Technical data

4. Packages
• conservative
The CPU frequency will be adjusted depending on the current CPU usage. The
frequency is changed step by step.
• powersave
The CPU allways runs with the lowest available frequency.
• userspace
The CPU frequence kann be set manually or by an user script via the sysfs variable
/devices/system/cpu/cpu<n>/cpufreq/scaling_setspeed.
HWSUPP_LED_N Defines the number of LEDs. The number of LEDs of the hardware in
use should be entered here.
HWSUPP_LED_x Defines the information indicated by the LED. The following informations
are possible:
• ready - the fli4l router ist ready for operation
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• online - the fli4l router has an active internet connection
• trigger - LED is controlled by a kernel trigger
• user - LED is controlled by an user script
The list of possible indications can be extended by other packages. For example, if the
WLAN package is loaded the information
• wlan - WLAN is active
is possible.
In apppendix B.10 package developers can get some hints on how to create such exten-
sions.
HWSUPP_LED_x_DEVICE Specifies the LED device.
Here you either have to enter a LED device (to be found at /sys/class/leds/ in the
router’s file system) or a GPIO
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number.
A list of valid LED device names for a specific HSUPP_TYPE can be found in the appendix
B.7.1.
The GPIO number has to be enterd in the format gpio::x. If a GPIO is entered, the
corresponding LED device will be created automatically. By preceding the char / the
GPIO functionality may be inverted.
Examples:
HWSUPP_LED_1_DEVICE='apu::1' # LED 1 on PC engines APU
HWSUPP_LED_2_DEVICE='gpio::237' # GPIO 237
HWSUPP_LED_3_DEVICE='/gpio::245' # inverted GPIO 245
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If HWSUPP_LED_x=’ready’ is set, the boot progress is indicated by a blink sequence (see appendix B.9).
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A GPIO (General Purpose Input/Output) is a generic pin on an integrated circuit whose behavior can be
programmed at run time, including whether it is an input or output pin.
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