be20512f17
This commit add two constants and updates the comment about ALP. It was not easy to find the definition of ALP but after searching I found what I believe is the correct definition in section 3.3 "Clocks" in the referenced document below. Active Low Power (ALP): Supplied by an internal or external oscillator. This clock is requested by cores when accessing backplane registers in other cores or when performing minor computations. When an external crystal is used to provide reference clock, ALP clock frequency is determined by the frequency of the external oscillator. A 37.4 MHz reference clock is recommended. Refs: https://www.infineon.com/dgdl/Infineon-AN214828_Power_Consumption_Measurements-ApplicationNotes-v03_00-EN.pdf?fileId=8ac78c8c7cdc391c017d0d2803a4630d
cyw43
WIP driver for the CYW43439 wifi chip, used in the Raspberry Pi Pico W. Implementation based on Infineon/wifi-host-driver.
Current status
Working:
- Station mode (joining an AP).
- Sending and receiving Ethernet frames.
- Using the default MAC address.
embassy-netintegration.
TODO:
- AP mode (creating an AP)
- GPIO support (used for the Pico W LED)
- Scanning
- Setting a custom MAC address.
- RP2040 PIO driver for the nonstandard half-duplex SPI used in the Pico W. Probably porting this. (Currently bitbanging is used).
- Using the IRQ pin instead of polling the bus.
- 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-runcd examples/rpi-pico-wWIFI_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 or http://www.apache.org/licenses/LICENSE-2.0)
- MIT license (LICENSE-MIT or http://opensource.org/licenses/MIT)
at your option.