Flush the queue so that we don't get any funny data on the initial read.

Andrzej Kapolka committed 13 years ago

Commit 559dc4b1 parent 2ffd1511 file · +3 −0Browse files

Showing the changes to interface/src/SerialInterface.cpp (1 of 1 file). Show all

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interface/src/SerialInterface.cpp+3−0

@@ -99,6 +99,9 @@ void SerialInterface::initializePort(char* portname) { · 98 unmodified lines
99	int currentFlags = fcntl(_serialDescriptor, F_GETFL);	99	int currentFlags = fcntl(_serialDescriptor, F_GETFL);
100	fcntl(_serialDescriptor, F_SETFL, currentFlags & ~O_NONBLOCK);	100	fcntl(_serialDescriptor, F_SETFL, currentFlags & ~O_NONBLOCK);
101		101
		102	// make sure there's nothing queued up to be read
		103	tcflush(_serialDescriptor, TCIOFLUSH);
		104
102	// this disables streaming so there's no garbage data on reads	105	// this disables streaming so there's no garbage data on reads
103	write(_serialDescriptor, "SD\n", 3);	106	write(_serialDescriptor, "SD\n", 3);
104	char result[4];	107	char result[4];