iWave iW-RainboW-G15M, Руководство пользователя

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iWave Systems Technologies Pvt. Ltd.
iW-RainboW-G15M Android User Manual
5. COMMAND LINE TEST
5.1 Block devices Test (SD/eMMC/USB host/SATA test)

Execute the following commands in the Android terminal.
# cd /mnt/media_rw/<mount name>
# ls
Note: Depending on the interfaces connected to the board, the FAT partition will be mounted to
/mnt/media_rw/<mount name> where, ‘mount name’ can be any name.
Note: iMx6 Duallite and Solo Processors doesn’t support SATA
Note: EMMC auto mount is not supported by default because FAT partitions are not present.
5.2 LCD Back light Testing

The LCD back light has been controlled using PWM

To see the actual brightness set, execute below command
# cat /sys/class/backlight/backlight/brightness

To see the max brightness that can be set, execute below command
# cat /sys/class/backlight/backlight/max_brightness

To change the brightness, execute below command
# echo 4 > /sys/class/backlight/backlight/brightness
# echo 7 > /sys/class/backlight/backlight/brightness

Observe the LCD backlight brightness for different values
5.3 LVDS Back light Testing - Optional

The given BSP supports the LVDS backlight and power control through Qseven connector. This section
explains how to test the LVDS backlight and power control in the iW-RainboW-G15M platform.

To enable the backlight, execute below command
# echo 1 > /sys/bus/platform/devices/iwg15_backlight/bklight_enable

To disable the backlight, execute below command
# echo 0 > /sys/bus/platform/devices/iwg15_backlight/bklight_enable

To enable the power, execute below command
# echo 1 > /sys/bus/platform/devices/iwg15_backlight/pwr_enable

To disable the power, execute below command
# echo 0 > /sys/bus/platform/devices/iwg15_backlight/pwr_enable

Refer section to test the LVDS functionality. Dual Display