Construct and open a basic_serial_port
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template< typename ExecutionContext> basic_serial_port( ExecutionContext & context, const char * device, typename constraint< is_convertible< ExecutionContext &, execution_context & >::value >::type = 0);
This constructor creates and opens a serial port for the specified device name.
An execution context which provides the I/O executor that the serial port will use, by default, to dispatch handlers for any asynchronous operations performed on the serial port.
The platform-specific device name for this serial port.