fp@0: /******************************************************************************
fp@0:  *
fp@0:  * ec_mini.c
fp@0:  *
fp@0:  * Minimalmodul für EtherCAT
fp@13:  *
fp@0:  * $Id$
fp@0:  *
fp@42:  *****************************************************************************/
fp@0: 
fp@0: #include <linux/module.h>
fp@24: #include <linux/delay.h>
fp@22: #include <linux/timer.h>
fp@0: 
fp@0: #include "../drivers/ec_master.h"
fp@0: #include "../drivers/ec_device.h"
fp@0: #include "../drivers/ec_types.h"
fp@27: #include "../drivers/ec_module.h"
fp@0: 
fp@42: /*****************************************************************************/
fp@5: 
fp@27: // Auskommentieren, wenn keine zyklischen Daten erwuenscht
fp@5: #define ECAT_CYCLIC_DATA
fp@5: 
fp@42: /*****************************************************************************/
fp@5: 
fp@5: static EtherCAT_master_t *ecat_master = NULL;
fp@27: 
fp@5: static EtherCAT_slave_t ecat_slaves[] =
fp@5: {
fp@0: #if 0
fp@22:     // Block 1
fp@42:     ECAT_INIT_SLAVE(Beckhoff_EK1100, 1),
fp@42:     ECAT_INIT_SLAVE(Beckhoff_EL4102, 1),
fp@42:     ECAT_INIT_SLAVE(Beckhoff_EL3162, 1),
fp@42:     ECAT_INIT_SLAVE(Beckhoff_EL1014, 1),
fp@42: 
fp@42:     ECAT_INIT_SLAVE(Beckhoff_EL4102, 1),
fp@42:     ECAT_INIT_SLAVE(Beckhoff_EL4102, 1),
fp@42:     ECAT_INIT_SLAVE(Beckhoff_EL4102, 1),
fp@42: 
fp@42:     ECAT_INIT_SLAVE(Beckhoff_EL3162, 1),
fp@42:     ECAT_INIT_SLAVE(Beckhoff_EL3162, 1),
fp@42:     ECAT_INIT_SLAVE(Beckhoff_EL3162, 1),
fp@42:     ECAT_INIT_SLAVE(Beckhoff_EL3102, 1),
fp@42:     ECAT_INIT_SLAVE(Beckhoff_EL3102, 1),
fp@42:     ECAT_INIT_SLAVE(Beckhoff_EL3102, 1),
fp@24: 
fp@24: #endif
fp@24: 
fp@24: #if 1
fp@22:     // Block 2
fp@42:     ECAT_INIT_SLAVE(Beckhoff_EK1100, 1),
fp@42:     ECAT_INIT_SLAVE(Beckhoff_EL4102, 1),
fp@42:     ECAT_INIT_SLAVE(Beckhoff_EL1014, 1),
fp@42:     ECAT_INIT_SLAVE(Beckhoff_EL3162, 1),
fp@42:     ECAT_INIT_SLAVE(Beckhoff_EL2004, 1),
fp@42:     ECAT_INIT_SLAVE(Beckhoff_EL3102, 1),
fp@42:     ECAT_INIT_SLAVE(Beckhoff_EL2004, 1),
fp@42:     ECAT_INIT_SLAVE(Beckhoff_EL2004, 1),
fp@42:     ECAT_INIT_SLAVE(Beckhoff_EL2004, 1),
fp@42:     ECAT_INIT_SLAVE(Beckhoff_EL2004, 1),
fp@42:     ECAT_INIT_SLAVE(Beckhoff_EL2004, 1),
fp@22: 
fp@22:     // Block 3
fp@42:     ECAT_INIT_SLAVE(Beckhoff_EK1100, 1),
fp@42:     ECAT_INIT_SLAVE(Beckhoff_EL1014, 1),
fp@42:     ECAT_INIT_SLAVE(Beckhoff_EL1014, 1),
fp@42:     ECAT_INIT_SLAVE(Beckhoff_EL1014, 1),
fp@42:     ECAT_INIT_SLAVE(Beckhoff_EL1014, 1),
fp@42:     ECAT_INIT_SLAVE(Beckhoff_EL1014, 1),
fp@42:     ECAT_INIT_SLAVE(Beckhoff_EL2004, 1),
fp@42:     ECAT_INIT_SLAVE(Beckhoff_EL2004, 1),
fp@42:     ECAT_INIT_SLAVE(Beckhoff_EL2004, 1),
fp@42:     ECAT_INIT_SLAVE(Beckhoff_EL2004, 1),
fp@42:     ECAT_INIT_SLAVE(Beckhoff_EL1014, 1),
fp@42:     ECAT_INIT_SLAVE(Beckhoff_EL1014, 1),
fp@42:     ECAT_INIT_SLAVE(Beckhoff_EL1014, 1)
fp@24: #endif
fp@0: };
fp@0: 
fp@0: #define ECAT_SLAVES_COUNT (sizeof(ecat_slaves) / sizeof(EtherCAT_slave_t))
fp@22: 
fp@5: #ifdef ECAT_CYCLIC_DATA
fp@22: 
fp@24: int value;
fp@0: int dig1;
fp@22: 
fp@22: struct timer_list timer;
fp@22: unsigned long last_start_jiffies;
fp@22: 
fp@22: #endif // ECAT_CYCLIC_DATA
fp@0: 
fp@0: /******************************************************************************
fp@0:  *
fp@0:  * Function: next2004
fp@0:  *
fp@0:  *****************************************************************************/
fp@0: 
fp@5: #ifdef ECAT_CYCLIC_DATA
fp@22: 
fp@0: static int next2004(int *wrap)
fp@0: {
fp@22:     static int i = 0;
fp@22:     unsigned int j = 0;
fp@22: 
fp@22:     *wrap = 0;
fp@22: 
fp@22:     for (j = 0; j < ECAT_SLAVES_COUNT; j++)
fp@22:     {
fp@22:         i++;
fp@22: 
fp@22:         i %= ECAT_SLAVES_COUNT;
fp@22: 
fp@22:         if (i == 0) *wrap = 1;
fp@22: 
fp@22:         if (ecat_slaves[i].desc == Beckhoff_EL2004)
fp@22:         {
fp@22:             return i;
fp@22:         }
fp@22:     }
fp@22: 
fp@22:     return -1;
fp@0: }
fp@0: #endif
fp@0: 
fp@0: /******************************************************************************
fp@0:  *
fp@5:  * Function: run
fp@0:  *
fp@0:  * Beschreibung: Zyklischer Prozess
fp@0:  *
fp@0:  *****************************************************************************/
fp@0: 
fp@5: #ifdef ECAT_CYCLIC_DATA
fp@22: 
fp@22: static void run(unsigned long data)
fp@5: {
fp@42:   static int ms = 0;
fp@22:     static int cnt = 0;
fp@22:     static unsigned long int k = 0;
fp@22:     static int firstrun = 1;
fp@22: 
fp@24:     static int klemme = 0;
fp@22:     static int kanal = 0;
fp@22:     static int up_down = 0;
fp@22:     int wrap = 0;
fp@22: 
fp@22:     ms++;
fp@22:     ms %= 1000;
fp@0: 
fp@42:     if (firstrun) klemme = next2004(&wrap);
fp@22: 
fp@22:     if (cnt++ > 20)
fp@22:     {
fp@22:         cnt = 0;
fp@22: 
fp@22:         if (++kanal > 3)
fp@22:         {
fp@22:             kanal = 0;
fp@22:             klemme = next2004(&wrap);
fp@22: 
fp@22:             if (wrap == 1)
fp@22:             {
fp@22:                 if (up_down == 1) up_down = 0;
fp@22:                 else up_down = 1;
fp@22:             }
fp@22:         }
fp@22:     }
fp@22: 
fp@42:     if (klemme >= 0)
fp@42:         EtherCAT_write_value(&ecat_slaves[klemme], kanal, up_down);
fp@42: 
fp@42:     // Prozessdaten lesen und schreiben
fp@22:     rdtscl(k);
fp@47:     EtherCAT_process_data_cycle(ecat_master, 1, 100);
fp@22:     firstrun = 0;
fp@22: 
fp@24:     timer.expires += HZ / 1000;
fp@22:     add_timer(&timer);
fp@0: }
fp@22: 
fp@22: #endif // ECAT_CYCLIC_DATA
fp@0: 
fp@0: /******************************************************************************
fp@22:  *
fp@22:  * Function: init
fp@22:  *
fp@42:  *****************************************************************************/
fp@22: 
fp@22: int __init init_module()
fp@5: {
fp@42:     unsigned int i;
fp@42: 
fp@36:     printk(KERN_INFO "=== Starting Minimal EtherCAT environment... ===\n");
fp@36: 
fp@36:     if ((ecat_master = EtherCAT_request(0)) == NULL) {
fp@36:         printk(KERN_ERR "EtherCAT master 0 not available!\n");
fp@36:         goto out_return;
fp@36:     }
fp@36: 
fp@36:     printk("Checking EtherCAT slaves.\n");
fp@36: 
fp@42:     if (EtherCAT_check_slaves(ecat_master, ecat_slaves,
fp@42:                               ECAT_SLAVES_COUNT) != 0) {
fp@36:         printk(KERN_ERR "EtherCAT: Could not init slaves!\n");
fp@36:         goto out_release_master;
fp@36:     }
fp@36: 
fp@36:     printk("Activating all EtherCAT slaves.\n");
fp@36: 
fp@42:     for (i = 0; i < ECAT_SLAVES_COUNT; i++) {
fp@42:         if (EtherCAT_activate_slave(ecat_master, &ecat_slaves[i]) != 0) {
fp@42:             printk(KERN_ERR "EtherCAT: Could not activate slave %i!\n", i);
fp@42:             goto out_release_master;
fp@42:         }
fp@36:     }
fp@36: 
fp@36: #ifdef ECAT_CYCLIC_DATA
fp@36:     printk("Starting cyclic sample thread.\n");
fp@36: 
fp@36:     init_timer(&timer);
fp@36: 
fp@36:     timer.function = run;
fp@36:     timer.data = 0;
fp@36:     timer.expires = jiffies+10; // Das erste Mal sofort feuern
fp@36:     last_start_jiffies = timer.expires;
fp@36:     add_timer(&timer);
fp@36: 
fp@36:     printk("Initialised sample thread.\n");
fp@36: #endif
fp@36: 
fp@36:     printk(KERN_INFO "=== Minimal EtherCAT environment started. ===\n");
fp@36: 
fp@36:     return 0;
fp@36: 
fp@36:  out_release_master:
fp@36:   EtherCAT_release(ecat_master);
fp@36: 
fp@36:  out_return:
fp@36:   return -1;
fp@0: }
fp@0: 
fp@0: /******************************************************************************
fp@22:  *
fp@22:  * Function: cleanup
fp@22:  *
fp@42:  *****************************************************************************/
fp@22: 
fp@22: void __exit cleanup_module()
fp@0: {
fp@42:     unsigned int i;
fp@42: 
fp@26:     printk(KERN_INFO "=== Stopping Minimal EtherCAT environment... ===\n");
fp@0: 
fp@22:     if (ecat_master)
fp@22:     {
fp@27: #ifdef ECAT_CYCLIC_DATA
fp@36:         del_timer_sync(&timer);
fp@22: #endif // ECAT_CYCLIC_DATA
fp@22: 
fp@36:         printk(KERN_INFO "Deactivating slaves.\n");
fp@42: 
fp@42:         for (i = 0; i < ECAT_SLAVES_COUNT; i++) {
fp@42:             EtherCAT_deactivate_slave(ecat_master, &ecat_slaves[i]);
fp@42:         }
fp@36: 
fp@36:         EtherCAT_release(ecat_master);
fp@27:     }
fp@22: 
fp@26:     printk(KERN_INFO "=== Minimal EtherCAT environment stopped. ===\n");
fp@0: }
fp@0: 
fp@0: /*****************************************************************************/
fp@0: 
fp@0: MODULE_LICENSE("GPL");
fp@0: MODULE_AUTHOR ("Florian Pose <fp@igh-essen.com>");
fp@0: MODULE_DESCRIPTION ("Minimal EtherCAT environment");
fp@0: 
fp@22: module_init(init_module);
fp@22: module_exit(cleanup_module);
fp@0: 
fp@0: /*****************************************************************************/
fp@42: 
fp@42: /* Emacs-Konfiguration
fp@42: ;;; Local Variables: ***
fp@42: ;;; c-basic-offset:4 ***
fp@42: ;;; End: ***
fp@42: */