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annotate ad9956.c @ 264:a40c8af8b028

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Improve fake data generator used in testing
author Daniele Nicolodi <daniele.nicolodi@obspm.fr>
date Tue, 16 Jun 2015 17:38:30 +0200
parents 8d9a4c5eb7a4
children
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1 #ifdef _CVI_
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2 #include <ansi_c.h>
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3 #include <toolbox.h>
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4 #else
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5 #include <stdio.h>
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6 #include <stdlib.h>
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7 #include <unistd.h>
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8 #include <string.h>
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9 #include <errno.h>
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10 #include <math.h>
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11 #endif
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12
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13 #include "dds.h"
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14 #include "xsocket.h"
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15 #include "ad9956.h"
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17
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18 int ad9956_init(struct ad9956 *d, const char *hostname, double clock)
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19 {
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20 int r;
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21 char buffer[256];
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22 uint64 value;
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23
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24 d->sock = xsocket(hostname, 1234);
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25 d->profile = 0;
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26 d->clock = clock;
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27
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28 r = xconnect(d->sock);
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29 if (r < 0)
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30 return r;
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31
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32 /* check compatibility */
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33 r = xask(d->sock, "REVISION", strlen("REVISION"), buffer, sizeof(buffer));
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34 if (r < 0)
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35 return r;
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36 if (atoi(buffer) != REVISION)
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37 return -EINVAL;
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38
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39 /* disable clock divider */
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40 r = xask(d->sock, "GET CFR2", strlen("GET CFR2"), buffer, sizeof(buffer));
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41 if (r < 0)
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42 return r;
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43
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44 r = strtouint64(buffer, &value);
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45 if (r < 0)
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46 return r;
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47
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48 value = value | (1ULL << 16);
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49 r = xcommand(d->sock, "SET CFR2 0x%X", value);
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50 if (r < 0)
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51 return r;
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52
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53 return 0;
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54 }
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55
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56
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57 int ad9956_set_frequency(struct ad9956 *d, double f)
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58 {
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59 int r;
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60 uint64 value = ftw(d->clock, f);
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61
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62 r = xcommand(d->sock, "SET PCR%d 0x%llX", d->profile, value);
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63 if (r < 0)
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64 return r;
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65
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66 d->frequency = freq(d->clock, value);
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67
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68 return 0;
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69 }
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71
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72 int ad9956_get_frequency(struct ad9956 *d, double *f)
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73 {
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74 int r, n;
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75 uint64 value;
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76 char buffer[256];
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77
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78 n = snprintf(buffer, sizeof(buffer), "GET PCR%d", d->profile);
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79 r = xask(d->sock, buffer, n, buffer, sizeof(buffer));
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80 if (r < 0)
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81 return r;
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82
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83 r = strtouint64(buffer, &value);
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84 if (r < 0)
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85 return r;
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86
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87 d->frequency = freq(d->clock, value);
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88 if (f)
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89 *f = d->frequency;
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90
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91 return 0;
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92 }
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93
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94
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95 int ad9956_set_sweep_rate(struct ad9956 *d, double rate)
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96 {
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97 int64 value = (int64)ftw(d->clock, fabs(rate * 0.01));
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98 if (rate < 0.0)
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99 value = -value;
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100
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101 return xcommand(d->sock, "SWEEP SET DFTW %lld", value);
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102 }
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103
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104
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105 int ad9956_sweep_start(struct ad9956 *d)
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106 {
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107 return xcommand(d->sock, "SWEEP START");
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108 }
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109
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110
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111 int ad9956_sweep_stop(struct ad9956 *d)
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112 {
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113 return xcommand(d->sock, "SWEEP STOP");
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114 }