This tutorial describes how to send and receive data with the Serial Communications Server.
This tutorial follows the tutorial How to Open a Port: Tutorial How to Open a Port: Tutorial .
If the aTimeOut parameter was set with the RComm::Write() function then the request completes with KErrTimedOut if the Descriptor was not filled during the aTimeOut time.
If the write request is in progress, the write request can be cancelled by calling WriteCancel() .
A port can be configured to automatically terminate data transfer requests early when various error conditions occur.
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