Sometimes you might want to control the clock speed of the BeagleBone. For example in a battery-powered environment where you want to use as little power as possible, and thus want to set the BeagleBone to use a lower frequency clock speed. In the later BeagleBone demo images, this can be done by using cpufreq-set. Read frequency and what governor that is used:
The governor can be set to any of the values "conservative", "ondemand", "powersave", "userspace". root@beaglebone:~# cpufreq-set --governor powersave The minimum and maximum frequency that the governor can use, can also be set. The frequency values that can be used are "720MHz", "600MHz", "500MHz" and "275MHz". root@beaglebone:~# cpufreq-set -f 600MHz When the "userspace" governor is used, the information is also available on the file system: Read current speed:
Set speed (275MHz, 500MHz and 720MHz):
|
Using the BeagleBone >