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The following table shows the Serial Communications functions with a description of the purpose of each.
| Programming element | Description |
|---|---|
| ClearCommBreak | This function restores character transmission for a specified communications device and places the transmission line in a nonbreak state. |
| ClearCommError | This function retrieves information about a communications error and reports the current status of a communications device. |
| EscapeCommFunction | This function directs a specified communication device to perform an extended function. |
| GetCommMask | This function retrieves the event mask value for a specified communication device. |
| GetCommModemStatus | This function retrieves modem control-register values. |
| GetCommProperties | This function fills a buffer with communication properties data for a specified communication device. |
| GetCommState | This function fills in a device-control block with the current control settings for a specified communication device. |
| GetCommTimeouts | This function retrieves the time-out parameters for all read and write operations on a specified communication device. |
| PurgeComm | This function can discard all characters from the output or input buffer of a specified communications resource. |
| SetCommBreak | This function suspends character transmission for a specified communications device and places the transmission line in a break state until the ClearCommBreak function is called. |
| SetCommMask | This function specifies a set of events to be monitored for a communications device. |
| SetCommState | This function configures a communications device according to the specifications in a device-control block. |
| SetCommTimeouts | This function sets the time-out parameters for all read and write operations on a specified communications device. |
| SetupComm | This function initializes the communications parameters for a specified communications device. |
| TransmitCommChar | This function transmits a specified character ahead of any pending data in the output buffer of the specified communications device. |
| WaitCommEvent | This function waits for an event to occur for a specified communications device. |
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