Kontron KTT20-pITX Manual de usuario descargar pdf (Pagina 47)

KTD-S0045-D Page 43 AndroidTM BSP

KTT20/pITX Software Guide

10.4.2 Temperatures

The board provides two temperatures: CPU (temp2) and sensor onchip (temp1). For temperature display in

°C divide the returned values by 1000.

 Get the sensor onchip temperature:

cat /sys/class/hwmon/hwmon0/device/temp1_input

 Get the CPU temperature:

cat /sys/class/hwmon/hwmon0/device/temp2_input

10.4.3 Backlight

The backlight functionality is only available if you have activated the LCD panel support in U-Boot.

 Get the brightness value:

cat /sys/class/backlight/pwm-backlight/brightness

 Set a new brightness value (range: 0 to 255):

echo

<value>

>/sys/class/backlight/pwm-backlight/brightness

Example:

echo 64 >/sys/class/backlight/pwm-backlight/brightness

10.4.4 Bootcounter

It can be useful to read the bootcounter.

 Get the bootcounter value:

cat /sys/bus/i2c/devices/2-0050/bootcounter

1 2 ... 42 43 44 45 46 47 48 49 50 51 52 ... 55 56

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Kontron KTT20-pITX Manual de usuario Pagina 47