File content as of revision 3:c4427ce4d171:

#include "mbed.h"

Serial pc(SERIAL_TX, SERIAL_RX);
DigitalOut clk(PE_9);
DigitalOut dat(PE_11);
DigitalOut   led(LED1);

// Avoid name conflict
#define LED_GLB_CMDMODE 0x00  // Work on 8-bit mode
#define LED_GLB_ON      0xff  // 8-bit 1 data
#define LED_GLB_OFF     0x00  // 8-bit 0 data

// Send 16 bits of data
void sendData(unsigned int data)
{
  for (int i = 0; i < 16; i++)
  {
      wait_ms(1);
    unsigned int state = (data & 0x8000) ? 1 : 0;
    dat = state;

    wait_ms(1);
    clk = !clk;

    data <<= 1;
  }
}

// Send the latch command
void latchData()
{
dat = 0;
  wait_ms(10);

  for (int i = 0; i < 4; i++)
  {
      wait_ms(1);
    dat=1;
    wait_ms(1);
    dat=0;
  }
}

// each element in the state will hold the brightness level
// 00000000 darkest
// 00000011 brighter
// ........
// 11111111 brightest
void setData(int __state[])
{

  sendData(LED_GLB_CMDMODE);
  for (int i = 0; i < 10; i++)
  {
	  // Go forward on __state
      sendData(__state[i]);
  }

  // Two extra empty bits for padding the command to the correct length
  sendData(0x00);
  sendData(0x00);

  latchData();
}



int main() {
    pc.printf("\n\nstarting algorithm\n\n");
    int led_bar[] = {0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff };
    int not_led_bar[] = {0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 };
    setData(led_bar);
    /* display.setBrightness(7); */
    /* display.write(100); */
    /* display.write(5); */
    /* display.write(hour * 100 + minute);
 */
    /* ticker.attach(tick, 0.5);
 */
    while(1) {
        setData(led_bar);
        wait(0.5);
        setData(not_led_bar);
        pc.printf("iteration\n");
        led = !led;
        wait(2);
    }
}