//
// rt_sqr.c
//


#define MODULE
#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/version.h>
#include <linux/cons.h>
#include <asm/io.h>
#include <linux/rt_sched.h>


// My address of the parallel port
#define LPT 0x378


RT_TASK mytask;
RT_TASK mytask2;


// Period of the square wave
int per = 40000;


void fun(int t) {
while (1) {
outb(t, LPT);
rt_task_wait();
}
}


int init_module(void)
{
RTIME now = rt_get_time();


per = per * 1.19343;


// this task sets the bit
rt_task_init(&mytask, fun, 2, 3000, 4);


/ this task resets the bit
rt_task_init(&mytask2, fun, 0, 3000, 5);


// the 2 tasks run periodically with an offset
rt_task_make_periodic(&mytask, now + 3000, per);
rt_task_make_periodic(&mytask2, now + 3000 + ( per/2 ), per);
return 0;
}


void cleanup_module(void)
{
rt_task_delete(&mytask);
rt_task_delete(&mytask2);
}