Message Strobe: Difference between revisions

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== Example Flowgraph ==
== Example Flowgraph ==
=== Example 1 ===
In this example, a Message Strobe block sends the string "Demo" once per second.
In this example, a Message Strobe block sends the string "Demo" once per second.


[[File:PUB_SUB_msg_demo.png]]
[[File:PUB_SUB_msg_demo.png]]


 
=== Example 2 ===


In another example, we change the frequency of a signal source to 1kHz after 5 seconds.
In another example, we change the frequency of a signal source to 1kHz after 5 seconds.
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[[File:Message_strobe_settings.PNG | 400px]]
[[File:Message_strobe_settings.PNG | 400px]]
=== Example 3 ===
Another example that uses a Message Strobe block can be found in [https://github.com/gnuradio/gnuradio/blob/master/gr-blocks/examples/msg_passing/strobe.grc gr-blocks/examples/msg_passing/strobe.grc].


== Source Files ==
== Source Files ==

Revision as of 10:35, 29 December 2021

Send message at defined interval.

Takes a PMT message and sends it out every milliseconds. Useful for testing/debugging the message system.

The PMT to send seems to be settable also from the input port (please confirm that)

Parameters

(R): Run-time adjustable

Message PMT (R)
The message to send as a PMT.
Period (ms) (R)
The specified time interval after which data is sent at the output repeatedly.

Example Flowgraph

Example 1

In this example, a Message Strobe block sends the string "Demo" once per second.

PUB SUB msg demo.png

Example 2

In another example, we change the frequency of a signal source to 1kHz after 5 seconds.

Signal source freq msg port.PNG

The message strobe settings in the above example are as follows:

Message strobe settings.PNG

Example 3

Another example that uses a Message Strobe block can be found in gr-blocks/examples/msg_passing/strobe.grc.

Source Files

C++ files
[1]
Header files
[2]
Public header files
[3]
Block definition
[4]