From 7403fe8543e93d2e667254a51250256ed37104e3 Mon Sep 17 00:00:00 2001
From: Jordi Sanfeliu <jordi@fibranet.cat>
Date: Mon, 6 May 2013 15:55:43 +0200
Subject: [PATCH] Added a complete Raspberry Pi sensors graph

---
 lib/raspberrypi.pm | 583 +++++++++++++++++++++++++++++++++++++++++++++
 monitorix.conf     |  17 +-
 2 files changed, 599 insertions(+), 1 deletion(-)
 create mode 100644 lib/raspberrypi.pm

diff --git a/lib/raspberrypi.pm b/lib/raspberrypi.pm
new file mode 100644
index 0000000..89ac9d1
--- /dev/null
+++ b/lib/raspberrypi.pm
@@ -0,0 +1,583 @@
+#
+# Monitorix - A lightweight system monitoring tool.
+#
+# Copyright (C) 2005-2013 by Jordi Sanfeliu <jordi@fibranet.cat>
+#
+# 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; either version 2 of the License, or
+# (at your option) any later version.
+#
+# 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.
+#
+
+package raspberrypi;
+
+use strict;
+use warnings;
+use Monitorix;
+use RRDs;
+use Exporter 'import';
+our @EXPORT = qw(raspberrypi_init raspberrypi_update raspberrypi_cgi);
+
+sub raspberrypi_init {
+	my $myself = (caller(0))[3];
+	my ($package, $config, $debug) = @_;
+	my $rrd = $config->{base_lib} . $package . ".rrd";
+
+	if(!(-e $rrd)) {
+		logger("Creating '$rrd' file.");
+		eval {
+			RRDs::create($rrd,
+				"--step=60",
+				"DS:rpi_clock0:GAUGE:120:0:U",
+				"DS:rpi_clock1:GAUGE:120:0:U",
+				"DS:rpi_clock2:GAUGE:120:0:U",
+				"DS:rpi_clock3:GAUGE:120:0:U",
+				"DS:rpi_clock4:GAUGE:120:0:U",
+				"DS:rpi_clock5:GAUGE:120:0:U",
+				"DS:rpi_clock6:GAUGE:120:0:U",
+				"DS:rpi_clock7:GAUGE:120:0:U",
+				"DS:rpi_clock8:GAUGE:120:0:U",
+				"DS:rpi_temp0:GAUGE:120:0:100",
+				"DS:rpi_temp1:GAUGE:120:0:100",
+				"DS:rpi_temp2:GAUGE:120:0:100",
+				"DS:rpi_volt0:GAUGE:120:U:U",
+				"DS:rpi_volt1:GAUGE:120:U:U",
+				"DS:rpi_volt2:GAUGE:120:U:U",
+				"DS:rpi_volt3:GAUGE:120:U:U",
+				"DS:rpi_volt4:GAUGE:120:U:U",
+				"DS:rpi_volt5:GAUGE:120:U:U",
+				"RRA:AVERAGE:0.5:1:1440",
+				"RRA:AVERAGE:0.5:30:336",
+				"RRA:AVERAGE:0.5:60:744",
+				"RRA:AVERAGE:0.5:1440:365",
+				"RRA:MIN:0.5:1:1440",
+				"RRA:MIN:0.5:30:336",
+				"RRA:MIN:0.5:60:744",
+				"RRA:MIN:0.5:1440:365",
+				"RRA:MAX:0.5:1:1440",
+				"RRA:MAX:0.5:30:336",
+				"RRA:MAX:0.5:60:744",
+				"RRA:MAX:0.5:1440:365",
+				"RRA:LAST:0.5:1:1440",
+				"RRA:LAST:0.5:30:336",
+				"RRA:LAST:0.5:60:744",
+				"RRA:LAST:0.5:1440:365",
+			);
+		};
+		my $err = RRDs::error;
+		if($@ || $err) {
+			logger("$@") unless !$@;
+			if($err) {
+				logger("ERROR: while creating $rrd: $err");
+				if($err eq "RRDs::error") {
+					logger("... is the RRDtool Perl package installed?");
+				}
+			}
+			return;
+		}
+	}
+
+	push(@{$config->{func_update}}, $package);
+	logger("$myself: Ok") if $debug;
+}
+
+sub raspberrypi_update {
+	my $myself = (caller(0))[3];
+	my ($package, $config, $debug) = @_;
+	my $rrd = $config->{base_lib} . $package . ".rrd";
+	my $raspberrypi = $config->{raspberrypi};
+
+	my @clock = (0) x 9;
+	my @temp = (0) x 3;
+	my @volt = (0) x 6;
+
+	my $n;
+	my $rrdata = "N";
+
+	$n = 0;
+	foreach my $c (split(',', ($raspberrypi->{clocks} || ""))) {
+		$c = trim($c);
+		if(!open(IN, "vcgencmd measure_clock $c |")) {
+			logger("$myself: unable to execute 'vcgencmd measure_clock $c'. $!");
+			next;
+		}
+		while(<IN>) {
+			if(/^frequency\(\d+\)=(\d+)$/) {
+				$clock[$n] = $1;
+			}
+		}
+		close(IN);
+		$n++;
+	}
+
+	if(!open(IN, "vcgencmd measure_temp |")) {
+		logger("$myself: unable to execute 'vcgencmd measure_temp'. $!");
+	} else {
+		while(<IN>) {
+			if(/^temp=(\d+\.\d+)/) {
+				$temp[0] = $1;
+			}
+		}
+		$temp[1] = 0;
+		$temp[2] = 0;
+		close(IN);
+	}
+
+	$n = 0;
+	foreach my $v (split(',', ($raspberrypi->{volts} || ""))) {
+		$v = trim($v);
+		if(!open(IN, "vcgencmd measure_volts $v |")) {
+			logger("$myself: unable to execute 'vcgencmd measure_volts $v'. $!");
+			next;
+		}
+		while(<IN>) {
+			if(/^volt=(\d+\.\d+)V$/) {
+				$volt[$n] = $1;
+			}
+		}
+		close(IN);
+		$n++;
+	}
+
+	for($n = 0; $n < scalar(@clock); $n++) {
+		$rrdata .= ":$clock[$n]";
+	}
+	for($n = 0; $n < scalar(@temp); $n++) {
+		$rrdata .= ":$temp[$n]";
+	}
+	for($n = 0; $n < scalar(@volt); $n++) {
+		$rrdata .= ":$volt[$n]";
+	}
+
+	RRDs::update($rrd, $rrdata);
+	logger("$myself: $rrdata") if $debug;
+	my $err = RRDs::error;
+	logger("ERROR: while updating $rrd: $err") if $err;
+}
+
+sub raspberrypi_cgi {
+	my ($package, $config, $cgi) = @_;
+
+	my $raspberrypi = $config->{raspberrypi};
+	my @rigid = split(',', $raspberrypi->{rigid});
+	my @limit = split(',', $raspberrypi->{limit});
+	my $tf = $cgi->{tf};
+	my $colors = $cgi->{colors};
+	my $graph = $cgi->{graph};
+	my $silent = $cgi->{silent};
+
+	my $u = "";
+	my $width;
+	my $height;
+	my $temp_scale = "Celsius";
+	my @riglim;
+	my @tmp;
+	my @tmpz;
+	my @CDEF;
+	my $n;
+	my $err;
+	my @LC = (
+		"#FFA500",
+		"#44EEEE",
+		"#44EE44",
+		"#4444EE",
+		"#448844",
+		"#EE4444",
+		"#EE44EE",
+		"#EEEE44",
+		"#444444",
+	);
+
+	my $rrd = $config->{base_lib} . $package . ".rrd";
+	my $title = $config->{graph_title}->{$package};
+	my $PNG_DIR = $config->{base_dir} . "/" . $config->{imgs_dir};
+
+	$title = !$silent ? $title : "";
+
+	if(lc($config->{temperature_scale}) eq "f") {
+		$temp_scale = "Fahrenheit";
+	}
+
+
+	# text mode
+	#
+	if(lc($config->{iface_mode}) eq "text") {
+		if($title) {
+			main::graph_header($title, 2);
+			print("    <tr>\n");
+			print("    <td bgcolor='$colors->{title_bg_color}'>\n");
+		}
+		my (undef, undef, undef, $data) = RRDs::fetch("$rrd",
+			"--start=-$tf->{nwhen}$tf->{twhen}",
+			"AVERAGE",
+			"-r $tf->{res}");
+		$err = RRDs::error;
+		print("ERROR: while fetching $rrd: $err\n") if $err;
+		my $line1;
+		my $line2;
+		my $line3;
+		my $l;
+		print("    <pre style='font-size: 12px; color: $colors->{fg_color}';>\n");
+		foreach my $c (split(',', ($raspberrypi->{clocks} || ""))) {
+			$line2 .= sprintf(" %9s", substr(trim($c), 0, 9));
+			$line3 .= "----------";
+		}
+		$l = length($line2) + 6;
+		$line1 = sprintf("%${l}s", "Clocks");
+		$line1 .= " Temperature";
+		$line2 .= "        temp";
+		$line3 .= "------------";
+		$l = length($line2) + 6;
+		foreach my $v (split(',', ($raspberrypi->{volts} || ""))) {
+			$line2 .= sprintf(" %8s", substr(trim($v), 0, 8));
+			$line3 .= "---------";
+		}
+		$l = length($line2) + 6 - $l;
+		$line1 .= sprintf("%${l}s", "Voltages");
+		print("$line1\n");
+		print("Time  $line2 \n");
+		print("------$line3\n");
+		my $line;
+		my @row;
+		my $time;
+		my @clock;
+		my @temp;
+		my @volt;
+		for($l = 0, $time = $tf->{tb}; $l < ($tf->{tb} * $tf->{ts}); $l++) {
+			$line1 = " %2d$tf->{tc}  ";
+			undef(@row);
+			$line = @$data[$l];
+			(@clock[0..8], @temp[0..2], @volt[0..5]) = @$line;
+			for($n = 0; $n < 9; $n++) {
+				push(@row, celsius_to($config, $clock[$n]));
+				$line1 .= " ";
+				$line1 .= "%9d";
+			}
+			push(@row, celsius_to($config, $temp[0]));
+			$line1 .= "      ";
+			$line1 .= "%6.1f";
+			$time = $time - (1 / $tf->{ts});
+			for($n = 0; $n < 4; $n++) {
+				push(@row, celsius_to($config, $volt[$n]));
+				$line1 .= "   ";
+				$line1 .= "%6.2f";
+			}
+			printf("$line1 \n", $time, @row);
+		}
+		print("    </pre>\n");
+		if($title) {
+			print("    </td>\n");
+			print("    </tr>\n");
+			main::graph_footer();
+		}
+		print("  <br>\n");
+		return;
+	}
+
+
+	# graph mode
+	#
+	if($silent eq "yes" || $silent eq "imagetag") {
+		$colors->{fg_color} = "#000000";  # visible color for text mode
+		$u = "_";
+	}
+	if($silent eq "imagetagbig") {
+		$colors->{fg_color} = "#000000";  # visible color for text mode
+		$u = "";
+	}
+
+	my $PNG1 = $u . $package . "1." . $tf->{when} . ".png";
+	my $PNG2 = $u . $package . "2." . $tf->{when} . ".png";
+	my $PNG3 = $u . $package . "3." . $tf->{when} . ".png";
+	my $PNG1z = $u . $package . "1z." . $tf->{when} . ".png";
+	my $PNG2z = $u . $package . "2z." . $tf->{when} . ".png";
+	my $PNG3z = $u . $package . "3z." . $tf->{when} . ".png";
+	unlink ("$PNG_DIR" . "$PNG1",
+		"$PNG_DIR" . "$PNG2",
+		"$PNG_DIR" . "$PNG3");
+	if(lc($config->{enable_zoom}) eq "y") {
+		unlink ("$PNG_DIR" . "$PNG1z",
+			"$PNG_DIR" . "$PNG2z",
+			"$PNG_DIR" . "$PNG3z");
+	}
+
+	if($title) {
+		main::graph_header($title, 2);
+	}
+
+	if(trim($rigid[0]) eq 1) {
+		push(@riglim, "--upper-limit=" . trim($limit[0]));
+	} else {
+		if(trim($rigid[0]) eq 2) {
+			push(@riglim, "--upper-limit=" . trim($limit[0]));
+			push(@riglim, "--rigid");
+		}
+	}
+	$n = 0;
+	foreach my $c (split(',', ($raspberrypi->{clocks} || ""))) {
+		$c = trim($c);
+		if($c) {
+			my $str = sprintf("%-5s", substr($c, 0, 5));
+			push(@CDEF, "CDEF:clk$n=clock$n,1000000,/");
+			push(@tmp, "LINE2:clock$n" . $LC[$n] . ":$str");
+			push(@tmp, "GPRINT:clk$n:LAST: Cur\\: %6.1lfMhz");
+			push(@tmp, "GPRINT:clk$n:AVERAGE:   Avg\\: %6.1lfMhz");
+			push(@tmp, "GPRINT:clk$n:MIN:   Min\\: %6.1lfMhz");
+			push(@tmp, "GPRINT:clk$n:MAX:   Max\\: %6.1lfMhz\\n");
+			$str =~ s/\s+$//;
+			push(@tmpz, "LINE2:clock$n" . $LC[$n] . ":$str");
+		} else {
+			push(@tmp, "COMMENT: \\n");
+		}
+		$n++;
+	}
+	if($title) {
+		print("    <tr>\n");
+		print("    <td bgcolor='$colors->{title_bg_color}'>\n");
+	}
+	($width, $height) = split('x', $config->{graph_size}->{main});
+	if($silent =~ /imagetag/) {
+		($width, $height) = split('x', $config->{graph_size}->{remote}) if $silent eq "imagetag";
+		($width, $height) = split('x', $config->{graph_size}->{main}) if $silent eq "imagetagbig";
+		push(@tmp, "COMMENT: \\n");
+		push(@tmp, "COMMENT: \\n");
+		@tmp = @tmpz;
+		push(@tmp, "COMMENT: \\n");
+		push(@tmp, "COMMENT: \\n");
+	}
+	RRDs::graph("$PNG_DIR" . "$PNG1",
+		"--title=$config->{graphs}->{_raspberrypi1}  ($tf->{nwhen}$tf->{twhen})",
+		"--start=-$tf->{nwhen}$tf->{twhen}",
+		"--imgformat=PNG",
+		"--vertical-label=Hz",
+		"--width=$width",
+		"--height=$height",
+		@riglim,
+		"--lower-limit=0",
+		@{$cgi->{version12}},
+		@{$colors->{graph_colors}},
+		"DEF:clock0=$rrd:rpi_clock0:AVERAGE",
+		"DEF:clock1=$rrd:rpi_clock1:AVERAGE",
+		"DEF:clock2=$rrd:rpi_clock2:AVERAGE",
+		"DEF:clock3=$rrd:rpi_clock3:AVERAGE",
+		"DEF:clock4=$rrd:rpi_clock4:AVERAGE",
+		"DEF:clock5=$rrd:rpi_clock5:AVERAGE",
+		"DEF:clock6=$rrd:rpi_clock6:AVERAGE",
+		"DEF:clock7=$rrd:rpi_clock7:AVERAGE",
+		"DEF:clock8=$rrd:rpi_clock8:AVERAGE",
+		@CDEF,
+		@tmp);
+	$err = RRDs::error;
+	print("ERROR: while graphing $PNG_DIR" . "$PNG1: $err\n") if $err;
+	if(lc($config->{enable_zoom}) eq "y") {
+		($width, $height) = split('x', $config->{graph_size}->{zoom});
+		RRDs::graph("$PNG_DIR" . "$PNG1z",
+			"--title=$config->{graphs}->{_raspberrypi1}  ($tf->{nwhen}$tf->{twhen})",
+			"--start=-$tf->{nwhen}$tf->{twhen}",
+			"--imgformat=PNG",
+			"--vertical-label=Hz",
+			"--width=$width",
+			"--height=$height",
+			@riglim,
+			"--lower-limit=0",
+			@{$cgi->{version12}},
+			@{$colors->{graph_colors}},
+			"DEF:clock0=$rrd:rpi_clock0:AVERAGE",
+			"DEF:clock1=$rrd:rpi_clock1:AVERAGE",
+			"DEF:clock2=$rrd:rpi_clock2:AVERAGE",
+			"DEF:clock3=$rrd:rpi_clock3:AVERAGE",
+			"DEF:clock4=$rrd:rpi_clock4:AVERAGE",
+			"DEF:clock5=$rrd:rpi_clock5:AVERAGE",
+			"DEF:clock6=$rrd:rpi_clock6:AVERAGE",
+			"DEF:clock7=$rrd:rpi_clock7:AVERAGE",
+			"DEF:clock8=$rrd:rpi_clock8:AVERAGE",
+			@CDEF,
+			@tmpz);
+		$err = RRDs::error;
+		print("ERROR: while graphing $PNG_DIR" . "$PNG1z: $err\n") if $err;
+	}
+	if($title || ($silent =~ /imagetag/ && $graph =~ /raspberrypi1/)) {
+		if(lc($config->{enable_zoom}) eq "y") {
+			if(lc($config->{disable_javascript_void}) eq "y") {
+				print("      <a href=\"" . $config->{url} . "/" . $config->{imgs_dir} . $PNG1z . "\"><img src='" . $config->{url} . "/" . $config->{imgs_dir} . $PNG1 . "' border='0'></a>\n");
+			}
+			else {
+				print("      <a href=\"javascript:void(window.open('" . $config->{url} . "/" . $config->{imgs_dir} . $PNG1z . "','','width=" . ($width + 115) . ",height=" . ($height + 100) . ",scrollbars=0,resizable=0'))\"><img src='" . $config->{url} . "/" . $config->{imgs_dir} . $PNG1 . "' border='0'></a>\n");
+			}
+		} else {
+			print("      <img src='" . $config->{url} . "/" . $config->{imgs_dir} . $PNG1 . "'>\n");
+		}
+	}
+
+	if($title) {
+		print("    </td>\n");
+		print("    <td valign='top' bgcolor='" . $colors->{title_bg_color} . "'>\n");
+	}
+	undef(@CDEF);
+	undef(@tmp);
+	undef(@tmpz);
+	push(@tmp, "LINE2:temp_0#44AAEE:Temperature");
+	push(@tmp, "GPRINT:temp_0:LAST:          Current\\: %4.1lf\\n");
+	push(@tmpz, "LINE2:temp_0#44AAEE:Temperature");
+	push(@tmp, "COMMENT: \\n");
+	if(lc($config->{temperature_scale}) eq "f") {
+		push(@CDEF, "CDEF:temp_0=9,5,/,temp0,*,32,+");
+	} else {
+		push(@CDEF, "CDEF:temp_0=temp0");
+	}
+	($width, $height) = split('x', $config->{graph_size}->{small});
+	if($silent =~ /imagetag/) {
+		($width, $height) = split('x', $config->{graph_size}->{remote}) if $silent eq "imagetag";
+		($width, $height) = split('x', $config->{graph_size}->{main}) if $silent eq "imagetagbig";
+		@tmp = @tmpz;
+		push(@tmp, "COMMENT: \\n");
+		push(@tmp, "COMMENT: \\n");
+		push(@tmp, "COMMENT: \\n");
+	}
+	RRDs::graph("$PNG_DIR" . "$PNG2",
+		"--title=$config->{graphs}->{_raspberrypi2}  ($tf->{nwhen}$tf->{twhen})",
+		"--start=-$tf->{nwhen}$tf->{twhen}",
+		"--imgformat=PNG",
+		"--vertical-label=$temp_scale",
+		"--width=$width",
+		"--height=$height",
+		"--lower-limit=0",
+		@{$cgi->{version12}},
+		@{$cgi->{version12_small}},
+		@{$colors->{graph_colors}},
+		"DEF:temp0=$rrd:rpi_temp0:AVERAGE",
+		@CDEF,
+		@tmp);
+	$err = RRDs::error;
+	print("ERROR: while graphing $PNG_DIR" . "$PNG2: $err\n") if $err;
+	if(lc($config->{enable_zoom}) eq "y") {
+		($width, $height) = split('x', $config->{graph_size}->{zoom});
+		RRDs::graph("$PNG_DIR" . "$PNG2z",
+			"--title=$config->{graphs}->{_raspberrypi2}  ($tf->{nwhen}$tf->{twhen})",
+			"--start=-$tf->{nwhen}$tf->{twhen}",
+			"--imgformat=PNG",
+			"--vertical-label=$temp_scale",
+			"--width=$width",
+			"--height=$height",
+			"--lower-limit=0",
+			@{$cgi->{version12}},
+			@{$cgi->{version12_small}},
+			@{$colors->{graph_colors}},
+			"DEF:temp0=$rrd:rpi_temp0:AVERAGE",
+			@CDEF,
+			@tmpz);
+		$err = RRDs::error;
+		print("ERROR: while graphing $PNG_DIR" . "$PNG2z: $err\n") if $err;
+	}
+	if($title || ($silent =~ /imagetag/ && $graph =~ /raspberrypi2/)) {
+		if(lc($config->{enable_zoom}) eq "y") {
+			if(lc($config->{disable_javascript_void}) eq "y") {
+				print("      <a href=\"" . $config->{url} . "/" . $config->{imgs_dir} . $PNG2z . "\"><img src='" . $config->{url} . "/" . $config->{imgs_dir} . $PNG2 . "' border='0'></a>\n");
+			}
+			else {
+				print("      <a href=\"javascript:void(window.open('" . $config->{url} . "/" . $config->{imgs_dir} . $PNG2z . "','','width=" . ($width + 115) . ",height=" . ($height + 100) . ",scrollbars=0,resizable=0'))\"><img src='" . $config->{url} . "/" . $config->{imgs_dir} . $PNG2 . "' border='0'></a>\n");
+			}
+		} else {
+			print("      <img src='" . $config->{url} . "/" . $config->{imgs_dir} . $PNG2 . "'>\n");
+		}
+	}
+
+	undef(@CDEF);
+	undef(@tmp);
+	undef(@tmpz);
+	if(scalar(my @volts = split(',', ($raspberrypi->{volts} || "")))) {
+		for($n = 0; $n < 4; $n++) {
+			if($volts[$n]) {
+				my $str = sprintf("%-10s", substr(trim($volts[$n]), 0, 10));
+				push(@tmp, "LINE2:volt$n" . $LC[$n] . ":$str");
+				push(@tmp, "GPRINT:volt$n:LAST:           Current\\: %5.2lf\\n");
+				$str =~ s/\s+$//;
+				push(@tmpz, "LINE2:volt$n" . $LC[$n] . ":$str");
+			} else {
+				push(@tmp, "COMMENT: \\n");
+			}
+		}
+	}
+	($width, $height) = split('x', $config->{graph_size}->{small});
+	if($silent =~ /imagetag/) {
+		($width, $height) = split('x', $config->{graph_size}->{remote}) if $silent eq "imagetag";
+		($width, $height) = split('x', $config->{graph_size}->{main}) if $silent eq "imagetagbig";
+		@tmp = @tmpz;
+		push(@tmp, "COMMENT: \\n");
+		push(@tmp, "COMMENT: \\n");
+	}
+	RRDs::graph("$PNG_DIR" . "$PNG3",
+		"--title=$config->{graphs}->{_raspberrypi3}  ($tf->{nwhen}$tf->{twhen})",
+		"--start=-$tf->{nwhen}$tf->{twhen}",
+		"--imgformat=PNG",
+		"--vertical-label=Volts",
+		"--width=$width",
+		"--height=$height",
+		"--upper-limit=100",
+		"--lower-limit=0",
+		"--rigid",
+		@{$cgi->{version12}},
+		@{$cgi->{version12_small}},
+		@{$colors->{graph_colors}},
+		"DEF:volt0=$rrd:rpi_volt0:AVERAGE",
+		"DEF:volt1=$rrd:rpi_volt1:AVERAGE",
+		"DEF:volt2=$rrd:rpi_volt2:AVERAGE",
+		"DEF:volt3=$rrd:rpi_volt3:AVERAGE",
+		@tmp);
+	$err = RRDs::error;
+	print("ERROR: while graphing $PNG_DIR" . "$PNG3: $err\n") if $err;
+	if(lc($config->{enable_zoom}) eq "y") {
+		($width, $height) = split('x', $config->{graph_size}->{zoom});
+		RRDs::graph("$PNG_DIR" . "$PNG3z",
+			"--title=$config->{graphs}->{_raspberrypi3}  ($tf->{nwhen}$tf->{twhen})",
+			"--start=-$tf->{nwhen}$tf->{twhen}",
+			"--imgformat=PNG",
+			"--vertical-label=Volts",
+			"--width=$width",
+			"--height=$height",
+			"--upper-limit=100",
+			"--lower-limit=0",
+			"--rigid",
+			@{$cgi->{version12}},
+			@{$cgi->{version12_small}},
+			@{$colors->{graph_colors}},
+			"DEF:volt0=$rrd:rpi_volt0:AVERAGE",
+			"DEF:volt1=$rrd:rpi_volt1:AVERAGE",
+			"DEF:volt2=$rrd:rpi_volt2:AVERAGE",
+			"DEF:volt3=$rrd:rpi_volt3:AVERAGE",
+			@tmpz);
+		$err = RRDs::error;
+		print("ERROR: while graphing $PNG_DIR" . "$PNG3z: $err\n") if $err;
+	}
+	if($title || ($silent =~ /imagetag/ && $graph =~ /raspberrypi3/)) {
+		if(lc($config->{enable_zoom}) eq "y") {
+			if(lc($config->{disable_javascript_void}) eq "y") {
+				print("      <a href=\"" . $config->{url} . "/" . $config->{imgs_dir} . $PNG3z . "\"><img src='" . $config->{url} . "/" . $config->{imgs_dir} . $PNG3 . "' border='0'></a>\n");
+			}
+			else {
+				print("      <a href=\"javascript:void(window.open('" . $config->{url} . "/" . $config->{imgs_dir} . $PNG3z . "','','width=" . ($width + 115) . ",height=" . ($height + 100) . ",scrollbars=0,resizable=0'))\"><img src='" . $config->{url} . "/" . $config->{imgs_dir} . $PNG3 . "' border='0'></a>\n");
+			}
+		} else {
+			print("      <img src='" . $config->{url} . "/" . $config->{imgs_dir} . $PNG3 . "'>\n");
+		}
+	}
+
+	if($title) {
+		print("    </td>\n");
+		print("    </tr>\n");
+		main::graph_footer();
+	}
+	print("  <br>\n");
+	return;
+}
+
+1;
diff --git a/monitorix.conf b/monitorix.conf
index 0c7bccc..f7dc67a 100644
--- a/monitorix.conf
+++ b/monitorix.conf
@@ -75,6 +75,7 @@ secure_log_date_format = %b %e
 	ntp		= n
 	fail2ban	= n
 	icecast		= n
+	raspberrypi	= n
 	int		= y
 </graph_enable>
 
@@ -415,6 +416,16 @@ secure_log_date_format = %b %e
 </icecast>
 
 
+# RASPBERRYPI graph
+# -----------------------------------------------------------------------------
+<raspberrypi>
+	clocks = arm, core, h264, isp, v3d, uart, emmc, pixel, hdmi
+	volts = core, sdram_c, sdram_i, sdram_p
+	rigid = 0, 0, 0
+	limit = 100, 100, 100
+</raspberrypi>
+
+
 # INT graph
 # -----------------------------------------------------------------------------
 <int>
@@ -511,7 +522,7 @@ logo_bottom = logo_bot.png
 	remote	= 300x100
 </graph_size>
 
-graph_name = system, kern, proc, hptemp, lmsens, nvidia, disk, fs, net, serv, mail, port, user, ftp, apache, nginx, lighttpd, mysql, squid, nfss, nfsc, bind, ntp, fail2ban, icecast, int
+graph_name = system, kern, proc, hptemp, lmsens, nvidia, disk, fs, net, serv, mail, port, user, ftp, apache, nginx, lighttpd, mysql, squid, nfss, nfsc, bind, ntp, fail2ban, icecast, raspberrypi, int
 
 <graph_title>
 	system		= System load average and usage
@@ -539,6 +550,7 @@ graph_name = system, kern, proc, hptemp, lmsens, nvidia, disk, fs, net, serv, ma
 	ntp		= NTP statistics
 	fail2ban	= Fail2ban statistics
 	icecast		= Icecast Streaming Media Server
+	raspberrypi	= Raspberry Pi sensor statistics
 	int		= Devices interrupt activity
 </graph_title>
 
@@ -637,6 +649,9 @@ graph_name = system, kern, proc, hptemp, lmsens, nvidia, disk, fs, net, serv, ma
 	_fail2ban	= Fail2ban jails
 	_icecast1	= Current Listeners
 	_icecast2	= Bitrate
+	_raspberrypi1	= Clock frequency
+	_raspberrypi2	= Temperatures
+	_raspberrypi3	= Voltages
 	_int1		= Interrupt activity
 	_int2		= Core activity
 	_int3		= Interrupt activity