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/* Produce a rectangular wave on output 0 of a parallel port */
#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/version.h>
#include <linux/cons.h>
#include <asm/io.h>
#include <rtl_sched.h>
#include "common.h"
RT_TASK mytask;
RT_TASK mytask2;
void fun(int t) {
while(1){
outb(t, LPT_PORT); /* write on the parallel port */
rt_task_wait();
}
}
int init_module(void)
{
RTIME now = rt_get_time();
/* this task will be setting the bit */
rt_task_init(&mytask, fun, 0xffff, 3000, 4);
/* this task will be resetting the bit */
rt_task_init(&mytask2, fun, 0, 3000, 5);
/* the 2 tasks run periodically with an offset of 200000 time units */
rt_task_make_periodic(&mytask, now + 3000000, 500000);
rt_task_make_periodic(&mytask2, now + 3200000, 500000);
return 0;
}
void cleanup_module(void)
{
rt_task_delete(&mytask);
rt_task_delete(&mytask2);
}
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