在 2023年9月11日星期一 CST 下午7:22:44，Bogdan Reshetnikov 写道：
> Good day everyone! I hope you are doing well.
>
> I am an EE undergrad intern at an RF design company's software
> department, currently tasked with controlling a HackRF One SDR with a
> touchscreen display and a Raspberry Pi Zero (flashed with PiSDR because
> it has gnuradio3.9) running Python 3.9. I am a total beginner in GNU
> Radio, but I have intermediate knowledge of writing various interfaces
> in Python.
>
> The RPI runs a threaded script that receives UART a command from the
> display, parses it, and sends a {"parameter": value} PMT pair through
> ZMQ PUB socket.
> It also runs a GNU Radio flowchart script in parallel that receives the
> packet through ZMQ SUB Message source and passes it onto a Message to
> Variable block.
> This setup works great for modifying a single variable that's specified
> in the MesgToVar block, but it breaks down for multiple variables, since
> the <name> from the message pair is ignored.
>
> My current idea is to write an Embedded Python Block that would act as a
> "message multiplexer": it would parse the <name> part and issue a
> message from an according output port. This would mean updating the EPB
> code for every new variable, but that doesn't sound problematic.
>
> Does this sound like a nice approach? Are there any better alternatives
> already present? Let me know what you think. Stay safe!
>
> Bogdan
>
>
I have a similar project, modify multiple parameters with one block. But it's a
different case: I need to change variable with python block, so the solution is
simple to me: just write multiple message output port and use separate message
to var block and it works fine. For your situation, writing a "message
multiplexer" is by far the best idea I can think. BTW, my project address is
https://github.com/Bob0111/HackRF-mutiple-freqeuncy-FM-transmitter if you have
any interest, welcome to view that.
Bob
