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annotate ad9956.c @ 254:67c8ace9d5f6

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Save time strings in UTC time and rotate datafiles at midnight UTC Time strings '05/06/2015 00:00:00.014' in datafiles were reported in Paris local time and the data files were rotated at midnight Paris time. Switch to use UTC time for both.
author Daniele Nicolodi <daniele@grinta.net>
date Fri, 05 Jun 2015 18:06:12 +0200
parents fcc988c6f841
children 5296f3bcd160
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1 #ifdef _CVI_
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2 #include <winsock2.h>
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3 #include <ansi_c.h>
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4 #include <toolbox.h>
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5 #else
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6 #include <stdio.h>
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7 #include <stdlib.h>
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8 #include <unistd.h>
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9 #include <errno.h>
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10 #include <string.h>
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11 #include <sys/types.h>
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12 #include <sys/socket.h>
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13 #include <netinet/in.h>
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14 #include <arpa/inet.h>
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15 #include <netdb.h>
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16 #include <ctype.h>
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17 #include <stdarg.h>
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18 #endif
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19
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20 #include "dds.h"
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21 #include "ad9956.h"
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22
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23
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24 int ad9956_init(struct ad9956 *d, const char *hostname, double clock)
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25 {
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26 int sock, n, r;
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27 char buffer[256];
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28 struct sockaddr_in addr;
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29 struct hostent* host;
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30 uint64 value;
206
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31
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32 #ifdef _CVI_
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33 WSADATA wsdata;
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34 WSAStartup(MAKEWORD(2,2), &wsdata);
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35 #endif
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36
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37 d->hostname = strdup(hostname);
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38 d->port = 1234;
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39 d->profile = 0;
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40 d->clock = clock;
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41
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42 host = gethostbyname(hostname);
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43 if (host == NULL)
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44 return -1;
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45
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46 sock = socket(AF_INET, SOCK_STREAM, 0);
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47 if (sock < 0)
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48 return -2;
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49
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50 addr.sin_family = host->h_addrtype;
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51 memcpy(&addr.sin_addr.s_addr, host->h_addr_list[0], host->h_length);
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52 addr.sin_port = htons(d->port);
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53
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54 r = connect(sock, (struct sockaddr*)&addr, sizeof(addr));
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55 if (r < 0)
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56 return -3;
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57
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58 d->fd = sock;
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59
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60 /* check compatibility */
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61 n = snprintf(buffer, sizeof(buffer), "REVISION");
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62 r = msend(d->fd, buffer, n);
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63 if (r < 0)
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64 return r;
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65 r = mrecv(d->fd, buffer, sizeof(buffer));
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66 if (r < 0)
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67 return r;
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68 if (atoi(buffer) != REVISION)
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69 return -EINVAL;
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70
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71 /* disable clock divider */
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72 n = snprintf(buffer, sizeof(buffer), "GET CFR2");
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73 r = msend(d->fd, buffer, n);
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74 if (r < 0)
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75 return r;
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76 r = mrecv(d->fd, buffer, sizeof(buffer));
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77 if (r < 0)
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78 return r;
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79 r = strtouint64(buffer, &value);
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80 if (r < 0)
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81 return r;
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82 value = value | (1ULL << 16);
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83 r = command(d->fd, "SET CFR2 0x%X", value);
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84 if (r < 0)
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85 return r;
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86
206
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87 return 0;
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88 }
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89
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90
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91 int ad9956_set_frequency(struct ad9956 *d, double f)
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92 {
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93 int r;
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94 uint64 value = ftw(d->clock, f);
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95
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96 r = command(d->fd, "SET PCR%d 0x%llX", d->profile, value);
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97 if (r < 0)
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98 return r;
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99
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100 d->frequency = freq(d->clock, value);
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101
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102 return 0;
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103 }
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104
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105
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106 int ad9956_get_frequency(struct ad9956 *d, double *f)
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107 {
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108 int r, n;
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109 uint64 value;
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110 char buffer[256];
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111
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112 n = snprintf(buffer, sizeof(buffer), "GET PCR%d", d->profile);
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113
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114 r = msend(d->fd, buffer, n);
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115 if (r < 0)
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116 return r;
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117
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118 r = mrecv(d->fd, buffer, sizeof(buffer));
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119 if (r < 0)
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120 return r;
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121
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122 r = strtouint64(buffer, &value);
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123 if (r < 0)
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124 return r;
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125
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126 d->frequency = freq(d->clock, value);
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127 if (f)
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128 *f = d->frequency;
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129
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130 return 0;
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131 }
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132
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133
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134 int ad9956_set_sweep_rate(struct ad9956 *d, double rate)
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135 {
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136 int64 value = (int64)ftw(d->clock, fabs(rate * 0.01));
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137 if (rate < 0.0)
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138 value = -value;
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139 return command(d->fd, "SWEEP SET DFTW %lld", value);
206
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140 }
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141
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142
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143 int ad9956_sweep_start(struct ad9956 *d)
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144 {
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145 return command(d->fd, "SWEEP START");
206
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146 }
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147
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148
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149 int ad9956_sweep_stop(struct ad9956 *d)
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150 {
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151 return command(d->fd, "SWEEP STOP");
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152 }