#ifdef HAVE_CONFIG_H
# include <config.h>
-#endif
+#endif
+
+#include <simgear/compiler.h>
#include <iostream>
#include "MIDG-II.hxx"
-SG_USING_STD(cout);
-SG_USING_STD(endl);
+using std::cout;
+using std::endl;
MIDGTrack::MIDGTrack() {};
MIDGTrack::~MIDGTrack() {};
-
-
+/*
+ * Unused function
+ */
+#if(0)
static uint32_t read_swab( char *buf, size_t offset, size_t size ) {
uint32_t result = 0;
return result;
}
+#endif
static bool validate_cksum( uint8_t id, uint8_t size, char *buf,
void MIDGTrack::parse_msg( const int id, char *buf, MIDGpos *pos, MIDGatt *att )
{
+/*
+ * Completely unused parser results. Removed from compiling to remove the warnings
+ */
+#if(0)
if ( id == 1 ) {
uint32_t ts;
uint16_t status;
// timestamp
ts = (uint32_t)read_swab( buf, 0, 4 );
// cout << " time stamp = " << ts << endl;
-
+
// status
status = (uint16_t)read_swab( buf, 4, 2 );
// cout << " status = " << status << endl;
// cout << " pos = " << posx << "," << posy << "," << posz << endl;
double xyz[3];
- xyz[0] = posx/100; xyz[1] = posy/100; xyz[2] = posz/100;
+ xyz[0] = (double)posx/100; xyz[1] = (double)posy/100; xyz[2] = (double)posz/100;
double lat, lon, alt;
sgCartToGeod(xyz, &lat, &lon, &alt);
pos->lat_deg = lat * 180.0 / SG_PI;
// position dop
pdop = (uint16_t)read_swab( buf, 32, 2 );
// cout << " pdop = " << pdop << endl;
-
+
// position accuracy
pacc = (uint16_t)read_swab( buf, 34, 2 );
// cout << " pacc = " << pacc << endl;
-
+
// speed accuracy
sacc = (uint16_t)read_swab( buf, 36, 2 );
// cout << " sacc = " << sacc << endl;
-
+
} else {
cout << "unknown id = " << id << endl;
}
+#endif
}
int myread( SGIOChannel *ch, SGIOChannel *log, char *buf, int length ) {
bool myeof = false;
int result = 0;
- while ( result != length && !myeof ) {
- result = ch->read( buf, length );
- if ( ch->get_type() == sgFileType ) {
- myeof = ((SGFile *)ch)->eof();
- }
+ if ( !myeof ) {
+ result = ch->read( buf, length );
+ // cout << "wanted " << length << " read " << result << " bytes" << endl;
+ if ( ch->get_type() == sgFileType ) {
+ myeof = ((SGFile *)ch)->eof();
+ }
}
if ( result > 0 && log != NULL ) {
return result;
}
+// attempt to work around some system dependent issues. Our read can
+// return < data than we want.
+int serial_read( SGSerialPort *serial, char *buf, int length ) {
+ int result = 0;
+ int bytes_read = 0;
+ char *tmp = buf;
+
+ while ( bytes_read < length ) {
+ result = serial->read_port( tmp, length - bytes_read );
+ bytes_read += result;
+ tmp += result;
+ // cout << " read " << bytes_read << " of " << length << endl;
+ }
+
+ return bytes_read;
+}
+
// load the next message of a real time data stream
int MIDGTrack::next_message( SGIOChannel *ch, SGIOChannel *log,
MIDGpos *pos, MIDGatt *att )
while ( (sync0 != 129 || sync1 != 161) && !myeof ) {
sync0 = sync1;
myread( ch, log, tmpbuf, 1 ); sync1 = (unsigned char)tmpbuf[0];
- // cout << "scanning for start of message, eof = " << ch->eof() << endl;
+ // cout << "scanning for start of message "
+ // << (unsigned int)sync0 << " " << (unsigned int)sync1
+ // << ", eof = " << ch->eof() << endl;
if ( ch->get_type() == sgFileType ) {
myeof = ((SGFile *)ch)->eof();
}
cout << "ERROR: didn't read enough bytes!" << endl;
}
} else {
+#ifdef READ_ONE_BY_ONE
for ( int i = 0; i < size; ++i ) {
myread( ch, log, tmpbuf, 1 ); savebuf[i] = tmpbuf[0];
}
+#else
+ myread( ch, log, savebuf, size );
+#endif
}
// read checksum
myread( ch, log, tmpbuf, 1 ); uint8_t cksum0 = (unsigned char)tmpbuf[0];
myread( ch, log, tmpbuf, 1 ); uint8_t cksum1 = (unsigned char)tmpbuf[0];
-
+
if ( validate_cksum( id, size, savebuf, cksum0, cksum1 ) ) {
parse_msg( id, savebuf, pos, att );
return id;
}
+// load the next message of a real time data stream
+int MIDGTrack::next_message( SGSerialPort *serial, SGIOChannel *log,
+ MIDGpos *pos, MIDGatt *att )
+{
+ char tmpbuf[256];
+ char savebuf[256];
+
+ cout << "in next_message()" << endl;
+
+ bool myeof = false;
+
+ // scan for sync characters
+ uint8_t sync0, sync1;
+ serial_read( serial, tmpbuf, 2 );
+ sync0 = (unsigned char)tmpbuf[0];
+ sync1 = (unsigned char)tmpbuf[1];
+ while ( (sync0 != 129 || sync1 != 161) && !myeof ) {
+ sync0 = sync1;
+ serial_read( serial, tmpbuf, 1 ); sync1 = (unsigned char)tmpbuf[0];
+ cout << "scanning for start of message "
+ << (unsigned int)sync0 << " " << (unsigned int)sync1
+ << endl;
+ }
+
+ cout << "found start of message ..." << endl;
+
+ // read message id and size
+ serial_read( serial, tmpbuf, 2 );
+ uint8_t id = (unsigned char)tmpbuf[0];
+ uint8_t size = (unsigned char)tmpbuf[1];
+ // cout << "message = " << (int)id << " size = " << (int)size << endl;
+
+ // load message
+ serial_read( serial, savebuf, size );
+
+ // read checksum
+ serial_read( serial, tmpbuf, 2 );
+ uint8_t cksum0 = (unsigned char)tmpbuf[0];
+ uint8_t cksum1 = (unsigned char)tmpbuf[1];
+
+ if ( validate_cksum( id, size, savebuf, cksum0, cksum1 ) ) {
+ parse_msg( id, savebuf, pos, att );
+
+ //
+ // FIXME
+ // WRITE DATA TO LOG FILE
+ //
+
+ return id;
+ }
+
+ cout << "Check sum failure!" << endl;
+ return -1;
+
+
+}
+
+
static double interp( double a, double b, double p, bool rotational = false ) {
double diff = b - a;
if ( rotational ) {
projects / flightgear.git / blobdiff