From 04089d03954ea2dd968b04f9421215dc0f52ef5a Mon Sep 17 00:00:00 2001
From: webstoney <roland@netzblick.de>
Date: Thu, 27 Oct 2016 15:57:50 +0200
Subject: [PATCH 1/2] w1_ plugin

Plugin to graph the output of 1-Wire DS1820 temperature sensors on the Raspberry PI
---
 plugins/raspberry-pi/w1_ | 84 ++++++++++++++++++++++++++++++++++++++++
 1 file changed, 84 insertions(+)
 create mode 100644 plugins/raspberry-pi/w1_

diff --git a/plugins/raspberry-pi/w1_ b/plugins/raspberry-pi/w1_
new file mode 100644
index 00000000..60637cba
--- /dev/null
+++ b/plugins/raspberry-pi/w1_
@@ -0,0 +1,84 @@
+#!/bin/sh
+# -*- sh -*-
+
+: << =cut
+
+=head1 NAME
+
+w1_ - Plugin to monitor 1-wire temperature sensors (DS1820)
+
+=head1 CONFIGURATION
+
+The following environment variables are used by this plugin
+
+ sensorid     - Sensor to check. By default taken from command name.
+ t_warn       - Warning limit for nagios notification
+ t_crit       - Critical limit for nagios notification
+
+
+=head1 AUTHOR
+
+Copyright (C) 2016 Roland Steinbach
+
+=head1 LICENSE
+
+This program is free software; you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation; version 2 dated June, 1991.
+
+This program is distributed in the hope that it will be useful, but
+WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with this program; if not, write to the Free Software
+Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+02110-1301 USA.
+
+=head1 MAGIC MARKERS
+
+ #%# family=auto
+ #%# capabilities=autoconf suggest
+=cut
+
+. $MUNIN_LIBDIR/plugins/plugin.sh
+
+case $0 in
+    *w1_*)
+        sensor_id=${0##*/w1_}
+        ;;
+esac
+
+if [ "$1" = "suggest" ]; then
+    if [ -r /sys/bus/w1/devices ]; then
+        ls /sys/bus/w1/devices|head -n -1
+    fi
+    exit 0
+fi
+
+if [ "$1" = "autoconf" ]; then
+        if [ -r /sys/bus/w1/devices ]; then
+            echo yes
+            exit 0
+        else
+            echo "no (/sys/bus/w1/devices not found)"
+            exit 0
+        fi
+fi
+
+if [ "$1" = "config" ]; then
+        echo graph_title Temperature Sensor $sensor_id
+        echo 'graph_args --base 1000 -l 0'
+        echo 'graph_vlabel temperature (°C)'
+        echo 'graph_category temperature'
+        echo 'graph_info This graph shows 1-wire sensor temperature.'
+        echo "w1.label $sensor_id"
+        echo "w1.info Temperature at $sensor_id."
+        print_warning w1
+        print_critical w1
+        exit 0
+fi
+
+
+sed  -n '/t=/ s/.*t=//p' /sys/bus/w1/devices/$sensor_id/w1_slave | perl -e '$l=<STDIN>;print "w1.value ", $l/1000 , "\n";'

From f90a77035667a8f52482f1c6449b92f3e2303179 Mon Sep 17 00:00:00 2001
From: webstoney <roland@netzblick.de>
Date: Mon, 11 Jun 2018 08:44:14 +0200
Subject: [PATCH 2/2] Update w1_

Get rid of perl, use grep in suggest to clarify/simplify, put in sensors group
---
 plugins/raspberry-pi/w1_ | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/plugins/raspberry-pi/w1_ b/plugins/raspberry-pi/w1_
index 60637cba..0d745538 100644
--- a/plugins/raspberry-pi/w1_
+++ b/plugins/raspberry-pi/w1_
@@ -52,7 +52,7 @@ esac
 
 if [ "$1" = "suggest" ]; then
     if [ -r /sys/bus/w1/devices ]; then
-        ls /sys/bus/w1/devices|head -n -1
+        ls /sys/bus/w1/devices|grep -v bus_master
     fi
     exit 0
 fi
@@ -71,7 +71,7 @@ if [ "$1" = "config" ]; then
         echo graph_title Temperature Sensor $sensor_id
         echo 'graph_args --base 1000 -l 0'
         echo 'graph_vlabel temperature (°C)'
-        echo 'graph_category temperature'
+        echo 'graph_category sensors'
         echo 'graph_info This graph shows 1-wire sensor temperature.'
         echo "w1.label $sensor_id"
         echo "w1.info Temperature at $sensor_id."
@@ -81,4 +81,4 @@ if [ "$1" = "config" ]; then
 fi
 
 
-sed  -n '/t=/ s/.*t=//p' /sys/bus/w1/devices/$sensor_id/w1_slave | perl -e '$l=<STDIN>;print "w1.value ", $l/1000 , "\n";'
+sed  -n '/t=/ s/.*t=//p' /sys/bus/w1/devices/$sensor_id/w1_slave | awk '{print "w1.value", $1/1000}'