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Add support for triggered voltage buffer dumps from OVRO-LWA #32

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Add support for triggered voltage buffer dumps from OVRO-LWA #32

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8013b54
Started working on a reader for OVRO-LWA triggered voltage buffer dum…
jaycedowell Mar 31, 2023
5a55c9d
Various fixes.
jaycedowell Mar 31, 2023
bf33580
Added a spectra plotter.
jaycedowell Mar 31, 2023
fa1d1ac
Switch over to a per timestamp-style reader to better match TBF.
jaycedowell Mar 31, 2023
121ce1e
Make more use of the header cache.
jaycedowell Mar 31, 2023
bbfa6ea
Rename since it does something a little different from the other read…
jaycedowell Mar 31, 2023
de72a46
Try to keep the header cache clean and current.
jaycedowell Mar 31, 2023
b80bc41
Fix timetag handling.
jaycedowell Apr 6, 2023
cbf7071
Simple test suite.
jaycedowell Apr 6, 2023
34e0a30
Typo.
jaycedowell Apr 6, 2023
75a1895
These files aren't exactly like TBF files.
jaycedowell Apr 6, 2023
554f6ec
Added support for OVRO-LWA in lsl.reader.ldp.
jaycedowell Apr 6, 2023
5ca9fa9
Update.
jaycedowell Apr 6, 2023
2b96dda
Merge branch 'main' into ovro_tbf
jaycedowell Apr 13, 2023
9c01c8a
Merge branch 'main' into ovro_tbf
jaycedowell May 18, 2023
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2 changes: 2 additions & 0 deletions CHANGELOG
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Original file line number Diff line number Diff line change
Expand Up @@ -5,6 +5,8 @@
* Dropped unlzw in favor of using the gzip utility
* Made antenna inclusion/exclusion more robust in lsl.imaging.data.VisibilityDataSet.get_antenna_subset()
* Added support for "long (ionospheric) product names"
* Added support for triggered voltage buffer dump files from OVRO-LWA with lsl.reader.ovro
* Added support for triggered voltage buffer dump files from OVRO-LWA in lsl.reader.ldp

2.1.7
* Updated the LWA-SV SSMIF to 2022/11/15
Expand Down
Binary file added lsl/data/tests/ovro-test.dat
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22 changes: 14 additions & 8 deletions lsl/reader/gofast.c
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Original file line number Diff line number Diff line change
Expand Up @@ -41,6 +41,7 @@ short int tbw4LUT[256][2];
float tbnLUT[256];
float drxLUT[256][2];
float tbfLUT[256][2];
float ovroLUT[256][2];

static void initLWALUTs(void) {
// Look-up table inialization function from the VDIFIO library
Expand All @@ -63,7 +64,7 @@ static void initLWALUTs(void) {
tbnLUT[i] -= ((i&128)<<1);
}

// DRX & TBF
// DRX & TBF & OVRO
for(i=0; i<256; i++) {
for(j=0; j<2; j++) {
t = (i >> 4*(1-j)) & 15;
Expand All @@ -72,6 +73,9 @@ static void initLWALUTs(void) {

tbfLUT[i][j] = t;
tbfLUT[i][j] -= ((t&8)<<1);

ovroLUT[i][j] = t;
ovroLUT[i][j] -= ((t&8)<<1);
}
}
}
Expand All @@ -82,13 +86,14 @@ static void initLWALUTs(void) {
*/

static PyMethodDef GoFastMethods[] = {
{"read_tbw", (PyCFunction) read_tbw, METH_VARARGS, read_tbw_doc },
{"read_tbn", (PyCFunction) read_tbn, METH_VARARGS, read_tbn_doc },
{"read_drx", (PyCFunction) read_drx, METH_VARARGS, read_drx_doc },
{"read_drspec", (PyCFunction) read_drspec, METH_VARARGS, read_drspec_doc},
{"read_vdif", (PyCFunction) read_vdif, METH_VARARGS|METH_KEYWORDS, read_vdif_doc },
{"read_tbf", (PyCFunction) read_tbf, METH_VARARGS, read_tbf_doc },
{"read_cor", (PyCFunction) read_cor, METH_VARARGS, read_cor_doc },
{"read_tbw", (PyCFunction) read_tbw, METH_VARARGS, read_tbw_doc },
{"read_tbn", (PyCFunction) read_tbn, METH_VARARGS, read_tbn_doc },
{"read_drx", (PyCFunction) read_drx, METH_VARARGS, read_drx_doc },
{"read_drspec", (PyCFunction) read_drspec, METH_VARARGS, read_drspec_doc },
{"read_vdif", (PyCFunction) read_vdif, METH_VARARGS|METH_KEYWORDS, read_vdif_doc },
{"read_tbf", (PyCFunction) read_tbf, METH_VARARGS, read_tbf_doc },
{"read_cor", (PyCFunction) read_cor, METH_VARARGS, read_cor_doc },
{"read_ovro_spec", (PyCFunction) read_ovro_spec, METH_VARARGS, read_ovro_spec_doc},
{NULL, NULL, 0, NULL }
};

Expand Down Expand Up @@ -162,6 +167,7 @@ MOD_INIT(_gofast) {
PyList_Append(all, PyString_FromString("read_vdif"));
PyList_Append(all, PyString_FromString("read_tbf"));
PyList_Append(all, PyString_FromString("read_cor"));
PyList_Append(all, PyString_FromString("read_ovro_spec"));
PyList_Append(all, PyString_FromString("SyncError"));
PyList_Append(all, PyString_FromString("EOFError"));
PyList_Append(all, PyString_FromString("NCHAN_COR"));
Expand Down
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