Inital Commit

root/usr/sbin/ugreen-led-init

@@ -0,0 +1,51 @@
+#!/usr/bin/env bash
+
+
+###
+#
+# Options Section
+#
+###
+
+set -u
+set -o pipefail
+
+
+###
+#
+# Function Section
+#
+###
+
+function load_module () {
+  MODULE="${1}"
+  if ! /usr/sbin/lsmod | /usr/bin/grep --quiet "${MODULE}"; then
+    /usr/sbin/modprobe "${MODULE}"
+  fi
+}
+
+
+###
+#
+# Runtime Environment
+#
+###
+
+load_module 'i2c_dev'
+load_module 'led_ugreen'
+
+I2C_DEV=$(/usr/sbin/i2cdetect -l | /usr/bin/grep 'SMBus I801 adapter' | grep --perl-regexp --only-matching 'i2c-\d+')
+
+if [[ -n "${I2C_DEV}" ]]; then 
+  DEV_PATH="/sys/bus/i2c/devices/$I2C_DEV/${I2C_DEV/i2c-/}-003a"
+  if [[ -d "${DEV_PATH}" ]]; then
+    DEV_NAME=$(/usr/bin/cat "${DEV_PATH}/name")
+  fi
+  if [[ ! -d "${DEV_PATH}" ]]; then
+    /usr/bin/echo 'led-ugreen 0x3a' > "/sys/bus/i2c/devices/${I2C_DEV}/new_device"
+  elif [[ "${DEV_NAME}" != 'led-ugreen' ]]; then
+    exit 1
+  fi
+else
+  exit 1
+fi