Add AUR package for cp210xmanufacturing library

PKGBUILD:
- Builds 64-bit shared/static libraries from Silicon Labs source
- Installs headers to /usr/include/cp210x/
- Includes udev rules for non-root device access

To build: cd aur/cp210xmanufacturing && makepkg -si

aur/cp210xmanufacturing/.SRCINFO

@@ -0,0 +1,19 @@
+pkgbase = cp210xmanufacturing
+	pkgdesc = Silicon Labs CP210x USB-UART bridge manufacturing/customization library
+	pkgver = 1.0
+	pkgrel = 1
+	url = https://www.silabs.com/interface/usb-bridges/classic/device.cp2102
+	install = cp210xmanufacturing.install
+	arch = x86_64
+	license = custom:Silicon Labs
+	makedepends = gcc
+	makedepends = make
+	makedepends = unzip
+	depends = libusb
+	options = !strip
+	source = https://www.silabs.com/documents/public/example-code/AN721SW.zip
+	source = SiliconLabs.rules
+	sha256sums = 42cec8a75bf80120c02fa3a8a32ecfc1ba968ae32029efa3a7e5ca678b672fb1
+	sha256sums = bb046b9f9399cc7131bfee413c34f07c548df93dfbcc3fb58b64006bcd9c6f16
+
+pkgname = cp210xmanufacturing

aur/cp210xmanufacturing/PKGBUILD

@@ -0,0 +1,53 @@
+# Maintainer: Ryan Malloy <ryan@supported.systems>
+pkgname=cp210xmanufacturing
+pkgver=1.0
+pkgrel=1
+pkgdesc="Silicon Labs CP210x USB-UART bridge manufacturing/customization library"
+arch=('x86_64')
+url="https://www.silabs.com/interface/usb-bridges/classic/device.cp2102"
+license=('custom:Silicon Labs')
+depends=('libusb')
+makedepends=('gcc' 'make' 'unzip')
+install=cp210xmanufacturing.install
+source=("https://www.silabs.com/documents/public/example-code/AN721SW.zip"
+        "SiliconLabs.rules")
+sha256sums=('42cec8a75bf80120c02fa3a8a32ecfc1ba968ae32029efa3a7e5ca678b672fb1'
+            'bb046b9f9399cc7131bfee413c34f07c548df93dfbcc3fb58b64006bcd9c6f16')
+options=('!strip')
+
+prepare() {
+    cd "$srcdir"
+    unzip -o AN721SW.zip
+    cd AN721SW/Linux/LibrarySourcePackages
+    tar -xzf cp210xmanufacturing_1.0.tar.gz
+}
+
+build() {
+    cd "$srcdir/AN721SW/Linux/LibrarySourcePackages/cp210xmanufacturing"
+    make LIB_ARCH=64
+}
+
+package() {
+    cd "$srcdir/AN721SW/Linux/LibrarySourcePackages/cp210xmanufacturing"
+
+    # Install shared library
+    install -Dm755 build/lib/x86_64/libcp210xmanufacturing.so.1.0 \
+        "$pkgdir/usr/lib/libcp210xmanufacturing.so.1.0"
+    ln -s libcp210xmanufacturing.so.1.0 "$pkgdir/usr/lib/libcp210xmanufacturing.so.1"
+    ln -s libcp210xmanufacturing.so.1 "$pkgdir/usr/lib/libcp210xmanufacturing.so"
+
+    # Install static library
+    install -Dm644 build/lib/x86_64/libcp210xmanufacturing.a \
+        "$pkgdir/usr/lib/libcp210xmanufacturing.a"
+
+    # Install headers
+    install -d "$pkgdir/usr/include/cp210x"
+    install -Dm644 cp210xmanufacturing/include/*.h "$pkgdir/usr/include/cp210x/"
+
+    # Install udev rules
+    install -Dm644 "$srcdir/SiliconLabs.rules" \
+        "$pkgdir/usr/lib/udev/rules.d/99-silabs-cp210x.rules"
+
+    # License
+    install -Dm644 doc/ReadMe.txt "$pkgdir/usr/share/licenses/$pkgname/LICENSE"
+}

aur/cp210xmanufacturing/SiliconLabs.rules

@@ -0,0 +1,5 @@
+# Silicon Labs CP210x USB-UART bridge - allow non-root access
+# Add user to 'uucp' group: sudo usermod -aG uucp $USER
+#
+# For CP2102/CP2103/CP2104/CP2105/CP2108/CP2109 devices
+SUBSYSTEM=="usb", ATTRS{idVendor}=="10c4", MODE="0660", GROUP="uucp"

aur/cp210xmanufacturing/cp210xmanufacturing.install

@@ -0,0 +1,11 @@
+post_install() {
+    echo ":: Add your user to the uucp group for non-root access:"
+    echo "   sudo usermod -aG uucp \$USER"
+    echo ":: Reload udev rules:"
+    echo "   sudo udevadm control --reload-rules"
+    echo ":: Re-plug your CP210x device for changes to take effect"
+}
+
+post_upgrade() {
+    post_install
+}