[Solved] Reset a variable at fixed frequency

Question

Hi all,I have a data streaming firmware and to keep the stream alive I must reset a counter before it reaches a fixed value.Is there a way to perform this operation with CubeMonitor while monitoring other values?Thank youWalter

Thierry · Accepted Answer

Thanks your your answer. I have modified your flow accordingly, please find attached flow.

Here are the updates done in the flow :

The main update concerns the way the data_sample_not_pinged_count & stream_status are written. Instead of using a write panel, I use 2 template nodes which forces the values for these 2 variables from the flow editor. These 2 template nodes are triggered by :
- the start button for stream_status.
- an inject node which is resetting data_sample_not_pinged_count every 1 second.
- Detailed explanations on how to write values programatically are provided in this thread :https://community.st.com/s/question/0D53W000000ayg1SAA/hello-how-is-it-possible-to-change-a-variable-by-pressing-a-buttoni-just-can-change-a-variable-by-using-the-write-panel-butregards.
Then I remove some useless nodes (write node, variable node that were used to write the data_sample_not_pinged_count & stream_status variables)
Finally I also remove one useless switch node, as you can have several rules inside a single switch.

There are plenty of good document to read. The first one is the STM32CubeMonitor wiki available at

https://wiki.st.com/stm32mcu/wiki/STM32CubeMonitor:STM32CubeMonitor_overview. It is updated on regular basis with questions/answer coming from the this forum.

If you want more explanation on node-red framework, there is the node-red website which provides plenty of information from beginner to expert : https://nodered.org/docs/

Hope it answers your question

Thierry · Answer

Hi Walter,Yes it should be possible since your know the counter address. Indeed as STM32CubeMonitor is able to read but also write some values at various addresses, then you can implement a logic in your flow that reset your counter when a condition is reached.

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