TCP over Wifi for Raspberry Pi Pico W in TinyGo about cyw43439 HOT 13 CLOSED

@Evilran, not working yet. Progress has been slow for a couple weeks, but now continuing...

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You're welcome. The cyw43 driver is actually working really good. We used the Rust cyw43 driver for reference. Very clean implementation to copy from. rp2040 has PIO programming where you can offload your hot-loop to hardware, so all the bit-banging across the SPI bus happens from hardware (PIO), not from the software (driver). Performance should be on-par with Rust driver. I'm anxious to get some real TCP/IP perf numbers; need to find an iperf port we can run from TinyGo.

Bluetooth support is still missing in our TinyGo driver, but it uses a lot of the core work already in place for the wifi driver, so if someone has time to port bluetooth from the Rust ref driver, that would be great!

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Current status is cwy43 driver is working (sending/recv eth frames). @soypat is working on TCP/IP stack that sits on top of cwy43 driver. He's working out of this repo for the TCP/IP work: https://github.com/soypat/seqs. I'm working on porting cyrpto/tls package over from Go to TinyGo so we can use TLS sockets with cyw43.

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• bountysource/core#1586

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@abebeos Thank you for notifying us of this! Knowing bounty-source has an issue with payments I'd suggest no more payments be added to the link above until the issue be solved. Also fair warning to anyone who tries to solve this bounty that bounty-source may delay or omit payment.

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Just a brief note on driver status: it now connects to Wifi AP and receives Eth pkts. Link status isn't working, send Eth pkt is incomplete, and knowing when there is async work to do isn't working. Lots more work to do, including a small thing called the tcpip stack (lwip replacement). Thanks @soypat for the help and support.

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@soypat @scottfeldman Hi. What's the progress so far? It would be great if it worked!

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The Bounty Source links are down; seems they spent the bounty $$.

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The Bounty Source links are down; seems they spent the bounty $$.

Criminal liability: https://twitter.com/abebeos/status/1701925706526085243

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@scottfeldman - Fantastic updates! Thank you.

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Oh, and we haven't ported over the Wifi scanning code, if someone wants to work on that. That one should be pretty easy to port and test. Just need a pico-w...

If someone is interested in porting bluetooth or wifi scanning, we can help get your env set up.

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Fixed by #24. We now have a working TCP stack. What is left is to fix bugs. Let's get to testing it! Instructions on how to run it have been posted in the related tinygo issue

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This is huge... awesome work on it @soypat and others!

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