cgitraces.c

/*----------------------------------------------------------------------
 * Copyright (c) 2017 XIA LLC
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, 
 * with or without modification, are permitted provided 
 * that the following conditions are met:
 *
 *   * Redistributions of source code must retain the above 
 *     copyright notice, this list of conditions and the 
 *     following disclaimer.
 *   * Redistributions in binary form must reproduce the 
 *     above copyright notice, this list of conditions and the 
 *     following disclaimer in the documentation and/or other 
 *     materials provided with the distribution.
 *   * Neither the name of XIA LLC
 *     nor the names of its contributors may be used to endorse 
 *     or promote products derived from this software without 
 *     specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND 
 * CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, 
 * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF 
 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 
 * IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE 
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 
 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 
 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 
 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON 
 * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR 
 * TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF 
 * THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 
 * SUCH DAMAGE.
 *----------------------------------------------------------------------*/
#include <stdio.h>
#include <unistd.h>
#include <stdlib.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <time.h>
#include <signal.h>
#include <errno.h>
#include <string.h>
#include <sys/mman.h>

#include "PixieNetDefs.h"
#include "PixieNetCommon.h"


int main(void) {		 

  int fd;
  void *map_addr;
  int size = 4096;
  volatile unsigned int *mapped;
  int k;
  FILE * fil;
  unsigned int adc0[NTRACE_SAMPLES], adc1[NTRACE_SAMPLES], adc2[NTRACE_SAMPLES], adc3[NTRACE_SAMPLES];
  char line[LINESZ];


  // *************** PS/PL IO initialization *********************
  // open the device for PD register I/O
  fd = open("/dev/uio0", O_RDWR);
  if (fd < 0) {
    perror("Failed to open devfile");
    return 1;
  }

  map_addr = mmap( NULL, size, PROT_READ | PROT_WRITE, MAP_SHARED, fd, 0);

  if (map_addr == MAP_FAILED) {
    perror("Failed to mmap");
    return 1;
  }

  mapped = (unsigned int *) map_addr;


   // **************** XIA code begins **********************

   // read 8K samples from ADC register 
   // at this point, no guarantee that sampling is truly periodic
   mapped[AOUTBLOCK] = OB_EVREG;		// switch reads to event data block of addresses
   
   // dummy reads for sampling update
   k = mapped[AADC0] & 0xFFFF;
   k = mapped[AADC1] & 0xFFFF;
   k = mapped[AADC2] & 0xFFFF;
   k = mapped[AADC3] & 0xFFFF;

   for( k = 0; k < NTRACE_SAMPLES; k ++ )
      adc0[k] = mapped[AADC0] & 0xFFFF;
   for( k = 0; k < NTRACE_SAMPLES; k ++ )
      adc1[k] = mapped[AADC1] & 0xFFFF;
   for( k = 0; k < NTRACE_SAMPLES; k ++ )
      adc2[k] = mapped[AADC2] & 0xFFFF;
   for( k = 0; k < NTRACE_SAMPLES; k ++ )
      adc3[k] = mapped[AADC3] & 0xFFFF;

   // read the webpage template and print 
   fil = fopen("adcpage.html","r");
   for( k = 0; k < 95; k ++ )
   {
      fgets(line, LINESZ, fil);     // read from template, first part
      if(k==6)
         printf("<title>Pixie-Net ADC Traces</title>\n");            // "print" to webserver on stdout  
      else if(k==55)
         printf("<h1>Pixie-Net ADC Traces </h1>\n");            // "print" to webserver on stdout  
      else if(k==56)
         printf("[ current read from FPGA ]\n");            // "print" to webserver on stdout  
      else if(k==70)
         printf("<i><p>This page displays the ADC waveforms just read from the Pixie-Net</p>\n");            // "print" to webserver on stdout  
      else if(k==74)  
         printf("<p><b>Do not execute or refresh while a DAQ is in progress</b></p>\n");                     // "print" to webserver on stdout  
      else
         printf("%s",line);            // "print" to webserver on stdout  
   }   
   
   fgets(line, LINESZ, fil);        // read from template, the line listing the ADC.csv file. This is not printed
   printf("       \"sample,adc0,adc1,adc2,adc3\\n\"  +  \n");

   // print the data
   for( k = 0; k < NTRACE_SAMPLES; k ++ )
   {
        printf("      \"%d,%d,%d,%d,%d\\n \"  + \n",k,adc0[k],adc1[k],adc2[k],adc3[k]);
   }
   // comma, not + requred in last line
   printf("      \"%d,%d,%d,%d,%d\\n \"  ,  \n",k,adc0[k-1],adc1[k-1],adc2[k-1],adc3[k-1]);
 
   // finish printing the webpage
   for( k = 96; k < 124; k ++ )
   {
      fgets(line, LINESZ, fil);        // read from template
      printf("%s",line);               // "print" to webserver on stdout
   }   

// clean up  
munmap(map_addr, size);
close(fd);
fclose(fil);
return 0;
}