File content as of revision 5:112df51d4815:

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


// false == on; true == off for the leds
DigitalOut myled(LED_GREEN);
DigitalOut redled(LED_RED);
Serial pc(USBTX, USBRX);

AnalogIn my_light_sensor(PTE22);
Ticker ticker;
int tick_count = 0;

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

int main()
{
    ticker.attach_us(&systick, 100000);
    pc.baud(115200);
    int i = 0;
    bool pulse_value = false;
    pc.printf("Hello World!\n");
    Convert lcd;

    while (true) {
        
        float let_there_be_light;
        
        // set the pulse high for 100ms
        pulse_value = true;
        myled = pulse_value; // toggle a led
        let_there_be_light = my_light_sensor.read();
        pc.printf("%f \r\n", let_there_be_light);
        lcd.display(1);
        wait_ms(100.0f);
        
        // set it low again for the remainder of the second
        pulse_value = false;
        myled = pulse_value; // toggle a led
        let_there_be_light = my_light_sensor.read();
        pc.printf("%f \r\n", let_there_be_light);
        lcd.display(0);
        wait_ms(900.0f);
        
        
        /*
        pc.printf("%d \n", i); // print the value of variable i
        i++; // increment the variable
        myled = pulsevalue; // toggle a led
        
        */
    }
}