Mercurial > hg > fxanalyse
annotate ad9912.c @ 207:9e0c3541104b
Move common AD99xx code to dds.{ch}
author | Daniele Nicolodi <daniele.nicolodi@obspm.fr> |
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date | Mon, 31 Mar 2014 17:03:38 +0200 |
parents | f8118b90490e |
children | 5296f3bcd160 |
rev | line source |
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196
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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 "ad9912.h" |
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22 |
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23 |
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24 int ad9912_init(struct ad9912 *d, const char *hostname, double clock) |
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25 { |
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26 int n, r; |
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27 char buffer[256]; |
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28 int sock; |
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29 struct sockaddr_in addr; |
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30 struct hostent* host; |
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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->clock = clock; |
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40 |
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41 host = gethostbyname(hostname); |
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42 if (host == NULL) |
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43 return -1; |
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44 |
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45 sock = socket(AF_INET, SOCK_STREAM, 0); |
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46 if (sock < 0) |
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47 return -2; |
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48 |
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49 addr.sin_family = host->h_addrtype; |
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50 memcpy(&addr.sin_addr.s_addr, host->h_addr_list[0], host->h_length); |
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51 addr.sin_port = htons(d->port); |
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52 |
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53 r = connect(sock, (struct sockaddr*)&addr, sizeof(addr)); |
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54 if (r < 0) |
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55 return -3; |
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56 |
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57 d->fd = sock; |
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58 |
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59 /* check compatibility */ |
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60 n = snprintf(buffer, sizeof(buffer), "REVISION"); |
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61 r = msend(d->fd, buffer, n); |
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62 if (r < 0) |
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63 return r; |
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64 r = mrecv(d->fd, buffer, sizeof(buffer)); |
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65 if (r < 0) |
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66 return r; |
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67 if (atoi(buffer) != REVISION) |
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68 return -1; |
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69 |
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70 return 0; |
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71 } |
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72 |
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73 |
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74 int ad9912_set_frequency(struct ad9912 *d, unsigned channel, double f) |
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75 { |
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76 int r; |
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77 uint64 value = ftw(d->clock, f); |
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78 |
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79 /* ad9912 ignores ftw last bit */ |
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80 value = value & ~1ULL; |
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81 |
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82 r = command(d->fd, "SET CH%d:FTW0 0x%llX", channel, value); |
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83 if (r < 0) |
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84 return r; |
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85 |
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86 d->frequency[channel] = freq(d->clock, value); |
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87 |
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88 return 0; |
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89 } |
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90 |
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91 |
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92 int ad9912_get_frequency(struct ad9912 *d, unsigned channel, double *f) |
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93 { |
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94 int r, n; |
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95 uint64 value; |
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96 char buffer[256]; |
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97 |
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98 n = snprintf(buffer, sizeof(buffer), "GET CH%d:FTW0", channel); |
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99 |
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100 r = msend(d->fd, buffer, n); |
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101 if (r < 0) |
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102 return r; |
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103 |
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104 r = mrecv(d->fd, buffer, sizeof(buffer)); |
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105 if (r < 0) |
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106 return r; |
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107 |
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108 r = strtouint64(buffer, &value); |
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109 if (r < 0) |
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110 return r; |
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111 |
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112 d->frequency[channel] = freq(d->clock, value); |
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113 if (f) |
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114 *f = d->frequency[channel]; |
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115 |
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116 return 0; |
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117 } |
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118 |
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119 |
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120 /** |
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121 * Ramp DDS frequency from @f1 to @f2 in steps @fstep with 0.01 |
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122 * seconds delay after each step. |
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123 */ |
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124 int ad9912_ramp_frequency2(struct ad9912 *d, unsigned channel, double f1, double f2, double fstep) |
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125 { |
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126 const int delay = 10000; |
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127 |
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128 /* f2 > f1 */ |
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129 while ((f2 - f1) > fstep) { |
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130 f1 += fstep; |
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131 ad9912_set_frequency(d, channel, f1); |
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132 usleep(delay); |
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133 } |
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134 |
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135 /* f2 < f1 */ |
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136 while ((f1 - f2) > fstep) { |
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137 f1 -= fstep; |
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138 ad9912_set_frequency(d, channel, f1); |
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139 usleep(delay); |
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140 } |
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141 |
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142 /* final adjustment */ |
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143 ad9912_set_frequency(d, channel, f2); |
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144 return 0; |
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145 } |
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146 |
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147 |
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148 int ad9912_ramp_frequency(struct ad9912 *d, unsigned channel, double f, double fstep) |
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149 { |
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150 return ad9912_ramp_frequency2(d, channel, d->frequency[channel], f, fstep); |
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151 } |