File content as of revision 27:998da0f731ad:

// Title : mbed-os-3-threads
// Author: Jacques-Olivier Klein - IUT de CACHAN
// Date: 2018-02-10

#include "mbed.h"
#include "IHM.h"

IHM ihm; 

DigitalOut L0 (PB_3) ;  // led L0
DigitalOut L1 (PA_7) ;  // led L1
DigitalOut L2 (PA_6) ;  // led L2

void led1_thread();
void led2_thread();

Thread thread1;
Thread thread2;

// main is the 1st thread
int main(void) 
{   ihm.LCD_clear();
    ihm.LCD_printf("3-threads-%s %s",__DATE__,__TIME__);
    printf("mbed-os-3-threads-%s %s\n\r",__DATE__,__TIME__);
    printf("DEFAULT_STACK_SIZE:%d\n\r", DEFAULT_STACK_SIZE); 

    thread1.start(led1_thread);   
    thread2.start(led2_thread);
 
    while(1){
        L0=!L0;
        printf("*     [pid-%d]Main \n\r",Thread::gettid());
        Thread::wait(200);  
    }
}

void led1_thread(){
    while (1) {
        L1 = ! L1;
        printf("  *   [pid-%d]led1_thread \n\r",Thread::gettid());
        Thread::wait(500);  
  }
}

void led2_thread(){
    while (1) {
        L2 = ! L2;
        printf("     *[pid-%d]led2_thread \n\r",Thread::gettid());
        Thread::wait(2500);  
   }
}