Android Question How close the Serial port after sure of all data it´s on the printer?

Hi,

As oriented in many topics I´m using:

Astream.SendAllAndClose and AStream_Terminated event

to close the serial connection, but it´s cutting the print in half sometimes, tryed to apeal to time, but never goes ok, too much time the user get stucked between the prints, too short, cut the print or give all sorts of problems...

There is a way to get the real time when the printer received all data?

Thanks