void NMEAGPS::setBoatDirection(int bearing){
boat.boatDirection = bearing;
q.setProperty("boatDirection", boat.boatDirection);
ui->gemap->page()->mainFrame()->evaluateJavaScript("setBoatAngle();");
QString newString = "$IIHDG,"+ QString::number(bearing) +",,,7.1,W";
newString = newString + "*" + generateChecksum(newString);
//if(newString != NMEAString){
NMEAString = newString;
emit newNMEAString(NMEAString);
//}
}
int PanasonicProtocol::generateStandardCommand(
const PIRKeyBits &pkb,
PIRInfraredLED &led)
{
int duration = 0;
// First, the header pulse:
led.addPair(headerPulse, headerSpace);
duration += (headerPulse + headerSpace);
// Similar to the "Kaseikyo" protocol, this protocol is 48 bits long.
// In this case, the first 16 bits are a fixed value (defining the
// manufacturer?). Next comes eight bits for the "device", eight more
// bits for the "subdevice", and then eight bits for the "command".
// Finally, the last eight bits are a checksum generated by x-oring the
// device, subdevice, and command bytes.
// The 16 manufacturer code bits:
duration += pushReverseBits(preData, led);
// The eight device bits:
duration += pushReverseBits(pkb.firstCode, led);
// The eight subdevice bits:
duration += pushReverseBits(pkb.secondCode, led);
// The eight command bits:
duration += pushReverseBits(pkb.thirdCode, led);
// Finally, the checksum:
CommandSequence checksum;
generateChecksum(pkb.firstCode, pkb.secondCode, pkb.thirdCode, checksum);
duration += pushReverseBits(checksum, led);
// Add the trailer pulse:
led.addSingle(trailerPulse);
duration += trailerPulse;
return duration;
}
void NMEAGPS::coordinatesChanged() {
QString str = "$IIRMC,";
str += ",A,";
str += ui->latLineEdit->text() + ",";
if(boat.latitude>=0)
str+= "N,";
else{
str+= "S,";
}
qDebug() << ui->longLineEdit->text();
str += ui->longLineEdit->text() + ",";
if(boat.longnitude<0){
str+= "W,";
}
else
str+= "E,";
str +=QString::number(boat.boatSpeed)+",";
str +="0.0,"; //track made good ???
str +=","; //date
str = str + "*" + generateChecksum(str);
emit newNMEAString(str);
// if(NMEAString!=""){
// }
// if(str != NMEAString){
// NMEAString = str;
// emit newNMEAString(NMEAString);
// }
//setBoatMapLocation(lat, lng);
}
int main(int argc,char *argv[])
{
if(argc < 2)
{
printError("Usage: <portNumber> <outputFileName>");
}
frame messageFrame;
int network_socket;
int connection_status;
struct sockaddr_in server_address,client_address;
struct timeval tv;
int structure_length = sizeof(client_address);
FILE *outputFile;
char *outputFileName = argv[2];
char * portNumber = argv[1];
//DATA MEMBERS FOR COMPARISON
int checksum = 0;
char * const sendMessage = (char*)malloc(sizeof(char)*1);
int prevSeq = 1;
network_socket = socket(AF_INET,SOCK_DGRAM,IPPROTO_UDP);
if(connection_status == -1)
{
printError("Unable to Create Socket!\n");
}
//CLEAR SERVER STRUCTURE
memset((char*) &server_address,0,sizeof(server_address));
//FILL IN THE SERVER STRUCTURE
server_address.sin_family = AF_INET;
server_address.sin_port = htons(atoi(portNumber));
server_address.sin_addr.s_addr = htonl(INADDR_ANY);
//BIND SOCKET
connection_status = bind(network_socket,(struct sockaddr*) &server_address,sizeof(server_address));
if(connection_status == -1)
{
perror("Cannot Bind Port\n!");
}
outputFile = fopen(outputFileName,"wb");
/* Set Timeout */
tv.tv_sec = 1;
tv.tv_usec = 0;
/* Set socket option to timeout on recvfrom */
setsockopt(network_socket, SOL_SOCKET, SO_RCVTIMEO, (char*)&tv, sizeof(struct timeval));
//START THE RECEPTION LOOP
while(1)
{
printf("Waiting for Data...\n");
connection_status = recvfrom(network_socket,&messageFrame,sizeof(messageFrame),0,(struct sockaddr *) &client_address,&structure_length);
if(strcmp(messageFrame.payload,"exit") == 0)
{
printf("Data Transmission Completed...!\n");
break;
}
checksum = generateChecksum(messageFrame.payload,10);
if(checksum != messageFrame.checksum)
{
//WAIT FOR RETRANSMISSION AND DO NOT SEND ACK
printf("CHECKSUM MISMATCH!!\n");
continue;
}
/*** SEQUENCE CHECK ************/
if(prevSeq == messageFrame.sequenceNumber)
{
//SEND PREVIOUS ACK
if(prevSeq == 0)
{
strcpy(sendMessage,"0");
}
else if(prevSeq == 1)
{
strcpy(sendMessage,"1");
}
printf("****SEQUENCE MISMATCH!\n");
printf("****RESENDING ACK %d\n",prevSeq);
sendto(network_socket,sendMessage,1,0,(struct sockaddr*) &client_address,structure_length);
continue;
}
printf("Received Data: %s\n",messageFrame.payload);
printf("Message Verified! Writing to File...\n");
printf("***********************\n");
//WRITE DATA TO FILE IF CHECKSUM IS FINE
if(outputFileName[strlen(outputFileName)-3] == 't' && outputFileName[strlen(outputFileName)-2] == 'x' && outputFileName[strlen(outputFileName)-1] == 't')
{
fwrite(messageFrame.payload,sizeof(char),strlen(messageFrame.payload),outputFile);
}
else
{
fwrite(messageFrame.payload,sizeof(char),10,outputFile);
}
//SEND ACK TO CLIENT
printf("Sending ACK for SEQ: %d\n",messageFrame.sequenceNumber);
if(messageFrame.sequenceNumber == 0)
{
strcpy(sendMessage,"0");
prevSeq = 0;
}
else if(messageFrame.sequenceNumber == 1)
{
strcpy(sendMessage,"1");
prevSeq = 1;
}
sendto(network_socket,sendMessage,1,0,(struct sockaddr*) &client_address,structure_length);
printf("***********************\n");
printf("***********************\n");
memset(messageFrame.payload,'\0',11);
}
//CLEANUP CODE
close(network_socket);
fclose(outputFile);
free(sendMessage);
return 0;
}
