File content as of revision 0:7c7f4b30d64f:

#include "mbed.h"
#include "stdio.h"

DigitalOut myled(LED1); // Led on board
DigitalOut clock_pin(D8); //send clock pulse
DigitalOut serial_out(D7); //serial tx
Timer t; //timer for controlling the clock and data skew
int msecs; //clock time needed for data transfer
int sksecs; //skew time
int skew_flag; //skew flag for while loop

int main() {
    
    //turn on red led to show programming has worked
    myled = 0;
    //initialize output pins
    clock_pin = 0;
    serial_out = 0;
    //skew flag
    skew_flag = 1;
    
    //set timers
    msecs = 10;
    sksecs = 8;
    
    //output a clock pulse and data.
    while(1)
    {
        //start timer for clock
        t.start();
        //wait until the timer has reached the set time.
        while(t.read_ms() < msecs)
        {
            //switch data just before clock goes high
            if(!clock_pin && skew_flag && t.read_ms() > sksecs)
            {
                //switch data signal
                serial_out = !serial_out;
                skew_flag = 0;
            }
        }
        //stop and reset the timer
        t.stop();
        t.reset();
        //switch clock signal
        clock_pin = !clock_pin;
        //reset skew flag
        skew_flag = 1;
    }
}