How to find the COM port's port address to use in READ_PORT or WRITE_PORT API

  • Thread starter Thread starter Rexlin S
  • Start date Start date
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Rexlin S

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I want to write some data to a serial port from a driver (that does not own the serial port) .

The API s that I will use is

WRITE_PORT_UCHAR(Port, PortVal);

How do I find the Port address of a COM port in a PC/laptop ?

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