| 0,0 → 1,116 |
|---|
| #include "gps.h" |
| |
| #include <math.h> |
| #include <stdlib.h> |
| #include <stdlibm.h> |
| //#include <string.h> |
| |
| #define LCD_RS PIN_B1 // rizeni registru LCD displeje |
| #define LCD_E PIN_B0 // enable LCD displeje |
| #define LCD_DATA_LSB PIN_B4 // pripojeni LSB bitu datoveho portu LCD displeje |
| #include "MYLCD.C" |
| |
| // NMEA |
| #define TIME 6 |
| #define TIME_LEN 10 |
| #define LATDEG 19 |
| #define LATMIN 21 |
| #define LONDEG 32 |
| #define LONMIN 34 |
| #define DEG_LEN 2 |
| #define MIN_LEN 7 |
| #define AZIMUTH 46 |
| |
| float lat,lon; |
| int16 az; |
| |
| inline void read_NMEA() |
| { |
| // auto char line[70]; |
| auto char item[16]; |
| char *ptr,*line; |
| auto int8 n; |
| auto char c; |
| |
| line=malloc(72); |
| if (line==NULL) {printf(lcd_putc,"Error"); sleep();}; |
| line[71]=0; |
| |
| while(fgetc(NMEA)!='$'); |
| for(n=0;n<71;n++) |
| { |
| c=fgetc(NMEA); |
| if(c=='*') |
| { |
| line[n]=0; |
| break; |
| }; |
| line[n]=c; |
| }; |
| |
| lcd_gotoxy(12,4); |
| printf(lcd_putc,"%c %06.0g ",line[17],strtod(&line[TIME],&ptr)); |
| |
| lcd_gotoxy(1,3); |
| strncpy(item,&line[LATDEG],DEG_LEN+MIN_LEN); item[DEG_LEN+MIN_LEN]=0; |
| printf(lcd_putc,"%s*",item); |
| strncpy(item,&line[LONDEG],DEG_LEN+MIN_LEN); item[DEG_LEN+MIN_LEN]=0; |
| printf(lcd_putc,"%s*",item); |
| lcd_gotoxy(1,4); |
| // strncpy(item,&line[AZIMUTH],6); item[6]=0; |
| // printf(lcd_putc,"%s*",item); |
| |
| lcd_gotoxy(1,2); |
| lat=strtod(&line[LATMIN],&ptr); |
| line[LATMIN]=0; |
| lat+=60*strtod(&line[LATDEG],&ptr); |
| lon=strtod(&line[LONMIN],&ptr); |
| line[LONMIN]=0; |
| lon+=60*strtod(&line[LONDEG],&ptr); |
| strtod(&line[AZIMUTH],&ptr); |
| az=strtoul(ptr+1,&ptr,10); |
| printf(lcd_putc,"%.3g*%.3g*%03Lu",lat,lon,az); |
| free(line); |
| } |
| |
| void main() |
| { |
| |
| setup_adc_ports(NO_ANALOGS); |
| setup_adc(ADC_OFF); |
| setup_spi(FALSE); |
| setup_timer_0(RTCC_INTERNAL|RTCC_DIV_1); |
| setup_timer_1(T1_DISABLED); |
| setup_timer_2(T2_DISABLED,0,1); |
| setup_comparator(NC_NC_NC_NC); |
| setup_vref(VREF_LOW|-2); |
| lcd_init(); |
| |
| // gets(line,NMEA); // Dummy read form the GPS |
| |
| |
| while(TRUE) |
| { |
| const float gc_lat=49*60+15.574,gc_lon=14*60+42.331; // Cisticka |
| |
| read_NMEA(); |
| |
| lon=(gc_lon-lon)*1214; |
| lat=(gc_lat-lat)*1854; |
| |
| lcd_gotoxy(1,4); |
| printf(lcd_putc,"%.0g* ",sqrt((lon*lon) + (lat*lat))); |
| lcd_gotoxy(1,1); |
| if (lat==0) lat=0.001; |
| lon=3-(6/PI*atan2(lat,lon)); |
| if (lon<0) lon+=12; |
| if (lon>12) lon-=12; |
| printf(lcd_putc,"BE%2.0g*",lon); |
| lat=12.0/360*az; |
| lon=lon-lat; |
| if (lon<0) lon+=12; |
| if (lon>12) lon-=12; |
| printf(lcd_putc,"HE%2.0g*AZ%2.0g* ",lon,lat); |
| } |
| |
| } |