rp2040/raspberrypi-pico-w: update submodule to avoid invaild firmware
The cyw43-driver is a submodule in the pick-sdk, if the submodule is
not updated, the dummy firmware driver will be used, update the document
to correct the setup flow.
${PICO_SDK_PATH}/lib/cyw43-driver/firmware/43439A0-7.95.49.00.combined
@@ -44,9 +44,11 @@ There is currently no direct user mode access to these RP2040 hardware features:
Installation
============
-1. Download Raspberry Pi Pico SDK
+1. Download Raspberry Pi Pico SDK and update submodule(cyw43-driver)
- $ git clone -b 1.1.2 https://github.com/raspberrypi/pico-sdk.git
+ $ git clone -b 1.4.0 https://github.com/raspberrypi/pico-sdk.git
+ $ cd pico-sdk
+ $ git submodule update --init --recursive lib/cyw43-driver
2. Set PICO_SDK_PATH environment variable
