Add Yocto BeagleBone build layer for headless Debian-style image with ti-linux-kernel-dev + qca7k

yocto/README.md

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+# Yocto configuration for BeagleBone (esp-egycounter)
+
+This directory provides a Yocto setup that builds a BeagleBone image with:
+
+- Debian-style package management (`apt`, `dpkg`) via `package_deb`
+- No X server/UI stack
+- SSH (`openssh`), Python 3 (with stdlib modules), and `nginx`
+- USB client Ethernet gadget support (RNDIS/ECM style)
+- Kernel based on RobertCNelson `ti-linux-kernel-dev` configuration with added `qca7k` support
+- Integrated `battery-control` scripts from this repository
+- Included `pyPLC` and `OpenV2Gx`
+
+## Build quickstart (kas)
+
+From repository root:
+
+```bash
+cd yocto
+kas build kas-beaglebone.yml
+```
+
+The image target is `egycounter-image`.
+
+## Notes
+
+- `OpenV2Gx` is built as part of the Yocto build via the custom recipe.
+- `pyPLC` is installed to `/opt/pyplc`.
+- `battery-control` scripts are installed to `/opt/esp-egycounter/battery-control`.

yocto/kas-beaglebone.yml

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+header:
+  version: 14
+
+machine: beaglebone-yocto
+distro: egycounter-debian
+
+target:
+  - egycounter-image
+
+repos:
+  poky:
+    url: "https://git.yoctoproject.org/poky"
+    branch: kirkstone
+    layers:
+      meta:
+      meta-poky:
+      meta-yocto-bsp:
+
+  meta-openembedded:
+    url: "https://github.com/openembedded/meta-openembedded.git"
+    branch: kirkstone
+    layers:
+      meta-oe:
+      meta-networking:
+      meta-python:
+
+  meta-arm:
+    url: "https://git.yoctoproject.org/meta-arm"
+    branch: kirkstone
+    layers:
+      meta-arm:
+      meta-arm-toolchain:
+
+  meta-ti:
+    url: "https://git.yoctoproject.org/meta-ti"
+    branch: kirkstone
+    layers:
+      meta-ti-bsp:
+
+  meta-egycounter:
+    path: meta-egycounter
+
+local_conf_header:
+  egycounter-common: |
+    PACKAGE_CLASSES = "package_deb"
+    EXTRA_IMAGE_FEATURES += "package-management"

yocto/meta-egycounter/conf/distro/egycounter-debian.conf

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+require conf/distro/poky.conf
+
+DISTRO = "egycounter-debian"
+DISTRO_NAME = "egycounter Debian-style distro"
+
+PACKAGE_CLASSES = "package_deb"
+EXTRA_IMAGE_FEATURES += "package-management"
+
+# headless image
+DISTRO_FEATURES:remove = "x11 wayland opengl"
+
+VIRTUAL-RUNTIME_init_manager = "systemd"
+DISTRO_FEATURES:append = " systemd"
+DISTRO_FEATURES:remove = "sysvinit"
+
+# Prefer custom kernel recipe based on ti-linux-kernel-dev
+PREFERRED_PROVIDER_virtual/kernel = "linux-ti-rcn"
+
+# Work around host/bitbake combinations that fail in get_git_pkgv() during parsing
+GITPKGVTAG = "${PV}"

yocto/meta-egycounter/conf/layer.conf

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+# We have a conf and classes directory, add to BBPATH
+BBPATH .= ":${LAYERDIR}"
+
+# We have recipes-* directories, add to BBFILES
+BBFILES += "${LAYERDIR}/recipes-*/*/*.bb \
+            ${LAYERDIR}/recipes-*/*/*.bbappend"
+
+BBFILE_COLLECTIONS += "egycounter"
+BBFILE_PATTERN_egycounter = "^${LAYERDIR}/"
+BBFILE_PRIORITY_egycounter = "8"
+
+LAYERDEPENDS_egycounter = "core openembedded-layer meta-python networking-layer"
+LAYERSERIES_COMPAT_egycounter = "kirkstone"

yocto/meta-egycounter/recipes-connectivity/usb-gadget-ethernet/files/usb-gadget-ethernet.service

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+[Unit]
+Description=Enable USB Ethernet gadget
+After=systemd-modules-load.service
+
+[Service]
+Type=oneshot
+ExecStart=/sbin/modprobe g_ether
+RemainAfterExit=yes
+
+[Install]
+WantedBy=multi-user.target

yocto/meta-egycounter/recipes-connectivity/usb-gadget-ethernet/usb-gadget-ethernet.bb

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+SUMMARY = "Enable USB gadget Ethernet on BeagleBone USB client port"
+LICENSE = "MIT"
+LIC_FILES_CHKSUM = "file://${COMMON_LICENSE_DIR}/MIT;md5=0835ade698e0bcf8506ecda2f7b4f302"
+
+inherit systemd
+
+SRC_URI = "file://usb-gadget-ethernet.service"
+
+SYSTEMD_SERVICE:${PN} = "usb-gadget-ethernet.service"
+SYSTEMD_AUTO_ENABLE = "enable"
+
+do_install() {
+    install -d ${D}${systemd_system_unitdir}
+    install -m 0644 ${WORKDIR}/usb-gadget-ethernet.service ${D}${systemd_system_unitdir}/
+}

yocto/meta-egycounter/recipes-core/images/egycounter-image.bb

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+SUMMARY = "Headless BeagleBone image for esp-egycounter"
+LICENSE = "MIT"
+
+inherit core-image
+
+IMAGE_FEATURES += "ssh-server-openssh package-management"
+
+IMAGE_INSTALL:append = " \
+    apt \
+    dpkg \
+    openssh \
+    nginx \
+    mosquitto \
+    can-utils \
+    iproute2 \
+    iptables \
+    usbutils \
+    python3 \
+    python3-modules \
+    python3-paho-mqtt \
+    python3-pyserial \
+    python3-requests \
+    python3-urllib3 \
+    python3-pyyaml \
+    python3-crcmod \
+    python3-can \
+    python3-pymodbus \
+    python3-adafruit-bbio \
+    pyplc \
+    openv2gx \
+    egycounter-battery-control \
+    usb-gadget-ethernet \
+"

yocto/meta-egycounter/recipes-devtools/python/python3-adafruit-bbio/python3-adafruit-bbio_1.2.0.bb

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+SUMMARY = "Adafruit BBIO library for BeagleBone"
+HOMEPAGE = "https://github.com/adafruit/adafruit-beaglebone-io-python"
+LICENSE = "CLOSED"
+
+inherit pypi setuptools3
+
+PYPI_PACKAGE = "Adafruit-BBIO"
+SRC_URI[sha256sum] = "f6f20b3adfbfe7067ac8b9ac2b33cd807401e33ad0396b079f8c3d323f7fd540"

yocto/meta-egycounter/recipes-kernel/linux/linux-ti-rcn/qca7k-usb-gadget.cfg

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+# qca7k / qca7000 support
+CONFIG_QCA7000=y
+CONFIG_QCA7000_SPI=y
+
+# USB gadget networking (for BeagleBone USB client connector)
+CONFIG_USB_GADGET=y
+CONFIG_USB_LIBCOMPOSITE=y
+CONFIG_USB_CONFIGFS=y
+CONFIG_USB_CONFIGFS_ECM=y
+CONFIG_USB_CONFIGFS_RNDIS=y
+CONFIG_USB_ETH=y
+CONFIG_USB_ETH_EEM=y
+CONFIG_USB_ETH_RNDIS=y

yocto/meta-egycounter/recipes-kernel/linux/linux-ti-rcn_6.6.bb

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+SUMMARY = "RobertCNelson TI Linux kernel for BeagleBone"
+DESCRIPTION = "Kernel from RobertCNelson/ti-linux-kernel-dev with additional config fragment"
+LICENSE = "GPL-2.0-only"
+LIC_FILES_CHKSUM = "file://COPYING;md5=d7810fab7487fb0aad327b76f1be7cd7"
+
+inherit kernel
+
+SRC_URI = "git://github.com/RobertCNelson/ti-linux-kernel-dev.git;branch=master;protocol=https \
+           file://qca7k-usb-gadget.cfg"
+
+SRCREV = "${AUTOREV}"
+PV = "6.6+git${SRCPV}"
+
+S = "${WORKDIR}/git"
+
+KERNEL_IMAGETYPE = "zImage"
+
+# Use upstream BeagleBone defconfig as baseline and append cfg fragment
+KBUILD_DEFCONFIG = "omap2plus_defconfig"
+
+KERNEL_CONFIG_FRAGMENTS += "${WORKDIR}/qca7k-usb-gadget.cfg"

yocto/meta-egycounter/recipes-support/egycounter-battery-control/egycounter-battery-control_git.bb

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+SUMMARY = "esp-egycounter battery-control scripts"
+HOMEPAGE = "https://github.com/jsphuebner/esp-egycounter"
+LICENSE = "MIT"
+LIC_FILES_CHKSUM = "file://LICENSE;md5=0835ade698e0bcf8506ecda2f7b4f302"
+
+SRC_URI = "git://github.com/jsphuebner/esp-egycounter.git;branch=main;protocol=https"
+SRCREV = "${AUTOREV}"
+
+S = "${WORKDIR}/git"
+
+do_install() {
+    install -d ${D}/opt/esp-egycounter
+    cp -R --no-preserve=ownership ${S}/battery-control ${D}/opt/esp-egycounter/
+}
+
+FILES:${PN} += "/opt/esp-egycounter/battery-control"
+
+RDEPENDS:${PN} += " \
+    python3-core \
+    python3-modules \
+    python3-paho-mqtt \
+    python3-pyserial \
+    python3-requests \
+    python3-urllib3 \
+    python3-pyyaml \
+    python3-crcmod \
+    python3-can \
+    python3-pymodbus \
+    python3-adafruit-bbio \
+"

yocto/meta-egycounter/recipes-support/openv2gx/openv2gx_git.bb

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+SUMMARY = "OpenV2Gx EXI decoder/encoder"
+HOMEPAGE = "https://github.com/uhi22/OpenV2Gx"
+LICENSE = "CLOSED"
+
+inherit cmake pkgconfig
+
+SRC_URI = "git://github.com/uhi22/OpenV2Gx.git;branch=master;protocol=https"
+SRCREV = "${AUTOREV}"
+
+S = "${WORKDIR}/git"
+
+FILES:${PN} += "${bindir} ${libdir}"

yocto/meta-egycounter/recipes-support/pyplc/pyplc_git.bb

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+SUMMARY = "pyPLC V2G implementation"
+HOMEPAGE = "https://github.com/uhi22/pyPLC"
+LICENSE = "CLOSED"
+
+SRC_URI = "git://github.com/uhi22/pyPLC.git;branch=master;protocol=https"
+SRCREV = "${AUTOREV}"
+
+S = "${WORKDIR}/git"
+
+do_install() {
+    install -d ${D}/opt/pyplc
+    cp -R --no-preserve=ownership ${S}/* ${D}/opt/pyplc/
+}
+
+FILES:${PN} += "/opt/pyplc"
+
+RDEPENDS:${PN} += " \
+    python3-core \
+    python3-modules \
+    python3-pyserial \
+"