57 lines
1.7 KiB
Markdown
57 lines
1.7 KiB
Markdown
# cyw43
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WIP driver for the CYW43439 wifi chip, used in the Raspberry Pi Pico W. Implementation based on [Infineon/wifi-host-driver](https://github.com/Infineon/wifi-host-driver).
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## Current status
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Working:
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- Station mode (joining an AP).
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- Sending and receiving Ethernet frames.
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- Using the default MAC address.
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- [`embassy-net`](https://embassy.dev) integration.
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- RP2040 PIO driver for the nonstandard half-duplex SPI used in the Pico W.
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- Using IRQ for device events
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- GPIO support (for LED on the Pico W)
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TODO:
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- AP mode (creating an AP)
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- Scanning
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- Setting a custom MAC address.
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- Investigate why can [this](https://github.com/raspberrypi/pico-sdk/tree/master/src/rp2_common/pico_cyw43_driver) use higher PIO speed.
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- Bus sleep (unclear what the benefit is. Is it needed for IRQs? or is it just power consumption optimization?)
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## Running the example
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- `cargo install probe-run`
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- `cd examples/rpi-pico-w`
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- `WIFI_NETWORK=MyWifiNetwork WIFI_PASSWORD=MyWifiPassword cargo run --release`
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After a few seconds, you should see that DHCP picks up an IP address like this
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```
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11.944489 DEBUG Acquired IP configuration:
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11.944517 DEBUG IP address: 192.168.0.250/24
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11.944620 DEBUG Default gateway: 192.168.0.33
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11.944722 DEBUG DNS server 0: 192.168.0.33
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```
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The example implements a TCP echo server on port 1234. You can try connecting to it with:
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```
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nc 192.168.0.250 1234
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```
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Send it some data, you should see it echoed back and printed in the firmware's logs.
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## License
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This work is licensed under either of
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- Apache License, Version 2.0 ([LICENSE-APACHE](LICENSE-APACHE) or
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<http://www.apache.org/licenses/LICENSE-2.0>)
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- MIT license ([LICENSE-MIT](LICENSE-MIT) or <http://opensource.org/licenses/MIT>)
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at your option.
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