我正在尝试通过Java代码使用Vector XL Driver Library（vxlapi64.dll）。我创建了一个JNA项目来读取vxlapi64.dll和映射的数据类型，但是输出为该结构的元素生成了错误的值。
C代码结构：
typedef struct s_xl_channel_config {
char name [XL_MAX_LENGTH + 1];
unsigned char hwType;
unsigned char hwIndex;
unsigned char hwChannel;
unsigned short transceiverType;
unsigned short transceiverState;
unsigned short configError;
unsigned char channelIndex;
XLuint64 channelMask;
unsigned int channelCapabilities;
unsigned int channelBusCapabilities;
// Channel
unsigned char isOnBus;
unsigned int connectedBusType;
XLbusParams busParams;
unsigned int _doNotUse;
unsigned int driverVersion;
unsigned int interfaceVersion;
unsigned int raw_data[10];
unsigned int serialNumber;
unsigned int articleNumber;
char transceiverName [XL_MAX_LENGTH +1]
unsigned int specialCabFlags;
unsigned int dominantTimeout;
unsigned char dominantRecessiveDelay;
unsigned char recessiveDominantDelay;
unsigned char connectionInfo;
unsigned char currentlyAvailableTimestamps;
unsigned short minimalSupplyVoltage;
unsigned short maximalSupplyVoltage;
unsigned int maximalBaudrate;
unsigned char fpgaCoreCapabilities;
unsigned char specialDeviceStatus;
unsigned short channelBusActiveCapabilities; s)
unsigned short breakOffset;
unsigned short delimiterOffset;
unsigned int reserved[3];
} XL_CHANNEL_CONFIG;
Java映射结构：
public static class XLchannelConfig extends Structure{
public byte[] name = new byte[XL_MAX_LENGTH + 1];
public byte hwType;
public byte hwIndex;
public byte hwChannel;
public short transceiverType;
public short transceiverState;
public short configError;
public byte channelIndex;
public UnsignedInt channelMask;
public UnsignedInt channelCapabilities;
public UnsignedInt channelBusCapabilities;
public byte isOnBus;
public UnsignedInt connectedBusType;
public XLbusParams busParams;
public UnsignedInt _doNotUse;
public UnsignedInt driverVersion;
public UnsignedInt interfaceVersion;
public UnsignedInt[] raw_data = new UnsignedInt[10];
public UnsignedInt serialNumber;
public UnsignedInt articleNumber;
public byte[] transceiverName = new byte[XL_MAX_LENGTH +1];
public UnsignedInt specialCabFlags;
public UnsignedInt dominantTimeout;
public byte dominantRecessiveDelay;
public byte recessiveDominantDelay;
public byte connectionInfo;
public byte currentlyAvailableTimestamps;
public short minimalSupplyVoltage;
public short maximalSupplyVoltage;
public UnsignedInt maximalBaudrate;
public byte fpgaCoreCapabilities;
public byte specialDeviceStatus;
public short channelBusActiveCapabilities;
public short breakOffset;
public short delimiterOffset;
public UnsignedInt[] reserved = new UnsignedInt[3];
@Override
protected List getFieldOrder() {
return Arrays.asList(
"name",
"hwType",
"hwIndex",
"hwChannel",
"transceiverType",
"transceiverState",
"configError",
"channelIndex",
"channelMask",
"channelCapabilities",
"channelBusCapabilities",
"isOnBus",
"connectedBusType",
"busParams",
"_doNotUse",
"driverVersion",
"interfaceVersion",
"raw_data",
"serialNumber",
"articleNumber",
"transceiverName",
"specialCabFlags",
"dominantTimeout",
"dominantRecessiveDelay",
"recessiveDominantDelay",
"connectionInfo",
"currentlyAvailableTimestamps",
"minimalSupplyVoltage",
"maximalSupplyVoltage",
"maximalBaudrate",
"fpgaCoreCapabilities",
"specialDeviceStatus",
"channelBusActiveCapabilities",
"breakOffset",
"delimiterOffset",
"reserved");
}
public XLchannelConfig() {
super();
read();
}
@Override
protected void allocateMemory() {
super.allocateMemory();
}
public XLchannelConfig(Pointer pointer) {
super();
useMemory(pointer);
read();
}
public static class ByReference extends XLchannelConfig implements Structure.ByReference {
public ByReference(){
super();
read();
}
public ByReference(Pointer p) { super(p);
ensureAllocated();
useMemory(p);
byte[] buffer = new byte[size()];
this.getPointer().read(0, buffer, 0, buffer.length);
getPointer().write(0, buffer, 0, buffer.length);
read();}
};
public static class ByValue extends XLchannelConfig implements Structure.ByValue {
public ByValue() {
super();
read();
}
public ByValue(Pointer p) { super(p);
useMemory(p);
read();}
};
}
public class UnsignedInt extends IntegerType {
public UnsignedInt() {
super(4, false);
}
}
我有示例C代码，它读取dll，并且得到正确的值，但是使用JNA，它没有给出正确的输出值。结构映射正确还是我错过了任何事情？
使用c代码的实际输出：
以上映射的输出：
Ch：00，CM：0x000，虚拟通道2无驾驶室！
Daniel Widdis如建议的建议，如果我可以将UnsignedInt更改为int并将XLuint64更改为长输出，如下所示>]
[2通道硬件配置-
我正在尝试使用Java代码使用Vector XL驱动程序库（vxlapi64.dll）。我创建了一个JNA项目来读取vxlapi64.dll和映射的数据类型，但是输出为...
正如我在注释线程中指出的那样，您不正确地为8字节结构元素UnsignedInt使用了4字节映射（XLuint64）。应将其替换为8字节的变量（例如long）。尽管从技术上讲是正确的，但为每个无符号int值创建一个对象会产生大量开销，因此通常最好简化结构并仅在其中放置int结构元素，并处理无符号性。解释价值时。