comedi0.c

最新rtlinux内核源码

/*
 * Written by Der Herr Hofrat, [e-mail]
 * (C) 2002,2007 Wind River Systems, Inc.
 * License: GPL Version 2
 */
/*
 * Trivial check if comedi compiles properly - this does nothing but 
 * open /dev/comedi0 and dump the infos it finds (if any)
 */

#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/version.h>
#include <linux/types.h>
#include <linux/errno.h>
#include <linux/bitops.h>
#include <asm/semaphore.h> /* for synchronizing the exported functions */
#include <asm/bitops.h>    /* for set/clear bit                        */
#include <linux/malloc.h>
#include <linux/string.h> /* some memory copyage */
#include <linux/fs.h> /* for the determine_minor() functionality */

#include <rtl.h>
#include <rtl_fifo.h>
#include <rtl_sched.h>
#include <rtl_sync.h>
#include <mbuff.h>

#include <linux/comedilib.h>

unsigned int subdevice;
unsigned int channel;
sampl_t *data;

unsigned int mask;
comedi_t *dev;



int init_module(void) {
	dev=comedi_open("/dev/comedi0");

	/* open /dev/comedi0 - assigened iwth comedi_config first */
	if(!dev){
		printk("/dev/comedi0 not available\n");
		return 1;
	}
	
	/* get the devices available */
	printk("Comedi Version: %x\n",comedi_get_version_code(dev));
	printk("Driver assigned to comedi0: %s\n",comedi_get_driver_name(dev));
	printk("  Subdevices found: %d\n",comedi_get_n_subdevices(dev));
	/+ add anything else of interest here... */

	return 0;
}

void cleanup_module(void) {
	comedi_close(dev);
}