101 lines
4.3 KiB
C
101 lines
4.3 KiB
C
/**
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* ISS Tracker
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*
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* @author Thomas Cherryhomes
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* @email thom dot cherryhomes at gmail dot com
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* @license gpl v. 3, see LICENSE.md for details.
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*/
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#define CENTER_X 4
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#define CENTER_Y 4
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#include <apple2.h>
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#include <tgi.h>
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#include <stdint.h>
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#include <stdbool.h>
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#include <stdlib.h>
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#include <string.h>
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#include <conio.h>
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#include <time.h>
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#include <stdio.h>
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#include "satellite.h"
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#include "ip65.h"
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const unsigned char _satellite[8] = {
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0x20, /* ..X.|.... */
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0x50, /* .X.X|.... */
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0xA4, /* X.X.|.X.. */
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0x58, /* .X.X|X... */
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0x1A, /* ...X|X.X. */
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0x05, /* ....|.X.X */
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0x0A, /* ....|X.X. */
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0x04, /* ....|.X.. */
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};
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// TODO: These tables are broken, recalculate them!
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unsigned char xpos[360] =
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{ 0,0,1,2,3,3,4,5,6,7,7,8,9,10,10,11,12,13,14,14,15,16,17,17,18,19,20,21,21,22,23,24,24,25,26,27,28,28,29,30,31,31,32,33,34,35,35,36,37,38,38,39,40,41,42,42,43,44,45,45,46,47,48,49,49,50,51,52,52,53,54,55,56,56,57,58,59,59,60,61,62,63,63,64,65,66,66,67,68,69,70,70,71,72,73,73,74,75,76,77,77,78,79,80,80,81,82,83,84,84,85,86,87,87,88,89,90,91,91,92,93,94,94,95,96,97,98,98,99,100,101,101,102,103,104,105,105,106,107,108,108,109,110,111,112,112,113,114,115,115,116,117,118,119,119,120,121,122,122,123,124,125,126,126,127,128,129,129,130,131,132,133,133,134,135,136,136,137,138,139,140,140,141,142,143,143,144,145,146,147,147,148,149,150,150,151,152,153,154,154,155,156,157,157,158,159,160,161,161,162,163,164,164,165,166,167,168,168,169,170,171,171,172,173,174,175,175,176,177,178,178,179,180,181,182,182,183,184,185,185,186,187,188,189,189,190,191,192,192,193,194,195,196,196,197,198,199,199,200,201,202,203,203,204,205,206,206,207,208,209,210,210,211,212,213,213,214,215,216,217,217,218,219,220,220,221,222,223,224,224,225,226,227,227,228,229,230,231,231,232,233,234,234,235,236,237,238,238,239,240,241,241,242,243,244,245,245,246,247,248,248,249,250,251,252,252,253,254,255,255,0,1,2,3,3,4,5,6,6,7,8,9,10,10,11,12,13,13,14,15,16,17,17,18,19,20,20,21,22,23, };
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unsigned char ypos[360] =
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{ 0,0,0,1,1,2,2,3,3,4,4,4,5,5,6,6,7,7,8,8,8,9,9,10,10,11,11,12,12,12,13,13,14,14,15,15,16,16,16,17,17,18,18,19,19,20,20,20,21,21,22,22,23,23,24,24,24,25,25,26,26,27,27,28,28,28,29,29,30,30,31,31,32,32,32,33,33,34,34,35,35,36,36,36,37,37,38,38,39,39,40,40,40,41,41,42,42,43,43,44,44,44,45,45,46,46,47,47,48,48,48,49,49,50,50,51,51,52,52,52,53,53,54,54,55,55,56,56,56,57,57,58,58,59,59,60,60,60,61,61,62,62,63,63,64,64,64,65,65,66,66,67,67,68,68,68,69,69,70,70,71,71,72,72,72,73,73,74,74,75,75,76,76,76,77,77,78,78,79,79,80,80,80,81,81,82,82,83,83,84,84,84,85,85,86,86,87,87,88,88,88,89,89,90,90,91,91,92,92,92,93,93,94,94,95,95,96,96,96,97,97,98,98,99,99,100,100,100,101,101,102,102,103,103,104,104,104,105,105,106,106,107,107,108,108,108,109,109,110,110,111,111,112,112,112,113,113,114,114,115,115,116,116,116,117,117,118,118,119,119,120,120,120,121,121,122,122,123,123,124,124,124,125,125,126,126,127,127,128,128,128,129,129,130,130,131,131,132,132,132,133,133,134,134,135,135,136,136,136,137,137,138,138,139,139,140,140,140,141,141,142,142,143,143,144,144,144,145,145,146,146,147,147,148,148,148,149,149,150,150,151,151,152,152,152,153,153,154,154,155,155,156,156,156,157,157,158,158,159,159, };
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const char url[]="HTTP://api.open-notify.org/iss-now.json";
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const char fmt[]="{\"iss_position\": {\"latitude\": \"%s \"longitude\": \"%s \"timestamp\": %ld, \"message\": \"success\"}";
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char download[1024];
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int post_proc(char *s)
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{
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char *c = strchr(s,'"');
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*c = 0;
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return atoi(s);
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}
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bool satellite_fetch(int *lon, int *lat, char *lon_s, char *lat_s, unsigned long *ts)
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{
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char *bdy;
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memset(lon_s,0,16);
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memset(lat_s,0,16);
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if (!url_download(url,(uint8_t*)download,sizeof(download)))
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return false;
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bdy=strstr(download,"\r\n\r\n");
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if (!bdy)
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return false;
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bdy += 4;
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if (sscanf(bdy,fmt,lon_s,lat_s,ts)!=3)
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return false;
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*lon = post_proc(lon_s);
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*lat = post_proc(lat_s);
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return true;
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}
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void satellite(int lon, int lat)
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{
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unsigned char x = xpos[lon + 180] - CENTER_X;
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unsigned char y = ypos[lat + 180] - CENTER_Y;
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unsigned char i,j;
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int8_t b;
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for (i=0;i<8;i++)
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{
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b=_satellite[i];
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for (j=0;j<16;j+=2)
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{
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if (b < 0)
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tgi_setcolor(TGI_COLOR_WHITE2);
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else
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tgi_setcolor(TGI_COLOR_BLACK2);
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tgi_setpixel(x+j,y+i);
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tgi_setpixel(x+j+1,y+i);
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b <<= 1;
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}
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}
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}
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