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Tweaked FDM interface.

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Testing check sum support for NMEA serial output.
This commit is contained in:
curt 1999-01-20 13:42:21 +00:00
parent 180e2188ba
commit af6c921757
1 changed files with 20 additions and 1 deletions
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21
Serial/serial.cxx
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@ -186,12 +186,27 @@ string fgSERIAL::read_port() {
}
int fgSERIAL::write_port(const string& value) {
static bool error = false;
int count;
if ( error ) {
// attempt some sort of error recovery
count = write(fd, "\n", 1);
if ( count == 1 ) {
// cout << "Serial error recover successful!\n";
error = false;
} else {
return 0;
}
}
count = write(fd, value.c_str(), value.length());
// cout << "write '" << value << "' " << count << " bytes" << endl;
if ( (int)count != (int)value.length() ) {
if ( (int)count == (int)value.length() ) {
error = false;
} else {
error = true;
if ( errno == EAGAIN ) {
// ok ... in our context we don't really care if we can't
// write a string, we'll just get it the next time around
@ -206,6 +221,10 @@ int fgSERIAL::write_port(const string& value) {
// $Log$
// Revision 1.8 1999/01/20 13:42:21 curt
// Tweaked FDM interface.
// Testing check sum support for NMEA serial output.
//
// Revision 1.7 1998/12/04 01:24:35 curt
// Tweak for SGI portability.
//