334 lines
10 KiB
C
334 lines
10 KiB
C
/** \file
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* \brief Example code for Simple Open EtherCAT master
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*
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* Usage : red_test [ifname1] [ifname2] [cycletime]
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* ifname is NIC interface, f.e. eth0
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* cycletime in us, f.e. 500
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*
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* This is a redundancy test.
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*
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* (c)Arthur Ketels 2008
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*/
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#include <stdio.h>
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#include <stdlib.h>
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#include <sys/time.h>
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#include <unistd.h>
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#include <sched.h>
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#include <string.h>
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#include <sys/time.h>
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#include <time.h>
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#include <pthread.h>
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#include <math.h>
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#include "ethercat.h"
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#define NSEC_PER_SEC 1000000000
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#define EC_TIMEOUTMON 500
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struct sched_param schedp;
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char IOmap[4096];
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pthread_t thread1, thread2;
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struct timeval tv, t1, t2;
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int dorun = 0;
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int deltat, tmax = 0;
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int64 toff, gl_delta;
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int DCdiff;
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int os;
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uint8 ob;
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uint16 ob2;
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uint8 *digout = 0;
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int expectedWKC;
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boolean needlf;
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volatile int wkc;
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boolean inOP;
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uint8 currentgroup = 0;
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void redtest(char *ifname, char *ifname2)
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{
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int cnt, i, j, oloop, iloop;
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printf("Starting Redundant test\n");
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/* initialise SOEM, bind socket to ifname */
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// if (ec_init_redundant(ifname, ifname2))
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if (ec_init(ifname))
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{
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printf("ec_init on %s succeeded.\n",ifname);
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/* find and auto-config slaves */
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if ( ec_config(FALSE, &IOmap) > 0 )
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{
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printf("%d slaves found and configured.\n",ec_slavecount);
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/* wait for all slaves to reach SAFE_OP state */
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ec_statecheck(0, EC_STATE_SAFE_OP, EC_TIMEOUTSTATE);
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/* configure DC options for every DC capable slave found in the list */
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ec_configdc();
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/* read indevidual slave state and store in ec_slave[] */
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ec_readstate();
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for(cnt = 1; cnt <= ec_slavecount ; cnt++)
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{
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printf("Slave:%d Name:%s Output size:%3dbits Input size:%3dbits State:%2d delay:%d.%d\n",
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cnt, ec_slave[cnt].name, ec_slave[cnt].Obits, ec_slave[cnt].Ibits,
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ec_slave[cnt].state, (int)ec_slave[cnt].pdelay, ec_slave[cnt].hasdc);
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printf(" Out:%8.8x,%4d In:%8.8x,%4d\n",
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(int)ec_slave[cnt].outputs, ec_slave[cnt].Obytes, (int)ec_slave[cnt].inputs, ec_slave[cnt].Ibytes);
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/* check for EL2004 or EL2008 */
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if( !digout && ((ec_slave[cnt].eep_id == 0x0af83052) || (ec_slave[cnt].eep_id == 0x07d83052)))
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{
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digout = ec_slave[cnt].outputs;
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}
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}
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expectedWKC = (ec_group[0].outputsWKC * 2) + ec_group[0].inputsWKC;
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printf("Calculated workcounter %d\n", expectedWKC);
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printf("Request operational state for all slaves\n");
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ec_slave[0].state = EC_STATE_OPERATIONAL;
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/* request OP state for all slaves */
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ec_writestate(0);
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/* activate cyclic process data */
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dorun = 1;
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/* wait for all slaves to reach OP state */
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ec_statecheck(0, EC_STATE_OPERATIONAL, 5 * EC_TIMEOUTSTATE);
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oloop = ec_slave[0].Obytes;
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if ((oloop == 0) && (ec_slave[0].Obits > 0)) oloop = 1;
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if (oloop > 8) oloop = 8;
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iloop = ec_slave[0].Ibytes;
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if ((iloop == 0) && (ec_slave[0].Ibits > 0)) iloop = 1;
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if (iloop > 8) iloop = 8;
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if (ec_slave[0].state == EC_STATE_OPERATIONAL )
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{
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printf("Operational state reached for all slaves.\n");
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inOP = TRUE;
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/* acyclic loop 5000 x 20ms = 10s */
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for(i = 1; i <= 5000; i++)
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{
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printf("Processdata cycle %5d , Wck %3d, DCtime %12lld, dt %12lld, O:",
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dorun, wkc , ec_DCtime, gl_delta);
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for(j = 0 ; j < oloop; j++)
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{
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printf(" %2.2x", *(ec_slave[0].outputs + j));
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}
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printf(" I:");
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for(j = 0 ; j < iloop; j++)
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{
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printf(" %2.2x", *(ec_slave[0].inputs + j));
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}
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printf("\r");
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fflush(stdout);
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osal_usleep(20000);
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}
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dorun = 0;
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inOP = FALSE;
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}
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else
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{
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printf("Not all slaves reached operational state.\n");
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ec_readstate();
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for(i = 1; i<=ec_slavecount ; i++)
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{
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if(ec_slave[i].state != EC_STATE_OPERATIONAL)
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{
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printf("Slave %d State=0x%2.2x StatusCode=0x%4.4x : %s\n",
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i, ec_slave[i].state, ec_slave[i].ALstatuscode, ec_ALstatuscode2string(ec_slave[i].ALstatuscode));
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}
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}
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}
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printf("Request safe operational state for all slaves\n");
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ec_slave[0].state = EC_STATE_SAFE_OP;
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/* request SAFE_OP state for all slaves */
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ec_writestate(0);
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}
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else
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{
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printf("No slaves found!\n");
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}
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printf("End redundant test, close socket\n");
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/* stop SOEM, close socket */
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ec_close();
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}
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else
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{
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printf("No socket connection on %s\nExcecute as root\n",ifname);
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}
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}
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/* add ns to timespec */
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void add_timespec(struct timespec *ts, int64 addtime)
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{
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int64 sec, nsec;
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nsec = addtime % NSEC_PER_SEC;
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sec = (addtime - nsec) / NSEC_PER_SEC;
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ts->tv_sec += sec;
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ts->tv_nsec += nsec;
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if ( ts->tv_nsec >= NSEC_PER_SEC )
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{
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nsec = ts->tv_nsec % NSEC_PER_SEC;
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ts->tv_sec += (ts->tv_nsec - nsec) / NSEC_PER_SEC;
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ts->tv_nsec = nsec;
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}
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}
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/* PI calculation to get linux time synced to DC time */
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void ec_sync(int64 reftime, int64 cycletime , int64 *offsettime)
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{
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static int64 integral = 0;
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int64 delta;
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/* set linux sync point 50us later than DC sync, just as example */
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delta = (reftime - 50000) % cycletime;
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if(delta> (cycletime / 2)) { delta= delta - cycletime; }
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if(delta>0){ integral++; }
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if(delta<0){ integral--; }
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*offsettime = -(delta / 100) - (integral / 20);
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gl_delta = delta;
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}
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/* RT EtherCAT thread */
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OSAL_THREAD_FUNC_RT ecatthread(void *ptr)
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{
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struct timespec ts, tleft;
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int ht;
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int64 cycletime;
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clock_gettime(CLOCK_MONOTONIC, &ts);
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ht = (ts.tv_nsec / 1000000) + 1; /* round to nearest ms */
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ts.tv_nsec = ht * 1000000;
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cycletime = *(int*)ptr * 1000; /* cycletime in ns */
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toff = 0;
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dorun = 0;
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ec_send_processdata();
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while(1)
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{
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/* calculate next cycle start */
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add_timespec(&ts, cycletime + toff);
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/* wait to cycle start */
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clock_nanosleep(CLOCK_MONOTONIC, TIMER_ABSTIME, &ts, &tleft);
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if (dorun>0)
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{
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wkc = ec_receive_processdata(EC_TIMEOUTRET);
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dorun++;
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/* if we have some digital output, cycle */
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if( digout ) *digout = (uint8) ((dorun / 16) & 0xff);
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if (ec_slave[0].hasdc)
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{
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/* calulate toff to get linux time and DC synced */
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ec_sync(ec_DCtime, cycletime, &toff);
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}
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ec_send_processdata();
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}
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}
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}
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OSAL_THREAD_FUNC ecatcheck( void *ptr )
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{
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int slave;
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while(1)
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{
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if( inOP && ((wkc < expectedWKC) || ec_group[currentgroup].docheckstate))
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{
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if (needlf)
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{
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needlf = FALSE;
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printf("\n");
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}
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/* one ore more slaves are not responding */
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ec_group[currentgroup].docheckstate = FALSE;
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ec_readstate();
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for (slave = 1; slave <= ec_slavecount; slave++)
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{
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if ((ec_slave[slave].group == currentgroup) && (ec_slave[slave].state != EC_STATE_OPERATIONAL))
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{
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ec_group[currentgroup].docheckstate = TRUE;
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if (ec_slave[slave].state == (EC_STATE_SAFE_OP + EC_STATE_ERROR))
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{
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printf("ERROR : slave %d is in SAFE_OP + ERROR, attempting ack.\n", slave);
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ec_slave[slave].state = (EC_STATE_SAFE_OP + EC_STATE_ACK);
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ec_writestate(slave);
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}
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else if(ec_slave[slave].state == EC_STATE_SAFE_OP)
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{
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printf("WARNING : slave %d is in SAFE_OP, change to OPERATIONAL.\n", slave);
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ec_slave[slave].state = EC_STATE_OPERATIONAL;
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ec_writestate(slave);
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}
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else if(ec_slave[slave].state > EC_STATE_NONE)
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{
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if (ec_reconfig_slave(slave, EC_TIMEOUTMON))
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{
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ec_slave[slave].islost = FALSE;
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printf("MESSAGE : slave %d reconfigured\n",slave);
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}
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}
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else if(!ec_slave[slave].islost)
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{
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/* re-check state */
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ec_statecheck(slave, EC_STATE_OPERATIONAL, EC_TIMEOUTRET);
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if (ec_slave[slave].state == EC_STATE_NONE)
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{
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ec_slave[slave].islost = TRUE;
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printf("ERROR : slave %d lost\n",slave);
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}
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}
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}
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if (ec_slave[slave].islost)
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{
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if(ec_slave[slave].state == EC_STATE_NONE)
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{
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if (ec_recover_slave(slave, EC_TIMEOUTMON))
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{
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ec_slave[slave].islost = FALSE;
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printf("MESSAGE : slave %d recovered\n",slave);
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}
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}
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else
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{
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ec_slave[slave].islost = FALSE;
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printf("MESSAGE : slave %d found\n",slave);
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}
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}
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}
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if(!ec_group[currentgroup].docheckstate)
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printf("OK : all slaves resumed OPERATIONAL.\n");
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}
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osal_usleep(10000);
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}
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}
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#define stack64k (64 * 1024)
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int main(int argc, char *argv[])
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{
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int ctime;
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printf("SOEM (Simple Open EtherCAT Master)\nRedundancy test\n");
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if (argc > 3)
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{
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dorun = 0;
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ctime = atoi(argv[3]);
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/* create RT thread */
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osal_thread_create_rt(&thread1, stack64k * 2, &ecatthread, (void*) &ctime);
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/* create thread to handle slave error handling in OP */
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osal_thread_create(&thread2, stack64k * 4, &ecatcheck, NULL);
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/* start acyclic part */
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redtest(argv[1],argv[2]);
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}
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else
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{
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printf("Usage: red_test ifname1 ifname2 cycletime\nifname = eth0 for example\ncycletime in us\n");
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}
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printf("End program\n");
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return (0);
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}
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