Gpio - Advantech EPC-R3710NO-XAA100 User Manual

To build system image
Perform the following command in the terminal console:
$ source build/envsetup.sh
$ lunch rk3399_rsb3710-userdebug
$ make -j4 2>&1 | tee build-log.txt
$./mkimage.sh
All Android images will be generated in rockdev/Image- rk3399_rsb3710/ folder.
The common image files are listed below:
# boot.img
# kernel.img
# misc.img
mode.
# recovery.img
# resource.img
# system.img
# uboot.img
# trust.img
# MiniLoaderAll.bin : Loader
3.3

GPIO

GPIO Number
#
GPIO1
#
GPIO2
#
GPIO3
#
GPIO4
#
GPIO5
#
GPIO6
#
GPIO7
#
GPIO8
#
GPIO9
#
GPIO10
#
GPIO11
#
GPIO12
Export GPIO then you can use control GPIO from user space through sysfs.
Export GPIO1.
$ echo 504 > /sys/class/gpio/export
Set GPIO direction to in/out.
$ echo "out" > /sys/class/gpio/gpio504/direction
RSB-3710 User Manual
: Android's initramfs, to initialize and mount system partition.
: Kernel image.
: Misc partition image, to switch boot mode and pass parameter in recovery
: Recovery mode image.
: Resource image, containing boot logo and kernel's device tree info.
: System partition image with ext4 filesystem format.
: uboot
: File about sleep
GPIO formed
EXP1_0
EXP1_1
EXP1_2
EXP1_3
EXP2_0
EXP2_1
EXP2_2
EXP2_3
EXP2_4
EXP2_5
EXP2_6
EXP2_7
Numeric Representation
504
505
506
507
496
497
498
499
500
501
502
503
16