Description-
Returns the next character from receive buffer non-destructively. This function will wait for up to the amount of time set by SetTimeout() before returning failure if a byte is not present.
Syntax-
byte = PeekChar(port);
On Entry-
int port;
Port previously opened with InitializePort() or OpenComPort().
On Exit-
int byte;
The returned byte.
else
-1 If port not initialized or no byte to be read.
See Also-
GetByte()
GetPacket()
GetString()
Example-
#include "comm.h"
int port=0; int byte;
if ((byte = PeekChar(port)) == -1)
{
printf("No bytes to read\n");
}