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FMC DEL 1ns 4cha - Software
Commit 2b2401fa authored by Alessandro Rubini's avatar Alessandro Rubini
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tools/fmc-fdelay-status: report both human readable and raw 

Additionally, document the effect of delay-offset calibration parameter
in the read-back of values.
Signed-off-by: Alessandro Rubini's avatarAlessandro Rubini <rubini@gnudd.com>
parent aa877ec8
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doc/fine-delay.in
View file @ 2b2401fa
...@@ -1078,7 +1078,7 @@ options: ...@@ -1078,7 +1078,7 @@ options:
@item -o <output> @item -o <output>
Output channels are numbered 1 to 4, as written on the device panel. Output channels are numbered 1 to 4, as written on the device panel.
Each command incocation can set only one output channel; the Each command invocation can set only one output channel; the
last @t{-o} specified takes precedence. last @t{-o} specified takes precedence.
@item -c <count> @item -c <count>
...@@ -1095,7 +1095,7 @@ options: ...@@ -1095,7 +1095,7 @@ options:
a fraction of a second, specified as For pulse mode, a fraction of a second, specified as For pulse mode,
the program adds the current board time in seconds. Please note that the program adds the current board time in seconds. Please note that
for pulse mode the second is relative, but the fraction is absolute. for pulse mode the second is relative, but the fraction is absolute.
So ``@t{-r 1.5}'' will activate aoutput at the middle of the So ``@t{-r 1.5}'' will activate output at the middle of the
next second, according to board time. For @i{delay} mode, the next second, according to board time. For @i{delay} mode, the
time is a relative delay. time is a relative delay.
...@@ -1163,30 +1163,32 @@ This is, for example, how verbose operation reports the request for a single pul ...@@ -1163,30 +1163,32 @@ This is, for example, how verbose operation reports the request for a single pul
@node fmc-fdelay-status @node fmc-fdelay-status
@section fmc-fdelay-status @section fmc-fdelay-status
The program reports the current output status of the forur channels. The program reports the current output status of the four channels,
It receives no arguments besides the usual @t{-i} or @t{-d}. This both in human-readable and raw format. The receives no arguments
is an example of its current output: besides the usual @t{-i} or @t{-d}.
Please note that the tool reads back hardware values, which are already
fixed for calibration delays. For example, this is the output
I get after the previously-shown activation command, that was for
13729 + 2 microseconds:
@smallexample @smallexample
spusa.root# ./tools/fmc-fdelay-status spusa.root# ./tools/fmc-fdelay-status
Channel 1, mode already-triggered, repeat 1
start time 13729:000,001,961,814 ps
end time 13729:000,002,261,814 ps
loop time 0:100,000,000,000 ps
Channel 1, mode already-triggered, repeat 1 Channel 1, mode already-triggered, repeat 1
start utc 1470, coarse 124999995, frac 929 start raw utc 13729, coarse 245, frac 929
end utc 1471, coarse 1249995, frac 929 end raw utc 13729, coarse 282, frac 2977
loop utc 1, coarse 0, frac 0 loop raw utc 0, coarse 12500000, frac 0
Channel 2, mode already-triggered, repeat 1 [...]
start utc 1507, coarse 124999995, frac 945
end utc 1508, coarse 1, frac 945
loop utc 0, coarse 12, frac 2048
Channel 3, mode already-triggered, repeat 1
start utc 3647, coarse 6362495, frac 949
end utc 3647, coarse 124995, frac 949
loop utc 0, coarse 750000, frac 0
Channel 4, mode disable, repeat 1
start utc 0, coarse 0, frac 0
end utc 0, coarse 0, frac 0
loop utc 0, coarse 0, frac 0
@end smallexample @end smallexample
The difference in value depends on the @t{delay-offset} value for
the channel, according to calibration.
@c ########################################################################## @c ##########################################################################
@node Troubleshooting @node Troubleshooting
@appendix Troubleshooting @appendix Troubleshooting
......
tools/fmc-fdelay-status.c
View file @ 2b2401fa
...@@ -68,6 +68,8 @@ int main(int argc, char **argv) ...@@ -68,6 +68,8 @@ int main(int argc, char **argv)
argv[0], ch, strerror(errno)); argv[0], ch, strerror(errno));
} }
/* pass hw number again, as the function is low-level */ /* pass hw number again, as the function is low-level */
tools_report_action(FDELAY_OUTPUT_USER_TO_HW(ch),
&p, TOOLS_UMODE_USER);
tools_report_action(FDELAY_OUTPUT_USER_TO_HW(ch), tools_report_action(FDELAY_OUTPUT_USER_TO_HW(ch),
&p, TOOLS_UMODE_RAW); &p, TOOLS_UMODE_RAW);
} }
......
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