first commit

.SRCINFO

@@ -0,0 +1,17 @@
+pkgbase = g9xled
+	pkgdesc = Logitech G9X LED color control utility
+	pkgver = 1
+	pkgrel = 2
+	url = http://als.regnet.cz/logitech-g9-linux-led-color.html
+	install = g9xled.install
+	arch = i686
+	arch = x86_64
+	license = unknown
+	makedepends = gcc
+	depends = libusb
+	noextract = g9xled.c
+	source = http://lxl.io/aur/g9xled/g9xled.c
+	md5sums = 0a8ba5b00ca0663cd6dd6efa30597cbd
+
+pkgname = g9xled
+

PKGBUILD

@@ -0,0 +1,29 @@
+# Contributor: Philipp Schmitt (attentah@NOSPAM.gmail.com)
+
+pkgname=g9xled
+pkgver=1
+pkgrel=2
+pkgdesc="Logitech G9X LED color control utility"
+arch=('i686' 'x86_64')
+url="http://als.regnet.cz/logitech-g9-linux-led-color.html"
+license=('unknown')
+depends=('libusb')
+makedepends=('gcc')
+install="$pkgname.install"
+source=(http://lxl.io/aur/g9xled/g9xled.c)
+noextract=('g9xled.c')
+md5sums=('0a8ba5b00ca0663cd6dd6efa30597cbd')
+
+
+build() {
+
+  # Create destination directories
+  mkdir -p $pkgdir/usr/bin
+
+  # Build/Install
+  cd "$srcdir"
+
+  gcc g9xled.c -o g9xled -lusb
+  install -m755 g9xled $pkgdir/usr/bin
+
+}

g9xled.c

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+#include <stdio.h>
+#include <string.h>
+#include <usb.h>
+
+#define G9X_VENDOR_ID   0x046d
+#define G9X_PRODUCT_ID  0xc066
+
+unsigned int get_hex4(unsigned char *p)
+{
+    return (*p > '9' ? *p - 'A' + 10 : *p - '0') & 15;
+}
+
+unsigned int get_hex8(unsigned char *p)
+{
+    return (get_hex4(p) << 4) + get_hex4(p+1);
+}
+
+int is_hex(unsigned char *hex)
+{
+    char buf[7] = {0};  
+
+    return (strtok(strncpy(buf, hex, sizeof(buf)), "0123456789ABCDEFabcdef") == NULL);
+}
+                    
+static void change_color(struct usb_dev_handle *handle, unsigned char *color)
+{
+    unsigned char usb_data[] = { 0x10, 0x00, 0x80, 0x57, 0x00, 0x00, 0x00 };
+
+    usb_data[4] = get_hex8(color);
+    usb_data[5] = get_hex8(color+2);
+    usb_data[6] = get_hex8(color+4);
+
+    usb_control_msg(handle, 0x34, 0x9, 0x210, 0x01, (char*)usb_data, 0x7, 5000);
+}
+
+static struct usb_device *device_init(void)
+{
+    struct usb_bus *usb_bus;
+    struct usb_device *dev;
+
+    usb_init();
+    usb_find_busses();
+    usb_find_devices();
+
+    for (usb_bus = usb_busses; usb_bus; usb_bus = usb_bus->next) {
+        for (dev = usb_bus->devices; dev; dev = dev->next) {
+            if ((dev->descriptor.idVendor == G9X_VENDOR_ID) && (dev->descriptor.idProduct == G9X_PRODUCT_ID))
+        	return dev;
+        }
+    }
+    return NULL;
+}
+
+int main(int argc, char **argv)
+{
+    struct usb_device *usb_dev;
+    struct usb_dev_handle *usb_handle;
+    int retval = 1;
+    
+    usb_dev = device_init();
+    if (usb_dev == NULL) {
+        fprintf(stderr, "Device not found!\n");
+        goto exit;
+    }
+
+    usb_handle = usb_open(usb_dev);
+    if (usb_handle == NULL) {
+        fprintf(stderr, "Unable to open USB device!\n");
+        goto exit;
+    }
+
+    if ((argc != 2) || (strlen(argv[1]) != 6) || !is_hex(argv[1])) {
+        fprintf(stderr, "Specify color in RRGGBB hexa form!\n");
+        goto exit;
+    } 
+
+    change_color(usb_handle, argv[1]);
+    retval = 0;
+
+exit:
+    usb_close(usb_handle);
+    return retval;
+}
+

g9xled.install

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+post_install() {
+
+cat <<-EoM
+
+==> To set the Logitech G9X LED color, enter a hexadecimal value as root:
+==>
+==> g9xled RRGGBB
+==>
+==> g9xled attempts to round to the nearest subset color allowed by the G9X
+==> mouse.  Settings are temporary - profile color is restored on un-plugging
+==> and re-plugging of the mouse, or upon reboot.
+
+EoM
+
+}
+
+post_upgrade() {
+
+post_install
+
+}
+