added in GPIO led functionality

scripts/blink

@@ -0,0 +1,25 @@
+#!/bin/bash
+
+source ./gpio
+
+function blink()
+{
+  local pin=$1
+  local speed=$2
+
+  while :
+  do
+    gpio write $pin 1
+    sleep $speed
+    gpio write $pin 0
+    sleep $speed
+  done
+
+}
+
+
+# Just invoke our function if the script is called directly
+if [ "$BASH_SOURCE" == "$0" ]; then
+  gpio mode $1 out
+  blink $@
+fi

scripts/card-backup.sh

@@ -25,6 +25,22 @@ CARD_DEV="sd[ab]1" # Name of the storage card
 CARD_MOUNT_POINT="/media/card" # Mount point of the storage card
 SHUTD="5" # Minutes to wait before shutdown due to inactivity
 
+source ./gpio
+source ./blink
+
+gpio mode 5 out
+gpio mode 6 out
+gpio mode 13 out
+gpio mode 19 out
+gpio mode 26 out
+
+gpio wirte 5 0
+gpio write 6 0
+gpio write 13 0
+gpio write 19 0
+gpio write 26 0
+
+
 # Set the ACT LED to heartbeat
 sudo sh -c "echo heartbeat > /sys/class/leds/led0/trigger"
 
@@ -90,12 +106,16 @@ if [ ! -z "${CARD_READER[0]}" ]; then
     PERCENT=$(expr 100 \* $STORAGE_COUNT / $CARD_COUNT)
     sudo sh -c "echo $PERCENT"
     #IF STATEMENTS HERE FOR LEDS
-    if [ $PERCENT -gt 25 ] && [ $PERCENT -lt 49 ]; then
+    if [ $PERCENT -lt 19 ]; then
-      sudo sh -c "echo 300 > /sys/class/leds/led0/delay_on"
+      gpio write 26 1
-    elif [ $PERCENT -gt 50 ] && [ $PERCENT -lt 74 ]; then
+    elif [ $PERCENT -gt 20 ] && [ $PERCENT -lt 39 ]; then
-      sudo sh -c "echo 200 > /sys/class/leds/led0/delay_on"
+      gpio write 19 1
-    elif [ $PERCENT -gt 75 ] && [ $PERCENT -lt 100 ]; then
+    elif [ $PERCENT -gt 40 ] && [ $PERCENT -lt 59 ]; then
-      sudo sh -c "echo 100 > /sys/class/leds/led0/delay_on"
+      gpio write 13 1
+    elif [ $PERCENT -gt 60 ] && [ $PERCENT -lt 79 ]; then
+      gpio write 6 1
+    elif [ $PERCENT -gt 80 ] && [ $PERCENT -lt 100 ]; then
+      gpio write 5 1
     fi
     # then
     #LEDS

scripts/gpio

@@ -0,0 +1,55 @@
+#!/bin/bash
+
+# Utility to control the GPIO pins of the Raspberry Pi
+# Can be called as a script or sourced so that the gpio
+# function can be called directly
+
+function gpio()
+{
+    local verb=$1
+    local pin=$2
+    local value=$3
+
+    local pins=($GPIO_PINS)
+    if [[ "$pin" -lt ${#pins[@]} ]]; then
+        local pin=${pins[$pin]}
+    fi
+
+    local gpio_path=/sys/class/gpio
+    local pin_path=$gpio_path/gpio$pin
+
+    case $verb in
+        read)
+            cat $pin_path/value
+        ;;
+
+        write)
+            sudo sh -c "echo $value > $pin_path/value"
+        ;;
+
+        mode)
+            if [ ! -e $pin_path ]; then
+               sudo sh -c "echo $pin > $gpio_path/export"
+            fi
+            sudo sh -c "echo $value > $pin_path/direction"
+        ;;
+
+        state)
+            if [ -e $pin_path ]; then
+                local dir=$(cat $pin_path/direction)
+                local val=$(cat $pin_path/value)
+                echo "$dir $val"
+            fi
+        ;;
+        clean)
+            sudo sh -c "echo 0 > $pin_path/value"
+            sudo sh -c "echo $pin > $gpio_path/unexport"
+        ;;
+
+    esac
+}
+
+# Just invoke our function if the script is called directly
+if [ "$BASH_SOURCE" == "$0" ]; then
+    gpio $@
+fi