FreeCalypso > hg > fc-rfcal-tools

annotate vcxo-manual/linear.c @ 4:504d3cbb95b5

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
fc-cmu200d: signal-gen-setup implemented
author Mychaela Falconia <falcon@freecalypso.org>
date Sun, 21 May 2017 07:21:17 +0000
parents bd62be88259d
children
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
0
bd62be88259d initial import of rfcal code and docs from freecalypso-tools repository
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1 #include <stdio.h>
bd62be88259d initial import of rfcal code and docs from freecalypso-tools repository
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2 #include <stdlib.h>
bd62be88259d initial import of rfcal code and docs from freecalypso-tools repository
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
3 #include "meas.h"
bd62be88259d initial import of rfcal code and docs from freecalypso-tools repository
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
4
bd62be88259d initial import of rfcal code and docs from freecalypso-tools repository
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
5 struct meas meas[2];
bd62be88259d initial import of rfcal code and docs from freecalypso-tools repository
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
6 float lin_a, lin_b, target_off;
bd62be88259d initial import of rfcal code and docs from freecalypso-tools repository
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
7 int target_dac;
bd62be88259d initial import of rfcal code and docs from freecalypso-tools repository
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
8
bd62be88259d initial import of rfcal code and docs from freecalypso-tools repository
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
9 main(argc, argv)
bd62be88259d initial import of rfcal code and docs from freecalypso-tools repository
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
10 char **argv;
bd62be88259d initial import of rfcal code and docs from freecalypso-tools repository
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
11 {
bd62be88259d initial import of rfcal code and docs from freecalypso-tools repository
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
12 if (argc < 2 || argc > 3) {
bd62be88259d initial import of rfcal code and docs from freecalypso-tools repository
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
13 fprintf(stderr, "usage: %s meas-file [target]\n", argv[0]);
bd62be88259d initial import of rfcal code and docs from freecalypso-tools repository
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
14 exit(1);
bd62be88259d initial import of rfcal code and docs from freecalypso-tools repository
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
15 }
bd62be88259d initial import of rfcal code and docs from freecalypso-tools repository
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
16 read_meas_file(argv[1], meas, 2);
bd62be88259d initial import of rfcal code and docs from freecalypso-tools repository
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
17 if (argc > 2)
bd62be88259d initial import of rfcal code and docs from freecalypso-tools repository
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
18 target_off = atof(argv[2]);
bd62be88259d initial import of rfcal code and docs from freecalypso-tools repository
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
19 else
bd62be88259d initial import of rfcal code and docs from freecalypso-tools repository
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
20 target_off = 0;
bd62be88259d initial import of rfcal code and docs from freecalypso-tools repository
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
21 lin_a = (float)(meas[1].freq_offset - meas[0].freq_offset) /
bd62be88259d initial import of rfcal code and docs from freecalypso-tools repository
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
22 (float)(meas[1].dac_value - meas[0].dac_value);
bd62be88259d initial import of rfcal code and docs from freecalypso-tools repository
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
23 lin_b = (float)meas[1].freq_offset - lin_a * meas[1].dac_value;
bd62be88259d initial import of rfcal code and docs from freecalypso-tools repository
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
24 target_dac = (target_off - lin_b) / lin_a;
bd62be88259d initial import of rfcal code and docs from freecalypso-tools repository
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
25 printf("%d\n", target_dac);
bd62be88259d initial import of rfcal code and docs from freecalypso-tools repository
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
26 exit(0);
bd62be88259d initial import of rfcal code and docs from freecalypso-tools repository
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
27 }