soc temp daemon, pir sensor add gpio input to userspace

functions.sh

@@ -91,6 +91,14 @@ debconf-apt-progress -- apt-get -y install rpimonitor
 # add my own configuration which is not default
 cd /etc/rpimonitor
 wget https://github.com/igorpecovnik/Debian-micro-home-server/blob/next/src/rpimonitor-myconfig.tgz?raw=true -O - | tar -xz
+cd /usr/local/bin
+wget https://github.com/igorpecovnik/Debian-micro-home-server/blob/next/src/temp-pir-daemon.sh?raw=true
+chmod +x /usr/local/bin/temp-pir-daemon.sh
+sed -e 's/exit 0//g' -i /etc/rc.local
+cat >> /etc/rc.local <<"EOF"
+nohup /usr/local/bin/temp-daemon.sh &
+exit 0
+EOF
 service rpimonitor restart
 }
 

src/temp-pir-daemon.sh

+#!/bin/bash
+#
+# SoC/HDD temperature daemon. Writes the current temperatures to
+# /run/soc-temp and /run/hdd-temp (since we're experiencing always
+# timeouts under heavy load when trying to get the temperatures
+# directly from within RPi-Monitor.
+
+Main() {
+        # SoCTempAdjustment is needed because the A20 SoC delivers uncalibrated temp values
+        SoCTempAdjustment=1447
+
+        # ensure module sunxi-dbgreg.ko is loaded
+        grep -q sunxi_dbgreg </proc/modules || ( modprobe sunxi-dbgreg ; sleep 0.1 )
+
+        # open GPIO22, PIR sensor
+        echo 22 > /sys/class/gpio/export
+
+        # prepare registers
+        echo 'f1c25000:27003f' > /sys/devices/virtual/misc/sunxi-dbgreg/rw/write;
+        echo 'f1c25010:40000' > /sys/devices/virtual/misc/sunxi-dbgreg/rw/write;
+        echo 'f1c25018:10fff' > /sys/devices/virtual/misc/sunxi-dbgreg/rw/write;
+        echo 'f1c25004:10' > /sys/devices/virtual/misc/sunxi-dbgreg/rw/write;
+
+        while [ 2 -ge 1 ]; do
+                # let the value be written to syslog
+                echo 'f1c25020' > /sys/devices/virtual/misc/sunxi-dbgreg/rw/read;
+
+                # wait 0.1 seconds
+                sleep 0.1
+
+                # read return value from syslog and transform it into degrees Celsius
+                HexVal=$(tail /var/log/syslog | awk -F" 0x" '/ 0x/ {print $2}' | tail -n1 )
+                SoCTemp=$(echo $(( 0x${HexVal} - ${SoCTempAdjustment} )) | awk '{printf ("%0.1f",$1/10); }')
+                if [ "X${SoCTemp}" != "X" ]; then
+                        echo -n ${SoCTemp} >/run/soc-temp
+                fi
+
+                # HDD/SSD temp
+                DiskTemp=$(hddtemp -n /dev/sda)
+                if [ "X${DiskTemp}" != "X" ]; then
+                        echo -n ${DiskTemp} >/run/hdd-temp
+                fi
+
+                # sleep 5 secs
+                sleep 5
+        done
+} # Main
+
+Main
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