Description
Indicates if the specified Serial port is ready.
On the boards with native USB, if (Serial) (or if(SerialUSB)
on the Due) indicates whether or not the USB CDC serial connection is
open. For all other boards, and the non-USB CDC ports, this will always
return true.
This was introduced in Arduino IDE 1.0.1.
Syntax
if( Serial )
Parameters
None
Returns
Returns true if the specified serial port is available. This will
only return false if querying the Leonardo’s USB CDC serial connection
before it is ready. Data type: bool.
Example Code
// Initialize serial and wait for port to open:
void
setup()
{
Serial.begin( 9600 );
while( !Serial )
{
; // wait for serial port to connect. Needed for native USB
}
}
/*F********************************************************************
*
**********************************************************************/
void
loop()
{
//proceed normally
}