CANoe DENoe - KEMT FEI TUKE

4.3 Replay Block
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The replay block makes it possible to replay measurement sequences which have
already been recorded. To do this, the user specifies a log file. Messages contained
in it are introduced into the data flow. The most important application is replaying a
recorded data stream onto the CAN bus. To do this, the replay block must be inserted
in the transmit branch.
Instructions on how to use Replay blocks to also play back environment variables,
e.g. to generate test sequences, are given in section 4.3.1.
Replay blocks appear in the data flow plan as small blocks with the label R. Double
clicking these blocks causes a dialog box to appear, in which the replay block can be
configured.
The user can specify whether RX messages or TX messages are to be transmitted or
not. The user can also choose whether messages originating from CAN controller 1
should be transmitted on CAN 1 or CAN 2, or should not be transmitted at all, and
similarly for messages originating from CAN 2.
The file can be transmitted once or cyclically. For cyclic transmission, transmission
resumes with the first message after the end of the file is reached.
There are three possibilities to define the start of transmission of the first message
of the file.
• Immediate
The first message is transmitted at the start of measurement.
• Original
The time of transmission is defined by the time saved with the message in the
file.
• Specified
The user sets the time explicitly in milliseconds since the start of measurement.
In all three cases the time spacing between messages within the file is preserved. If it
is less than one millisecond, transmission is delayed accordingly.
The configuration is lost when a replay block is removed from the measurement
setup (by selecting the command Delete configuration in the popup menu). This
only affects the options set in the dialog box. The replay file itself is not deleted.
4.3.1 Replay of Environment Variables
The replay block provides you with the opportunity to inject both binary and ASCII
files into the simulation setup.
Thus, you can edit ASCII log files with a conventional text editor before you play them
back in the replay block. In particular, you can also generate your own ASCII files
with the sequences of values of certain environment variables to inject them into the
measurement through the replay block.
The replay block reads an ASCII file line-by-line. Enter the number format in the first
line. If the integer values in your file are to be interpreted as decimal values, you
write:
base dec
© Vector Informatik GmbH CANoe/DENoe Manual Version 4.1.1