내가 JNA에 초보자와 오전 포인터 매핑에 대해JNA : 포인터의 배열에 구조체 : 유효하지 않은 포인터
기본 방법에 문제에 직면 :
- EXTERNC T_PDU_ERROR PDUStartComPrimitive (UNUM32 흐 모드, UNUM32 hCLL, T_PDU_COPT CopType, UNUM32 CoPDataSize, UNUM8
pCopData *, * PDU_COP_CTRL_DATA pCopCtrlData 무효 pCopTag *, * UNUM32 phCoP)
JNA 방법 :
-
INT PDUStartComPrimitive (INT 흐 모드, INT hCLL, INT의 CoPType,
CoPDataSize 바이트 [] pCoPData, PDU_COP_CTRL_DATA.ByReference에서 INT
pCopCtrlData 포인터 pCoPTag, IntByReference phCoP) ;
기본 구조 (들) :
typedef struct{
UNUM32 Time;
SNUM32 NumSendCycles;
SNUM32 NumReceiveCycles;
UNUM32 TempParamUpdate;
PDU_FLAG_DATA TxFlag;
UNUM32 NumPossibleExpectedResponses;
PDU_EXP_RESP_DATA *pExpectedResponseArray;
}PDU_COP_CTRL_DATA;
typedef struct{
UNUM32 ResponseType;
UNUM32 AcceptanceId;
UNUM32 NumMaskPatternBytes;
UNUM8 *pMaskData;
UNUM8 *pPatternData;
UNUM32 NumUniqueRespIds;
UNUM32 *pUniqueRespIds;
}PDU_EXP_RESP_DATA;
JNA 매핑 :
public class PDU_COP_CTRL_DATA extends Structure{
public int time;
public int numSendCycles;
public int numReceiveCycles;
public int tempParamUpdate;
public PDU_FLAG_DATA txFlag;
public int numPossibleExpectedResponses;
public Pointer pExpectedResponseArray;
public static class ByReference extends PDU_COP_CTRL_DATA implements Structure.ByReference {
};
}
public class PDU_EXP_RESP_DATA extends Structure{
public int responseType;
public int acceptanceId;
public int numMaskPatternBytes;
public byte[] pMaskData= new byte[1];
public byte[] pPatternData = new byte[1];
public int numUniqueRespIds;
/* Array containing unique response identifiers. Only responses with a unique response identifier found in this array are considered, when trying to match them to this expected response. */
public Pointer pUniqueRespIds;
public static class ByReference extends PDU_EXP_RESP_DATA implements Structure.ByReference {
};
}
나는 자바에서 PDUStartComPrimitive 방법을 실행하고 underlyng DLL 로그 I 살펴있을 때 해당 PDU_COP_CTRL_DATA strucutre 필드를 참조하십시오 * pExpectedResponseArray 잘못된 * PDU_EXP_RESP_DATA 포인터가 나타납니다. 설정에
내 JNA의 코드 PDUStartComPrimitive 실행
byte[] sendata = new byte[requestData.length()/2];
int byteIndex = 0;
for (String byteString : requestData.split(" ")) {
sendata[byteIndex] = Byte.parseByte(byteString, 16);
byteIndex++;
}
/* Setting of the expected responses ends */
PDU_COP_CTRL_DATA.ByReference objCopCtrlData = new PDU_COP_CTRL_DATA.ByReference();
objCopCtrlData.numPossibleExpectedResponses = 1;
objCopCtrlData.numReceiveCycles = 1;
objCopCtrlData.numSendCycles = 1;
objCopCtrlData.tempParamUpdate = 0;
objCopCtrlData.time = 0;
PDU_EXP_RESP_DATA expRespStruct = new PDU_EXP_RESP_DATA();
expRespStruct.acceptanceId = 0;
expRespStruct.numMaskPatternBytes = 1;
expRespStruct.numUniqueRespIds = 0;
expRespStruct.pUniqueRespIds = new Pointer(0);
expRespStruct.responseType = 0;
byte[] mskByte = byte int[] { 0 };
byte[] patternByte = new byte[] { 0 };
expRespStruct.pMaskData = mskByte;
expRespStruct.pPatternData = patternByte;
PDU_EXP_RESP_DATA[] refArr = (PDU_EXP_RESP_DATA[]) expRespStruct.toArray(1);
refArr[0] = expRespStruct;
expRespStruct.autoWrite();
objCopCtrlData.pExpectedResponseArray = expRespStruct.getPointer();
PDU_FLAG_DATA.ByValue objTxFlagData = new PDU_FLAG_DATA.ByValue();
objCopCtrlData.txFlag = objTxFlagData;
String strComAction = "SEND_RECV";
Pointer apiTag = new NativeString(strComAction, true).getPointer();
IntByReference phCop = new IntByReference();
int errorCode = PDUStartComPrimitive(1, 1,0x8004, sendata.length,sendata, objCopCtrlData, apiTag, phCop);
나는이 어쩌면 때문에 잘못된 JNA 매핑의 의심을 가지고있다. 아이디어 나 제안을 도와주세요. 감사합니다