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/*

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 * Etherlab execution code

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 *

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 * */

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#include <rtdm/rtdm.h>

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#include <native/task.h>

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#include <native/timer.h>

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#include "ecrt.h"

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#include "ec_rtdm.h"

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#ifdef _WINDOWS_H

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  #include "iec_types.h"

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#else

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  #include "iec_std_lib.h"

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#endif

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extern unsigned long long common_ticktime__;

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// declaration of interface variables

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%(located_variables_declaration)s

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// process data

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uint8_t *domain1_pd = NULL;

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%(used_pdo_entry_offset_variables_declaration)s

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const static ec_pdo_entry_reg_t domain1_regs[] = {

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%(used_pdo_entry_configuration)s

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    {}

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};

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/*****************************************************************************/

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%(pdos_configuration_declaration)s

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int rt_fd = -1;

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CstructMstrAttach MstrAttach;

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char rt_dev_file[64];

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long long wait_period_ns = 100000LL;

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// EtherCAT

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static ec_master_t *master = NULL;

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static ec_domain_t *domain1 = NULL;

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static int first_sent=0;

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%(slaves_declaration)s

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/* Beremiz plugin functions */

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int __init_%(location)s(int argc,char **argv)

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{

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    uint32_t abort_code;

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    size_t result_size;

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    int rtstatus;

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	MstrAttach.masterindex = %(master_number)d;

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	master = ecrt_request_master(MstrAttach.masterindex);

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	if (!master) return -1;

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	domain1 = ecrt_master_create_domain(master);

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	if (!domain1) return -1;

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    // slaves PDO configuration

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%(slaves_configuration)s

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    if (ecrt_domain_reg_pdo_entry_list(domain1, domain1_regs)) {

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        fprintf(stderr, "PDO entry registration failed!\n");

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        return -1;

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    }

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	ecrt_master_set_send_interval(master, common_ticktime__);

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    // slaves initialization

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%(slaves_initialization)s

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    // extracting default value for not mapped entry in output PDOs

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%(slaves_output_pdos_default_values_extraction)s

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    sprintf(&rt_dev_file[0],"%%s%%u",EC_RTDM_DEV_FILE_NAME,0);

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    rt_fd = rt_dev_open( &rt_dev_file[0], 0);

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    if (rt_fd < 0) {

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        fprintf(stderr, "Can't open %%s\n", &rt_dev_file[0]);

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        return -1;

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    }

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    // attach the master over rtdm driver

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    MstrAttach.domainindex = ecrt_domain_index(domain1);

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    rtstatus = ecrt_rtdm_master_attach(rt_fd, &MstrAttach);

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    if (rtstatus < 0) {

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        fprintf(stderr, "Cannot attach to master over rtdm\n");

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        return -1;

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    }

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    if (ecrt_master_activate(master))

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        return -1;

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    if (!(domain1_pd = ecrt_domain_data(domain1))) {

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        fprintf(stderr, "domain1_pd:  0x%%.6lx\n", (unsigned long)domain1_pd);

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        return -1;

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    }

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    fprintf(stdout, "Master %(master_number)d activated...\n");

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    first_sent = 0;

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    return 0;

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}

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void __cleanup_%(location)s(void)

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{

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	if (rt_fd >= 0) {

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		rt_dev_close(rt_fd);

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	}

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	//release master

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	ecrt_release_master(master);

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    first_sent = 0;

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}

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void __retrieve_%(location)s(void)

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{

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    // receive ethercat

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    if(first_sent){

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        ecrt_rtdm_master_recieve(rt_fd);

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        ecrt_rtdm_domain_process(rt_fd);

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%(retrieve_variables)s

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    }

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}

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static RTIME _last_occur=0;

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static RTIME _last_publish=0;

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RTIME _current_lag=0;

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RTIME _max_jitter=0;

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static inline RTIME max(RTIME a,RTIME b){return a>b?a:b;}

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void __publish_%(location)s(void)

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{

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%(publish_variables)s

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    ecrt_rtdm_domain_queque(rt_fd);

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    {

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        RTIME current_time = rt_timer_read();

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        // Limit spining max 1/5 of common_ticktime

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        RTIME maxdeadline = current_time + (common_ticktime__ / 5);

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        RTIME deadline = _last_occur ? 

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            _last_occur + common_ticktime__ : 

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            current_time + _max_jitter; 

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        if(deadline > maxdeadline) deadline = maxdeadline;

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        _current_lag = deadline - current_time;

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        if(_last_publish != 0){

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            RTIME period = current_time - _last_publish;

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            if(period > common_ticktime__ )

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                _max_jitter = max(_max_jitter, period - common_ticktime__);

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            else

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                _max_jitter = max(_max_jitter, common_ticktime__ - period);

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        }

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        _last_publish = current_time;

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        _last_occur = current_time;

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        while(current_time < deadline) {

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            _last_occur = current_time; //Drift backward by default

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            current_time = rt_timer_read();

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        }

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        if( _max_jitter * 10 < common_ticktime__ && _current_lag < _max_jitter){

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            //Consuming security margin ?

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            _last_occur = current_time; //Drift forward

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        }

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    }

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    ecrt_rtdm_master_send(rt_fd);

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    first_sent = 1;

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}