largefe.cxx

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/********************************************************************\
 
  Name:         largefe.c
  Created by:   Stefan Ritt
 
  Contents:     Experiment specific readout code (user part) of
                Midas frontend. This example demonstrates the
                implementation of the large fragmented event.
 
  $Id:$
 
\********************************************************************/
 
#include <stdio.h>
#include <stdlib.h>
#include "midas.h"
#include "mfe.h"
 
/*-- Globals -------------------------------------------------------*/
/* The frontend name (client name) as seen by other MIDAS clients   */
const char *frontend_name = "largefe";
 
/* The frontend file name, don't change it */
const char *frontend_file_name = __FILE__;
 
/* frontend_loop is called periodically if this variable is TRUE    */
BOOL frontend_call_loop = TRUE;
 
/* a frontend status page is displayed with this frequency in ms */
INT display_period = 0000;
 
/* maximum event size produced by this frontend */
INT max_event_size = 10000;
 
/* maximum event size for fragmented events (EQ_FRAGMENTED) */
INT max_event_size_frag = 5 * 1024 * 1024;
 
/* buffer size to hold events */
INT event_buffer_size = 10 * 10000;
 
/*-- Function declarations -----------------------------------------*/
 
INT frontend_init();
INT frontend_exit();
INT begin_of_run(INT run_number, char *error);
INT end_of_run(INT run_number, char *error);
INT pause_run(INT run_number, char *error);
INT resume_run(INT run_number, char *error);
INT frontend_loop();
INT read_large_event(char *pevent, INT off);
/*-- Equipment list ------------------------------------------------*/
 
#undef USE_INT
BOOL equipment_common_overwrite = FALSE;
 
EQUIPMENT equipment[] = {
 
   {"large",                 /* equipment name */
      {3, 0,                    /* event ID, trigger mask */
      "SYSTEM",                /* event buffer */
      EQ_PERIODIC | EQ_FRAGMENTED,     /* equipment type */
      0,                       /* event source */
      "MIDAS",                 /* format */
      TRUE,                    /* enabled */
      RO_ALWAYS,               /* read when running and on transitions */
      2000,                    /* read every 2 sec */
      0,                       /* stop run after this event limit */
      0,                       /* number of sub events */
      0,                       /* log history */
      "", "", ""},
      read_large_event,        /* readout routine */
      NULL, NULL,              /* keep null */
      NULL,                    /* init string */
      },
 
   {""}
};
 
/********************************************************************\
              Callback routines for system transitions
 
  These routines are called whenever a system transition like start/
  stop of a run occurs. The routines are called on the following
  occations:
 
  frontend_init:  When the frontend program is started. This routine
                  should initialize the hardware.
  
  frontend_exit:  When the frontend program is shut down. Can be used
                  to releas any locked resources like memory, commu-
                  nications ports etc.
 
  begin_of_run:   When a new run is started. Clear scalers, open
                  rungates, etc.
 
  end_of_run:     Called on a request to stop a run. Can send 
                  end-of-run event and close run gates.
 
  pause_run:      When a run is paused. Should disable trigger events.
 
  resume_run:     When a run is resumed. Should enable trigger events.
 
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          \********************************************************************//*-- Frontend Init -------------------------------------------------*/
INT frontend_init()
{
   return SUCCESS;
}
 
/*-- Frontend Exit -------------------------------------------------*/
 
INT frontend_exit()
{
   return SUCCESS;
}
 
/*-- Begin of Run --------------------------------------------------*/
 
INT begin_of_run(INT run_number, char *error)
{
   return SUCCESS;
}
 
/*-- End of Run ----------------------------------------------------*/
 
INT end_of_run(INT run_number, char *error)
{
   return SUCCESS;
}
 
/*-- Pause Run -----------------------------------------------------*/
 
INT pause_run(INT run_number, char *error)
{
   return SUCCESS;
}
 
/*-- Resuem Run ----------------------------------------------------*/
 
INT resume_run(INT run_number, char *error)
{
   return SUCCESS;
}
 
/*-- Frontend Loop -------------------------------------------------*/
INT frontend_loop()
{
   return SUCCESS;
}
 
/*------------------------------------------------------------------*/
 
/********************************************************************\
  
  Readout routines for different events
 
\********************************************************************/
 
/*-- Trigger event routines ----------------------------------------*/
 
INT poll_event(INT source, INT count, BOOL test)
/* Polling routine for events. Returns TRUE if event
   is available. If test equals TRUE, don't return. The test
   flag is used to time the polling */
{
 
   /* Example for camac
   int i;
   DWORD lam;
 
   for (i = 0; i < count; i++) {
      cam_lam_read(LAM_SOURCE_CRATE(source), &lam);
 
      if (lam & LAM_SOURCE_STATION(source))
         if (!test)
            return lam;
   }
   */
 
   return 0;
}
 
/*-- Interrupt configuration ---------------------------------------*/
 
INT interrupt_configure(INT cmd, INT source, PTYPE adr)
{
   switch (cmd) {
   case CMD_INTERRUPT_ENABLE:
      break;
   case CMD_INTERRUPT_DISABLE:
      break;
   case CMD_INTERRUPT_ATTACH:
      break;
   case CMD_INTERRUPT_DETACH:
      break;
   }
   return SUCCESS;
}
 
 
/*-- Large event --------------------------------------------------*/
INT read_large_event(char *pevent, INT off)
{
   DWORD *pddata;
 
   /* init bank structure */
   bk_init32(pevent);
 
   bk_create(pevent, "BIGG", TID_DWORD, (void **) &pddata);
   memset((char *) pddata, 0x0000, 100);
   pddata += 1000000;
   memset((char *) pddata - 100, 0xFFFF, 100);
   bk_close(pevent, pddata);
 
   return bk_size(pevent);
}