161 lines
3.6 KiB
C
161 lines
3.6 KiB
C
/******************************************************************************
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*
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* m i n i . c
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*
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* Minimalmodul für EtherCAT
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*
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* $Id$
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*
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*****************************************************************************/
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#include <linux/module.h>
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#include <linux/delay.h>
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#include <linux/timer.h>
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#include "../include/EtherCAT_rt.h"
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/*****************************************************************************/
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// Auskommentieren, wenn keine zyklischen Daten erwuenscht
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#define ECAT_CYCLIC_DATA
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/*****************************************************************************/
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ec_master_t *master = NULL;
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#ifdef ECAT_CYCLIC_DATA
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int value;
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int dig1;
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struct timer_list timer;
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unsigned long last_start_jiffies;
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#endif // ECAT_CYCLIC_DATA
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/******************************************************************************
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*
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* Function: run
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*
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* Beschreibung: Zyklischer Prozess
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*
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*****************************************************************************/
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#ifdef ECAT_CYCLIC_DATA
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static void run(unsigned long data)
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{
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static int ms = 0;
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static unsigned long int k = 0;
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static int firstrun = 1;
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ms++;
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ms %= 1000;
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#if 0
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if (klemme >= 0)
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EtherCAT_write_value(&ecat_slaves[klemme], kanal, up_down);
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#endif
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// Prozessdaten lesen und schreiben
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rdtscl(k);
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EtherCAT_rt_exchange_io(master, 1, 100);
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firstrun = 0;
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timer.expires += HZ / 1000;
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add_timer(&timer);
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}
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#endif // ECAT_CYCLIC_DATA
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/******************************************************************************
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*
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* Function: init
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*
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*****************************************************************************/
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int __init init_mini_module(void)
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{
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printk(KERN_INFO "=== Starting Minimal EtherCAT environment... ===\n");
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if ((master = EtherCAT_rt_request_master(0)) == NULL) {
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printk(KERN_ERR "EtherCAT master 0 not available!\n");
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goto out_return;
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}
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//check_slaves();
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printk("Activating all EtherCAT slaves.\n");
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if (EtherCAT_rt_activate_slaves(master) != 0) {
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printk(KERN_ERR "EtherCAT: Could not activate slaves!\n");
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goto out_release_master;
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}
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#ifdef ECAT_CYCLIC_DATA
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printk("Starting cyclic sample thread.\n");
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init_timer(&timer);
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timer.function = run;
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timer.data = 0;
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timer.expires = jiffies+10; // Das erste Mal sofort feuern
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last_start_jiffies = timer.expires;
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add_timer(&timer);
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printk("Initialised sample thread.\n");
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#endif
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printk(KERN_INFO "=== Minimal EtherCAT environment started. ===\n");
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return 0;
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out_release_master:
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EtherCAT_rt_release_master(master);
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out_return:
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return -1;
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}
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/******************************************************************************
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*
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* Function: cleanup
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*
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*****************************************************************************/
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void __exit cleanup_mini_module(void)
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{
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printk(KERN_INFO "=== Stopping Minimal EtherCAT environment... ===\n");
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if (master)
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{
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#ifdef ECAT_CYCLIC_DATA
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del_timer_sync(&timer);
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#endif // ECAT_CYCLIC_DATA
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printk(KERN_INFO "Deactivating slaves.\n");
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EtherCAT_rt_deactivate_slaves(master);
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EtherCAT_rt_release_master(master);
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}
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printk(KERN_INFO "=== Minimal EtherCAT environment stopped. ===\n");
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}
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/*****************************************************************************/
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MODULE_LICENSE("GPL");
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MODULE_AUTHOR ("Florian Pose <fp@igh-essen.com>");
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MODULE_DESCRIPTION ("Minimal EtherCAT environment");
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module_init(init_mini_module);
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module_exit(cleanup_mini_module);
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/*****************************************************************************/
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/* Emacs-Konfiguration
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;;; Local Variables: ***
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;;; c-basic-offset:4 ***
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;;; End: ***
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*/
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