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Commit 27f89c97 authored by Theodor-Adrian Stana's avatar Theodor-Adrian Stana
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software: Update tsdiff.py and README.txt

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software/diag/timetag/README.txt
View file @ 27f89c97
......@@ -3,34 +3,34 @@ Scripts for the time-tagging logic
On the time-tagging side, the following scripts exist:
rdfifo.py -- Read samples of the tag FIFO while they exist
tsdiff.py -- Output the difference between two time-stamps from the FIFO
rdtb.py -- Read samples of the tag buffer while they exist
tsdiff.py -- Output the difference between two time-stamps from the buffer
tsset.py -- set TAI time stamp value, clearing the cycles counter in the
process
While the last script is pretty straightforward, the first two need some
further notes on their functioning.
rdfifo.py
rdtb.py
---------
First, the rdfifo.py script can be used to read the FIFO and output its
First, the rdtb.py script can be used to read the timetag ring buffer and output its
contents. The output can be the prompt (stdout), or a file if the user selects
it. When the script is started, it asks for the slot number (as usual), then
whether it should output to a file, and the filename if it should:
%> python rdfifo.py
%> python rdtb.py
Slot no.: 1
Output samples to file? (y/n) y
File name (with extension): myfile.txt
The last part of the output is -- no matter whether you selected to output to
a file or not -- the number of pulses stored to the FIFO on each channel,
a file or not -- the number of pulses stored to the timetag ring buffer on each channel,
calculated based on the number of times the channel mask was containing a '1'
for a particular channel.
The output file can be used by the tsdiff.py script to print the difference
between two timestamps on stdout. The format of the FIFO output is the
between two timestamps on stdout. The format of the timetag ring buffer output is the
following:
(<USEDW>) <channel mask> : <TAI value>.<seconds value>
......@@ -46,21 +46,21 @@ tsdiff.py
---------
This script can be used to calculated the difference between consecutive
timestamps in the FIFO. It requires an output file from the rdfifo.py script
timestamps in the timetag ring buffer. It requires an output file from the rdtb.py script
and then retrieves the TAI and seconds value from the script's output,
printing the difference between one timestamp and the previous.
Additionally, the script calculates when the timestamp difference is less than
6 us (the pulse rejection period on the CONV-TTL-BLO) and prints an extra
warning to the sample.
the pulse rejection period on the CONV-TTL-BLO and prints an extra warning to the
sample.
The output -- based on that of the rdfifo.py output -- is:
The output -- based on that of the rdtb.py output -- is:
(<channel mask>) <TAI difference>.<seconds difference>
Note that the first sample in the output is always the first timestamp value.
To run (considering the output file in the rdfifo.py section):
To run (considering the output file in the rdtb.py section):
%> python tsdiff.py
Input file name (with extension): myfile.txt
......
software/diag/timetag/tsdiff.py
View file @ 27f89c97
......@@ -44,7 +44,7 @@ if __name__ == "__main__":
# Print
p = "(%s) %d.%09d" % ("{0:#08b}".format(ch)[2:], sd, nsd)
if (sd == 0) and (nsd < 6000) and (ch & prch):
if (sd == 0) and (nsd < 240000) and (ch & prch):
p += " [!!!]"
print(p)
prch = ch
......
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