-#include <iostream>
+#ifdef HAVE_CONFIG_H
+# include <config.h>
+#endif
-#include <plib/ul.h>
+#include <iostream>
#include <simgear/constants.h>
#include <simgear/io/sg_file.hxx>
#include <simgear/math/sg_geodesy.hxx>
#include <simgear/misc/sgstream.hxx>
#include <simgear/misc/strutils.hxx>
+#include <simgear/misc/stdint.hxx>
#include "MIDG-II.hxx"
-SG_USING_STD(cout);
-SG_USING_STD(endl);
+using std::cout;
+using std::endl;
MIDGTrack::MIDGTrack() {};
char *ptr = buf + offset;
// MIDG data is big endian so swap if needed.
- if ( ulIsLittleEndian ) {
+ if ( sgIsLittleEndian() ) {
if ( size == 4 ) {
- ulEndianSwap( (uint32_t *)ptr );
+ sgEndianSwap( (uint32_t *)ptr );
} else if ( size == 2 ) {
- ulEndianSwap( (uint16_t *)ptr );
+ sgEndianSwap( (uint16_t *)ptr );
}
}
c0 += id;
c1 += c0;
+ // cout << "c0 = " << (unsigned int)c0 << " c1 = " << (unsigned int)c1 << endl;
c0 += size;
c1 += c0;
+ // cout << "c0 = " << (unsigned int)c0 << " c1 = " << (unsigned int)c1 << endl;
for ( uint8_t i = 0; i < size; i++ ) {
c0 += (uint8_t)buf[i];
c1 += c0;
+ // cout << "c0 = " << (unsigned int)c0 << " c1 = " << (unsigned int)c1
+ // << " [" << (unsigned int)buf[i] << "]" << endl;
}
// cout << "c0 = " << (unsigned int)c0 << " (" << (unsigned int)cksum0
// 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;
while ( ! input.eof() ) {
// cout << "looking for next message ..." << endl;
- int id = next_message( &input, &pos, &att );
+ int id = next_message( &input, NULL, &pos, &att );
count++;
if ( id == 10 ) {
}
+// attempt to work around some system dependent issues. Our read can
+// return < data than we want.
+int myread( SGIOChannel *ch, SGIOChannel *log, char *buf, int length ) {
+ bool myeof = false;
+ int result = 0;
+ 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 ) {
+ log->write( buf, result );
+ }
+
+ 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, MIDGpos *pos, MIDGatt *att ) {
+int MIDGTrack::next_message( SGIOChannel *ch, 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;
- ch->read( tmpbuf, 1 ); sync0 = (unsigned char)tmpbuf[0];
- ch->read( tmpbuf, 1 ); sync1 = (unsigned char)tmpbuf[0];
- while ( (sync0 != 129 || sync1 != 161) && !ch->eof() ) {
+ myread( ch, log, tmpbuf, 1 ); sync0 = (unsigned char)tmpbuf[0];
+ myread( ch, log, tmpbuf, 1 ); sync1 = (unsigned char)tmpbuf[0];
+ while ( (sync0 != 129 || sync1 != 161) && !myeof ) {
sync0 = sync1;
- ch->read( tmpbuf, 1 ); sync1 = (unsigned char)tmpbuf[0];
+ myread( ch, log, tmpbuf, 1 ); sync1 = (unsigned char)tmpbuf[0];
+ // 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 << "start of message ..." << endl;
+ // cout << "found start of message ..." << endl;
// read message id and size
- ch->read( tmpbuf, 1 ); uint8_t id = (unsigned char)tmpbuf[0];
- ch->read( tmpbuf, 1 ); uint8_t size = (unsigned char)tmpbuf[0];
+ myread( ch, log, tmpbuf, 1 ); uint8_t id = (unsigned char)tmpbuf[0];
+ myread( ch, log, tmpbuf, 1 ); uint8_t size = (unsigned char)tmpbuf[0];
// cout << "message = " << (int)id << " size = " << (int)size << endl;
// load message
- ch->read( savebuf, size );
+ if ( ch->get_type() == sgFileType ) {
+ int count = myread( ch, log, savebuf, size );
+ if ( count != size ) {
+ 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
- ch->read( tmpbuf, 1 ); uint8_t cksum0 = (unsigned char)tmpbuf[0];
- ch->read( tmpbuf, 1 ); uint8_t cksum1 = (unsigned char)tmpbuf[0];
+ 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 );
}
+// 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];
+ int result = 0;
+
+ cout << "in next_message()" << endl;
+
+ bool myeof = false;
+
+ // scan for sync characters
+ uint8_t sync0, sync1;
+ result = 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