Platform | Win32 |
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Purpose |
To set the communication port to echo back to the sending device. |
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Syntax |
INTEGER (KIND=3) SETECHOONREADCOMM@(PORTNUM,STATE) |
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Description |
When communicating with a serial device such as a terminal, it is often necessary to return the data to the sender. In the case of a terminal the data will be transmitted from its keyboard to the host computer. SETECHOONREADCOMM@ is used to enable (STATE = 1) or disable (STATE = 0) the echoing of data. Data that is echoed back to a terminal will be displayed on its VDU. PORTNUM is a valid port number in the range 1 to 4. |
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Return value |
SETECHOONREADCOMM@ returns a positive value if successful or -1 if an error has occurred. |
Notes |
To access this routine you need to provide a definition by, for example, including the file clearwin.ins or by using the MSWIN module. |