Matter Linux Microwave Oven Example#
An example showing the use of Matter on the Linux. The document will describe how to build and run Matter Linux Microwave Oven Example on Raspberry Pi. This doc is tested on Ubuntu for Raspberry Pi Server 20.04 LTS (aarch64) and Ubuntu for Raspberry Pi Desktop 20.10 (aarch64)
Building#
Install tool chain
$ sudo apt-get install git gcc g++ python pkg-config libssl-dev libdbus-1-dev libglib2.0-dev ninja-build python3-venv python3-dev unzip
Build the example application:
$ cd ~/connectedhomeip/examples/microwave-oven-app/linux $ git submodule update --init $ source third_party/connectedhomeip/scripts/activate.sh $ gn gen out/debug $ ninja -C out/debug
To delete generated executable, libraries and object files use:
$ cd ~/connectedhomeip/examples/microwave-oven-app/linux $ rm -rf out/
Build the example with pigweed RPC
$ cd ~/connectedhomeip/examples/microwave-oven-app/linux $ git submodule update --init $ source third_party/connectedhomeip/scripts/activate.sh $ gn gen out/debug --args='import("//with_pw_rpc.gni")' $ ninja -C out/debug
Commandline arguments#
--wifi
Enables WiFi management feature. Required for WiFi commissioning.
--thread
Enables Thread management feature, requires ot-br-posix dbus daemon running. Required for Thread commissioning.
--ble-device <interface id>
Use specific bluetooth interface for BLE advertisement and connections.
interface id
: the number afterhci
when listing BLE interfaces byhciconfig
command, for example,--ble-device 1
means usinghci1
interface. Default:0
.
Running the Complete Example on Raspberry Pi 4#
If you want to test Echo protocol, please enable Echo handler
gn gen out/debug --args='chip_app_use_echo=true' ninja -C out/debug
Prerequisites
A Raspberry Pi 4 board
A USB Bluetooth Dongle, Ubuntu desktop will send Bluetooth advertisement, which will block CHIP from connecting via BLE. On Ubuntu server, you need to install
pi-bluetooth
via APT.Ubuntu 20.04 or newer image for ARM64 platform.
Building
Follow Building section of this document.
Running
[Optional] Plug USB Bluetooth dongle
Plug USB Bluetooth dongle and find its bluetooth device number. The number after
hci
is the bluetooth device number,1
in this example.$ hciconfig hci1: Type: Primary Bus: USB BD Address: 00:1A:7D:AA:BB:CC ACL MTU: 310:10 SCO MTU: 64:8 UP RUNNING PSCAN ISCAN RX bytes:20942 acl:1023 sco:0 events:1140 errors:0 TX bytes:16559 acl:1011 sco:0 commands:121 errors:0 hci0: Type: Primary Bus: UART BD Address: B8:27:EB:AA:BB:CC ACL MTU: 1021:8 SCO MTU: 64:1 UP RUNNING PSCAN ISCAN RX bytes:8609495 acl:14 sco:0 events:217484 errors:0 TX bytes:92185 acl:20 sco:0 commands:5259 errors:0
Run Linux Lighting Example App
$ cd ~/connectedhomeip/examples/microwave-oven-app/linux $ sudo out/debug/chip-microwave-oven-app --ble-device [bluetooth device number] # In this example, the device we want to use is hci1 $ sudo out/debug/chip-microwave-oven-app --ble-device 1
Test the device using ChipDeviceController on your laptop / workstation etc.
Running RPC Console#
As part of building the example with RPCs enabled the chip_rpc python interactive console is installed into your venv. The python wheel files are also created in the output folder: out/debug/chip_rpc_console_wheels. To install the wheel files without rebuilding:
pip3 install out/debug/chip_rpc_console_wheels/*.whl
To use the chip-rpc console after it has been installed run:
chip-console -s localhost:33000 -o /<YourFolder>/pw_log.out
Then you can Get and Set the light using the RPCs:
rpcs.chip.rpc.Lighting.Get()
rpcs.chip.rpc.Lighting.Set(on=True, level=128, color=protos.chip.rpc.LightingColor(hue=5, saturation=5))
Device Tracing#
Device tracing is available to analyze the device performance. To turn on tracing, build with RPC enabled. See Building with RPC enabled.
Obtain tracing json file.
$ ./{PIGWEED_REPO}/pw_trace_tokenized/py/pw_trace_tokenized/get_trace.py -s localhost:33000 \
-o {OUTPUT_FILE} -t {ELF_FILE} {PIGWEED_REPO}/pw_trace_tokenized/pw_trace_protos/trace_rpc.proto