1
                lcd.display(1);
                wait_ms(100.0f);
            
            // set the pulse low for 900 ms, .9 s
                // toggle a led
                pulse_value = false;
                myled = pulse_value; // toggle a led
                
                // get data from the (2) light sensor (3) analog pin
                let_there_be_light = my_light_sensor.read();
                my_analog_value = my_analog_pin.read();
                
                // print the analog values to uart
                pc.printf("%f,%f\r\n", let_there_be_light, my_analog_value);
                
                // display 0
                lcd.display(0);
                wait_ms(900.0f);
            
        // End of a second
        
        /*
        
        //on hold for a moment
        my_time[i] = pc.getc();
        if (i == 29)
        {
            i = 0;    
        }
        */
    }
}