Add script to set cpu frequency, used in thermal tests

Author: MaxPayne86

recipes-support/arduino-ootb/arduino-ootb.bb

@@ -12,6 +12,7 @@ SRC_URI = " \
     file://connection_status_led \
     file://ec200a-eu.service \
     file://compose-apps-aklite-offline-run.service \
+    file://set_cpu_freq \
 "
 
 inherit systemd
@@ -33,6 +34,11 @@ do_install() {
     install -m 0755 ${WORKDIR}/connection_status_led ${D}${bindir}/
 }
 
+do_install:append:lmp-base() {
+    install -d ${D}${bindir}
+    install -m 0755 ${WORKDIR}/set_cpu_freq ${D}${bindir}/
+}
+
 RDEPENDS:${PN} += "systemd udev-rules-portenta"
 
 FILES:${PN} += " \

recipes-support/arduino-ootb/arduino-ootb/set_cpu_freq

@@ -0,0 +1,18 @@
+#!/bin/bash
+
+CPU_FREQUENCIES=(200 400 600 1200 1600)
+
+if [[ ! " ${CPU_FREQUENCIES[@]} " =~ " $1 " ]]; then
+    echo "Error: Invalid min frequency. Must be one of: ${CPU_FREQUENCIES[@]}"
+    exit 1
+fi
+
+if [[ ! " ${CPU_FREQUENCIES[@]} " =~ " $2 " ]]; then
+    echo "Error: Invalid max frequency. Must be one of: ${CPU_FREQUENCIES[@]}"
+    exit 1
+fi
+
+echo "Min $1MHz, max $2MHz"
+for i in /sys/devices/system/cpu/cpu*/cpufreq/scaling_governor; do echo "powersave" | sudo tee $i; done
+for i in /sys/devices/system/cpu/cpu*/cpufreq/scaling_min_freq; do echo "${1}000" | sudo tee $i; done
+for i in /sys/devices/system/cpu/cpu*/cpufreq/scaling_max_freq; do echo "${2}000" | sudo tee $i; done