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From: | Ed Coleman |
Subject: | Re: [Discuss-gnuradio] Seeking a method to expose a floating point value |
Date: | Tue, 19 Jul 2016 16:11:15 -0400 |
Hello Marcus:
Thank you for the quick reply. My initial thought was that the external code would query the grc block at a rate of 32kHz. I WAS assuming that there would be a unique value available every 1/32000s. Since this is not the case, I'm left wondering how best to get all 32000samples per second out of this block and into an array in python so that I can manipulate the data. It seems as though this may be a more in depth question than I realized.
-Ed
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Hi Ed,
to what do you need that number "delivered"? That's the interesting point here; whether your external code "polls" a function, or expects to get a message of some sorts, or listens on a socket, or...
Also note that it's not really like there's a constant "trickle" of random numbers, one every 1s/32000; GNU Radio is buffer-based, meaning that throttle gets a block of e.g. 4096 input items, passes them, and then waits 4096/32000 until it looks for new input.
Best regards,
Marcus
Considering the simple flow graph attached, a random number is generated at a sample rate of 32kHz. I’m seeking a method to ‘expose’ the floating point number to external python code. This code would need to be updated at every 'tic' of the sample rate. Initially I had considered using the probe function but, from what I have read, it appears that is not appropriate for such a fast update rate. Any suggestions would be appreciated._______________________________________________ Discuss-gnuradio mailing list address@hidden https://lists.gnu.org/mailman/listinfo/discuss-gnuradio
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