1 | /* |
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2 | INDI LIB |
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3 | Common routines used by all drivers |
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4 | Copyright (C) 2003 by Jason Harris (jharris@30doradus.org) |
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5 | Elwood C. Downey |
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6 | |
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7 | This is the C version of the astronomical library in KStars |
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8 | modified by Jasem Mutlaq (mutlaqja@ikarustech.com) |
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9 | |
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10 | This library is free software; you can redistribute it and/or |
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11 | modify it under the terms of the GNU Lesser General Public |
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12 | License as published by the Free Software Foundation; either |
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13 | version 2.1 of the License, or (at your option) any later version. |
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14 | |
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15 | This library is distributed in the hope that it will be useful, |
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16 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
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17 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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18 | Lesser General Public License for more details. |
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19 | |
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20 | You should have received a copy of the GNU Lesser General Public |
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21 | License along with this library; if not, write to the Free Software |
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22 | Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
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23 | |
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24 | */ |
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25 | |
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26 | /* needed for sincos() in math.h */ |
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27 | #ifndef _GNU_SOURCE |
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28 | #define _GNU_SOURCE |
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29 | #endif |
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30 | #ifdef _WIN32 |
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31 | #define CX _CX |
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32 | #define CY _CY |
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33 | #endif |
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34 | #include <stdlib.h> |
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35 | #include <math.h> |
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36 | #include <stdio.h> |
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37 | #include <string.h> |
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38 | #include <unistd.h> |
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39 | #include <fcntl.h> |
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40 | #include <errno.h> |
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41 | #include <stdarg.h> |
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42 | |
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43 | #include <config.h> |
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44 | |
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45 | #ifdef HAVE_NOVA_H |
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46 | #include <libnova.h> |
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47 | #endif |
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48 | |
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49 | |
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50 | #include "indicom.h" |
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51 | #ifdef _WIN32 |
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52 | #undef CX |
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53 | #undef CY |
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54 | #endif |
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55 | const char * Direction[] = { "North", "West", "East", "South", "All"}; |
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56 | const char * SolarSystem[] = { "Mercury", "Venus", "Moon", "Mars", "Jupiter", "Saturn", "Uranus", "Neptune", "Pluto"}; |
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57 | |
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58 | /* make it compile on solaris */ |
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59 | #ifndef M_PI |
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60 | #define M_PI 3.14159265358979323846264338327950288419716939937510582097494459 |
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61 | #endif |
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62 | |
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63 | #ifndef _WIN32 |
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64 | #include <termios.h> |
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65 | #define PARITY_NONE 0 |
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66 | #define PARITY_EVEN 1 |
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67 | #define PARITY_ODD 2 |
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68 | #endif |
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69 | |
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70 | void getSexComponents(double value, int *d, int *m, int *s); |
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71 | |
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72 | |
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73 | int extractISOTime(char *timestr, struct ln_date *iso_date) |
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74 | { |
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75 | #ifdef HAVE_NOVA_H |
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76 | struct tm utm; |
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77 | |
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78 | if (strptime(timestr, "%Y/%m/%dT%H:%M:%S", &utm)) |
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79 | { |
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80 | ln_get_date_from_tm(&utm, iso_date); |
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81 | return (0); |
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82 | } |
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83 | |
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84 | if (strptime(timestr, "%Y-%m-%dT%H:%M:%S", &utm)) |
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85 | { |
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86 | ln_get_date_from_tm(&utm, iso_date); |
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87 | return (0); |
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88 | } |
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89 | #endif |
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90 | |
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91 | return (-1); |
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92 | } |
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93 | |
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94 | |
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95 | /* sprint the variable a in sexagesimal format into out[]. |
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96 | * w is the number of spaces for the whole part. |
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97 | * fracbase is the number of pieces a whole is to broken into; valid options: |
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98 | * 360000: <w>:mm:ss.ss |
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99 | * 36000: <w>:mm:ss.s |
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100 | * 3600: <w>:mm:ss |
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101 | * 600: <w>:mm.m |
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102 | * 60: <w>:mm |
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103 | * return number of characters written to out, not counting finaif (NOVA_FOUND) |
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104 | include_directories(${NOVA_INCLUDE_DIR}) |
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105 | endif (NOVA_FOUND)l '\0'. |
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106 | */ |
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107 | int |
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108 | fs_sexa (char *out, double a, int w, int fracbase) |
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109 | { |
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110 | char *out0 = out; |
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111 | unsigned long n; |
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112 | int d; |
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113 | int f; |
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114 | int m; |
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115 | int s; |
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116 | int isneg; |
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117 | |
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118 | /* save whether it's negative but do all the rest with a positive */ |
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119 | isneg = (a < 0); |
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120 | if (isneg) |
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121 | a = -a; |
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122 | |
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123 | /* convert to an integral number of whole portions */ |
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124 | n = (unsigned long)(a * fracbase + 0.5); |
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125 | d = n/fracbase; |
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126 | f = n%fracbase; |
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127 | |
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128 | /* form the whole part; "negative 0" is a special case */ |
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129 | if (isneg && d == 0) |
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130 | out += sprintf (out, "%*s-0", w-2, ""); |
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131 | else |
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132 | out += sprintf (out, "%*d", w, isneg ? -d : d); |
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133 | |
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134 | /* do the rest */ |
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135 | switch (fracbase) { |
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136 | case 60: /* dd:mm */ |
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137 | m = f/(fracbase/60); |
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138 | out += sprintf (out, ":%02d", m); |
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139 | break; |
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140 | case 600: /* dd:mm.m */ |
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141 | out += sprintf (out, ":%02d.%1d", f/10, f%10); |
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142 | break; |
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143 | case 3600: /* dd:mm:ss */ |
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144 | m = f/(fracbase/60); |
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145 | s = f%(fracbase/60); |
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146 | out += sprintf (out, ":%02d:%02d", m, s); |
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147 | break; |
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148 | case 36000: /* dd:mm:ss.s*/ |
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149 | m = f/(fracbase/60); |
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150 | s = f%(fracbase/60); |
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151 | out += sprintf (out, ":%02d:%02d.%1d", m, s/10, s%10); |
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152 | break; |
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153 | case 360000: /* dd:mm:ss.ss */ |
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154 | m = f/(fracbase/60); |
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155 | s = f%(fracbase/60); |
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156 | out += sprintf (out, ":%02d:%02d.%02d", m, s/100, s%100); |
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157 | break; |
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158 | default: |
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159 | printf ("fs_sexa: unknown fracbase: %d\n", fracbase); |
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160 | exit(1); |
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161 | } |
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162 | |
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163 | return (out - out0); |
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164 | } |
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165 | |
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166 | /* convert sexagesimal string str AxBxC to double. |
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167 | * x can be anything non-numeric. Any missing A, B or C will be assumed 0. |
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168 | * optional - and + can be anywhere. |
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169 | * return 0 if ok, -1 if can't find a thing. |
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170 | */ |
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171 | int |
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172 | f_scansexa ( |
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173 | const char *str0, /* input string */ |
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174 | double *dp) /* cracked value, if return 0 */ |
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175 | { |
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176 | double a = 0, b = 0, c = 0; |
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177 | char str[128]; |
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178 | char *neg; |
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179 | int r; |
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180 | |
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181 | /* copy str0 so we can play with it */ |
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182 | strncpy (str, str0, sizeof(str)-1); |
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183 | str[sizeof(str)-1] = '\0'; |
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184 | |
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185 | neg = strchr(str, '-'); |
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186 | if (neg) |
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187 | *neg = ' '; |
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188 | r = sscanf (str, "%lf%*[^0-9]%lf%*[^0-9]%lf", &a, &b, &c); |
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189 | if (r < 1) |
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190 | return (-1); |
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191 | *dp = a + b/60 + c/3600; |
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192 | if (neg) |
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193 | *dp *= -1; |
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194 | return (0); |
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195 | } |
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196 | |
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197 | void getSexComponents(double value, int *d, int *m, int *s) |
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198 | { |
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199 | |
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200 | *d = (int) fabs(value); |
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201 | *m = (int) ((fabs(value) - *d) * 60.0); |
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202 | *s = (int) rint(((fabs(value) - *d) * 60.0 - *m) *60.0); |
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203 | |
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204 | if (value < 0) |
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205 | *d *= -1; |
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206 | } |
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207 | |
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208 | /* fill buf with properly formatted INumber string. return length */ |
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209 | int |
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210 | numberFormat (char *buf, const char *format, double value) |
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211 | { |
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212 | int w, f, s; |
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213 | char m; |
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214 | |
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215 | if (sscanf (format, "%%%d.%d%c", &w, &f, &m) == 3 && m == 'm') { |
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216 | /* INDI sexi format */ |
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217 | switch (f) { |
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218 | case 9: s = 360000; break; |
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219 | case 8: s = 36000; break; |
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220 | case 6: s = 3600; break; |
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221 | case 5: s = 600; break; |
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222 | default: s = 60; break; |
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223 | } |
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224 | return (fs_sexa (buf, value, w-f, s)); |
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225 | } else { |
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226 | /* normal printf format */ |
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227 | return (sprintf (buf, format, value)); |
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228 | } |
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229 | } |
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230 | |
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231 | /* log message locally. |
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232 | * this has nothing to do with XML or any Clients. |
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233 | */ |
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234 | void |
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235 | IDLog (const char *fmt, ...) |
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236 | { |
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237 | va_list ap; |
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238 | /* JM: Since all INDI's stderr are timestampped now, we don't need to time stamp ID Log */ |
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239 | /*fprintf (stderr, "%s ", timestamp());*/ |
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240 | va_start (ap, fmt); |
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241 | vfprintf (stderr, fmt, ap); |
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242 | va_end (ap); |
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243 | } |
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244 | |
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245 | /* return current system time in message format */ |
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246 | const char * |
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247 | timestamp() |
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248 | { |
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249 | static char ts[32]; |
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250 | struct tm *tp; |
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251 | time_t t; |
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252 | |
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253 | time (&t); |
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254 | tp = gmtime (&t); |
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255 | strftime (ts, sizeof(ts), "%Y-%m-%dT%H:%M:%S", tp); |
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256 | return (ts); |
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257 | } |
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258 | |
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259 | int tty_timeout(int fd, int timeout) |
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260 | { |
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261 | struct timeval tv; |
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262 | fd_set readout; |
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263 | int retval; |
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264 | |
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265 | FD_ZERO(&readout); |
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266 | FD_SET(fd, &readout); |
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267 | |
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268 | /* wait for 'timeout' seconds */ |
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269 | tv.tv_sec = timeout; |
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270 | tv.tv_usec = 0; |
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271 | |
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272 | /* Wait till we have a change in the fd status */ |
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273 | retval = select (fd+1, &readout, NULL, NULL, &tv); |
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274 | |
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275 | /* Return 0 on successful fd change */ |
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276 | if (retval > 0) |
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277 | return TTY_OK; |
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278 | /* Return -1 due to an error */ |
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279 | else if (retval == -1) |
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280 | return TTY_SELECT_ERROR; |
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281 | /* Return -2 if time expires before anything interesting happens */ |
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282 | else |
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283 | return TTY_TIME_OUT; |
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284 | |
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285 | } |
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286 | |
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287 | int tty_write(int fd, const char * buf, int nbytes, int *nbytes_written) |
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288 | { |
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289 | int bytes_w = 0; |
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290 | *nbytes_written = 0; |
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291 | |
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292 | while (nbytes > 0) |
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293 | { |
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294 | |
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295 | bytes_w = write(fd, buf, nbytes); |
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296 | |
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297 | if (bytes_w < 0) |
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298 | return TTY_WRITE_ERROR; |
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299 | |
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300 | *nbytes_written += bytes_w; |
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301 | buf += bytes_w; |
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302 | nbytes -= bytes_w; |
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303 | } |
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304 | |
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305 | return TTY_OK; |
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306 | } |
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307 | |
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308 | int tty_write_string(int fd, const char * buf, int *nbytes_written) |
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309 | { |
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310 | unsigned int nbytes; |
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311 | int bytes_w = 0; |
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312 | *nbytes_written = 0; |
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313 | |
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314 | nbytes = strlen(buf); |
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315 | |
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316 | while (nbytes > 0) |
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317 | { |
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318 | |
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319 | bytes_w = write(fd, buf, nbytes); |
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320 | |
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321 | if (bytes_w < 0) |
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322 | return TTY_WRITE_ERROR; |
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323 | |
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324 | *nbytes_written += bytes_w; |
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325 | buf += bytes_w; |
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326 | nbytes -= bytes_w; |
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327 | } |
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328 | |
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329 | return TTY_OK; |
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330 | } |
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331 | |
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332 | int tty_read(int fd, char *buf, int nbytes, int timeout, int *nbytes_read) |
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333 | { |
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334 | |
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335 | int bytesRead = 0; |
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336 | int err = 0; |
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337 | *nbytes_read =0; |
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338 | |
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339 | if (nbytes <=0) |
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340 | return TTY_PARAM_ERROR; |
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341 | |
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342 | while (nbytes > 0) |
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343 | { |
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344 | if ( (err = tty_timeout(fd, timeout)) ) |
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345 | return err; |
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346 | |
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347 | bytesRead = read(fd, buf, ((unsigned) nbytes)); |
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348 | |
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349 | if (bytesRead < 0 ) |
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350 | return TTY_READ_ERROR; |
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351 | |
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352 | buf += bytesRead; |
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353 | *nbytes_read += bytesRead; |
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354 | nbytes -= bytesRead; |
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355 | } |
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356 | |
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357 | return TTY_OK; |
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358 | } |
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359 | |
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360 | int tty_read_section(int fd, char *buf, char stop_char, int timeout, int *nbytes_read) |
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361 | { |
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362 | |
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363 | int bytesRead = 0; |
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364 | int err = TTY_OK; |
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365 | *nbytes_read = 0; |
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366 | |
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367 | for (;;) |
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368 | { |
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369 | if ( (err = tty_timeout(fd, timeout)) ) |
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370 | return err; |
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371 | |
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372 | bytesRead = read(fd, buf, 1); |
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373 | |
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374 | if (bytesRead < 0 ) |
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375 | return TTY_READ_ERROR; |
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376 | |
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377 | if (bytesRead) |
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378 | (*nbytes_read)++; |
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379 | |
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380 | if (*buf == stop_char) |
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381 | return TTY_OK; |
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382 | |
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383 | buf += bytesRead; |
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384 | } |
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385 | |
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386 | return TTY_TIME_OUT; |
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387 | } |
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388 | |
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389 | int tty_connect(const char *device, int bit_rate, int word_size, int parity, int stop_bits, int *fd) |
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390 | { |
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391 | #ifdef _WIN32 |
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392 | return TTY_PORT_FAILURE; |
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393 | |
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394 | #else |
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395 | int t_fd=0; |
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396 | char msg[80]; |
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397 | int bps; |
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398 | struct termios tty_setting; |
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399 | |
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400 | if ( (t_fd = open(device, O_RDWR | O_NOCTTY )) == -1) |
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401 | return TTY_PORT_FAILURE; |
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402 | |
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403 | /* Control Modes |
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404 | Set bps rate */ |
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405 | switch (bit_rate) { |
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406 | case 0: |
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407 | bps = B0; |
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408 | break; |
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409 | case 50: |
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410 | bps = B50; |
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411 | break; |
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412 | case 75: |
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413 | bps = B75; |
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414 | break; |
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415 | case 110: |
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416 | bps = B110; |
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417 | break; |
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418 | case 134: |
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419 | bps = B134; |
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420 | break; |
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421 | case 150: |
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422 | bps = B150; |
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423 | break; |
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424 | case 200: |
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425 | bps = B200; |
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426 | break; |
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427 | case 300: |
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428 | bps = B300; |
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429 | break; |
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430 | case 600: |
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431 | bps = B600; |
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432 | break; |
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433 | case 1200: |
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434 | bps = B1200; |
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435 | break; |
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436 | case 1800: |
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437 | bps = B1800; |
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438 | break; |
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439 | case 2400: |
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440 | bps = B2400; |
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441 | break; |
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442 | case 4800: |
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443 | bps = B4800; |
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444 | break; |
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445 | case 9600: |
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446 | bps = B9600; |
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447 | break; |
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448 | case 19200: |
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449 | bps = B19200; |
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450 | break; |
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451 | case 38400: |
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452 | bps = B38400; |
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453 | break; |
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454 | case 57600: |
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455 | bps = B57600; |
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456 | break; |
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457 | case 115200: |
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458 | bps = B115200; |
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459 | break; |
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460 | case 230400: |
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461 | bps = B230400; |
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462 | break; |
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463 | default: |
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464 | if (snprintf(msg, sizeof(msg), "tty_connect: %d is not a valid bit rate.", bit_rate) < 0) |
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465 | perror(NULL); |
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466 | else |
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467 | perror(msg); |
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468 | return TTY_PARAM_ERROR; |
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469 | } |
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470 | if ((cfsetispeed(&tty_setting, bps) < 0) || |
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471 | (cfsetospeed(&tty_setting, bps) < 0)) |
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472 | { |
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473 | perror("tty_connect: failed setting bit rate."); |
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474 | return TTY_PORT_FAILURE; |
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475 | } |
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476 | |
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477 | /* Control Modes |
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478 | set no flow control word size, parity and stop bits. |
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479 | Also don't hangup automatically and ignore modem status. |
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480 | Finally enable receiving characters. */ |
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481 | tty_setting.c_cflag &= ~(CSIZE | CSTOPB | PARENB | PARODD | HUPCL | CRTSCTS); |
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482 | tty_setting.c_cflag |= (CLOCAL | CREAD); |
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483 | |
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484 | /* word size */ |
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485 | switch (word_size) { |
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486 | case 5: |
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487 | tty_setting.c_cflag |= CS5; |
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488 | break; |
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489 | case 6: |
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490 | tty_setting.c_cflag |= CS6; |
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491 | break; |
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492 | case 7: |
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493 | tty_setting.c_cflag |= CS7; |
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494 | break; |
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495 | case 8: |
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496 | tty_setting.c_cflag |= CS8; |
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497 | break; |
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498 | default: |
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499 | |
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500 | fprintf( stderr, "Default\n") ; |
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501 | if (snprintf(msg, sizeof(msg), "tty_connect: %d is not a valid data bit count.", word_size) < 0) |
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502 | perror(NULL); |
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503 | else |
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504 | perror(msg); |
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505 | |
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506 | return TTY_PARAM_ERROR; |
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507 | } |
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508 | |
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509 | /* parity */ |
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510 | switch (parity) { |
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511 | case PARITY_NONE: |
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512 | break; |
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513 | case PARITY_EVEN: |
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514 | tty_setting.c_cflag |= PARENB; |
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515 | break; |
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516 | case PARITY_ODD: |
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517 | tty_setting.c_cflag |= PARENB | PARODD; |
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518 | break; |
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519 | default: |
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520 | |
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521 | fprintf( stderr, "Default1\n") ; |
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522 | if (snprintf(msg, sizeof(msg), "tty_connect: %d is not a valid parity selection value.", parity) < 0) |
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523 | perror(NULL); |
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524 | else |
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525 | perror(msg); |
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526 | |
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527 | return TTY_PARAM_ERROR; |
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528 | } |
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529 | |
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530 | /* stop_bits */ |
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531 | switch (stop_bits) { |
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532 | case 1: |
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533 | break; |
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534 | case 2: |
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535 | tty_setting.c_cflag |= CSTOPB; |
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536 | break; |
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537 | default: |
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538 | fprintf( stderr, "Default2\n") ; |
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539 | if (snprintf(msg, sizeof(msg), "tty_connect: %d is not a valid stop bit count.", stop_bits) < 0) |
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540 | perror(NULL); |
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541 | else |
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542 | perror(msg); |
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543 | |
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544 | return TTY_PARAM_ERROR; |
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545 | } |
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546 | /* Control Modes complete */ |
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547 | |
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548 | /* Ignore bytes with parity errors and make terminal raw and dumb.*/ |
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549 | tty_setting.c_iflag &= ~(PARMRK | ISTRIP | IGNCR | ICRNL | INLCR | IXOFF | IXON | IXANY); |
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550 | tty_setting.c_iflag |= INPCK | IGNPAR | IGNBRK; |
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551 | |
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552 | /* Raw output.*/ |
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553 | tty_setting.c_oflag &= ~(OPOST | ONLCR); |
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554 | |
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555 | /* Local Modes |
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556 | Don't echo characters. Don't generate signals. |
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557 | Don't process any characters.*/ |
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558 | tty_setting.c_lflag &= ~(ICANON | ECHO | ECHOE | ISIG | IEXTEN | NOFLSH | TOSTOP); |
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559 | tty_setting.c_lflag |= NOFLSH; |
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560 | |
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561 | /* blocking read until 1 char arrives */ |
---|
562 | tty_setting.c_cc[VMIN] = 1; |
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563 | tty_setting.c_cc[VTIME] = 0; |
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564 | |
---|
565 | /* now clear input and output buffers and activate the new terminal settings */ |
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566 | tcflush(t_fd, TCIOFLUSH); |
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567 | if (tcsetattr(t_fd, TCSANOW, &tty_setting)) |
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568 | { |
---|
569 | perror("tty_connect: failed setting attributes on serial port."); |
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570 | tty_disconnect(t_fd); |
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571 | return TTY_PORT_FAILURE; |
---|
572 | } |
---|
573 | |
---|
574 | *fd = t_fd; |
---|
575 | /* return success */ |
---|
576 | return TTY_OK; |
---|
577 | #endif |
---|
578 | } |
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579 | |
---|
580 | int tty_disconnect(int fd) |
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581 | { |
---|
582 | #ifdef _WIN32 |
---|
583 | return TTY_ERRNO; |
---|
584 | #else |
---|
585 | int err; |
---|
586 | tcflush(fd, TCIOFLUSH); |
---|
587 | err = close(fd); |
---|
588 | |
---|
589 | if (err != 0) |
---|
590 | return TTY_ERRNO; |
---|
591 | |
---|
592 | return TTY_OK; |
---|
593 | #endif |
---|
594 | } |
---|
595 | |
---|
596 | void tty_error_msg(int err_code, char *err_msg, int err_msg_len) |
---|
597 | { |
---|
598 | char error_string[512]; |
---|
599 | |
---|
600 | switch (err_code) |
---|
601 | { |
---|
602 | case TTY_OK: |
---|
603 | strncpy(err_msg, "No Error", err_msg_len); |
---|
604 | break; |
---|
605 | |
---|
606 | case TTY_READ_ERROR: |
---|
607 | snprintf(error_string, 512, "Read Error: %s", strerror(errno)); |
---|
608 | strncpy(err_msg, error_string, err_msg_len); |
---|
609 | break; |
---|
610 | |
---|
611 | case TTY_WRITE_ERROR: |
---|
612 | snprintf(error_string, 512, "Write Error: %s", strerror(errno)); |
---|
613 | strncpy(err_msg, error_string, err_msg_len); |
---|
614 | break; |
---|
615 | |
---|
616 | case TTY_SELECT_ERROR: |
---|
617 | snprintf(error_string, 512, "Select Error: %s", strerror(errno)); |
---|
618 | strncpy(err_msg, error_string, err_msg_len); |
---|
619 | break; |
---|
620 | |
---|
621 | case TTY_TIME_OUT: |
---|
622 | strncpy(err_msg, "Timeout error", err_msg_len); |
---|
623 | break; |
---|
624 | |
---|
625 | case TTY_PORT_FAILURE: |
---|
626 | snprintf(error_string, 512, "Port failure Error: %s", strerror(errno)); |
---|
627 | strncpy(err_msg, error_string, err_msg_len); |
---|
628 | break; |
---|
629 | |
---|
630 | case TTY_PARAM_ERROR: |
---|
631 | strncpy(err_msg, "Parameter error", err_msg_len); |
---|
632 | break; |
---|
633 | |
---|
634 | case TTY_ERRNO: |
---|
635 | snprintf(error_string, 512, "%s", strerror(errno)); |
---|
636 | strncpy(err_msg, error_string, err_msg_len); |
---|
637 | break; |
---|
638 | |
---|
639 | default: |
---|
640 | strncpy(err_msg, "Error: unrecognized error code", err_msg_len); |
---|
641 | break; |
---|
642 | |
---|
643 | |
---|
644 | } |
---|
645 | } |
---|