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