Allow example userscripts, with calibratePTZ example script. (#1371)

* PTZpresets.sh should not use inverted logic for motor control.

* Allow example userscripts, calibrate at boot example.

This commit changes run.sh to only execute files in /system/sdcard/config/userscripts/startup/
if they do not end with .dist. This allows example scripts to be included in the repository.

This commit also includes an example script calibratPTZ.sh.dist that will perform a PTZ calibration at boot
and if a /system/sdcard/config/cameraposition file exists it will also move the camera to the position it defines.

To enable the calibratePTZ.sh.dist demo, or any other script, copy or rename it to NOT end in .dist.
Example:
cp /system/sdcard/config/userscripts/startup/calibratePTZ.sh.dist /system/sdcard/config/userscripts/startup/calibratePTZ.sh

.gitignore

@@ -57,5 +57,8 @@ firmware_mod/config/rtspserver.conf
 firmware_mod/config/ntp_srv.conf
 firmware_mod/config/lighttpd.user
 firmware_mod/config/lighttpd.pem
-firmware_mod/config/userscripts/*/*
+firmware_mod/config/userscripts/motiondetection/*
+!firmware_mod/config/userscripts/motiondetection/*.dist
+firmware_mod/config/userscripts/startup/*
+!firmware_mod/config/userscripts/startup/*.dist
 firmware_mod/root/.ssh/*

firmware_mod/config/userscripts/startup/calibratePTZ.sh.dist

@@ -0,0 +1,25 @@
+#!/bin/sh
+
+# Performs PTZ calibration at boot and if
+# /system/sdcard/config/cameraposition exists
+# will adjust camera to that position.
+# Disabled by default as calibration can cause issues
+# on cameras that do not have mechanical endstops.
+# To enable:
+# cp /system/sdcard/config/userscripts/startup/calibratePTZ.sh.dist /system/sdcard/config/userscripts/startup/calibratePTZ.sh
+
+/system/sdcard/bin/motor -d v
+
+FILECAMERAPOS=/system/sdcard/config/cameraposition
+
+if [ -f ${FILECAMERAPOS} ]; then
+    # Get values in saved config file
+    origin_x_axis=`grep "x:" ${FILECAMERAPOS} | sed "s/x: //"`
+    origin_y_axis=`grep "y:" ${FILECAMERAPOS} | sed "s/y: //"`
+else
+    # No such file exists: create it with the current values
+    /system/sdcard/bin/motor -d s > ${FILECAMERAPOS}
+fi
+
+# go to home for both axis
+/system/sdcard/scripts/PTZpresets.sh $origin_x_axis $origin_y_axis

firmware_mod/run.sh

@@ -260,7 +260,9 @@ done
 
 ## Autostart startup userscripts
 for i in /system/sdcard/config/userscripts/startup/*; do
-  $i &
+  if [ $i != *".dist" ]; then
+    $i &
+  fi
 done
 
 echo "Startup finished!" >> $LOGPATH