Matter MW320 All Clusters Example Application#

The example is based on Matter and the NXP MW320 SDK to demonstrates device commissioning and cluster control over a low-power, WiFi 802.11n network.

Introduction#

MW320

The example targets the NXP MW320 WiFi Micro controller Soc development kit.

Building#

Building the example application is quite straightforward. It can be done via following commands:

$ cd examples/all-clusters-app/nxp/mw320/
$ git submodule update --init
$ source third_party/connectedhomeip/scripts/activate.sh
$ gn gen out/debug
$ ninja -v -C out/debug

Example application binary file “chip-mw320-all-clusters-app.bin” will be generated under directory “out/debug”.

Note:

  1. “git submodule update –init” only needs to be issued for the first time in order to download MW320 SDK for Matter.

  2. “source third_party/connectedhomeip/scripts/activate.sh” can be omitted if your environment is already setup without issues.

Tinycrypt ECC operations:

Note: This solution is temporary.

In order to use the tinycrypt ecc operations, use the following build arguments:

$ gn gen out/debug --args='treat_warnings_as_errors=false mbedtls_repo="//third_party/connectedhomeip/third_party/nxp/libs/mbedtls" chip_crypto="tinycrypt"'

Flashing#

Connect MW320 to Ubuntu USB port and open Linux text-based serial port communications program at second USB interface (/dev/ttyUSB1):

$ TERM=linux minicom -D /dev/ttyUSB1 -b 115200

Prepare MW320 download firmware image:

$ ln -sf third_party/connectedhomeip/third_party/nxp/mw320_sdk/repo mw320_sdk
$ mw320_sdk/tools/mw_img_conv/bin/mw_img_conv mcufw out/debug/chip-mw320-all-clusters-app.bin out/debug/all-cluster-mw320.mcufw.bin 0x1F010000
$ cp out/debug/all-cluster-mw320.mcufw.bin mw320_sdk/mw320_matter_flash/Matter/.

Install OpenOCD (Open On-Chip Debugger):

$ sudo apt-get install openocd

Flashing firmware image to MW320:

$ cd mw320_sdk/mw320_matter_flash
$ sudo python2 flashprog.py -l Matter/layout-4m.txt --boot2 Matter/boot2.bin --wififw Matter/mw32x_uapsta_W14.88.36.p172.bin --mcufw Matter/all-cluster-mw320.mcufw.bin -r

After MW320 is reset, console will allow you to enter commands:

MW320_CONSOLE