; #INDEX# =======================================================================================================================
; Name ..........: CommInterface.au3
; Title .........: Communications Functions of Windows API
; Description ...: Communications Functions of Windows API calls that have been translated to AutoIt functions.
; Version Date ..: 2014-04-07
; AutoIt Version : 3.3.8.1
; Link ..........: http://msdn.microsoft.com/en-us/library/aa363194(v=vs.85).aspx
; Tag(s) ........: RS-232, serial port, COM port
; Author(s) .....:
; Dll(s) ........: kernel32.dll
; Error handling : Everytime @extended is set, it is filled with @ScriptLineNumber of the error.
; ===============================================================================================================================
#include-once
#include "CommAPIHelper.au3"
#include "CommUtilities.au3"
#include <WinAPI.au3>
#NoAutoIt3Execute
#AutoIt3Wrapper_Au3Check_Parameters=-q -d -w 1 -w 2 -w 3 -w- 4 -w 5 -w 6 -w- 7
; #FUNCTION# ====================================================================================================================
; Name ..........: _CommAPI_ClosePort
; Description ...: CLoses a specified communications device.
; Syntax ........: _CommAPI_ClosePort(Const $hFile)
; Parameters ....: $hFile - [in] A handle to the communications device.
; Return values .: Success - True
; Failure - False
; @error - 1 unable to use the DLL file
; 2 unknown "return type"
; 3 "function" not found in the DLL file
; 4 bad number of parameters
; 5 bad parameter
; -1 function fails (To get extended error information, call _WinAPI_GetLastError or _WinAPI_GetLastErrorMessage)
; Author ........:
; Modified ......:
; Remarks .......:
; Related .......: _CommAPI_OpenPort
; Link ..........:
; Example .......: No
; ===============================================================================================================================
Func _CommAPI_ClosePort(Const $hFile)
Local $fSuccess = _WinAPI_CloseHandle($hFile)
If @error Then Return SetError(@error, 0, False)
If Not $fSuccess Then Return SetError(-1, @ScriptLineNumber, False)
Return $fSuccess
EndFunc ;==>_CommAPI_ClosePort
; #FUNCTION# ====================================================================================================================
; Name ..........: _CommAPI_OpenCOMPort
; Description ...: Opens a COM Port.
; Syntax ........: _CommAPI_OpenCOMPort(Const $iPort[, $iBaudRate = Default[, $iParity = Default[, $iByteSize = Default[,
; $iStopBits = Default]]]])
; Parameters ....: $iPort - [in] A port number.
; $iBaudRate - [in] The baud rate at which the communications device operates.
; $iParity - [in] The parity scheme to be used.
; $iByteSize - [in] Specifies the number of data bits in a character.
; $iStopBits - [in] Specifies the number of stop bits that define the end of a character: 1, 1.5, or 2.
; Return values .: Success - Open handle to a specified communications device
; Failure - 0
; @error - 1 unable to use the DLL file
; 2 unknown "return type"
; 3 "function" not found in the DLL file
; 4 bad number of parameters
; 5 bad parameter
; 11 struct not a correct struct returned by DllStructCreate
; 12 element value out of range
; 13 index would be outside of the struct
; 14 element data type is unknown
; 15 index <= 0
; -1 function fails (To get extended error information, call _WinAPI_GetLastError or _WinAPI_GetLastErrorMessage)
; Author ........:
; Modified ......:
; Remarks .......:
; Related .......: _CommAPI_OpenPort, _CommAPI_ClosePort, _CommAPI_CreateModeString
; Link ..........:
; Example .......: No
; ===============================================================================================================================
Func _CommAPI_OpenCOMPort(Const $iPort, Const $iBaudRate = Default, Const $iParity = Default, Const $iByteSize = Default, Const $iStopBits = Default)
Local $sMode = _CommAPI_CreateModeString($iPort, $iBaudRate, $iParity, $iByteSize, $iStopBits)
Local $hFile = _CommAPI_OpenPort($sMode)
If @error Then Return SetError(@error, @extended, 0)
Return $hFile
EndFunc ;==>_CommAPI_OpenCOMPort
; #FUNCTION# ====================================================================================================================
; Name ..........: _CommAPI_OpenPort
; Description ...: Opens a specified communications device.
; Syntax ........: _CommAPI_OpenPort(Const $sMode)
; Parameters ....: $sMode - [in] A device-definition string.
; Return values .: Success - Open handle to a specified communications device
; Failure - 0
; @error - 1 unable to use the DLL file
; 2 unknown "return type"
; 3 "function" not found in the DLL file
; 4 bad number of parameters
; 5 bad parameter
; 11 struct not a correct struct returned by DllStructCreate
; 12 element value out of range
; 13 index would be outside of the struct
; 14 element data type is unknown
; 15 index <= 0
; -1 function fails (To get extended error information, call _WinAPI_GetLastError or _WinAPI_GetLastErrorMessage)
; Author ........:
; Modified ......:
; Remarks .......:
; Related .......: _CommAPI_OpenCOMPort, _CommAPI_ClosePort, _CommAPI_SetCommState
; Link ..........: http://msdn.microsoft.com/en-us/library/aa365430(v=vs.85).aspx
; Example .......: No
; ===============================================================================================================================
Func _CommAPI_OpenPort(Const $sMode)
Local $sFileName = "\\.\" & StringLeft($sMode, StringInStr($sMode, ":") - 1)
Local $hFile = _WinAPI_CreateFile($sFileName, 3, 6)
If @error Then Return SetError(@error, @ScriptLineNumber, 0)
If $hFile <= 0 Then Return SetError(-1, @ScriptLineNumber, 0)
Local $tDCB = DllStructCreate($tagDCB)
Local $tCommTimeouts = DllStructCreate($tagCOMMTIMEOUTS)
_CommAPI_BuildCommDCB($sMode, $tDCB)
If @error Then Return SetError(@error, @extended, 0)
_CommAPI_SetCommTimeoutsElement($tCommTimeouts, "ReadTotalTimeoutMultiplier", 1)
If @error Then Return SetError(@error, @extended, 0)
_CommAPI_SetCommTimeoutsElement($tCommTimeouts, "WriteTotalTimeoutMultiplier", 1)
If @error Then Return SetError(@error, @extended, 0)
If Not _CommAPI_SetCommState($hFile, $tDCB) Then Return SetError(@error, @extended, 0)
If Not _CommAPI_SetCommTimeouts($hFile, $tCommTimeouts) Then Return SetError(@error, @extended, 0)
Return $hFile
EndFunc ;==>_CommAPI_OpenPort
; #FUNCTION# ====================================================================================================================
; Name ..........: _CommAPI_ReceiveBinary
; Description ...: Receives data (RxD/RX/RD) to a specified communications device.
; Syntax ........: _CommAPI_ReceiveBinary(Const $hFile[, $iTimeout = 1[, $iMaxLength = 0[, $vSeparator = ""]]])
; Parameters ....: $hFile - [in] A handle to the communications device.
; $iTimeout - [in] An integer value for total read timeout in milliseconds.
; Is activated only by positive values.
; $iMaxLength - [in] An integer value for maximum length of result.
; Is activated only by positive values.
; $vSeparator - [in] A value which is used as a separator.
; Is activated only by non-empty values.
; Return values .: Success - Received binary data
; Failure - Received binary data
; @error - 1 unable to use the DLL file
; 2 unknown "return type"
; 3 "function" not found in the DLL file
; 4 bad number of parameters
; 5 bad parameter
; -1 function fails (To get extended error information, call _WinAPI_GetLastError or _WinAPI_GetLastErrorMessage)
; -2 timeout
; Author ........:
; Modified ......:
; Remarks .......:
; Related .......: _CommAPI_ReceiveString, _CommAPI_TransmitData
; Link ..........: http://msdn.microsoft.com/en-us/library/aa365467(v=vs.85).aspx
; Example .......: No
; ===============================================================================================================================
Func _CommAPI_ReceiveBinary(Const $hFile, Const $iTimeout = 1, Const $iMaxLength = 0, Const $vSeparator = "")
Local $bSeparator = Binary($vSeparator)
Local $iSepLength = BinaryLen($bSeparator)
Local $fSuccess = False
Local $tBuffer = DllStructCreate("BYTE")
Local $pBuffer = DllStructGetPtr($tBuffer)
Local $iRead = 0
Local $vResult = Binary("")
Local $iResLength = 0
Local $hTimer = TimerInit()
While True
$fSuccess = _WinAPI_ReadFile($hFile, $pBuffer, 1, $iRead)
If @error Then Return SetError(@error, @ScriptLineNumber, $vResult)
If Not $fSuccess Then Return SetError(-1, @ScriptLineNumber, $vResult)
If $iRead Then
$vResult &= BinaryMid(Binary(DllStructGetData($tBuffer, 1)), 1, 1)
$iResLength = BinaryLen($vResult)
If $iResLength = $iMaxLength And $iMaxLength > 0 Then Return $vResult
If $bSeparator = BinaryMid($vResult, 1 + $iResLength - $iSepLength) Then Return BinaryMid($vResult, 1, $iResLength - $iSepLength)
Else
If $vResult And Not $iSepLength Then Return $vResult
If $iTimeout > 0 And $iTimeout < TimerDiff($hTimer) Then Return SetError(-2, @ScriptLineNumber, $vResult)
EndIf
WEnd
Return $vResult
EndFunc ;==>_CommAPI_ReceiveBinary
; #FUNCTION# ====================================================================================================================
; Name ..........: _CommAPI_ReceiveString
; Description ...: Receives data (RxD/RX/RD) to a specified communications device.
; Syntax ........: _CommAPI_ReceiveString(Const $hFile[, $iTimeout = 1[, $iMaxLength = 0[, $sSeparator = ""]]])
; Parameters ....: $hFile - [in] A handle to the communications device.
; $iTimeout - [in] An integer value for total read timeout in milliseconds.
; Is activated only by positive values.
; $iMaxLength - [in] An integer value for maximum length of result.
; Is activated only by positive values.
; $sSeparator - [in] A value which is used as a separator.
; Is activated only by non-empty values.
; $iFlag - [in] Flag for function BinaryToString().
; Return values .: Success - Received string
; Failure - Received string
; Received binary data in case of @error = -3
; @error - 1 unable to use the DLL file
; 2 unknown "return type"
; 3 "function" not found in the DLL file
; 4 bad number of parameters
; 5 bad parameter
; -1 function fails (To get extended error information, call _WinAPI_GetLastError or _WinAPI_GetLastErrorMessage)
; -2 timeout
; -3 error in BinaryToString
; Author ........:
; Modified ......:
; Remarks .......:
; Related .......: _CommAPI_ReceiveBinary, _CommAPI_TransmitData
; Link ..........: http://msdn.microsoft.com/en-us/library/aa365467(v=vs.85).aspx
; Example .......: No
; ===============================================================================================================================
Func _CommAPI_ReceiveString(Const $hFile, Const $iTimeout = 1, Const $iMaxLength = 0, Const $sSeparator = "", Const $iFlag = 1)
Local $bResult = _CommAPI_ReceiveBinary($hFile, $iTimeout, $iMaxLength, StringToBinary($sSeparator, $iFlag))
Local $iError = @error
Local $iExtended = @extended
Local $sResult = ""
If $bResult Then
$sResult = BinaryToString($bResult, $iFlag)
If @error Then SetError(-3, @ScriptLineNumber, $bResult)
EndIf
Return SetError($iError, $iExtended, $sResult)
EndFunc ;==>_CommAPI_ReceiveString
; #FUNCTION# ====================================================================================================================
; Name ..........: _CommAPI_TransmitBinary
; Description ...: Transmits data (TxD/TX/TD) to a specified communications device.
; Syntax ........: _CommAPI_TransmitData(Const $hFile, Const $sData)
; Parameters ....: $hFile - [in] A handle to the communications device.
; $vData - [in] A binary value to transmit.
; Return values .: Success - Number of written bytes
; Failure - Number of written bytes
; @error - 1 unable to use the DLL file
; 2 unknown "return type"
; 3 "function" not found in the DLL file
; 4 bad number of parameters
; 5 bad parameter
; -1 function fails (To get extended error information, call _WinAPI_GetLastError or _WinAPI_GetLastErrorMessage)
; Author ........:
; Modified ......:
; Remarks .......:
; Related .......: _CommAPI_TransmitString, _CommAPI_ReceiveBinary
; Link ..........: http://msdn.microsoft.com/en-us/library/aa365747(v=vs.85).aspx
; Example .......: No
; ===============================================================================================================================
Func _CommAPI_TransmitBinary(Const $hFile, Const $vData)
Local $bData = Binary($vData)
Local $iLength = BinaryLen($vData)
Local $iWritten = 0
Local $tBuffer = DllStructCreate("BYTE[" & $iLength & "]")
DllStructSetData($tBuffer, 1, $bData)
Local $fSuccess = _WinAPI_WriteFile($hFile, DllStructGetPtr($tBuffer), $iLength, $iWritten)
If @error Then Return SetError(@error, @ScriptLineNumber, 0)
If Not $fSuccess Then Return SetError(-1, @ScriptLineNumber, $iWritten)
Return $iWritten
EndFunc ;==>_CommAPI_TransmitBinary
; #FUNCTION# ====================================================================================================================
; Name ..........: _CommAPI_TransmitString
; Description ...: Transmits data (TxD/TX/TD) to a specified communications device.
; Syntax ........: _CommAPI_TransmitData(Const $hFile, Const $sData)
; Parameters ....: $hFile - [in] A handle to the communications device.
; $sData - [in] A string value to transmit.
; $iFlag - [in] Flag for function StringToBinary().
; Return values .: Success - Number of written bytes
; Failure - Number of written bytes
; @error - 1 unable to use the DLL file
; 2 unknown "return type"
; 3 "function" not found in the DLL file
; 4 bad number of parameters
; 5 bad parameter
; -1 function fails (To get extended error information, call _WinAPI_GetLastError or _WinAPI_GetLastErrorMessage)
; Author ........:
; Modified ......:
; Remarks .......:
; Related .......: _CommAPI_TransmitBinary, _CommAPI_ReceiveString
; Link ..........: http://msdn.microsoft.com/en-us/library/aa365747(v=vs.85).aspx
; Example .......: No
; ===============================================================================================================================
Func _CommAPI_TransmitString(Const $hFile, Const $sData, Const $iFlag = 1)
Local $iWritten = _CommAPI_TransmitBinary($hFile, StringToBinary($sData, $iFlag))
If @error Then Return SetError(@error, @extended, $iWritten)
Return $iWritten
EndFunc