FreeCalypso > hg > fc-rfcal-tools

annotate vcxo-manual/readmeas.c @ 45:98abe6bd2042

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autocal: scw implemented for Rx cal
author Mychaela Falconia <falcon@freecalypso.org>
date Sat, 27 May 2017 05:48:04 +0000
parents bd62be88259d
children
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bd62be88259d initial import of rfcal code and docs from freecalypso-tools repository
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1 #include <ctype.h>
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2 #include <stdio.h>
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3 #include <stdlib.h>
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4 #include "meas.h"
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5
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6 read_meas_file(filename, meas_table, nmeas)
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7 char *filename;
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8 struct meas *meas_table;
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9 {
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10 FILE *f;
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11 char linebuf[256], *cp, *np;
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12 int lineno;
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13 struct meas *mtp;
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14 int got_meas;
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15
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16 f = fopen(filename, "r");
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17 if (!f) {
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18 perror(filename);
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19 exit(1);
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20 }
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21 mtp = meas_table;
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22 got_meas = 0;
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23 for (lineno = 1; fgets(linebuf, sizeof linebuf, f); lineno++) {
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24 for (cp = linebuf; isspace(*cp); cp++)
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25 ;
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26 if (*cp == '\0' || *cp == '#')
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27 continue;
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28 if (!isdigit(*cp) && *cp != '-' && *cp != '+') {
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29 inv: fprintf(stderr, "%s line %d: invalid syntax\n",
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30 filename, lineno);
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31 exit(1);
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32 }
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33 np = cp++;
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34 while (isdigit(*cp))
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35 cp++;
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36 if (!isspace(*cp))
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37 goto inv;
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38 mtp->dac_value = atoi(np);
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39 while (isspace(*cp))
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40 cp++;
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41 if (!isdigit(*cp) && *cp != '-' && *cp != '+')
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42 goto inv;
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43 np = cp++;
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44 while (isdigit(*cp))
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45 cp++;
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46 if (*cp && !isspace(*cp))
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47 goto inv;
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48 mtp->freq_offset = atoi(np);
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49 mtp++;
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50 got_meas++;
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51 if (got_meas >= nmeas)
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52 break;
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53 }
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54 fclose(f);
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55 if (got_meas < nmeas) {
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56 fprintf(stderr, "error: need %d measurements, got %d in %s\n",
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57 nmeas, got_meas, filename);
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58 exit(1);
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59 }
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60 return 0;
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61 }