BeagleConnect™ Greybus demo using BeagleConnect™ Freedom and BeaglePlay¶
BeaglePlay CC1352 Firmware¶
Build (Download and Setup Zephyr for BeaglePlay)¶
Install prerequisites
cd sudo apt update sudo apt install --no-install-recommends -y \ gperf \ ccache dfu-util \ libsdl2-dev \ libxml2-dev libxslt1-dev libssl-dev libjpeg62-turbo-dev libmagic1 \ libtool-bin autoconf automake libusb-1.0-0-dev \ python3-tk python3-virtualenv
Download the latest Zephyr Release, extract it and cleanup
sudo wget https://github.com/zephyrproject-rtos/sdk-ng/releases/download/v0.16.3/zephyr-sdk-0.16.3_linux-aarch64_minimal.tar.xz tar xf zephyr-sdk-0.16.3_linux-aarch64_minimal.tar.xz rm zephyr-sdk-0.16.3_linux-aarch64_minimal.tar.xz
Run the Zephyr SDK Setup Script
./zephyr-sdk-0.16.3/setup.sh -t arm-zephyr-eabi -c
Download and Initialize West. (Zephyr’s meta-tool)
Note
You may want to add /home/debian/.local/bin to your .bashrc file to make the West command available after a reboot
pip3 install --user -U west export PATH="/home/debian/.local/bin:$PATH" west init -m https://git.beagleboard.org/beagleconnect/zephyr/zephyr --mr sdk-next zephyr-beagle-cc1352-sdk cd $HOME/zephyr-beagle-cc1352-sdk
Setup a Python Virtual Environment and add our PATH Variables
virtualenv zephyr-beagle-cc1352-env echo "export ZEPHYR_TOOLCHAIN_VARIANT=zephyr" >> $HOME/zephyr-beagle-cc1352-sdk/zephyr-beagle-cc1352-env/bin/activate echo "export ZEPHYR_SDK_INSTALL_DIR=$HOME/zephyr-sdk-0.16.3" >> $HOME/zephyr-beagle-cc1352-sdk/zephyr-beagle-cc1352-env/bin/activate echo "export ZEPHYR_BASE=$HOME/zephyr-beagle-cc1352-sdk/zephyr" >> $HOME/zephyr-beagle-cc1352-sdk/zephyr-beagle-cc1352-env/bin/activate echo 'export PATH=$HOME/zephyr-beagle-cc1352-sdk/zephyr/scripts:$PATH' >> $HOME/zephyr-beagle-cc1352-sdk/zephyr-beagle-cc1352-env/bin/activate echo "export BOARD=beagleplay_cc1352" >> $HOME/zephyr-beagle-cc1352-sdk/zephyr-beagle-cc1352-env/bin/activate source $HOME/zephyr-beagle-cc1352-sdk/zephyr-beagle-cc1352-env/bin/activate
Update West
west update west zephyr-export
Install Python Prerequisites
pip3 install -r zephyr/scripts/requirements-base.txt
Activate the Zephyr build environment
NOTE - If you exit and come back, you’ll need to reactivate your Zephyr build environment.
source $HOME/zephyr-beagle-cc1352-sdk/zephyr-beagle-cc1352-env/bin/activate
Verify Zephyr setup for BeaglePlay
(zephyr-beagle-cc1352-env) debian@BeaglePlay:~$ cmake --version cmake version 3.22.1 CMake suite maintained and supported by Kitware (kitware.com/cmake). (zephyr-beagle-cc1352-env) debian@BeaglePlay:~$ python3 --version Python 3.9.2 (zephyr-beagle-cc1352-env) debian@BeaglePlay:~$ dtc --version Version: DTC 1.6.0 (zephyr-beagle-cc1352-env) debian@BeaglePlay:~$ west --version West version: v0.14.0 (zephyr-beagle-cc1352-env) debian@BeaglePlay:~$ ./zephyr-sdk-0.16.3/arm-zephyr-eabi/bin/arm-zephyr-eabi-gcc --version arm-zephyr-eabi-gcc (Zephyr SDK 0.16.3) 12.1.0 Copyright (C) 2022 Free Software Foundation, Inc. This is free software; see the source for copying conditions. There is NO warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
Clone CC1352 Firmware at top level: https://git.beagleboard.org/gsoc/greybus/cc1352-firmware
cd ~ git clone https://git.beagleboard.org/gsoc/greybus/cc1352-firmware
Build the Firmware
west build -b beagleplay_cc1352 -p always cc1352-firmware
You can now find the built firmware at build/zephyr/zephyr.bin
Flash¶
Ensure the gb-beagleplay driver isn’t blocking the serial port.
debian@BeaglePlay:~$ echo " fdtoverlays /overlays/k3-am625-beagleplay-bcfserial-no-firmware.dtbo" | sudo tee -a /boot/firmware/extlinux/extlinux.conf debian@BeaglePlay:~$ sudo shutdown -r now
Note
The default password is temppwd.
Clone cc1352-flasher
cd git clone https://git.beagleboard.org/beagleconnect/cc1352-flasher.git
Flash Firmware
python $HOME/cc1352-flasher --beagleplay $HOME/zephyr-beagle-cc1352-sdk/build/zephyr/zephyr.bin
Ensure the gb-beagleplay driver is set to load.
sudo sed -e '/bcfserial-no-firmware/ s/^#*/#/' -i /boot/firmware/extlinux/extlinux.conf sudo shutdown -r now
Building gb-beagleplay Kernel Module¶
Note
gb-beagleplay is still not merged upstream and thus needs to be built seperately. This should not be required in the future.
Disable bcfserial driver. Add
quiet module_blacklist=bcfserialto kernel parameters at/boot/firmware/extlinux/extlinux.conf(line 2) as shown below.
label Linux eMMC kernel /Image append root=/dev/mmcblk0p2 ro rootfstype=ext4 rootwait net.ifnames=0 quiet module_blacklist=bcfserial ① fdtdir / #fdtoverlays /overlays/<file>.dtbo #fdtoverlays /overlays/k3-am625-beagleplay-bcfserial-no-firmware.dtbo fdtoverlays /overlays/k3-am625-beagleplay-release-mikrobus.dtbo initrd /initrd.img①
quiet module_blacklist=bcfserialhas been added to this line
Reboot
debian@BeaglePlay:~$ sudo shutdown -r now
Download the upstream module
debian@BeaglePlay:~$ git clone https://git.beagleboard.org/gsoc/greybus/beagleplay-greybus-driver.git debian@BeaglePlay:~$ cd beagleplay-greybus-driver
Install dependencies
debian@BeaglePlay:~$ sudo apt install linux-headers-$(uname -r)
Build Kernel moudle
debian@BeaglePlay:~/beagleplay-greybus-driver$ make make -C /lib/modules/5.10.168-ti-arm64-r111/build M=/home/debian/beagleplay-greybus-driver modules make[1]: Entering directory '/usr/src/linux-headers-5.10.168-ti-arm64-r111' CC [M] /home/debian/beagleplay-greybus-driver/gb-beagleplay.o MODPOST /home/debian/beagleplay-greybus-driver/Module.symvers CC [M] /home/debian/beagleplay-greybus-driver/gb-beagleplay.mod.o LD [M] /home/debian/beagleplay-greybus-driver/gb-beagleplay.ko make[1]: Leaving directory '/usr/src/linux-headers-5.10.168-ti-arm64-r111'
Flashing BeagleConnect Freedom Greybus Firmware¶
Connect BeagleConnect Freedom to BeaglePlay
Build the BeagleConnect Freedom firmware
west build -b beagleconnect_freedom modules/greybus/samples/subsys/greybus/net/ -p -- -DOVERLAY_CONFIG=overlay-802154-subg.conf
Flash the BeagleConnect Freedom
west flash
Run the Demo¶
Connect BeagleConnect Freedom.
See shell output using tio
tio /dev/ACM0Press the Reset button on BeagleConnect Freedom
Verify that greybus is working by checking the tio output. It should look as follows:
[00:00:00.000,976] <dbg> greybus_platform_bus: greybus_init: probed greybus: 0 major: 0 minor: 1 [00:00:00.001,068] <dbg> greybus_platform_string: greybus_string_init: probed greybus string 4: hdc2010 [00:00:00.001,129] <dbg> greybus_platform_string: greybus_string_init: probed greybus string 3: opt3001 [00:00:00.001,190] <dbg> greybus_platform_string: greybus_string_init: probed greybus string 2: Greybus Service Sample Application [00:00:00.001,251] <dbg> greybus_platform_string: greybus_string_init: probed greybus string 1: Zephyr Project RTOS [00:00:00.001,251] <dbg> greybus_platform_interface: greybus_interface_init: probed greybus interface 0 [00:00:00.001,281] <dbg> greybus_platform_bundle: greybus_bundle_init: probed greybus bundle 1: class: 10 [00:00:00.001,312] <dbg> greybus_platform_bundle: greybus_bundle_init: probed greybus bundle 0: class: 0 [00:00:00.001,342] <dbg> greybus_platform_control: greybus_control_init: probed cport 0: bundle: 0 protocol: 0 [00:00:00.001,434] <dbg> greybus_platform: gb_add_cport_device_mapping: added mapping between cport 1 and device gpio@40022000 [00:00:00.001,464] <dbg> greybus_platform_gpio_control: greybus_gpio_control_init: probed cport 1: bundle: 1 protocol: 2 [00:00:00.001,556] <dbg> greybus_platform: gb_add_cport_device_mapping: added mapping between cport 2 and device sensor-switch [00:00:00.001,556] <dbg> greybus_platform_i2c_control: greybus_i2c_control_init: probed cport 2: bundle: 1 protocol: 3 *** Booting Zephyr OS build bcf-sdk-0.2.1-3384-ge76584f824c8 *** [00:00:00.009,704] <dbg> greybus_service: greybus_service_init: Greybus initializing.. [00:00:00.009,765] <dbg> greybus_manifest: identify_descriptor: cport_id = 0 [00:00:00.009,796] <dbg> greybus_manifest: identify_descriptor: cport_id = 1 [00:00:00.009,826] <dbg> greybus_manifest: identify_descriptor: cport_id = 2 [00:00:00.009,857] <dbg> greybus_transport_tcpip: gb_transport_backend_init: Greybus TCP/IP Transport initializing.. [00:00:00.010,101] <inf> greybus_transport_tcpip: CPort 0 mapped to TCP/IP port 4242 [00:00:00.014,709] <inf> greybus_transport_tcpip: CPort 1 mapped to TCP/IP port 4243 [00:00:00.014,953] <inf> greybus_transport_tcpip: CPort 2 mapped to TCP/IP port 4244 [00:00:00.015,075] <inf> greybus_transport_tcpip: Greybus TCP/IP Transport initialized [00:00:00.015,136] <inf> greybus_manifest: Registering CONTROL greybus driver. [00:00:00.015,167] <dbg> greybus: _gb_register_driver: Registering Greybus driver on CP0 [00:00:00.015,411] <inf> greybus_manifest: Registering GPIO greybus driver. [00:00:00.015,411] <dbg> greybus: _gb_register_driver: Registering Greybus driver on CP1 [00:00:00.015,625] <inf> greybus_manifest: Registering I2C greybus driver. [00:00:00.015,625] <dbg> greybus: _gb_register_driver: Registering Greybus driver on CP2 [00:00:00.015,777] <inf> greybus_service: Greybus is active
Load gb-beagleplay
debian@BeaglePlay:~$ sudo insmod $HOME/beagleplay-greybus-driver/gb-beagleplay.ko
Check iio_device to verify that greybus node has been detected:
debian@BeaglePlay:~$ iio_info Library version: 0.24 (git tag: v0.24) Compiled with backends: local xml ip usb IIO context created with local backend. Backend version: 0.24 (git tag: v0.24) Backend description string: Linux BeaglePlay 5.10.168-ti-arm64-r111 #1bullseye SMP Tue Sep 26 14:22:20 UTC 2023 aarch64 IIO context has 2 attributes: local,kernel: 5.10.168-ti-arm64-r111 uri: local: IIO context has 2 devices: iio:device0: adc102s051 2 channels found: voltage1: (input) 2 channel-specific attributes found: attr 0: raw value: 4068 attr 1: scale value: 0.805664062 voltage0: (input) 2 channel-specific attributes found: attr 0: raw value: 0 attr 1: scale value: 0.805664062 No trigger on this device iio:device1: hdc2010 3 channels found: temp: (input) 4 channel-specific attributes found: attr 0: offset value: -15887.515151 attr 1: peak_raw value: 28928 attr 2: raw value: 28990 attr 3: scale value: 2.517700195 humidityrelative: (input) 3 channel-specific attributes found: attr 0: peak_raw value: 43264 attr 1: raw value: 41892 attr 2: scale value: 1.525878906 current: (output) 2 channel-specific attributes found: attr 0: heater_raw value: 0 attr 1: heater_raw_available value: 0 1 No trigger on this device