Call Descriptions

• ComAcquire Attempts to acquire exclusive port ownership.
• ComAcqReceiveBytes One-step ComAcquire and ComReceiveBytes call.
• ComAcqSendBytes One-step ComAcquire and ComSendBytes call.
• ComBreak Sends a line break signal to the specified port.
• ComClose Closes the port.
• ComForceXoff Forces XOFF state.
• ComForceXon Forces XON state.
• ComGetParameters Gets the HP palmtop line settings.
• ComHayesCommand Sends Hayes command.
• ComMdmClr Clears (de-asserts) modem lines.
• ComMdmSet Sets (asserts) modem lines.
• ComMdmStatus Gets UART's MCR and MSR registers.
• ComOpen Opens access to the communication port.
• ComPower Allows the application to "manually" turn the communications port power on or off.
• ComQryErr Queries line errors.
• ComQryRxQue Queries the receive queue.
• ComQryTxQue Queries the transmit queue.
• ComReceiveBytes Copies received data to application.
• ComRelease Releases exclusive access to a previously acquired communication port.
• ComReset Resets line, buffers, and modem.
• ComSendBytes Copies application data to transmit buffers.
• ComSetParameters Sets the HP palmtop line parameters.
• ComXmitting Tests for transmit active on port.