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/*Z dane NMEA zpravy vypreparuje potrebne informace*/ |
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/*Autor: Zbynek*/ |
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#include "GPS_dekoduj.h" |
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#include <string.h> |
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NMEA_GPGGA GPGGA_informace; |
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/************************************************************************ |
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* Funkce: dekoduj_zpravu_GPS |
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* Ucel: Z RX0_buffer vytahne informace o soucasne poloze, je tam ulozena cela veta RMC |
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* Vstup: Zadny |
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* Vystup: Zadny |
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************************************************************************/ |
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void dekoduj_zpravu_GPS (uint8_t* NMEA_retezec, uint8_t NMEA_delka) |
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{ |
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uint8_t i = 0, j = 0, k = 0, l = 0; |
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uint8_t pocet_carek = 0; |
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for ( i = 0; i < NMEA_delka; i++) |
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{ |
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if (pocet_carek == 1) |
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{ |
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GPGGA_informace.UTC_time[l] = NMEA_retezec[i]; |
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l++; |
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} |
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if (pocet_carek == 2 || pocet_carek == 3) |
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{ |
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GPGGA_informace.Latitude[k] = NMEA_retezec[i]; |
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k++; |
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l = 0; |
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} |
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if (pocet_carek == 4 || pocet_carek == 5) |
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{ |
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GPGGA_informace.Longitude[j] = NMEA_retezec[i]; |
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j++; |
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} |
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if (pocet_carek == 6) |
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{ |
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GPGGA_informace.UTC_time[l-1] = 0; |
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GPGGA_informace.Latitude[k-1] = 0; |
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GPGGA_informace.Longitude[j-1] = 0; |
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GPGGA_informace.Status_GPS = NMEA_retezec[i-1]; |
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j = 0; |
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} |
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if (pocet_carek == 9) |
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{ |
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GPGGA_informace.Altitude[j] = NMEA_retezec[i]; |
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j++; |
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} |
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if (NMEA_retezec[i] == ',') |
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{ |
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pocet_carek++; |
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} |
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if (pocet_carek >9) |
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{ |
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GPGGA_informace.Altitude[j-1] = 0; // konec Stringu |
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break; // nema vyznam dal zapisovat, potrebne je ulozeno. |
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} |
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} |
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} |