The RawTpx3Pixel structure in memory
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The structure is declared:
#pragma pack(push, 1)
typedef struct _RawTpx3Pixel
{
u32 index: 24;
u64 toa: 64;
byte overflow: 1;
byte ftoa: 5;
u16 tot: 10;
} RawTpx3Pixel;
#pragma pack(pop)
But #pragma pack may not be 100% respected by the compiler, for example due to mandatory alignment.
First test
Add testbox, checkbox and test code to the Tpx3-1 example from the AdvacamApiExamplesPackage
Add global declarations:
RawTpx3Pixel dataDrivenPxRaw[32000000];
int dataDrivenPxRawOvrFirst = -1;
int dataDrivenPxRawLen = -1;
bool showRawPx = false;
Add this code to begin of the initMeasParams() function:
showRawPx = checkRawPixels->Checked; dataDrivenPxRawLen = -1; txtRawData->Visible = showRawPx;
Show the data sample function, add above the timer1_Tick function:
void showRawPxFn() {
if (dataDrivenPxRawLen < 1) return;
int start = (dataDrivenPxRawOvrFirst > 0) ? dataDrivenPxRawOvrFirst : 0;
if (start > 1) start-=2;
String^ s = String::Format("start adr: {0}, OvrFirst: {1}, siz: {2}\r\n", start, dataDrivenPxRawOvrFirst, sizeof(RawTpx3Pixel)) + "index 24 / toa 64 / overflow 1 / ftoa 5 / tot 10\r\n";
for (int n = 0; n < 20; n++) {
int idx = start + n;
s += String::Format("{0}\t{1}\t{2} {3}\t{4}\t", dataDrivenPxRaw[idx].index, dataDrivenPxRaw[idx].toa, dataDrivenPxRaw[idx].overflow, dataDrivenPxRaw[idx].ftoa, dataDrivenPxRaw[idx].tot);
s += "B:";
unsigned char* arr = (unsigned char*)(dataDrivenPxRaw + idx);
for (int i=0; i < 16; i++) {
s += String::Format(" {0}", arr[i]);
}
s += "\r\n";
}
txtRawData->Text = s;
}
Add the line
if (showRawPx) showRawPxFn();
to the
if (dataDrivenPixelsCount != 0) {
section in the timer1_Tick function
Add this section to end of the clbDataDriven function:
if (showRawPx) {
if (dataDrivenPixelsCount > 1000000) dataDrivenPixelsCount = 1000000;
rc = pxcGetMeasuredRawTpx3Pixels(deviceIndex, dataDrivenPxRaw, dataDrivenPixelsCount);
dataDrivenPxRawOvrFirst = -1;
dataDrivenPxRawLen = 0;
if (rc != 0) {
dataDrivenPxRawLen = 0;
clbError = rc;
return;
}
dataDrivenPxRawLen = dataDrivenPixelsCount;
for (int n = 0; n < dataDrivenPixelsCount; n++) {
if (dataDrivenPxRaw[n].overflow != 0) {
dataDrivenPxRawOvrFirst = n;
break;
}
}
}
The result
start adr: 0, OvrFirst: -1, sizeof: 15
index 24 / toa 64 / overflow 1 / ftoa 5 / tot 10
242 196318 0 20 14 B: 242 0 0 0 222 254 2 0 0 0 0 0 40 14 0 242
242 238506 0 9 3 B: 242 0 0 0 170 163 3 0 0 0 0 0 18 3 0 238
750 386872 0 19 20 B: 238 2 0 0 56 231 5 0 0 0 0 0 38 20 0 238
750 445251 0 17 17 B: 238 2 0 0 67 203 6 0 0 0 0 0 34 17 0 238
750 477832 0 14 8 B: 238 2 0 0 136 74 7 0 0 0 0 0 28 8 0 238
750 572804 0 12 11 B: 238 2 0 0 132 189 8 0 0 0 0 0 24 11 0 6
4614 631863 0 15 21 B: 6 18 0 0 55 164 9 0 0 0 0 0 30 21 0 6
4614 636812 0 25 27 B: 6 18 0 0 140 183 9 0 0 0 0 0 50 27 0 6