1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429
|
/* IBP - show which beacon of the International Beacon Project is active now
*
* Copyright (C) 2000,2003, Pieter-Tjerk de Boer -- pa3fwm@amsat.org
*
* Distributed on the conditions of the Gnu Public Licence, version 2.
*/
#define VERSION "0.21"
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <time.h>
#include <curses.h>
#include <unistd.h>
#include <sys/types.h>
#include <sys/time.h>
#include <math.h>
#include <ctype.h>
#ifndef noX11
#include "xdisp.h"
#endif
typedef struct {
char callsign[8];
char location[40];
int activeband[5];
double lat, lon;
double dist;
double az_shortpath, az_longpath;
} Beacon;
Beacon beacons[]={
{"4U1UN", "United Nations New York City", {1,1,1,1,1}, 40+ 45/60., -73- 58/60. },
{"VE8AT", "Canada Eureka, Nunavut", {1,1,1,1,1}, 79+ 59/60., -85- 57/60. },
{"W6WX", "United States Mt. Umunhum", {1,1,1,1,1}, 37+ 9/60., -121- 54/60. },
{"KH6WO", "Hawaii Laie", {1,0,1,0,1}, 21+ 38/60., -157- 55/60. },
{"ZL6B", "New Zealand Masterton", {1,1,1,1,1}, -41- 3/60., 175+ 36/60. },
{"VK6RBP", "Australia Rolystone", {1,1,1,1,1}, -32- 6/60., 116+ 3/60. },
{"JA2IGY", "Japan Mt. Asama", {1,1,1,1,1}, 34+ 27/60., 136+ 47/60. },
{"RR9O", "Russia Novosibirsk", {1,1,1,1,1}, 54+ 59/60., 82+ 54/60. },
{"VR2B", "Hong Kong Hong Kong", {1,1,1,1,1}, 22+ 16/60., 114+ 9/60. },
{"4S7B", "Sri Lanka Colombo", {1,1,1,1,1}, 6+ 54/60., 79+ 52/60. },
{"ZS6DN", "South Africa Pretoria", {1,1,1,1,1}, -25- 54/60., 28+ 16/60. },
{"5Z4B", "Kenya Kilifi", {1,1,1,1,1}, -1- 1/60., 37+ 3/60. },
{"4X6TU", "Israel Tel Aviv", {1,1,1,1,1}, 32+ 3/60., 34+ 46/60. },
{"OH2B", "Finland Espoo", {1,1,1,1,1}, 60+ 32/60., 24+ 6/60. },
{"CS3B", "Madeira Santo da Serra", {1,1,1,1,1}, 32+ 43/60., -16- 48/60. },
{"LU4AA", "Argentina Buenos Aires", {1,1,1,1,1}, -34- 37/60., -58- 21/60. },
{"OA4B", "Peru Lima", {1,1,1,1,1}, -12- 4/60., -76- 57/60. },
{"YV5B", "Venezuela Caracas", {1,1,1,1,1}, 10+ 25/60., -66- 51/60. },
};
char frequencies[][12]={
"14.100 MHz",
"18.110 MHz",
"21.150 MHz",
"24.930 MHz",
"28.200 MHz"
};
int multiband=0; /* flag for multiband display */
int colour=1; /* flag for colour display */
int band=0; /* number of selected band, 0...4 = 14 ... 28 MHz */
int morse=0; /* flag for showing the morse code of the callsign */
#ifndef noX11
int dox=1; /* flag for opening the X11 window */
int xfd; /* filedescriptor for X11 */
#endif
char mylocator[8]=""; /* listener's maidenhead locator given on command line */
double mylat, mylon; /* corresponding latitude and longitude */
int myloc_ok=0; /* flag; if zero, distance and azimuth are not displayed */
char *makemorse(char *s)
/* returns a static string containing the morse code representation of s */
{
static char result[80];
static char alphabet[][8]={
".- ", "-... ", "-.-. ", "-.. ", ". ", "..-. ", "-.. ", ".... ", ".. ", ".--- ",
"-.- ", ".-.. ", "-- ", "-. ", "--- ", ".--. ", "--.- ", ".-. ", "... ", "- ",
"..- ", "...- ", ".-- ", "-..- ", "-.-- ", "--.. " };
static char digits[][8]={
"-----", ".---- ", "..--- ", "...-- ", "....- ",
"..... ", "-.... ", "--... ", "---.. ", "----. " };
result[0]=0;
while (*s) {
if (isalpha(*s)) strcat(result, alphabet[toupper(*s)-'A']);
else if (isdigit(*s)) strcat(result, digits[*s-'0']);
s++;
}
return result;
}
void mainloop(void)
/* the main loop: display the beacons, time, etc., and process key presses */
{
int attrs[5];
int previ=-1;
time_t prevt=-1;
/* prepare for using the curses library and draw the static parts of the screen */
initscr();
cbreak(); noecho();
leaveok(stdscr,TRUE); curs_set(0); nonl();
if (has_colors()) {
start_color();
init_pair(COLOR_BLACK, COLOR_BLACK, COLOR_BLACK);
init_pair(COLOR_GREEN, COLOR_GREEN, COLOR_BLACK);
init_pair(COLOR_RED, COLOR_RED, COLOR_WHITE);
init_pair(COLOR_CYAN, COLOR_CYAN, COLOR_BLACK);
init_pair(COLOR_WHITE, COLOR_WHITE, COLOR_BLACK);
init_pair(COLOR_MAGENTA, COLOR_MAGENTA, COLOR_WHITE);
init_pair(COLOR_BLUE, COLOR_BLUE, COLOR_WHITE);
init_pair(COLOR_YELLOW, COLOR_YELLOW, COLOR_BLACK);
attrs[0]=A_REVERSE|COLOR_PAIR(COLOR_RED);
attrs[1]=A_REVERSE|COLOR_PAIR(COLOR_YELLOW);
attrs[2]=A_REVERSE|COLOR_PAIR(COLOR_GREEN);
attrs[3]=A_REVERSE|COLOR_PAIR(COLOR_CYAN);
attrs[4]=A_REVERSE|COLOR_PAIR(COLOR_BLUE);
} else {
int i;
for (i=0;i<5;i++) attrs[i]=A_REVERSE;
}
attron(A_REVERSE);
move(21,0);
if (multiband) addstr(" Keys: 1...5: select band m: toggle multi-band q: quit ");
else addstr(" Keys: 1..5: select band m: toggle multi-band c: toggle morse code q: quit ");
attroff(A_REVERSE);
for(;;) {
time_t t;
int i,j,mfd;
char s[100];
fd_set readfds;
struct timeval timeout;
int redraw=0;
FD_ZERO(&readfds);
FD_SET(0,&readfds);
mfd=1;
#ifndef noX11
FD_SET(xfd,&readfds);
mfd=xfd+1;
#endif
timeout.tv_sec=0;
timeout.tv_usec=10000;
i=select(mfd,&readfds,NULL,NULL,&timeout);
/* process key press, if any */
if (i>0) {
int c;
if (FD_ISSET(0,&readfds)) c=getchar();
#ifndef noX11
else c=x_getkeypress();
#endif
switch (c) {
case 'C': case 'c':
morse=!morse;
if (!multiband) redraw=1;
else if (morse) {
move(23,0);
addstr(" (no morse code display in multi-band mode)");
refresh();
}
break;
case 'M': case 'm':
multiband=!multiband;
redraw=1;
break;
case 'Q': case 'q':
endwin();
return;
case '1':
case '2':
case '3':
case '4':
case '5':
band=c-'1';
multiband=0;
redraw=1;
break;
}
}
time(&t);
if (t!=prevt || redraw) {
int sec;
struct tm *tp;
/* draw the screen's top line, containing the time etc. */
prevt=t;
tp=gmtime(&t);
sec = 60*(tp->tm_min%3) + tp->tm_sec;
sprintf(s," %02i:%02i:%02iz %-10s %6s IBP v" VERSION " \n",
tp->tm_hour, tp->tm_min, tp->tm_sec,
(!multiband)?frequencies[band]:"",
mylocator);
attron(A_REVERSE); move(0,0); addstr(s); attroff(A_REVERSE);
/* calculate the phase within the 3 minute cycle */
i = (sec/10) % 18;
if (i!=previ) redraw=1;
else refresh();
previ=i;
}
if (redraw) {
/* write the beacon list, with active beacon(s) marked */
int act[5];
for (j=0;j<5;j++) act[j]=-1;
for (j=0;j<18;j++) {
int b,active;
char *sp;
move(j+2,0);
b = (i-j+18)%18;
active = b<5 && beacons[j].activeband[b] && (multiband || b==band);
if (active) {
if (colour) attrset(attrs[b]);
else attrset(A_REVERSE);
act[b]=j;
}
sp=s+sprintf(s," %10s %-6s %-33s",
active ? frequencies[b] : "",
beacons[j].callsign, beacons[j].location
);
if (myloc_ok)
sprintf(sp," %5ikm %3i/%3ideg \n",
(int)(0.5+beacons[j].dist),
(int)(0.5+beacons[j].az_shortpath),
(int)(0.5+beacons[j].az_longpath)
);
else strcpy(sp," \n");
addstr(s);
attrset(A_NORMAL);
}
/* write the bottom line with the morse code, if enabled: */
j=(i-band+18)%18;
if (morse && !multiband && beacons[j].activeband[band])
sprintf(s," %-70s ", makemorse(beacons[j].callsign));
else
strcpy(s," ");
move(23,0);
addstr(s);
refresh();
#ifndef noX11
if (dox) x_update(act);
#endif
}
}
}
int is_locator(char *s)
/* returns 1 if and only if s looks like a Maidenhead locator */
{
if (strlen(s) == 6) {
if (!isalpha(s[0])) return 0;
if (!isalpha(s[1])) return 0;
if (!isdigit(s[2])) return 0;
if (!isdigit(s[3])) return 0;
if (!isalpha(s[4])) return 0;
if (!isalpha(s[5])) return 0;
if (isgraph(s[6])) return 0;
}
else if (strlen(s) == 4) {
if (!isalpha(s[0])) return 0;
if (!isalpha(s[1])) return 0;
if (!isdigit(s[2])) return 0;
if (!isdigit(s[3])) return 0;
if (isgraph(s[4])) return 0;
}
return 1;
}
void calc_dist_and_az(void)
/* calculate distance and azimuth for all beacons w.r.t. the location given by mylocator[] */
/* results are stored in the beacons[] array */
{
int i;
mylon= -180 + (toupper(mylocator[0])-'A')*20
+ (mylocator[2]-'0')*2
+ (toupper(mylocator[4])-'A')/12. + 1/24. ;
mylat= -90 + (toupper(mylocator[1])-'A')*10
+ (mylocator[3]-'0')*1
+ (toupper(mylocator[5])-'A')/24. + 1/48. ;
mylon *= M_PI/180;
mylat *= M_PI/180;
for (i=0;i<18;i++) {
double blon,blat;
double tmp,arc;
blon = beacons[i].lon * M_PI/180;
blat = beacons[i].lat * M_PI/180;
tmp = sin(mylat)*sin(blat) + cos(mylat)*cos(blat)*cos(blon-mylon);
arc = acos(tmp);
beacons[i].dist = arc*180/M_PI*111.2;
tmp = (sin(blat)-sin(mylat)*tmp)/(sin(arc)*cos(mylat));
beacons[i].az_shortpath = acos(tmp)*180/M_PI;
beacons[i].az_longpath = beacons[i].az_shortpath+180;
if (sin(blon-mylon)<0) {
beacons[i].az_shortpath = 360 - beacons[i].az_shortpath;
beacons[i].az_longpath = beacons[i].az_shortpath-180;
}
}
}
int main(int argc,char **argv)
{
int err;
myloc_ok=0;
band=-1;
multiband=0;
err=0;
/* parse the command-line options */
while (argc>1 && !err) {
int i;
argc--;
if (argv[argc][0]=='-') {
switch (argv[argc][1]) {
case 'c': colour=0; break;
case 'm': morse=1; break;
#ifndef noX11
case 'x': dox=0; break;
#endif
case '-':
if (!strcmp(argv[argc],"--nocolour")) colour=0;
else if (!strcmp(argv[argc],"--morse")) morse=1;
#ifndef noX11
else if (!strcmp(argv[argc],"--nograph")) dox=0;
#endif
else err=1;
break;
default:
err=1;
}
} else {
i=atoi(argv[argc]);
if (i>0) {
if (band>=0) err=1;
switch (i) {
case 14: case 20: band=0; break;
case 18: case 17: band=1; break;
case 21: case 15: band=2; break;
case 24: case 12: band=3; break;
case 28: case 10: band=4; break;
default: err=1;
}
} else if (is_locator(argv[argc])) {
if (myloc_ok) err=1;
else {
if (strlen(argv[argc])==6) {
strncpy(mylocator,argv[argc],6);
mylocator[6]=0;
myloc_ok=1;
}
if (strlen(argv[argc])==4) {
strncpy(mylocator,argv[argc],4);
mylocator[4]='a';
mylocator[5]='a';
mylocator[6]=0;
myloc_ok=1;
}
}
} else {
err=1;
}
}
}
if (band<0) { band=0; multiband=1; }
if (err) {
printf("Usage: %s [arguments]\n"
"shows which of the International Beacon Project beacons is now transmitting.\n"
"\n"
"The following arguments can be used:\n"
"-c or --nocolour: don't use colour, even on a colour terminal.\n"
"-m or --morse: display callsign of active beacon in morse code (not in\n"
" multi-band mode).\n"
"-x or --nograph: don't open the X11 graphic window, even if DISPLAY is set.\n"
"a band expressed either in MHz (14, 18, 21, 24 or 28) or in meters (20, 17, 15,\n"
" 12 or 10); if no band is specified, the program starts in multi-band mode.\n"
"a Maidenhead locator (like JO32KF), to be used for the calculation of distance\n"
" and azimuth (both short and long path) to each beacon.\n"
"\n"
"Note: since each beacon transmission lasts only 10 seconds, your computer's\n"
"clock should be set reasonably accurately for the results to be valid.\n"
"\n"
"More information about the International Beacon Project can be found at\n"
"http://www.ncdxf.org/beacon.htm\n",
argv[0]);
return 1;
}
if (myloc_ok) calc_dist_and_az();
#ifndef noX11
if (!getenv("DISPLAY")) dox=0;
if (dox) {
double lat[18],lon[18];
int i;
xfd = x_init();
for (i=0;i<18;i++) {
lat[i]=beacons[i].lat;
lon[i]=beacons[i].lon;
}
x_storeBeacons(myloc_ok,mylat*180/M_PI,mylon*180/M_PI,lat,lon);
}
#endif
mainloop();
return 0;
}
|