Changeset 03abecc in freewrt for package/base-files/files/sbin/failsafe

Timestamp:

Aug 14, 2025, 4:59:15 AM (4 months ago)

Author:

Waldemar Brodkorb <wbx@…>

Branches:

freewrt_2_0

Children:

28ae594

Parents:

d860f20

Message:

fix failsafe mode, use modern buttons and leds support

File:

• package/base-files/files/sbin/failsafe (modified) (1 diff)

package/base-files/files/sbin/failsafe

@@ -1 +1 @@
 #!/bin/sh
 
+# CONFIGURE
+EVENT_DEV="/dev/input/event0"    # change if your reset button is on a different event device
+KEY_CODE="KEY_RESTART"           # as reported by evtest
+LED_PATH="/sys/class/leds/bcm47xx:green:dmz"  # adjust to your LED name from ls /sys/class/leds
+FAILSAFE_IP="192.168.1.1"
+FAILSAFE_BCAST="192.168.1.255"
+
+# Bring up LAN
 ip link set up dev eth0
-ip addr add 192.168.1.1/24 broadcast 192.168.1.255 dev eth0
-netmsg 192.168.1.255 "Press reset now, to enter Failsafe!"
+ip addr add ${FAILSAFE_IP}/24 broadcast ${FAILSAFE_BCAST} dev eth0
+
+# Warn the user
+netmsg ${FAILSAFE_BCAST} "Press reset now, to enter Failsafe!"
 echo "Press reset now to enter Failsafe!"
-sleep 2
+sleep 2 &
 
-if [ $(cat /proc/sys/reset) = 1 ]; then
-        while :; do
-                echo $(((X=(X+1)%8)%2)) >/proc/sys/diag
-                sleep $((X==0))
-        done &
-        netmsg 192.168.1.255 "Entering Failsafe!"
-        telnetd 
-        exit 1
+# Check for reset press during the 2s window
+# We'll read the event stream for KEY_RESTART with value 1 (press)
+pressed=0
+timeout 2 sh -c "
+    evtest ${EVENT_DEV} 2>/dev/null | \
+    grep -m1 '${KEY_CODE}.*value 1' && exit 0 || exit 1
+"
+if [ $? -eq 0 ]; then
+    pressed=1
+fi
+
+if [ "$pressed" -eq 1 ]; then
+    # Blink LED in background
+    (
+        while :; do
+            echo 1 > ${LED_PATH}/brightness
+            sleep 0.5
+            echo 0 > ${LED_PATH}/brightness
+            sleep 0.5
+        done
+    ) &
+
+    netmsg ${FAILSAFE_BCAST} "Entering Failsafe!"
+    telnetd
+    exit 1
 else
-        ip addr flush dev eth0
+    ip addr flush dev eth0
 fi
+