2023年1月9日 17:45:34go评论90阅读模式

英文:

How to debug reading a Catman binary file in C++, program reads incorrectly at a specific point

问题

我理解你的请求，以下是你提供的代码的翻译部分：

struct catman_VB_DB_CHANHEADER
{
    double TZero;
    double dt;
    int sensorType;
    int supplyVoltage;
    int filtChar;
    int filtFreq;
    float tareVal;
    float zeroVal;
    float measRange;
    float inChar[4];
    char serNo[32];
    char physUnit[8];
    char nativeUnit[8];
    int slot;
    int subSlot;
    int ampType;
    int APType;
    float kFactor;
    float bFactor;
    int measSig;
    int ampInput;
    int HPFilt;
    byte OLImport;
};

struct catmanGlobalSection
{
    short fileID;
    long dataOffset;
    short fileCommentLength;
    short additionalDataOffsetNoOfBytes;
    short reserveStringNoOfBytes[32];
    short noOfChannels;
    long maxChannelLength;
    long ChannelLengthOffset[16];
    long reductionFactor;
};

struct catmanChannelHeaderSection
{
    short channelLocation;
    long channelLength;
    short channelNameLength;
    short unitLength;
    short channelCommentLength;
    short format;
    short dataWidth;
    double dateAndTimeOfMeasurement;
    long extendedChannelHeaderSize;
    catman_VB_DB_CHANHEADER extendedChannelHeader;
};

struct catmanFormat
{
    catmanGlobalSection globalSection;
    catmanChannelHeaderSection ChannelHeaderSection[16];
};

static catmanFormat catmanData;

std::ifstream rf("FTP Folder/Recorder 14_2022_12_21_06_24_00.bin", std::ios::in | std::ios::binary);

rf.read((char*)&catmanData.globalSection.fileID, sizeof(catmanData.globalSection.fileID));
rf.read((char*)&catmanData.globalSection.dataOffset, sizeof(catmanData.globalSection.dataOffset));
if (shortVersion)
    rf.ignore(catmanData.globalSection.dataOffset);
else
{
    rf.read((char*)&catmanData.globalSection.fileCommentLength, sizeof(catmanData.globalSection.fileCommentLength));
    rf.ignore(catmanData.globalSection.fileCommentLength);
    /* These lines misaligns the buffer... They should be included according to Catman's binary format document. Leave them commented for now.
    rf.read((char*)&catmanData.globalSection.additionalDataOffsetNoOfBytes, sizeof(catmanData.globalSection.additionalDataOffsetNoOfBytes));
    rf.ignore(catmanData.globalSection.additionalDataOffsetNoOfBytes);
    */
    for (int i = 0; i < 32; i++)
    {
        rf.read((char*)&catmanData.globalSection.reserveStringNoOfBytes[i], sizeof(catmanData.globalSection.reserveStringNoOfBytes[i]));
        rf.ignore(catmanData.globalSection.reserveStringNoOfBytes[i]);
    }
}
rf.read((char*)&catmanData.globalSection.noOfChannels, sizeof(catmanData.globalSection.noOfChannels));
rf.read((char*)&catmanData.globalSection.maxChannelLength, sizeof(catmanData.globalSection.maxChannelLength));
for (int i = 0; i < catmanData.globalSection.noOfChannels; i++)
{
    rf.read((char*)&catmanData.globalSection.ChannelLengthOffset[i], sizeof(catmanData.globalSection.ChannelLengthOffset[i]));
}
rf.read((char*)&catmanData.globalSection.reductionFactor, sizeof(catmanData.globalSection.reductionFactor));

for (int i = 0; i < catmanData.globalSection.noOfChannels; i++)
{
    rf.read((char*)&catmanData.ChannelHeaderSection[i].channelLocation, sizeof(catmanData.ChannelHeaderSection[i].channelLocation));
    rf.read((char*)&catmanData.ChannelHeaderSection[i].channelLength, sizeof(catmanData.ChannelHeaderSection[i].channelLength));
    rf.read((char*)&catmanData.ChannelHeaderSection[i].channelNameLength, sizeof(catmanData.ChannelHeaderSection[i].channelNameLength));
    rf.ignore(catmanData.ChannelHeaderSection[i].channelNameLength);
    rf.read((char*)&catmanData.ChannelHeaderSection[i].unitLength, sizeof(catmanData.ChannelHeaderSection[i].unitLength));
    rf.ignore(catmanData.ChannelHeaderSection[i].unitLength);
    rf.read((char*)&catmanData.ChannelHeaderSection[i].channelCommentLength, sizeof(catmanData.ChannelHeaderSection[i].channelCommentLength));
    rf.ignore(catmanData.ChannelHeaderSection[i].channelCommentLength);
    rf.read((char*)&catmanData.ChannelHeaderSection[i].format, sizeof(catmanData.ChannelHeaderSection[i].format));
    rf.read((char*)&catmanData.ChannelHeaderSection[i].dataWidth, sizeof(catmanData.ChannelHeaderSection[i].dataWidth));
    rf.read((char*)&catmanData.ChannelHeaderSection[i].dateAndTimeOfMeasurement, sizeof(catmanData.ChannelHeaderSection[i].dateAndTimeOfMeasurement));
    rf.read((char*)&catmanData.ChannelHeaderSection[i].extendedChannelHeaderSize, sizeof(catmanData.ChannelHeaderSection[i].extendedChannelHeaderSize));

    rf.read((char*)&catmanData.ChannelHeaderSection[i].extendedChannelHeader.TZero, sizeof(catmanData.ChannelHeaderSection[i].extendedChannelHeader.TZero));
    rf.read((char*)&catmanData.ChannelHeaderSection[i].extendedChannelHeader.dt, sizeof(catmanData.ChannelHeaderSection[i].extendedChannelHeader.dt));
    rf.read((char*)&catmanData.ChannelHeaderSection[i].extendedChannelHeader.sensorType, sizeof(catmanData.ChannelHeaderSection[i].extendedChannelHeader.sensorType));
    rf.read((char*)&catmanData.ChannelHeaderSection[i].extendedChannelHeader.supplyVoltage, sizeof(catmanData.ChannelHeaderSection[i].extendedChannelHeader.supplyVoltage));

    rf.read((char*)&catmanData.ChannelHeaderSection[i].extendedChannelHeader.filtChar, sizeof(catmanData.ChannelHeaderSection[i].extendedChannelHeader.filtChar));
    rf.read((char*)&catmanData.ChannelHeaderSection[i].extendedChannelHeader.filtFreq, sizeof(catmanData.ChannelHeaderSection[i].extendedChannelHeader.filtFreq));
    rf.read((char*)&catmanData.ChannelHeaderSection[i].extendedChannelHeader.tareVal, sizeof(catmanData.ChannelHeaderSection[i].extendedChannelHeader.tareVal));
    rf.read((char*)&catmanData.ChannelHeaderSection[i].extendedChannelHeader.zeroVal, sizeof(catmanData.ChannelHeaderSection[i].extendedChannelHeader.zeroVal));
    rf.read((char*)&catmanData.ChannelHeaderSection[i].extendedChannelHeader.measRange, sizeof(catmanData.ChannelHeaderSection[i].extendedChannelHeader.measRange));
    rf.read((char*)&catmanData.ChannelHeaderSection[i].extendedChannelHeader.inChar[0], sizeof(catmanData.ChannelHeaderSection[i].extendedChannelHeader.inChar[0]));
    rf.read((char*)&catmanData.ChannelHeaderSection[i].extendedChannelHeader.inChar[1], sizeof(catmanData.ChannelHeaderSection[i].extendedChannelHeader.inChar[1]));
    rf.read((char*)&catmanData.ChannelHeaderSection[i].extendedChannelHeader.inChar[2], sizeof(catmanData.ChannelHeaderSection[i].extendedChannelHeader.inChar[2]));
    rf.read((char*)&catmanData.ChannelHeaderSection[i].extendedChannelHeader.in

<details>
<summary>英文:</summary>

I am working in C++ with a program where I read a binary file received from a Catman&#39;s Data Acquisition Device. It has been working alright so far but I am stuck on a point where I think I either read too much or too little and I am out of ideas what differs from my C++ code compared to a python code that does exactly what I want to recreate.

There is a lot of repetitive lines of code involved so I want to preface with saying I have a sort of facit from a python library that does the exact thing I want. So I will show the parts where my C++ code seem to behave differently from the python code. I will print the entire reproducable code at the end of the post in a Post Scriptum.

Here is the python libary for what I want to do: https://github.com/leonbohmann/APReader/blob/9d76be8e94860a0711f2c7c4973641706c5ea479/apread/entries.py#L32

So my project is recreating the python library but for C++. I get stuck at reading an &quot;extended channel header&quot; where the &quot;HPFilt&quot; field starts filling with garbled/unintended data.

Here is what python reads from the &quot;extended channel header&quot;:

&gt; {&#39;T0&#39;: 44916.26666666667, 
&gt; &#39;dt&#39;: 3.3333333333333335, 
&gt; &#39;SensorType&#39;: 0, 
&gt; &#39;SupplyVoltage&#39;: 0, 
&gt; &#39;FiltChar&#39;: 0, 
&gt; &#39;FiltFreq&#39;: 0, 
&gt; &#39;TareVal&#39;: 0.0, 
&gt; &#39;ZeroVal&#39;: 0.0, 
&gt; &#39;MeasRange&#39;: 0.0, 
&gt; &#39;InChar&#39;: [0.0, 0.0, 0.0, 0.0], 
&gt; &#39;SerNo&#39;: &#39;                                &#39;, 
&gt; &#39;PhysUnit&#39;: &#39;        &#39;, 
&gt; &#39;NativeUnit&#39;: &#39;        &#39;, 
&gt; &#39;Slot&#39;: 0, 
&gt; &#39;SubSlot&#39;: 0, 
&gt; &#39;AmpType&#39;: 0, 
&gt; &#39;APType&#39;: 0, 
&gt; &#39;kFactor&#39;: 0.0, 
&gt; &#39;bFactor&#39;: 0.0, 
&gt; &#39;MeasSig&#39;: 0, 
&gt; &#39;AmpInput&#39;: 0, 
&gt; &#39;HPFilt&#39;: 0, 
&gt; &#39;OLImportInfo&#39;: 0, 

Here is that part of python code:

        exthdr[&#39;T0&#39;] = rdr.read_double() # (pos0+) 8
        exthdr[&#39;dt&#39;] = rdr.read_double() # 16
        exthdr[&#39;SensorType&#39;] = rdr.read_int16() # 18
        exthdr[&#39;SupplyVoltage&#39;] = rdr.read_int16() # 20
        
        exthdr[&#39;FiltChar&#39;] = rdr.read_int16() # 22
        exthdr[&#39;FiltFreq&#39;] = rdr.read_int16() # 24
        exthdr[&#39;TareVal&#39;] = rdr.read_float() # 28
        exthdr[&#39;ZeroVal&#39;] = rdr.read_float() # 32   
        exthdr[&#39;MeasRange&#39;] = rdr.read_float() # 36
        exthdr[&#39;InChar&#39;] = [rdr.read_float() for i in range(4)] # 40, 44, 48, 52
        
        exthdr[&#39;SerNo&#39;] = rdr.read_string(32) # 84
        exthdr[&#39;PhysUnit&#39;] = rdr.read_string(8) # 92
        exthdr[&#39;NativeUnit&#39;] = rdr.read_string(8) # 100
        
        exthdr[&#39;Slot&#39;] = rdr.read_int16() # 102
        exthdr[&#39;SubSlot&#39;] = rdr.read_int16() # 104
        exthdr[&#39;AmpType&#39;] = rdr.read_int16() # 106
        exthdr[&#39;APType&#39;] = rdr.read_int16() # 108
        exthdr[&#39;kFactor&#39;] = rdr.read_float() # 112
        exthdr[&#39;bFactor&#39;] = rdr.read_float() # 116
        
        exthdr[&#39;MeasSig&#39;] = rdr.read_int16() # 118
        exthdr[&#39;AmpInput&#39;] = rdr.read_int16() # 120
        exthdr[&#39;HPFilt&#39;] = rdr.read_int16() # 122
        exthdr[&#39;OLImportInfo&#39;] = rdr.read_byte() # 123

Here is what my C++ program reads from the &quot;extended channel header&quot;:

&gt; ch 1 Tzero                     : 44916.266667
&gt; ch 1 dt                        : 3.333333
&gt; ch 1 sensorType                : 0
&gt; ch 1 supplyVoltage             : 0
&gt; ch 1 filtChar                  : 0
&gt; ch 1 filtFreq                  : 0
&gt; ch 1 tareVal                   : 0.000000
&gt; ch 1 measRange                 : 0.000000
&gt; ch 1 inChar[0]                 : 0.000000
&gt; ch 1 inChar[1]                 : 0.000000
&gt; ch 1 inChar[2]                 : 0.000000
&gt; ch 1 inChar[3]                 : 0.000000
&gt; ch 1 serNo                     :
&gt; ch 1 physUnit                  :
&gt; ch 1 nativeUnit                :
&gt; ch 1 slot                      : 0
&gt; ch 1 subSlot                   : 0
&gt; ch 1 ampType                   : 0
&gt; ch 1 APType                    : 0
&gt; ch 1 kFactor                   : 0.000000
&gt; ch 1 bFactor                   : 0.000000
&gt; ch 1 measSig                   : 0
&gt; ch 1 ampInput                  : 0
&gt; ch 1 HPFilt                    : 538968832
&gt; ch 1 OLImport                  : 20

here&#39;s that part of C++ code:

        rf.read((char*)&amp;catmanData.ChannelHeaderSection[i].extendedChannelHeader.TZero, sizeof(catmanData.ChannelHeaderSection[i].extendedChannelHeader.TZero));
        rf.read((char*)&amp;catmanData.ChannelHeaderSection[i].extendedChannelHeader.dt, sizeof(catmanData.ChannelHeaderSection[i].extendedChannelHeader.dt));
        rf.read((char*)&amp;catmanData.ChannelHeaderSection[i].extendedChannelHeader.sensorType, sizeof(catmanData.ChannelHeaderSection[i].extendedChannelHeader.sensorType));
        rf.read((char*)&amp;catmanData.ChannelHeaderSection[i].extendedChannelHeader.supplyVoltage, sizeof(catmanData.ChannelHeaderSection[i].extendedChannelHeader.supplyVoltage));

        rf.read((char*)&amp;catmanData.ChannelHeaderSection[i].extendedChannelHeader.filtChar, sizeof(catmanData.ChannelHeaderSection[i].extendedChannelHeader.filtChar));
        rf.read((char*)&amp;catmanData.ChannelHeaderSection[i].extendedChannelHeader.filtFreq, sizeof(catmanData.ChannelHeaderSection[i].extendedChannelHeader.filtFreq));
        rf.read((char*)&amp;catmanData.ChannelHeaderSection[i].extendedChannelHeader.tareVal, sizeof(catmanData.ChannelHeaderSection[i].extendedChannelHeader.tareVal));
        rf.read((char*)&amp;catmanData.ChannelHeaderSection[i].extendedChannelHeader.zeroVal, sizeof(catmanData.ChannelHeaderSection[i].extendedChannelHeader.zeroVal));
        rf.read((char*)&amp;catmanData.ChannelHeaderSection[i].extendedChannelHeader.measRange, sizeof(catmanData.ChannelHeaderSection[i].extendedChannelHeader.measRange));
        rf.read((char*)&amp;catmanData.ChannelHeaderSection[i].extendedChannelHeader.inChar[0], sizeof(catmanData.ChannelHeaderSection[i].extendedChannelHeader.inChar[0]));
        rf.read((char*)&amp;catmanData.ChannelHeaderSection[i].extendedChannelHeader.inChar[1], sizeof(catmanData.ChannelHeaderSection[i].extendedChannelHeader.inChar[1]));
        rf.read((char*)&amp;catmanData.ChannelHeaderSection[i].extendedChannelHeader.inChar[2], sizeof(catmanData.ChannelHeaderSection[i].extendedChannelHeader.inChar[2]));
        rf.read((char*)&amp;catmanData.ChannelHeaderSection[i].extendedChannelHeader.inChar[3], sizeof(catmanData.ChannelHeaderSection[i].extendedChannelHeader.inChar[3]));

        rf.read((char*)&amp;catmanData.ChannelHeaderSection[i].extendedChannelHeader.serNo, 32);
        rf.read((char*)&amp;catmanData.ChannelHeaderSection[i].extendedChannelHeader.physUnit, 8);
        rf.read((char*)&amp;catmanData.ChannelHeaderSection[i].extendedChannelHeader.nativeUnit, 8);

        rf.read((char*)&amp;catmanData.ChannelHeaderSection[i].extendedChannelHeader.slot, sizeof(catmanData.ChannelHeaderSection[i].extendedChannelHeader.slot));
        rf.read((char*)&amp;catmanData.ChannelHeaderSection[i].extendedChannelHeader.subSlot, sizeof(catmanData.ChannelHeaderSection[i].extendedChannelHeader.subSlot));
        rf.read((char*)&amp;catmanData.ChannelHeaderSection[i].extendedChannelHeader.ampType, sizeof(catmanData.ChannelHeaderSection[i].extendedChannelHeader.ampType));
        rf.read((char*)&amp;catmanData.ChannelHeaderSection[i].extendedChannelHeader.APType, sizeof(catmanData.ChannelHeaderSection[i].extendedChannelHeader.APType));
        rf.read((char*)&amp;catmanData.ChannelHeaderSection[i].extendedChannelHeader.kFactor, sizeof(catmanData.ChannelHeaderSection[i].extendedChannelHeader.kFactor));
        rf.read((char*)&amp;catmanData.ChannelHeaderSection[i].extendedChannelHeader.bFactor, sizeof(catmanData.ChannelHeaderSection[i].extendedChannelHeader.bFactor));

        rf.read((char*)&amp;catmanData.ChannelHeaderSection[i].extendedChannelHeader.measSig, sizeof(catmanData.ChannelHeaderSection[i].extendedChannelHeader.measSig));
        rf.read((char*)&amp;catmanData.ChannelHeaderSection[i].extendedChannelHeader.ampInput, sizeof(catmanData.ChannelHeaderSection[i].extendedChannelHeader.ampInput));
        rf.read((char*)&amp;catmanData.ChannelHeaderSection[i].extendedChannelHeader.HPFilt, sizeof(catmanData.ChannelHeaderSection[i].extendedChannelHeader.HPFilt));                  // Should read 0...
        rf.read((char*)&amp;catmanData.ChannelHeaderSection[i].extendedChannelHeader.OLImport, sizeof(catmanData.ChannelHeaderSection[i].extendedChannelHeader.OLImport));

So somewhere after the &quot;dt&quot; field it seems my code either reads too much or too little. I have checked the types I use so that they are not different but could be I misunderstood something there as well, so here they are:

struct catman_VB_DB_CHANHEADER
{
double TZero;
double dt;
int sensorType;
int supplyVoltage;
int filtChar;
int filtFreq;
float tareVal;
float zeroVal;
float measRange;
float inChar[4];
char serNo[32];//std::string serNo;
char physUnit[8];//std::string physUnit;
char nativeUnit[8];//std::string nativeUnit;
int slot;
int subSlot;
int ampType;
int APType;
float kFactor;
float bFactor;
int measSig;
int ampInput;
int HPFilt;
byte OLImport;
};


My theory so far is that i might not be reading the empty fields properly of SerNo, physUnit and nativeUnit. Maybe something here is done differently between the languages? I have tried reading them, not reading them. Only difference is that I get different garbled fields.
PS. The entire reproducable code:

struct catmanGlobalSection
{
short fileID;
long dataOffset;
short fileCommentLength;
//byte fileComment[fileCommentLength];
short additionalDataOffsetNoOfBytes;
//byte additionalDataOffset[additionalDataOffsetNoOfBytes];
short reserveStringNoOfBytes[32];
//byte reserveString[reserveStringNoOfBytes];
short noOfChannels;
long maxChannelLength;
long ChannelLengthOffset[16];
long reductionFactor;
};

struct catmanChannelHeaderSection
{
short channelLocation;
long channelLength;
short channelNameLength;
//byte channelname[channelNameLength];
short unitLength;
//byte unit[unitLength];
short channelCommentLength;
//byte channelComment[channelCommentLength];
short format;
short dataWidth;
double dateAndTimeOfMeasurement;
long extendedChannelHeaderSize;
catman_VB_DB_CHANHEADER extendedChannelHeader;
};

struct catmanFormat
{
catmanGlobalSection globalSection;
catmanChannelHeaderSection ChannelHeaderSection[16];
};


static catmanFormat catmanData;
std::ifstream rf(&quot;FTP Folder/Recorder 14_2022_12_21_06_24_00.bin&quot;, std::ios::in | std::ios::binary);
rf.read((char*)&amp;catmanData.globalSection.fileID, sizeof(catmanData.globalSection.fileID));
rf.read((char*)&amp;catmanData.globalSection.dataOffset, sizeof(catmanData.globalSection.dataOffset));
if(shortVersion)
rf.ignore(catmanData.globalSection.dataOffset);
else
{
rf.read((char*)&amp;catmanData.globalSection.fileCommentLength, sizeof(catmanData.globalSection.fileCommentLength));
rf.ignore(catmanData.globalSection.fileCommentLength);
/* These lines misaligns the buffer... They should be included according to Catman&#39;s binary format document. Leave them commented for now.
rf.read((char*)&amp;catmanData.globalSection.additionalDataOffsetNoOfBytes, sizeof(catmanData.globalSection.additionalDataOffsetNoOfBytes));
rf.ignore(catmanData.globalSection.additionalDataOffsetNoOfBytes);
*/
for (int i = 0; i &lt; 32; i++)
{
rf.read((char*)&amp;catmanData.globalSection.reserveStringNoOfBytes[i], sizeof(catmanData.globalSection.reserveStringNoOfBytes[i]));
rf.ignore(catmanData.globalSection.reserveStringNoOfBytes[i]);
}
}
rf.read((char*)&amp;catmanData.globalSection.noOfChannels, sizeof(catmanData.globalSection.noOfChannels));
rf.read((char*)&amp;catmanData.globalSection.maxChannelLength, sizeof(catmanData.globalSection.maxChannelLength));
for (int i = 0; i &lt; catmanData.globalSection.noOfChannels; i++)
{
rf.read((char*)&amp;catmanData.globalSection.ChannelLengthOffset[i], sizeof(catmanData.globalSection.ChannelLengthOffset[i]));
}
rf.read((char*)&amp;catmanData.globalSection.reductionFactor, sizeof(catmanData.globalSection.reductionFactor));
for (int i = 0; i &lt; catmanData.globalSection.noOfChannels; i++)
{
rf.read((char*)&amp;catmanData.ChannelHeaderSection[i].channelLocation, sizeof(catmanData.ChannelHeaderSection[i].channelLocation));
rf.read((char*)&amp;catmanData.ChannelHeaderSection[i].channelLength, sizeof(catmanData.ChannelHeaderSection[i].channelLength));
rf.read((char*)&amp;catmanData.ChannelHeaderSection[i].channelNameLength, sizeof(catmanData.ChannelHeaderSection[i].channelNameLength));
rf.ignore(catmanData.ChannelHeaderSection[i].channelNameLength);
rf.read((char*)&amp;catmanData.ChannelHeaderSection[i].unitLength, sizeof(catmanData.ChannelHeaderSection[i].unitLength));
rf.ignore(catmanData.ChannelHeaderSection[i].unitLength);
rf.read((char*)&amp;catmanData.ChannelHeaderSection[i].channelCommentLength, sizeof(catmanData.ChannelHeaderSection[i].channelCommentLength));
rf.ignore(catmanData.ChannelHeaderSection[i].channelCommentLength);
rf.read((char*)&amp;catmanData.ChannelHeaderSection[i].format, sizeof(catmanData.ChannelHeaderSection[i].format));
rf.read((char*)&amp;catmanData.ChannelHeaderSection[i].dataWidth, sizeof(catmanData.ChannelHeaderSection[i].dataWidth));
rf.read((char*)&amp;catmanData.ChannelHeaderSection[i].dateAndTimeOfMeasurement, sizeof(catmanData.ChannelHeaderSection[i].dateAndTimeOfMeasurement));
rf.read((char*)&amp;catmanData.ChannelHeaderSection[i].extendedChannelHeaderSize, sizeof(catmanData.ChannelHeaderSection[i].extendedChannelHeaderSize));
rf.read((char*)&amp;catmanData.ChannelHeaderSection[i].extendedChannelHeader.TZero, sizeof(catmanData.ChannelHeaderSection[i].extendedChannelHeader.TZero));
rf.read((char*)&amp;catmanData.ChannelHeaderSection[i].extendedChannelHeader.dt, sizeof(catmanData.ChannelHeaderSection[i].extendedChannelHeader.dt));
rf.read((char*)&amp;catmanData.ChannelHeaderSection[i].extendedChannelHeader.sensorType, sizeof(catmanData.ChannelHeaderSection[i].extendedChannelHeader.sensorType));
rf.read((char*)&amp;catmanData.ChannelHeaderSection[i].extendedChannelHeader.supplyVoltage, sizeof(catmanData.ChannelHeaderSection[i].extendedChannelHeader.supplyVoltage));
rf.read((char*)&amp;catmanData.ChannelHeaderSection[i].extendedChannelHeader.filtChar, sizeof(catmanData.ChannelHeaderSection[i].extendedChannelHeader.filtChar));
rf.read((char*)&amp;catmanData.ChannelHeaderSection[i].extendedChannelHeader.filtFreq, sizeof(catmanData.ChannelHeaderSection[i].extendedChannelHeader.filtFreq));
rf.read((char*)&amp;catmanData.ChannelHeaderSection[i].extendedChannelHeader.tareVal, sizeof(catmanData.ChannelHeaderSection[i].extendedChannelHeader.tareVal));
rf.read((char*)&amp;catmanData.ChannelHeaderSection[i].extendedChannelHeader.zeroVal, sizeof(catmanData.ChannelHeaderSection[i].extendedChannelHeader.zeroVal));
rf.read((char*)&amp;catmanData.ChannelHeaderSection[i].extendedChannelHeader.measRange, sizeof(catmanData.ChannelHeaderSection[i].extendedChannelHeader.measRange));
rf.read((char*)&amp;catmanData.ChannelHeaderSection[i].extendedChannelHeader.inChar[0], sizeof(catmanData.ChannelHeaderSection[i].extendedChannelHeader.inChar[0]));
rf.read((char*)&amp;catmanData.ChannelHeaderSection[i].extendedChannelHeader.inChar[1], sizeof(catmanData.ChannelHeaderSection[i].extendedChannelHeader.inChar[1]));
rf.read((char*)&amp;catmanData.ChannelHeaderSection[i].extendedChannelHeader.inChar[2], sizeof(catmanData.ChannelHeaderSection[i].extendedChannelHeader.inChar[2]));
rf.read((char*)&amp;catmanData.ChannelHeaderSection[i].extendedChannelHeader.inChar[3], sizeof(catmanData.ChannelHeaderSection[i].extendedChannelHeader.inChar[3]));
rf.read((char*)&amp;catmanData.ChannelHeaderSection[i].extendedChannelHeader.serNo, 32);
rf.read((char*)&amp;catmanData.ChannelHeaderSection[i].extendedChannelHeader.physUnit, 8);
rf.read((char*)&amp;catmanData.ChannelHeaderSection[i].extendedChannelHeader.nativeUnit, 8);
rf.read((char*)&amp;catmanData.ChannelHeaderSection[i].extendedChannelHeader.slot, sizeof(catmanData.ChannelHeaderSection[i].extendedChannelHeader.slot));
rf.read((char*)&amp;catmanData.ChannelHeaderSection[i].extendedChannelHeader.subSlot, sizeof(catmanData.ChannelHeaderSection[i].extendedChannelHeader.subSlot));
rf.read((char*)&amp;catmanData.ChannelHeaderSection[i].extendedChannelHeader.ampType, sizeof(catmanData.ChannelHeaderSection[i].extendedChannelHeader.ampType));
rf.read((char*)&amp;catmanData.ChannelHeaderSection[i].extendedChannelHeader.APType, sizeof(catmanData.ChannelHeaderSection[i].extendedChannelHeader.APType));
rf.read((char*)&amp;catmanData.ChannelHeaderSection[i].extendedChannelHeader.kFactor, sizeof(catmanData.ChannelHeaderSection[i].extendedChannelHeader.kFactor));
rf.read((char*)&amp;catmanData.ChannelHeaderSection[i].extendedChannelHeader.bFactor, sizeof(catmanData.ChannelHeaderSection[i].extendedChannelHeader.bFactor));
rf.read((char*)&amp;catmanData.ChannelHeaderSection[i].extendedChannelHeader.measSig, sizeof(catmanData.ChannelHeaderSection[i].extendedChannelHeader.measSig));
rf.read((char*)&amp;catmanData.ChannelHeaderSection[i].extendedChannelHeader.ampInput, sizeof(catmanData.ChannelHeaderSection[i].extendedChannelHeader.ampInput));
rf.read((char*)&amp;catmanData.ChannelHeaderSection[i].extendedChannelHeader.HPFilt, sizeof(catmanData.ChannelHeaderSection[i].extendedChannelHeader.HPFilt));                  // Should read 0...
rf.read((char*)&amp;catmanData.ChannelHeaderSection[i].extendedChannelHeader.OLImport, sizeof(catmanData.ChannelHeaderSection[i].extendedChannelHeader.OLImport));
}
</details>
# 答案1
**得分**: 0
以下是翻译好的部分：
包含***两个***错误的定义：
1. 您以*输出*模式打开了一个仅输入的流。
2. `std::ios::out` 和 `std::ios::binary` 是需要按位或运算而不是作为单独参数传递的位*标志*。
组合起来：
```cpp
std::ofstream rf(..., std::ios::out | std::ios::binary);

英文:

The definition

std::ifstream rf(..., std::ios::out, std::ios::binary);

contains two errors:

You open an input-only stream in output mode.
std::ios::out and std::ios::binary are bitwise flags that need to be bitwise-or'ed together, not passed as separate arguments.

Put together:

std::ofstream rf(..., std::ios::out | std::ios::binary);

答案2

得分: 0

在流缓冲区中查看_Chcount字段后，我发现我的整数变量被计为4字节，而实际上它们应该计为2字节。我本可以直接检查，但事实证明我没有这样做。

换句话说，我的整数太大了，我将它们改为short int。现在它运行得更好了。

英文:

After looking at the _Chcount field in the stream buffer I found my integer variables counted as 4 bytes when they should count as 2 bytes. I could have also checked directly but I didn't as it turned out.

My integers were too large in other words and I changed them to short int instead. It works better now.

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问题

答案2

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