RETURNS 1 IF THE SERIAL PORT NUMBER X EXISTS, 0 OTHERWISE
ACTION
The function SERIAL_PORT_EXISTS(X) returns 1 if the serial port number X exists, 0 otherwise.
SYNTAX:
Result = SERIAL_PORT_EXISTS(X)
USE ERROR EXAMPLE
rem test if serial port number 1 exists
if serial_port_exists(1)=1
print "serial port n°1 exists"
else
print "serial port n°1 does not exist"
end_if
SERIAL_PORT_EXISTS()
SERIAL_PORT_EXISTS(X)
SEE ALSO
SERIAL
SERIAL_PORT
SERIAL_BAUDRATE
SERIAL_STOPBITS
SERIAL_DATABITS
SERIAL_PARITY
SERIAL_OPEN
SERIAL_CLOSE
SERIAL_WRITE
ON_RECEIVE
SERIAL_READ$()