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Found 2 results

  1. Hello, i have a new created petalinux project for the zynq processor (Arty-Z7-20). I'am not using a digilent bsp file to configure the project, because i have a simple selfmade design and i like to start with a minimalistic Linux. I like to support Linux pthread and sockets, thats all. If i implement a tcp/ip Server and if i use the select Routine to wait for incomming data then the "select" Routine does not return, even if i receive data. In an other thread here in this Forum i discuss a similar issue. There i have a Problem with the "uio" Interrupt handling, because the blocking read does not return. So i think, that these two different issues have the same reason. My Linux image is not able to generate Events which can Trigger the "select" Statement. How can i enable the petalinux ability to handle "select"-commands? Thank you...
  2. Hello, I have found this topic with script for counting edges of digital signals and I wonder if it's possible to modify it somehow (or use completely different approach) to read quadrature encoder signals with Analog Discovery? Most important thing, I think, is that I have to compare signals state at current event (i.e. I have "1" on signal A and need to know what is the state of B signal in that particular moment) and be able to compare it with previous state (event) to decide if I should increment or decrement my counter. And it should be triggered with both edges but I assume that trigger options on DIO line decides when events are generated. Is it possible to capture and count edges without sample count limit? I mean something like hardware triggering on digital inputs instead of starting on first trigger and sampling defined number of samples with defined frequency (Stream mode). At the moment it looks more like signals recording and post-processing (offline) and I wonder if it is possible online to execute encoder script live on each trigger? It's not a must but would be nice And one more thing - I have downgraded my WaveForms to version from mentioned topic because in newer version there is no Stream mode. Was it renamed or replaced by something better?