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'encoderValue' (shape: 1): 23563414
'timing' (shape: 1): 505870
'scale' (shape: 1): 1
'scaleDenom' (shape: 1): 150
'mode' (shape: 1): 0
'error' (shape: 1): 0
'majorVersion' (shape: 1): 2
'minorVersion' (shape: 1): 0
'microVersion' (shape: 1): 0
Zach writes:
...if the denominator is used, we do no pre or post multiplication of the values. If I need to express something like numerator = 1.16 and denominator = 5.0, I would send 116 and 500 which maintains the same ratio as the original.
In the specific case of this encoder, I send 1 and 150 exactly and your code on the other side simply doesn’t do the *1e-6 step because a denominator is present.
Configuring the Timing System
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Testing With Encoder Simulator (sim_udpencoder)
| Code Block | ||||||
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$ sim_udpencoder -h
Usage: sim_udpencoder [options]
Options: -r <rate> (0:929kHz,1:71kHz,..)
-e <evcode>
-p <partition>
-d <data port> (default 5006)
-v (verbose)
Either -r or -e or -p is required |
Testing With Loopback Mode (drp_udpencoder -L <loopback_port>)
Configuring TPR On DAQ Partition
| Code Block | ||||
|---|---|---|---|---|
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You can get tprtrig to trigger the EVR on a DAQ partition, then sleep, like so:
$ tprtrig -t a -c 0 -o 1 -d 2 -w 10 -p 4 -z
programs EVR /dev/tpra (-t a) to generate a TTL trigger using logic channel 0 (-c 0) on output 0 (-o 1 [bit mask]) with delay of 2 119MHz clocks (-d 2) and width 10 119 MHz clocks (-w 10) for every L1Accept on partition 4 (-p 4). |
Configuring TPR Standalone
| Code Block | ||||
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Generate 1Hz triggers on output 0 with a width of 54 nanoseconds, then sleep.
$ tprtrig -t a -c 0 -o 1 -d 1 -w 10 -r 6 -z |
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Loopback Mode
In loopback mode no encoder or PLC or added process is required, as the DRP drp_udpencoder sends and receives simulated data via localhost.
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