frontend.cxx File Reference

#include <stdio.h>
#include <stdlib.h>
#include <math.h>
#include <assert.h>
#include "midas.h"
#include "experim.h"
#include "mfe.h"

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Functions
INT	read_trigger_event (char *pevent, INT off)
INT	read_periodic_event (char *pevent, INT off)
INT	poll_trigger_event (INT source, INT count, BOOL test)
INT	frontend_init ()
	Frontend initialization.

Variables
const char *	frontend_name = "Sample Frontend"
const char *	frontend_file_name = __FILE__
BOOL	equipment_common_overwrite = TRUE
EQUIPMENT	equipment []

Function Documentation

frontend_init()

INT frontend_init

(

void

)

Frontend initialization.

Runs once at application startup. We initialize the hardware and optical interfaces and set the equipment status in ODB. We also lock the frontend to once physical cpu core.

Returns

Midas status code

Definition at line 128 of file frontend.cxx.

{
   /* install polling routine */
   install_poll_event(poll_trigger_event);
 
   /* set cache size */
   set_cache_size("SYSTEM", 10000000);
 
   /* put any hardware initialization here */
 
   /* print message and return FE_ERR_HW if frontend should not be started */
   return SUCCESS;
}

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poll_trigger_event()

INT poll_trigger_event	(	INT	source,
		INT	count,
		BOOL	test
	)

Definition at line 152 of file frontend.cxx.

{
   int i;
   DWORD flag;
 
   for (i = 0; i < count; i++) {
      /* poll hardware and set flag to TRUE if new event is available */
      flag = TRUE;
 
      if (flag)
         if (!test)
            return TRUE;
   }
 
   return 0;
}

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read_periodic_event()

INT read_periodic_event	(	char *	pevent,
		INT	off
	)

Definition at line 211 of file frontend.cxx.

{
   UINT32 *pdata;
 
   /* init bank structure */
   bk_init(pevent);
 
   /* create a bank called PRDC */
   bk_create(pevent, "PRDC", TID_UINT32, (void **)&pdata);
 
   /* following code "simulates" some values in sine wave form */
   for (int i = 0; i < 16; i++)
      *pdata++ = 100*sin(M_PI*time(NULL)/60+i/2.0)+100;
 
   bk_close(pevent, pdata);
 
   return bk_size(pevent);
}

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read_trigger_event()

INT read_trigger_event	(	char *	pevent,
		INT	off
	)

Definition at line 176 of file frontend.cxx.

{
   UINT32 *pdata;
 
   /* init bank structure */
   bk_init(pevent);
 
   /* create a bank called ADC0 */
   bk_create(pevent, "ADC0", TID_UINT32, (void **)&pdata);
 
   /* following code "simulates" some ADC data */
   for (int i = 0; i < 4; i++)
      *pdata++ = rand()%1024 + rand()%1024 + rand()%1024 + rand()%1024;
 
   bk_close(pevent, pdata);
 
   /* create another bank called TDC0 */
   bk_create(pevent, "TDC0", TID_UINT32, (void **)&pdata);
 
   /* following code "simulates" some TDC data */
   for (int i = 0; i < 4; i++)
      *pdata++ = rand()%1024 + rand()%1024 + rand()%1024 + rand()%1024;
 
   bk_close(pevent, pdata);
 
   /* limit event rate to 100 Hz. In a real experiment remove this line */
   ss_sleep(10);
 
   return bk_size(pevent);
}

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Variable Documentation

equipment

EQUIPMENT equipment[]

Definition at line 52 of file frontend.cxx.

                        {
 
   {"Trigger",               /* equipment name */
      {1, 0,                 /* event ID, trigger mask */
         "SYSTEM",           /* event buffer */
         EQ_POLLED,          /* equipment type */
         0,                  /* event source */
         "MIDAS",            /* format */
         TRUE,               /* enabled */
         RO_RUNNING |        /* read only when running */
         RO_ODB,             /* and update ODB */
         100,                /* poll for 100ms */
         0,                  /* stop run after this event limit */
         0,                  /* number of sub events */
         0,                  /* don't log history */
         "", "", "", "", "", 0},
      read_trigger_event,    /* readout routine */
   },
 
   {"Periodic",              /* equipment name */
      {2, 0,                 /* event ID, trigger mask */
         "SYSTEM",           /* event buffer */
         EQ_PERIODIC,        /* equipment type */
         0,                  /* event source */
         "MIDAS",            /* format */
         TRUE,               /* enabled */
         RO_RUNNING | RO_TRANSITIONS |   /* read when running and on transitions */
         RO_ODB,             /* and update ODB */
         1000,               /* read every 1000 msec (1 sec) */
         0,                  /* stop run after this event limit */
         0,                  /* number of sub events */
         10,                 /* log history every ten seconds*/
       "", "", "", "", "", 0},
      read_periodic_event,   /* readout routine */
   },
 
   {""}
};

equipment_common_overwrite

BOOL equipment_common_overwrite = TRUE

Definition at line 50 of file frontend.cxx.

frontend_file_name

const char* frontend_file_name = __FILE__

Definition at line 39 of file frontend.cxx.

frontend_name

const char* frontend_name = "Sample Frontend"

Definition at line 37 of file frontend.cxx.