ua1zbe
/
LoRa_APRS_Tracker111
mirror of https://github.com/richonguzman/LoRa_APRS_Tracker.git
1
0
Fork 0
Code Issues Packages Projects Releases Wiki Activity
LoRa_APRS_Tracker111/lib/APRSPacketLib/APRSPacketLib.cpp

699 lines
24 KiB
C++
Raw Blame History

#include "APRSPacketLib.h"
namespace APRSPacketLib {
String doubleToString(double n, int ndec) {
String r = "";
if (n>-1 && n<0) {
r = "-";
}
int v = n;
r += v;
r += '.';
for (int i=0;i<ndec;i++) {
n -= v;
n = 10 * abs(n);
v = n;
r += v;
}
return r;
}
String gpsDecimalToDegreesLatitude(double lat) {
String degrees = doubleToString(lat,6);
String north_south, latitude, convDeg3;
float convDeg, convDeg2;
if (abs(degrees.toFloat()) < 10) {
latitude += "0";
}
if (degrees.indexOf("-") == 0) {
north_south = "S";
latitude += degrees.substring(1,degrees.indexOf("."));
} else {
north_south = "N";
latitude += degrees.substring(0,degrees.indexOf("."));
}
convDeg = abs(degrees.toFloat()) - abs(int(degrees.toFloat()));
convDeg2 = (convDeg * 60)/100;
convDeg3 = String(convDeg2,6);
latitude += convDeg3.substring(convDeg3.indexOf(".")+1,convDeg3.indexOf(".")+3) + "." + convDeg3.substring(convDeg3.indexOf(".")+3,convDeg3.indexOf(".")+5);
latitude += north_south;
return latitude;
}
String gpsDecimalToDegreesLongitude(double lon) {
String degrees = doubleToString(lon,6);
String east_west, longitude, convDeg3;
float convDeg, convDeg2;
if (abs(degrees.toFloat()) < 100) {
longitude += "0";
}
if (abs(degrees.toFloat()) < 10) {
longitude += "0";
}
if (degrees.indexOf("-") == 0) {
east_west = "W";
longitude += degrees.substring(1,degrees.indexOf("."));
} else {
east_west = "E";
longitude += degrees.substring(0,degrees.indexOf("."));
}
convDeg = abs(degrees.toFloat()) - abs(int(degrees.toFloat()));
convDeg2 = (convDeg * 60)/100;
convDeg3 = String(convDeg2,6);
longitude += convDeg3.substring(convDeg3.indexOf(".")+1,convDeg3.indexOf(".")+3) + "." + convDeg3.substring(convDeg3.indexOf(".")+3,convDeg3.indexOf(".")+5);
longitude += east_west;
return longitude;
}
void encodeMiceAltitude(uint8_t *buf, uint32_t alt_m) {
if (alt_m>40000) {
alt_m = 0;
}
uint32_t altoff;
altoff=alt_m+10000;
buf[0]=(altoff/8281)+33;
altoff=altoff%8281;
buf[1]=(altoff/91)+33;
buf[2]=(altoff%91)+33;
buf[3]='}';
}
void encodeMiceCourseSpeed(uint8_t *buf, uint32_t speed_kt, uint32_t course_deg) {
uint32_t SP28,DC28,SE28; //three bytes are output
uint32_t ten = speed_kt / 10;
if (ten <= 19) {
SP28 = ten + 108;
} else if (ten <= 79) {
SP28 = ten + 28;
} else {
SP28 = 107;
}
buf[0]=SP28;
if (course_deg == 0) {
course_deg = 360;
} else if (course_deg >= 360) {
course_deg = 0;
}
uint32_t course_hun = course_deg/100;
DC28=(speed_kt-ten*10)*10 + course_hun + 32;
buf[1]=DC28;
SE28=(course_deg-course_hun*100) + 28;
buf[2]=SE28;
}
void encodeMiceLongitude(uint8_t *buf, gpsLongitudeStruct *lon) {
uint32_t d28; // degrees
uint32_t deg = lon->degrees;
if (deg<=9) {
d28=118+deg;
} else if (deg<=99) {
d28=28+deg;
} else if (deg<=109) {
d28=8+deg;
} else {
d28=28+(deg-100);
}
buf[0] = d28;
uint32_t m28; // minutes
uint32_t min = lon->minutes;
if (min<=9) {
m28=88+min;
} else {
m28=28+min;
}
buf[1]=m28;
uint32_t h28;
h28=28+lon->minuteHundredths;
buf[2]=h28;
}
void encodeMiceDestinationField(String msgType, uint8_t *buf, const gpsLatitudeStruct *lat, gpsLongitudeStruct *lon) {
uint32_t temp;
temp = lat->degrees/10; // degrees
buf[0] = (temp + 0x30);
if (msgType[0] == '1') {
buf[0] = buf[0] + 0x20;
}
buf[1] = (lat->degrees-temp*10 + 0x30);
if (msgType[1] == '1') {
buf[1] = buf[1] + 0x20;
}
temp = lat->minutes/10; // minutes
buf[2] = (temp + 0x30);
if (msgType[2] == '1') {
buf[2] = buf[2] + 0x20;
}
buf[3] = (lat->minutes - temp*10 + 0x30) + (lat->north ? 0x20 : 0); // North validation
temp = lat->minuteHundredths/10; // minute hundredths
buf[4] = (temp + 0x30) + ((lon->degrees >= 100 || lon->degrees <= 9) ? 0x20 : 0); // Longitude Offset
buf[5] = (lat->minuteHundredths - temp*10 + 0x30) + (!lon->east ? 0x20 : 0); // West validation
}
gpsLatitudeStruct gpsDecimalToDegreesMiceLatitude(float latitude) {
gpsLatitudeStruct miceLatitudeStruct;
String lat = gpsDecimalToDegreesLatitude(latitude);
char latitudeArray[10];
strncpy(latitudeArray,lat.c_str(),8);
miceLatitudeStruct.degrees= 10*(latitudeArray[0]-'0')+latitudeArray[1]-'0';
miceLatitudeStruct.minutes= 10*(latitudeArray[2]-'0')+latitudeArray[3]-'0';
miceLatitudeStruct.minuteHundredths= 10*(latitudeArray[5]-'0')+latitudeArray[6]-'0';
if (latitudeArray[7] == 'N') {
miceLatitudeStruct.north = 1;
} else {
miceLatitudeStruct.north = 0;
}
return miceLatitudeStruct;
}
gpsLongitudeStruct gpsDecimalToDegreesMiceLongitude(float longitude) {
gpsLongitudeStruct miceLongitudeStruct;
String lng = gpsDecimalToDegreesLongitude(longitude);
char longitudeArray[10];
strncpy(longitudeArray,lng.c_str(),9);
miceLongitudeStruct.degrees= 100*(longitudeArray[0]-'0')+10*(longitudeArray[1]-'0')+longitudeArray[2]-'0';
miceLongitudeStruct.minutes= 10*(longitudeArray[3]-'0')+longitudeArray[4]-'0';
miceLongitudeStruct.minuteHundredths= 10*(longitudeArray[6]-'0')+longitudeArray[7]-'0';
if (longitudeArray[8] == 'E') {
miceLongitudeStruct.east = 1;
} else {
miceLongitudeStruct.east = 0;
}
return miceLongitudeStruct;
}
String generateMiceGPSBeacon(String miceMsgType, String callsign, String symbol, String overlay, String path, float latitude, float longitude, float course, float speed, int altitude) {
gpsLatitudeStruct latitudeStruct = gpsDecimalToDegreesMiceLatitude(latitude);
gpsLongitudeStruct longitudeStruct = gpsDecimalToDegreesMiceLongitude(longitude);
uint8_t miceDestinationArray[7];
encodeMiceDestinationField(miceMsgType, &miceDestinationArray[0], &latitudeStruct, &longitudeStruct);
miceDestinationArray[6] = 0x00; // por repetidor?
String miceDestination = (char*)miceDestinationArray;
uint8_t miceInfoFieldArray[14];
miceInfoFieldArray[0] = 0x60; // 0x60 for ` and 0x27 for '
encodeMiceLongitude(&miceInfoFieldArray[1], &longitudeStruct);
encodeMiceCourseSpeed(&miceInfoFieldArray[4], (uint32_t)speed, (uint32_t)course); //speed= gps.speed.knots(), course = gps.course.deg());
char symbolOverlayArray[1];
strncpy(symbolOverlayArray,symbol.c_str(),1);
miceInfoFieldArray[7] = symbolOverlayArray[0];
strncpy(symbolOverlayArray,overlay.c_str(),1);
miceInfoFieldArray[8] = symbolOverlayArray[0];
encodeMiceAltitude(&miceInfoFieldArray[9], (uint32_t)altitude); // altitude = gps.altitude.meters()
miceInfoFieldArray[13] = 0x00; // por repetidor?
String miceInformationField = (char*)miceInfoFieldArray;
String miceAPRSPacket = callsign + ">" + miceDestination;
if (path != "") {
miceAPRSPacket += "," + path;
}
miceAPRSPacket += ":" + miceInformationField;
return miceAPRSPacket;
}
String generateBasePacket(String callsign, String tocall, String path) {
String packet = callsign + ">" + tocall;
if (path != "") {
packet += "," + path;
}
return packet;
}
String generateStatusPacket(String callsign, String tocall, String path, String status) {
return generateBasePacket(callsign,tocall,path) + ":>" + status;
}
String generateMessagePacket(String callsign, String tocall, String path, String addressee, String message) {
for(int i = addressee.length(); i < 9; i++) {
addressee += ' ';
}
return generateBasePacket(callsign,tocall,path) + "::" + addressee + ":" + message;
}
String generateDigiRepeatedPacket(APRSPacket packet, String callsign) {
if (packet.path.indexOf("WIDE1-")>=0) {
String hop = packet.path.substring(packet.path.indexOf("WIDE1-")+6, packet.path.indexOf("WIDE1-")+7);
if (hop.toInt()>=1 && hop.toInt()<=7) {
if (hop.toInt()==1) {
packet.path.replace("WIDE1-1", callsign + "*");
} else {
packet.path.replace("WIDE1-" + hop , callsign + "*,WIDE1-" + String(hop.toInt()-1));
}
String repeatedPacket = packet.sender + ">" + packet.tocall + "," + packet.path;
switch (packet.type) {
case 0: // gps
repeatedPacket += ":!";
break;
case 1: // message
for(int i = packet.addressee.length(); i < 9; i++) {
packet.addressee += ' ';
}
repeatedPacket += "::" + packet.addressee + ":";
break;
case 2: // status
repeatedPacket += ":>";
break;
case 3: // telemetry
repeatedPacket += ":T#";
break;
case 4: // mic-e
repeatedPacket += ":`";
break;
case 5: // object
repeatedPacket += ":;";
break;
}
return repeatedPacket + packet.message;
} else {
return "X";
}
} else {
return "X";
}
}
char *ax25_base91enc(char *s, uint8_t n, uint32_t v) {
for(s += n, *s = '\0'; n; n--) {
*(--s) = v % 91 + 33;
v /= 91;
}
return(s);
}
String encondeGPS(float latitude, float longitude, float course, float speed, String symbol, bool sendAltitude, int altitude, bool sendStandingUpdate, String packetType) {
String encodedData;
uint32_t aprs_lat, aprs_lon;
aprs_lat = 900000000 - latitude * 10000000;
aprs_lat = aprs_lat / 26 - aprs_lat / 2710 + aprs_lat / 15384615;
aprs_lon = 900000000 + longitude * 10000000 / 2;
aprs_lon = aprs_lon / 26 - aprs_lon / 2710 + aprs_lon / 15384615;
String Ns, Ew, helper;
if(latitude < 0) { Ns = "S"; } else { Ns = "N"; }
if(latitude < 0) { latitude= -latitude; }
if(longitude < 0) { Ew = "W"; } else { Ew = "E"; }
if(longitude < 0) { longitude= -longitude; }
char helper_base91[] = {"0000\0"};
int i;
ax25_base91enc(helper_base91, 4, aprs_lat);
for (i=0; i<4; i++) {
encodedData += helper_base91[i];
}
ax25_base91enc(helper_base91, 4, aprs_lon);
for (i=0; i<4; i++) {
encodedData += helper_base91[i];
}
if (packetType=="Wx") {
encodedData += "_";
} else {
encodedData += symbol;
}
if (sendAltitude) { // Send Altitude or... (APRS calculates Speed also)
int Alt1, Alt2;
if(altitude>0) {
double ALT=log(altitude)/log(1.002);
Alt1= int(ALT/91);
Alt2=(int)ALT%91;
} else {
Alt1=0;
Alt2=0;
}
if (sendStandingUpdate) {
encodedData += " ";
} else {
encodedData +=char(Alt1+33);
}
encodedData +=char(Alt2+33);
encodedData +=char(0x30+33);
} else { // ... just send Course and Speed
ax25_base91enc(helper_base91, 1, (uint32_t) course/4 );
if (sendStandingUpdate) {
encodedData += " ";
} else {
encodedData += helper_base91[0];
}
ax25_base91enc(helper_base91, 1, (uint32_t) (log1p(speed)/0.07696));
encodedData += helper_base91[0];
encodedData += "\x47";
}
return encodedData;
}
String generateGPSBeaconPacket(String callsign, String tocall, String path, String overlay, String gps) {
return generateBasePacket(callsign,tocall,path) + ":!" + overlay + gps;
}
float decodeEncodedLatitude(String encodedLatitude) {
int Y1 = int(encodedLatitude[0]);
int Y2 = int(encodedLatitude[1]);
int Y3 = int(encodedLatitude[2]);
int Y4 = int(encodedLatitude[3]);
return (90.0 - ((((Y1-33) * pow(91,3)) + ((Y2-33) * pow(91,2)) + ((Y3-33) * 91) + Y4-33) / 380926.0));
}
float decodeEncodedLongitude(String encodedLongitude) {
int X1 = int(encodedLongitude[0]);
int X2 = int(encodedLongitude[1]);
int X3 = int(encodedLongitude[2]);
int X4 = int(encodedLongitude[3]);
return (-180.0 + ((((X1-33) * pow(91,3)) + ((X2-33) * pow(91,2)) + ((X3-33) * 91) + X4-33) / 190463.0));
}
int decodeEncodedCourse(String course) {
return (course.toInt() - 33) * 4;
}
int decodeEncodedSpeed(String speed) {
return (pow(1.08,(speed.toInt() - 33)) - 1) * 1.852;
}
int decodeEncodedAltitude(String altitude) {
char cLetter = altitude[0];
char sLetter = altitude[1];
int c = static_cast<int>(cLetter);
int s = static_cast<int>(sLetter);
return pow(1.002,((c - 33) * 91) + (s-33)) * 0.3048;
}
float decodeLatitude(String Latitude) {
String firstLatPart = Latitude.substring(0,2);
String secondLatPart = Latitude.substring(2,4);
String thirdLatPart = Latitude.substring(Latitude.indexOf(".")+1,Latitude.indexOf(".")+3);
float convertedLatitude = firstLatPart.toFloat() + (secondLatPart.toFloat()/60) + (thirdLatPart.toFloat()/(60*100));
String LatSign = String(Latitude[7]);
if (LatSign == "S") {
return -convertedLatitude;;
} else {
return convertedLatitude;
}
}
float decodeLongitude(String Longitude) {
String firstLngPart = Longitude.substring(0,3);
String secondLngPart = Longitude.substring(3,5);
String thirdLngPart = Longitude.substring(Longitude.indexOf(".")+1,Longitude.indexOf(".")+3);
float convertedLongitude = firstLngPart.toFloat() + (secondLngPart.toFloat()/60) + (thirdLngPart.toFloat()/(60*100));
String LngSign = String(Longitude[8]);
if (LngSign == "W") {
return -convertedLongitude;
} else {
return convertedLongitude;
}
}
int decodeCourse(String course) {
if (course == "..." || course == "000") {
return 0;
} else {
return course.toInt();
}
}
int decodeSpeed(String speed) {
return speed.toInt() * 1.852;
}
int decodeAltitude(String altitude) {
return altitude.toInt() * 0.3048;
}
String decodeMiceMsgType(String tocall) {
String miceType;
for (int i=0; i<3; i++) {
if (int(tocall[i]) > 57) {
miceType += "1";
} else {
miceType += "0";
}
}
return miceType;
}
String decodeMiceSymbol(String informationField) {
return informationField.substring(6,7);
}
String decodeMiceOverlay(String informationField) {
return informationField.substring(7,8);
}
int decodeMiceSpeed(String informationField) {
int temp = int(informationField[3]);
if (temp>107) {
temp -= 80;
}
int SP28 = (temp-28)*10;
int DC28 = (int(informationField[4]) - 28)/10;
return (SP28 + DC28) * 1.852;
}
int decodeMiceCourse(String informationField) {
int DC28 = (int(informationField[4]) - 28)/10;
int temp = (int(informationField[4]) - 28) - (DC28*10);
int SE28 = int(informationField[5]) - 28;
int course = ((temp - 4) * 100) + SE28;
return course;
}
int decodeMiceAltitude(String informationField) {
int altitude;
String temp;
if (informationField.indexOf("`")==8 && informationField.indexOf("}")==12) {
temp = informationField.substring(9,12);
} else if (informationField.indexOf("}")==11) {
temp = informationField.substring(8,11);
} else {
temp = "";
}
if (temp.length()!=0) {
int a = int(temp[0]) - 33;
int b = int(temp[1]) - 33;
int c = int(temp[2]) - 33;
altitude = (a*pow(91,2) + b*91 + c) - 10000;
} else {
altitude = 0;
}
return altitude;
}
float gpsDegreesToDecimalLatitude(String degreesLatitude) {
int degrees = degreesLatitude.substring(0,2).toInt();
int minute = degreesLatitude.substring(2,4).toInt();
int minuteHundredths = degreesLatitude.substring(5,7).toInt();
String northSouth = degreesLatitude.substring(7);
float decimalLatitude = degrees + (minute/60.0) + (minuteHundredths/10000.0);
if (northSouth=="N") {
return decimalLatitude;
} else {
return -decimalLatitude;
}
}
float gpsDegreesToDecimalLongitude(String degreesLongitude) {
int degrees = degreesLongitude.substring(0,3).toInt();
int minute = degreesLongitude.substring(3,5).toInt();
int minuteHundredths = degreesLongitude.substring(6,8).toInt();
String westEast = degreesLongitude.substring(8);
float decimalLongitude = degrees + (minute/60.0) + (minuteHundredths/10000.0);
if (westEast=="W") {
return -decimalLongitude;
} else {
return decimalLongitude;
}
}
float decodeMiceLatitude(String destinationField) {
String gpsLat;
String northSouth;
for (int i=0; i<=5; i++) {
if (int(destinationField[i]) > 57) {
gpsLat += char(int(destinationField[i]) - 32);
} else {
gpsLat += char(int(destinationField[i]));
}
if (i==3) {
gpsLat += ".";
if (int(destinationField[i]) > 57) {
northSouth = "N";
} else {
northSouth = "S";
}
}
}
gpsLat += northSouth;
return gpsDegreesToDecimalLatitude(gpsLat);
}
float decodeMiceLongitude(String destinationField, String informationField) {
bool offset = false;
String westEast = "E";
if (int(destinationField[4]) > 57) {
offset = true;
}
if (int(destinationField[5]) > 57) {
westEast = "W";
}
String longitudeString, temp;
int d28 = (int)informationField[0] - 28;
if (offset) {
d28 += 100;
}
temp = String(d28);
for(int i = temp.length(); i < 3; i++) {
temp = '0' + temp;
}
longitudeString = temp;
int m28 = (int)informationField[1] - 28;
if (m28 >= 60) {
m28 -= 60;
}
temp = String(m28);
for(int i = temp.length(); i < 2; i++) {
temp = '0' + temp;
}
longitudeString += temp + ".";
int h28 = (int)informationField[2] - 28;
temp = String(h28);
for(int i = temp.length(); i < 2; i++) {
temp = '0' + temp;
}
longitudeString += temp + westEast;
return gpsDegreesToDecimalLongitude(longitudeString) ;
}
APRSPacket processReceivedPacket(String receivedPacket) {
/* Packet type:
gps = 0
message = 1
status = 2
telemetry = 3
mic-e = 4
object = 5 */
APRSPacket aprsPacket;
aprsPacket.sender = receivedPacket.substring(0,receivedPacket.indexOf(">"));
String temp0 = receivedPacket.substring(receivedPacket.indexOf(">")+1,receivedPacket.indexOf(":"));
if (temp0.indexOf(",") > 2) {
aprsPacket.tocall = temp0.substring(0,temp0.indexOf(","));
aprsPacket.path = temp0.substring(temp0.indexOf(",")+1,temp0.indexOf(":"));
} else {
aprsPacket.tocall = temp0;
aprsPacket.path = "";
}
if (receivedPacket.indexOf(":!") > 10 || receivedPacket.indexOf(":=") > 10 ) {
aprsPacket.type = 0;
String gpsChar = "";
if (receivedPacket.indexOf(":!") > 10) {
gpsChar = ":!";
} else {
gpsChar = ":=";
}
int encodedBytePosition = receivedPacket.indexOf(gpsChar) + 14;
aprsPacket.message = receivedPacket.substring(receivedPacket.indexOf(gpsChar)+2);
if (String(receivedPacket[encodedBytePosition]) == "G" || String(receivedPacket[encodedBytePosition]) == "Q" || String(receivedPacket[encodedBytePosition]) == "[" || String(receivedPacket[encodedBytePosition]) == "H") {
aprsPacket.latitude = decodeEncodedLatitude(receivedPacket.substring(receivedPacket.indexOf(gpsChar)+3, receivedPacket.indexOf(gpsChar)+7));
aprsPacket.longitude = decodeEncodedLongitude(receivedPacket.substring(receivedPacket.indexOf(gpsChar)+7, receivedPacket.indexOf(gpsChar)+11));
aprsPacket.symbol = receivedPacket.substring(receivedPacket.indexOf(gpsChar)+11, receivedPacket.indexOf(gpsChar)+12);
aprsPacket.overlay = receivedPacket.substring(receivedPacket.indexOf(gpsChar)+2,receivedPacket.indexOf(gpsChar)+3);
if (receivedPacket.substring(receivedPacket.indexOf(gpsChar)+12, receivedPacket.indexOf(gpsChar)+13) == " ") {
aprsPacket.course = 0;
aprsPacket.speed = 0;
aprsPacket.altitude = 0;
} else {
if (String(receivedPacket[encodedBytePosition]) == "Q") { // altitude csT
aprsPacket.altitude = decodeEncodedAltitude(receivedPacket.substring(receivedPacket.indexOf(gpsChar)+12, receivedPacket.indexOf(gpsChar)+14));
aprsPacket.course = 0;
aprsPacket.speed = 0;
} else { // normal csT
aprsPacket.course = decodeEncodedCourse(receivedPacket.substring(receivedPacket.indexOf(gpsChar)+12, receivedPacket.indexOf(gpsChar)+13));
aprsPacket.speed = decodeEncodedSpeed(receivedPacket.substring(receivedPacket.indexOf(gpsChar)+13, receivedPacket.indexOf(gpsChar)+14));
aprsPacket.altitude = 0;
}
}
} else {
aprsPacket.latitude = decodeLatitude(receivedPacket.substring(receivedPacket.indexOf(gpsChar)+2,receivedPacket.indexOf(gpsChar)+10));
aprsPacket.longitude = decodeLongitude(receivedPacket.substring(receivedPacket.indexOf(gpsChar)+11,receivedPacket.indexOf(gpsChar)+20));
aprsPacket.symbol = receivedPacket.substring(receivedPacket.indexOf(gpsChar)+20,receivedPacket.indexOf(gpsChar)+21);
aprsPacket.overlay = receivedPacket.substring(receivedPacket.indexOf(gpsChar)+10,receivedPacket.indexOf(gpsChar)+11);
if (receivedPacket.substring(receivedPacket.indexOf(gpsChar)+24,receivedPacket.indexOf(gpsChar)+25) == "/" && receivedPacket.substring(receivedPacket.indexOf(gpsChar)+28,receivedPacket.indexOf(gpsChar)+31) == "/A=") {
aprsPacket.course = decodeCourse(receivedPacket.substring(receivedPacket.indexOf(gpsChar)+21,receivedPacket.indexOf(gpsChar)+24));
aprsPacket.speed = decodeSpeed(receivedPacket.substring(receivedPacket.indexOf(gpsChar)+25,receivedPacket.indexOf(gpsChar)+28));
aprsPacket.altitude = decodeAltitude(receivedPacket.substring(receivedPacket.indexOf(gpsChar)+31,receivedPacket.indexOf(gpsChar)+39));
} else {
aprsPacket.course = 0;
aprsPacket.speed = 0;
aprsPacket.altitude = 0;
}
}
} else if (receivedPacket.indexOf("::") > 10) {
aprsPacket.type = 1;
String temp1 = receivedPacket.substring(receivedPacket.indexOf("::")+2);
String temp2 = temp1.substring(0,temp1.indexOf(":"));
temp2.trim();
aprsPacket.addressee = temp2;
aprsPacket.message = temp1.substring(temp1.indexOf(":")+1);
aprsPacket.latitude = 0;
aprsPacket.longitude = 0;
} else if (receivedPacket.indexOf(":>") > 10) {
aprsPacket.type = 2;
aprsPacket.message = receivedPacket.substring(receivedPacket.indexOf(":>")+2);
} else if (receivedPacket.indexOf(":T#") >= 10 && receivedPacket.indexOf(":=/") == -1) {
aprsPacket.type = 3;
aprsPacket.message = receivedPacket.substring(receivedPacket.indexOf(":T#")+3);
} else if (receivedPacket.indexOf(":`") > 10 || receivedPacket.indexOf(":'") > 10) {
aprsPacket.type = 4;
if (receivedPacket.indexOf(":`") > 10) {
aprsPacket.message = receivedPacket.substring(receivedPacket.indexOf(":`")+2);
} else {
aprsPacket.message = receivedPacket.substring(receivedPacket.indexOf(":'")+2);
}
aprsPacket.miceType = decodeMiceMsgType(aprsPacket.tocall);
aprsPacket.symbol = decodeMiceSymbol(aprsPacket.message);
aprsPacket.overlay = decodeMiceOverlay(aprsPacket.message);
aprsPacket.latitude = decodeMiceLatitude(aprsPacket.tocall);
aprsPacket.longitude = decodeMiceLongitude(aprsPacket.tocall, aprsPacket.message);
aprsPacket.speed = decodeMiceSpeed(aprsPacket.message);
aprsPacket.course = decodeMiceCourse(aprsPacket.message);
aprsPacket.altitude = decodeMiceAltitude(aprsPacket.message);
} else if (receivedPacket.indexOf(":;") > 10) {
aprsPacket.type = 5;
aprsPacket.message = receivedPacket.substring(receivedPacket.indexOf(":;")+2);
}
if (aprsPacket.type!=1) {
aprsPacket.addressee = "";
}
if (aprsPacket.type!=0 && aprsPacket.type!=4) {
aprsPacket.symbol = "";
aprsPacket.overlay = "";
aprsPacket.latitude = 0;
aprsPacket.longitude = 0;
aprsPacket.course = 0;
aprsPacket.speed = 0;
aprsPacket.altitude = 0;
}
if (aprsPacket.type!=4) {
aprsPacket.miceType = "";
}
return aprsPacket;
}
}
Reference in New Issue View Git Blame Copy Permalink