Group Serial Port

Sets a BREAK state on the send line for a specified period of time.

Com_Break( <nComPortNum>, [<nMilliSeconds>] ; // Default: 100 ) --> lSuccess

Closes the receive queue of a COM port.

Com_Close( <nComPortNum>, <nComFlush> ; // Default: 0 ) --> lClosed

Returns the number of bytes in the receive queue.

Com_Count( <nComPortNum> ) --> nBytesToBeReceived

Performs a Cyclic Redundancy Check for strings.

Com_CRC( <cString>, [<nStart>], ; // Default: 0 [<nPolynome>] ; // Default: 69665 ) --> nCRCvalue

Returns Clear To Send status.

Com_CTS( <nComPortNum> ) --> lCTS_Is_Active

Returns Data Carrier Detect state.

Com_DCD( <nComPortNum> ) --> lDCD_Is_Active

Function Com_DosCon() is not supported.

Returns Data Set Ready state.

Com_DSR( <nComPortNum> ) --> lDSR_Is_Active

Sets or retrieves the Data Terminal Ready state.

Com_DTR( <nComPortNum>, [<lNewDTRState>] ) --> lOld_DTR_State

Defines character for error replacement.

Com_ErrChr( <nComPortNum>, ; // Type: N [<nErrorChar|cErrorChar>] ; // Type: NC Default: "" ) --> lSuccess

Waits for an event or a character to arrive at a COM port

Com_Event( <nComPortNum> ; // Type: N ) --> nCode

Flush receive queue of a COM port.

Com_Flush( <nComPortNum> ) --> lFlushed

Function Com_GetIO() is not supported.

Function Com_GetIRQ() is not supported.

Toggles automatic hardware handshake.

Com_Hard( <nComPortNum>, [<lNewHandShake>], [<lDTR_DSR>] ) --> lOldHandshake

Initializes a COM port

Com_Init( <nComPortNum>, [<nBaudrate>], ; // Default: 300 [<cParity>], ; // Default: "N" [<nBitLength>], ; // Default: 8 [<nStopBits>] ; // Default: 1 ) --> lInitialized

Function Com_Key() is not supported.

Reads the Line Status Register.

Com_LSR( <nComPortNum> ) --> nLSR

Sets or retrieves the Modem Control Register.

Com_MCR( <nComPortNum>, [<nMCR>] ) --> nMCR

Reads the Modem Status Register.

Com_MSR( <nComPortNum> ) --> nMSR

Available number of RS-232 devices.

Com_Num() --> nMaxCom

Opens a COM port.

Com_Open( <nComPortNum>, <ignored>, <ignored>, <ignored>, [<nOpenMode>] ; // Default: 0 ) --> lIsOpen

Reads characters from the specified COM port.

Com_Read( <nComPortNum>, [<nBytesToRead>], <ignored> ) --> cString

Controls the Read Timeout processing characteristics of the device driver.

Com_ReadMode( <nComPortNum>, <nMode>, [<nTimeout>] ; // Default: 100 ) --> lSuccess

Function Com_Remote() is not supported

Retrieves modem Ring Indicator.

Com_Ring( <nComPortNum> ) --> lRing_Is_Active

Sets or retrieves Request To Send status.

Com_RTS( <nComPortNum>, [<lNewRTSState>] ) --> lNewRTS

Retrieves the number of bytes stored in the transmit buffer.

Com_SCount( <nComPortNum> ) --> nBytesToSend

Writes data to the specified COM port

Com_Send( <nComPortNum>, ; // Type: N <cString|nASCIICode> ; // Type: CN ) --> nBytesNotSent

Controls Write Timeout characteristics of the physical device driver.

Com_SendMode( <nComPortNum>, <nMode>, [<nTimeout>] ; // Default: 100 ) -->

Function Com_SetIO() is not supported.

Function Com_SetIRQ() is not supported.

Flushes the transmit queue of a specific COM port.

Com_SFlush( <nComPortNum> ) --> lFlushed

Function Com_SKey() is not supported.

Retrieves current state of sending (transmit status).

Com_SMode( <nComPortNum> ) --> nSendMode

Toggles automatic software handshake (XON/XOFF).

Com_Soft( <nComPortNum>, [<lNewHandShake>], [<cXONChar>], ; // Default: Chr(17) [<cXOFFChar>] ; // Default: Chr(19) ) --> lOldHandshake

Checks whether an XOFF signal was received.

Com_Soft_R( <nComPortNum>, [<lStartTransmitter>] ) --> lXOFFflag

Checks whether transmitter is about to send an XON signal.

Com_Soft_S( <nComPortNum> ) --> lXOFFflag

Builds a block for the XModem protocol.

XMoBlock( <cString>, <nBlocknumber>, [<lCRC>], ; // Default: .F. [<nMode>] ; // Default: 1 ) --> cXModemBlock

Checks whether the received block is a valid XModem block.

XMoCheck( <cBlock>, [<lCRC>] ; // Default: .F. ) --> nBlockNumber

Encodes a string according to CCITT specifications.

ZeroInsert( <cBlock> ) --> cEncodedString

Decodes a CCITT encoded string.

ZeroRemove( <cBlock> ) --> cDecodedString