Description-
Returns space unused in receive buffer.
Syntax-
count = SpaceInReceiveBuffer(port);
On Entry-
int port;
Port previously opened with InitializePort() or OpenComPort().
On Exit-
int count;
Space available in the receive buffer.
else
-1 If port was not initialize.
See Also-
BytesInReceiveBuffer()
ReceiveBufferSize()
IsReceiveBufferEmpty()
Example-
#include “comm.h”
int count;
int port=0;
if ((count = SpaceInReceiveBuffer(port)) == -1)
{
printf(“Port was not initialized\n”);
/* Take remedial action */
}
else
printf(“Number of bytes =>%d\n”,count);