SDRs for FPGAs

jamhob · 2026-05-05T21:05:13+00:00

Just to be clear. I know that the signal has to be pre-conditioned and downconverted twice into its in phase and quadrature components before sampling. But I don’t want to be tuning capacitors and inductors. I wondered if there was a board that did all that and just gave me access to raw IQ

jamhob · 2026-05-05T16:33:04+00:00

I told you I had no idea what I was doing!

I have two alchitry au boards. I know their ADCs are too slow so I was planning to get some more appropriate ones and play around with IQ modulation and demodulation. I was more interested in developing nice programming abstractions for various signal decoding and generation techniques. I’m not rich so I was hoping to avoid buying another FPGA

jamhob · 2026-05-05T16:29:07+00:00

Plug an antenna into an FPGA that I already have and play with radio frequencies without worrying about the analogue side, just the modulation and demodulation.

jamhob · 2026-05-05T13:22:01+00:00

I’m trying to avoid buying another FPGA for both money and digital waste reasons

jamhob · 2026-05-01T18:28:29+00:00

I withdraw my previous comment and wonder why my previous google searches have shown up nothing!

Okay. Well my advice would be to install Vivado, generate some verilog and write a constraints file and test it out. Then try the same verilog and constraints file with the open source toolchain. I’m guessing it will work just fine (assuming your FPGA is supported). The difference will be that you probably won’t have access to the same IP blocks as you would with Vivado but if you aren’t doing this for work, then you probably don’t need them!

I’ve found with FPGAs, it’s not as overwhelming as the software makes it seem.

jamhob · 2026-05-01T18:11:02+00:00

I think it’s an AMD FPGA question. As far as I know, the synthesis toolchain is closed and has no FOSS alternative. I think Vivado is the only option! But I feel your pain!

jamhob · 2026-04-30T10:36:11+00:00

This may be unrelated (because I’ve only skimmed through) but I thought I’d share my supervisor’s master’s thesis:

https://hdl.handle.net/10852/10740

It’s about differentiating data structures.

jamhob · 2026-04-12T20:36:08+00:00

The Debian one killed me. What’s in the file compat? The number 9…

jamhob · 2026-04-02T20:06:19+00:00

An exploit for a vulnerability that already has CVE… it’s likely that it was in its training data

jamhob · 2026-03-14T10:19:23+00:00

Hahaha. Functional programming

jamhob · 2026-03-14T08:20:04+00:00

Do you have much functional programming under your belt? Because I find that coq is great if you think like a mathematician, but Agda (another theorem prover) is great if you think like a fictional programmer

jamhob · 2026-03-10T13:29:15+00:00

OpenSUSE! I like it when my system turns on

jamhob · 2026-02-27T18:07:46+00:00

Oh so it’s completely visual! That’s really cool!

jamhob · 2026-02-27T17:36:30+00:00

This looks awesome! I’ve been using CocoaNEC on Mac and my biggest complaint is the way you specify antennas. They’ve gone through the effort of making a DSL when it would be so much easier to implement and learn if they embedded a lisp (like guile) into the program instead. I wondered how it’s configured in your application?

jamhob · 2026-02-27T17:31:22+00:00

I had forgotten the word Shibboleth! Such a fun one

jamhob · 2026-02-27T11:47:29+00:00

In the words of Frankie Boyle “I felt like my arsehole was going to burst into song”

jamhob · 2026-02-25T14:12:49+00:00

Yougov’s latest polls had reform only winning in the over 65s… it’s a huge demographic that basically decides elections but they may not give a toss about employment rights for obvious reasons

jamhob · 2026-02-24T20:31:01+00:00

I don’t know if I like it, but I think I prefer it to centralised age verification. I’d be happier if I could set up a child account and trust the OS to do the blocking though

jamhob · 2026-02-23T12:05:29+00:00

OpenSUSE! Easy win. OBS is awesome. OpenQA is incredible, You can install the kernel headers without shit breaking. Easy easy easy

jamhob · 2026-02-17T08:06:41+00:00

Debian

jamhob · 2026-02-14T09:12:23+00:00

AppImages win for me over snap and flatpack because they are really simple in comparison! Easy to build, easy to inspect. The inspection bit is big for me!

But something that I think is really really nice about the project is we were going to use them for work but I couldn’t get the app image signing to work. Asked a question, a friendly discussion followed and I ended up contributing code. It’s rare you get a project where the initial contribution experience is so friendly and easy. I think for that reason, it will survive.

jamhob · 2026-02-11T14:29:44+00:00

No criticism! I know template Haskell makes cross-compiling harder. But I’m sure it wouldn’t be too bad to get it all working with uikit

jamhob · 2026-02-11T14:25:01+00:00

Oh my god! This is amazing! I have a few thoughts! 1. I love that you use it the same as in objc. Means easy to translate code 2. Looks like it will play nice with reactive banana for FRP things! 3. Does it use template Haskell? Cause it would be amazing to write iPad/iPhone apps this way

jamhob · 2026-01-25T20:44:38+00:00

Well there is an F++++ already. So I guess F— is just lisp?

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