Add various tools

tools/rpi_measure.sh

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+#!/bin/bash
+
+# Taken from: https://gist.github.com/TheRemote/10bda1ac790f959210db5789f5241436
+
+# Output current configuration
+#vcgencmd get_config int | egrep "(arm|core|gpu|sdram)_freq|over_volt"
+
+# Measure clock speeds
+for src in arm core h264 isp v3d; do echo -e "$src:\t$(vcgencmd measure_clock $src)"; done
+
+# Measure Volts
+for id in core sdram_c sdram_i sdram_p ; do echo -e "$id:\t$(vcgencmd measure_volts $id)"; done
+
+# Measure Temperature
+vcgencmd measure_temp
+
+# See if we are being throttled
+throttled="$(vcgencmd get_throttled)"
+echo -e "$throttled"
+if [[ $throttled != "throttled=0x0" ]]; then
+    echo "WARNING:  You are being throttled.  This is likely because you are undervoltage.  Please connect your PI to a better power supply!"
+fi