20240626确认飞凌开发板OK3588-C使用的I2C扩展GPIO芯片io扩展芯片TCA6424ARGJR的GPIO号的对应关系！
2024/6/26 20:15
SDK：Linux R4/Buildroot
root@ok3588:/#
root@ok3588:/# cd /sys/class/gpio/
root@ok3588:/sys/class/gpio#
root@ok3588:/sys/class/gpio#
root@ok3588:/sys/class/gpio# ls -l
total 0
--w------- 1 root root 4096 Jun 26 18:13 export
lrwxrwxrwx 1 root root 0 Jun 26 18:13 gpiochip0 -> ../../devices/platform/fd8a0000.gpio/gpio/gpiochip0
lrwxrwxrwx 1 root root 0 Jun 26 18:13 gpiochip128 -> ../../devices/platform/fec50000.gpio/gpio/gpiochip128
lrwxrwxrwx 1 root root 0 Jun 26 18:13 gpiochip32 -> ../../devices/platform/fec20000.gpio/gpio/gpiochip32
lrwxrwxrwx 1 root root 0 Jun 26 18:13 gpiochip485 -> ../../devices/platform/feaa0000.i2c/i2c-2/2-0023/gpio/gpiochip485
lrwxrwxrwx 1 root root 0 Jun 26 18:13 gpiochip509 -> ../../devices/platform/feb20000.spi/spi_master/spi2/spi2.0/rk806-pinctrl.1.auto/gpio/gpiochip509
lrwxrwxrwx 1 root root 0 Jun 26 18:13 gpiochip64 -> ../../devices/platform/fec30000.gpio/gpio/gpiochip64
lrwxrwxrwx 1 root root 0 Jun 26 18:13 gpiochip96 -> ../../devices/platform/fec40000.gpio/gpio/gpiochip96
--w------- 1 root root 4096 Jun 26 18:13 unexport
root@ok3588:/sys/class/gpio#
root@ok3588:/sys/class/gpio#
root@ok3588:/sys/class/gpio#
root@ok3588:/sys/class/gpio#
很容易确认GPIO好的对应关系：P00对应gpiochip485/gpio485
【请严重注意，扩展GPIO口分3段，不是连续的。P07之后P10，P17之后是P20。】
新手可能会在这里踩坑！
P00 485
P01 486
P02 487
P03 488
P04 489
P05 490
P06 491
P07 492
P10 493
P11 494
P12 495
P13 496
P14 497
P15 498
P16 499
P17 500
P20 501
P21 502
P22 503
P23 504
P24 505
P25 506
P26 507
P27 508
使用万用表实测：
高：3.3V/3.290V
低：OV/0.003v
详细的LOG：
root@ok3588:/#
root@ok3588:/#
root@ok3588:/# cd
root@ok3588:/#
root@ok3588:/#
root@ok3588:/#
root@ok3588:/# cd /sys/class/gpio/
root@ok3588:/sys/class/gpio#
root@ok3588:/sys/class/gpio#
root@ok3588:/sys/class/gpio# ls -l
total 0
--w------- 1 root root 4096 Jun 26 18:13 export
lrwxrwxrwx 1 root root 0 Jun 26 18:13 gpiochip0 -> ../../devices/platform/fd8a0000.gpio/gpio/gpiochip0
lrwxrwxrwx 1 root root 0 Jun 26 18:13 gpiochip128 -> ../../devices/platform/fec50000.gpio/gpio/gpiochip128
lrwxrwxrwx 1 root root 0 Jun 26 18:13 gpiochip32 -> ../../devices/platform/fec20000.gpio/gpio/gpiochip32
lrwxrwxrwx 1 root root 0 Jun 26 18:13 gpiochip485 -> ../../devices/platform/feaa0000.i2c/i2c-2/2-0023/gpio/gpiochip485
lrwxrwxrwx 1 root root 0 Jun 26 18:13 gpiochip509 -> ../../devices/platform/feb20000.spi/spi_master/spi2/spi2.0/rk806-pinctrl.1.auto/gpio/gpiochip509
lrwxrwxrwx 1 root root 0 Jun 26 18:13 gpiochip64 -> ../../devices/platform/fec30000.gpio/gpio/gpiochip64
lrwxrwxrwx 1 root root 0 Jun 26 18:13 gpiochip96 -> ../../devices/platform/fec40000.gpio/gpio/gpiochip96
--w------- 1 root root 4096 Jun 26 18:13 unexport
root@ok3588:/sys/class/gpio#
root@ok3588:/sys/class/gpio#
root@ok3588:/sys/class/gpio#
root@ok3588:/sys/class/gpio# ls -l
total 0
--w------- 1 root root 4096 Jun 26 18:13 export
lrwxrwxrwx 1 root root 0 Jun 26 18:13 gpiochip0 -> ../../devices/platform/fd8a0000.gpio/gpio/gpiochip0
lrwxrwxrwx 1 root root 0 Jun 26 18:13 gpiochip128 -> ../../devices/platform/fec50000.gpio/gpio/gpiochip128
lrwxrwxrwx 1 root root 0 Jun 26 18:13 gpiochip32 -> ../../devices/platform/fec20000.gpio/gpio/gpiochip32
lrwxrwxrwx 1 root root 0 Jun 26 18:13 gpiochip485 -> ../../devices/platform/feaa0000.i2c/i2c-2/2-0023/gpio/gpiochip485
lrwxrwxrwx 1 root root 0 Jun 26 18:13 gpiochip509 -> ../../devices/platform/feb20000.spi/spi_master/spi2/spi2.0/rk806-pinctrl.1.auto/gpio/gpiochip509
lrwxrwxrwx 1 root root 0 Jun 26 18:13 gpiochip64 -> ../../devices/platform/fec30000.gpio/gpio/gpiochip64
lrwxrwxrwx 1 root root 0 Jun 26 18:13 gpiochip96 -> ../../devices/platform/fec40000.gpio/gpio/gpiochip96
--w------- 1 root root 4096 Jun 26 18:13 unexport
root@ok3588:/sys/class/gpio#
root@ok3588:/sys/class/gpio#
root@ok3588:/sys/class/gpio# echo 508 > export
root@ok3588:/sys/class/gpio# ls -l
total 0
--w------- 1 root root 4096 Jun 26 18:32 export
lrwxrwxrwx 1 root root 0 Jun 26 18:32 gpio508 -> ../../devices/platform/feaa0000.i2c/i2c-2/2-0023/gpiochip6/gpio/gpio508
lrwxrwxrwx 1 root root 0 Jun 26 18:13 gpiochip0 -> ../../devices/platform/fd8a0000.gpio/gpio/gpiochip0
lrwxrwxrwx 1 root root 0 Jun 26 18:13 gpiochip128 -> ../../devices/platform/fec50000.gpio/gpio/gpiochip128
lrwxrwxrwx 1 root root 0 Jun 26 18:13 gpiochip32 -> ../../devices/platform/fec20000.gpio/gpio/gpiochip32
lrwxrwxrwx 1 root root 0 Jun 26 18:13 gpiochip485 -> ../../devices/platform/feaa0000.i2c/i2c-2/2-0023/gpio/gpiochip485
lrwxrwxrwx 1 root root 0 Jun 26 18:13 gpiochip509 -> ../../devices/platform/feb20000.spi/spi_master/spi2/spi2.0/rk806-pinctrl.1.auto/gpio/gpiochip509
lrwxrwxrwx 1 root root 0 Jun 26 18:13 gpiochip64 -> ../../devices/platform/fec30000.gpio/gpio/gpiochip64
lrwxrwxrwx 1 root root 0 Jun 26 18:13 gpiochip96 -> ../../devices/platform/fec40000.gpio/gpio/gpiochip96
--w------- 1 root root 4096 Jun 26 18:13 unexport
root@ok3588:/sys/class/gpio#
root@ok3588:/sys/class/gpio# cd gpio
sh: cd: gpio: No such file or directory
root@ok3588:/sys/class/gpio# cd gpio58
sh: cd: gpio58: No such file or directory
root@ok3588:/sys/class/gpio#
Display all 940 possibilities? (y or n)^C
root@ok3588:/sys/class/gpio#
root@ok3588:/sys/class/gpio# cd gpio508
root@ok3588:/sys/class/gpio/gpio508#
root@ok3588:/sys/class/gpio/gpio508# ls -l
total 0
-rw-r--r-- 1 root root 4096 Jun 26 18:32 active_low
lrwxrwxrwx 1 root root 0 Jun 26 18:32 device -> ../../../gpiochip6
-rw-r--r-- 1 root root 4096 Jun 26 18:32 direction
drwxr-xr-x 2 root root 0 Jun 26 18:32 power
lrwxrwxrwx 1 root root 0 Jun 26 18:32 subsystem -> ../../../../../../../../class/gpio
-rw-r--r-- 1 root root 4096 Jun 26 18:32 uevent
-rw-r--r-- 1 root root 4096 Jun 26 18:32 value
root@ok3588:/sys/class/gpio/gpio508#
root@ok3588:/sys/class/gpio/gpio508# cat direction
in
root@ok3588:/sys/class/gpio/gpio508# cat value
0
root@ok3588:/sys/class/gpio/gpio508#
root@ok3588:/sys/class/gpio/gpio508# echo out > direction
root@ok3588:/sys/class/gpio/gpio508# echo 1 > value
root@ok3588:/sys/class/gpio/gpio508#
root@ok3588:/sys/class/gpio/gpio508# cat direction
out
root@ok3588:/sys/class/gpio/gpio508# cat value
1
root@ok3588:/sys/class/gpio/gpio508#
root@ok3588:/sys/class/gpio/gpio508# echo 0 > value
root@ok3588:/sys/class/gpio/gpio508#
root@ok3588:/sys/class/gpio/gpio508#
root@ok3588:/sys/class/gpio/gpio508# echo 1 > value
root@ok3588:/sys/class/gpio/gpio508#
root@ok3588:/sys/class/gpio/gpio508# cat direction
out
root@ok3588:/sys/class/gpio/gpio508# cat value
1
root@ok3588:/sys/class/gpio/gpio508#
root@ok3588:/sys/class/gpio/gpio508#
root@ok3588:/sys/class/gpio/gpio508#
root@ok3588:/sys/class/gpio/gpio508#
root@ok3588:/sys/class/gpio/gpio508#
root@ok3588:/sys/class/gpio/gpio508# cd ..
root@ok3588:/sys/class/gpio#
root@ok3588:/sys/class/gpio#
root@ok3588:/sys/class/gpio# ls -l
total 0
--w------- 1 root root 4096 Jun 26 18:32 export
lrwxrwxrwx 1 root root 0 Jun 26 18:32 gpio508 -> ../../devices/platform/feaa0000.i2c/i2c-2/2-0023/gpiochip6/gpio/gpio508
lrwxrwxrwx 1 root root 0 Jun 26 18:13 gpiochip0 -> ../../devices/platform/fd8a0000.gpio/gpio/gpiochip0
lrwxrwxrwx 1 root root 0 Jun 26 18:13 gpiochip128 -> ../../devices/platform/fec50000.gpio/gpio/gpiochip128
lrwxrwxrwx 1 root root 0 Jun 26 18:13 gpiochip32 -> ../../devices/platform/fec20000.gpio/gpio/gpiochip32
lrwxrwxrwx 1 root root 0 Jun 26 18:13 gpiochip485 -> ../../devices/platform/feaa0000.i2c/i2c-2/2-0023/gpio/gpiochip485
lrwxrwxrwx 1 root root 0 Jun 26 18:13 gpiochip509 -> ../../devices/platform/feb20000.spi/spi_master/spi2/spi2.0/rk806-pinctrl.1.auto/gpio/gpiochip509
lrwxrwxrwx 1 root root 0 Jun 26 18:13 gpiochip64 -> ../../devices/platform/fec30000.gpio/gpio/gpiochip64
lrwxrwxrwx 1 root root 0 Jun 26 18:13 gpiochip96 -> ../../devices/platform/fec40000.gpio/gpio/gpiochip96
--w------- 1 root root 4096 Jun 26 18:13 unexport
root@ok3588:/sys/class/gpio#
root@ok3588:/sys/class/gpio#
root@ok3588:/sys/class/gpio# echo 507 > export
root@ok3588:/sys/class/gpio# ls -l
total 0
--w------- 1 root root 4096 Jun 26 18:38 export
lrwxrwxrwx 1 root root 0 Jun 26 18:38 gpio507 -> ../../devices/platform/feaa0000.i2c/i2c-2/2-0023/gpiochip6/gpio/gpio507
lrwxrwxrwx 1 root root 0 Jun 26 18:32 gpio508 -> ../../devices/platform/feaa0000.i2c/i2c-2/2-0023/gpiochip6/gpio/gpio508
lrwxrwxrwx 1 root root 0 Jun 26 18:13 gpiochip0 -> ../../devices/platform/fd8a0000.gpio/gpio/gpiochip0
lrwxrwxrwx 1 root root 0 Jun 26 18:13 gpiochip128 -> ../../devices/platform/fec50000.gpio/gpio/gpiochip128
lrwxrwxrwx 1 root root 0 Jun 26 18:13 gpiochip32 -> ../../devices/platform/fec20000.gpio/gpio/gpiochip32
lrwxrwxrwx 1 root root 0 Jun 26 18:13 gpiochip485 -> ../../devices/platform/feaa0000.i2c/i2c-2/2-0023/gpio/gpiochip485
lrwxrwxrwx 1 root root 0 Jun 26 18:13 gpiochip509 -> ../../devices/platform/feb20000.spi/spi_master/spi2/spi2.0/rk806-pinctrl.1.auto/gpio/gpiochip509
lrwxrwxrwx 1 root root 0 Jun 26 18:13 gpiochip64 -> ../../devices/platform/fec30000.gpio/gpio/gpiochip64
lrwxrwxrwx 1 root root 0 Jun 26 18:13 gpiochip96 -> ../../devices/platform/fec40000.gpio/gpio/gpiochip96
--w------- 1 root root 4096 Jun 26 18:13 unexport
root@ok3588:/sys/class/gpio#
root@ok3588:/sys/class/gpio# cd gpio57
sh: cd: gpio57: No such file or directory
root@ok3588:/sys/class/gpio# cd gpio507/
root@ok3588:/sys/class/gpio/gpio507#
root@ok3588:/sys/class/gpio/gpio507# ls -l
total 0
-rw-r--r-- 1 root root 4096 Jun 26 18:39 active_low
lrwxrwxrwx 1 root root 0 Jun 26 18:39 device -> ../../../gpiochip6
-rw-r--r-- 1 root root 4096 Jun 26 18:39 direction
drwxr-xr-x 2 root root 0 Jun 26 18:39 power
lrwxrwxrwx 1 root root 0 Jun 26 18:39 subsystem -> ../../../../../../../../class/gpio
-rw-r--r-- 1 root root 4096 Jun 26 18:38 uevent
-rw-r--r-- 1 root root 4096 Jun 26 18:39 value
root@ok3588:/sys/class/gpio/gpio507# echo out > direction
root@ok3588:/sys/class/gpio/gpio507# echo 1 > value
root@ok3588:/sys/class/gpio/gpio507#
root@ok3588:/sys/class/gpio/gpio507# cat direction
out
root@ok3588:/sys/class/gpio/gpio507# cat value
1
root@ok3588:/sys/class/gpio/gpio507# echo 0 > value
root@ok3588:/sys/class/gpio/gpio507#
root@ok3588:/sys/class/gpio/gpio507# cat direction
out
root@ok3588:/sys/class/gpio/gpio507# cat value
0
root@ok3588:/sys/class/gpio/gpio507#
root@ok3588:/sys/class/gpio/gpio507# cd ..
root@ok3588:/sys/class/gpio#
root@ok3588:/sys/class/gpio#
root@ok3588:/sys/class/gpio# ls -l
total 0
--w------- 1 root root 4096 Jun 26 18:38 export
lrwxrwxrwx 1 root root 0 Jun 26 18:38 gpio507 -> ../../devices/platform/feaa0000.i2c/i2c-2/2-0023/gpiochip6/gpio/gpio507
lrwxrwxrwx 1 root root 0 Jun 26 18:32 gpio508 -> ../../devices/platform/feaa0000.i2c/i2c-2/2-0023/gpiochip6/gpio/gpio508
lrwxrwxrwx 1 root root 0 Jun 26 18:13 gpiochip0 -> ../../devices/platform/fd8a0000.gpio/gpio/gpiochip0
lrwxrwxrwx 1 root root 0 Jun 26 18:13 gpiochip128 -> ../../devices/platform/fec50000.gpio/gpio/gpiochip128
lrwxrwxrwx 1 root root 0 Jun 26 18:13 gpiochip32 -> ../../devices/platform/fec20000.gpio/gpio/gpiochip32
lrwxrwxrwx 1 root root 0 Jun 26 18:13 gpiochip485 -> ../../devices/platform/feaa0000.i2c/i2c-2/2-0023/gpio/gpiochip485
lrwxrwxrwx 1 root root 0 Jun 26 18:13 gpiochip509 -> ../../devices/platform/feb20000.spi/spi_master/spi2/spi2.0/rk806-pinctrl.1.auto/gpio/gpiochip509
lrwxrwxrwx 1 root root 0 Jun 26 18:13 gpiochip64 -> ../../devices/platform/fec30000.gpio/gpio/gpiochip64
lrwxrwxrwx 1 root root 0 Jun 26 18:13 gpiochip96 -> ../../devices/platform/fec40000.gpio/gpio/gpiochip96
--w------- 1 root root 4096 Jun 26 18:13 unexport
root@ok3588:/sys/class/gpio#
root@ok3588:/sys/class/gpio# echo 506 > export
root@ok3588:/sys/class/gpio#
root@ok3588:/sys/class/gpio# ls -l
total 0
--w------- 1 root root 4096 Jun 26 18:40 export
lrwxrwxrwx 1 root root 0 Jun 26 18:40 gpio506 -> ../../devices/platform/feaa0000.i2c/i2c-2/2-0023/gpiochip6/gpio/gpio506
lrwxrwxrwx 1 root root 0 Jun 26 18:38 gpio507 -> ../../devices/platform/feaa0000.i2c/i2c-2/2-0023/gpiochip6/gpio/gpio507
lrwxrwxrwx 1 root root 0 Jun 26 18:32 gpio508 -> ../../devices/platform/feaa0000.i2c/i2c-2/2-0023/gpiochip6/gpio/gpio508
lrwxrwxrwx 1 root root 0 Jun 26 18:13 gpiochip0 -> ../../devices/platform/fd8a0000.gpio/gpio/gpiochip0
lrwxrwxrwx 1 root root 0 Jun 26 18:13 gpiochip128 -> ../../devices/platform/fec50000.gpio/gpio/gpiochip128
lrwxrwxrwx 1 root root 0 Jun 26 18:13 gpiochip32 -> ../../devices/platform/fec20000.gpio/gpio/gpiochip32
lrwxrwxrwx 1 root root 0 Jun 26 18:13 gpiochip485 -> ../../devices/platform/feaa0000.i2c/i2c-2/2-0023/gpio/gpiochip485
lrwxrwxrwx 1 root root 0 Jun 26 18:13 gpiochip509 -> ../../devices/platform/feb20000.spi/spi_master/spi2/spi2.0/rk806-pinctrl.1.auto/gpio/gpiochip509
lrwxrwxrwx 1 root root 0 Jun 26 18:13 gpiochip64 -> ../../devices/platform/fec30000.gpio/gpio/gpiochip64
lrwxrwxrwx 1 root root 0 Jun 26 18:13 gpiochip96 -> ../../devices/platform/fec40000.gpio/gpio/gpiochip96
--w------- 1 root root 4096 Jun 26 18:13 unexport
root@ok3588:/sys/class/gpio# cd gpio50
sh: cd: gpio50: No such file or directory
root@ok3588:/sys/class/gpio# cd gpio506/
root@ok3588:/sys/class/gpio/gpio506#
root@ok3588:/sys/class/gpio/gpio506# ls -l
total 0
-rw-r--r-- 1 root root 4096 Jun 26 18:40 active_low
lrwxrwxrwx 1 root root 0 Jun 26 18:40 device -> ../../../gpiochip6
-rw-r--r-- 1 root root 4096 Jun 26 18:40 direction
drwxr-xr-x 2 root root 0 Jun 26 18:40 power
lrwxrwxrwx 1 root root 0 Jun 26 18:40 subsystem -> ../../../../../../../../class/gpio
-rw-r--r-- 1 root root 4096 Jun 26 18:40 uevent
-rw-r--r-- 1 root root 4096 Jun 26 18:40 value
root@ok3588:/sys/class/gpio/gpio506# cat direction
in
root@ok3588:/sys/class/gpio/gpio506# cat value
0
root@ok3588:/sys/class/gpio/gpio506#
root@ok3588:/sys/class/gpio/gpio506# echo out > direction
root@ok3588:/sys/class/gpio/gpio506# echo 1 > value
root@ok3588:/sys/class/gpio/gpio506#
root@ok3588:/sys/class/gpio/gpio506# cat direction
out
root@ok3588:/sys/class/gpio/gpio506# cat value
1
root@ok3588:/sys/class/gpio/gpio506#
root@ok3588:/sys/class/gpio/gpio506# echo 0 > value
root@ok3588:/sys/class/gpio/gpio506#
root@ok3588:/sys/class/gpio/gpio506# cat direction
out
root@ok3588:/sys/class/gpio/gpio506# cat value
0
root@ok3588:/sys/class/gpio/gpio506# echo 1 > value
root@ok3588:/sys/class/gpio/gpio506#
root@ok3588:/sys/class/gpio/gpio506# cat direction
out
root@ok3588:/sys/class/gpio/gpio506# cat value
1
root@ok3588:/sys/class/gpio/gpio506#
root@ok3588:/sys/class/gpio/gpio506# cd ..
root@ok3588:/sys/class/gpio#
root@ok3588:/sys/class/gpio#
root@ok3588:/sys/class/gpio# ls -
ls: cannot access '-': No such file or directory
root@ok3588:/sys/class/gpio#
root@ok3588:/sys/class/gpio# ls -l
total 0
--w------- 1 root root 4096 Jun 26 18:40 export
lrwxrwxrwx 1 root root 0 Jun 26 18:40 gpio506 -> ../../devices/platform/feaa0000.i2c/i2c-2/2-0023/gpiochip6/gpio/gpio506
lrwxrwxrwx 1 root root 0 Jun 26 18:38 gpio507 -> ../../devices/platform/feaa0000.i2c/i2c-2/2-0023/gpiochip6/gpio/gpio507
lrwxrwxrwx 1 root root 0 Jun 26 18:32 gpio508 -> ../../devices/platform/feaa0000.i2c/i2c-2/2-0023/gpiochip6/gpio/gpio508
lrwxrwxrwx 1 root root 0 Jun 26 18:13 gpiochip0 -> ../../devices/platform/fd8a0000.gpio/gpio/gpiochip0
lrwxrwxrwx 1 root root 0 Jun 26 18:13 gpiochip128 -> ../../devices/platform/fec50000.gpio/gpio/gpiochip128
lrwxrwxrwx 1 root root 0 Jun 26 18:13 gpiochip32 -> ../../devices/platform/fec20000.gpio/gpio/gpiochip32
lrwxrwxrwx 1 root root 0 Jun 26 18:13 gpiochip485 -> ../../devices/platform/feaa0000.i2c/i2c-2/2-0023/gpio/gpiochip485
lrwxrwxrwx 1 root root 0 Jun 26 18:13 gpiochip509 -> ../../devices/platform/feb20000.spi/spi_master/spi2/spi2.0/rk806-pinctrl.1.auto/gpio/gpiochip509
lrwxrwxrwx 1 root root 0 Jun 26 18:13 gpiochip64 -> ../../devices/platform/fec30000.gpio/gpio/gpiochip64
lrwxrwxrwx 1 root root 0 Jun 26 18:13 gpiochip96 -> ../../devices/platform/fec40000.gpio/gpio/gpiochip96
--w------- 1 root root 4096 Jun 26 18:13 unexport
root@ok3588:/sys/class/gpio#
root@ok3588:/sys/class/gpio# echo 505 > export
root@ok3588:/sys/class/gpio#
root@ok3588:/sys/class/gpio# ls -l
total 0
--w------- 1 root root 4096 Jun 26 18:42 export
lrwxrwxrwx 1 root root 0 Jun 26 18:42 gpio505 -> ../../devices/platform/feaa0000.i2c/i2c-2/2-0023/gpiochip6/gpio/gpio505
lrwxrwxrwx 1 root root 0 Jun 26 18:40 gpio506 -> ../../devices/platform/feaa0000.i2c/i2c-2/2-0023/gpiochip6/gpio/gpio506
lrwxrwxrwx 1 root root 0 Jun 26 18:38 gpio507 -> ../../devices/platform/feaa0000.i2c/i2c-2/2-0023/gpiochip6/gpio/gpio507
lrwxrwxrwx 1 root root 0 Jun 26 18:32 gpio508 -> ../../devices/platform/feaa0000.i2c/i2c-2/2-0023/gpiochip6/gpio/gpio508
lrwxrwxrwx 1 root root 0 Jun 26 18:13 gpiochip0 -> ../../devices/platform/fd8a0000.gpio/gpio/gpiochip0
lrwxrwxrwx 1 root root 0 Jun 26 18:13 gpiochip128 -> ../../devices/platform/fec50000.gpio/gpio/gpiochip128
lrwxrwxrwx 1 root root 0 Jun 26 18:13 gpiochip32 -> ../../devices/platform/fec20000.gpio/gpio/gpiochip32
lrwxrwxrwx 1 root root 0 Jun 26 18:13 gpiochip485 -> ../../devices/platform/feaa0000.i2c/i2c-2/2-0023/gpio/gpiochip485
lrwxrwxrwx 1 root root 0 Jun 26 18:13 gpiochip509 -> ../../devices/platform/feb20000.spi/spi_master/spi2/spi2.0/rk806-pinctrl.1.auto/gpio/gpiochip509
lrwxrwxrwx 1 root root 0 Jun 26 18:13 gpiochip64 -> ../../devices/platform/fec30000.gpio/gpio/gpiochip64
lrwxrwxrwx 1 root root 0 Jun 26 18:13 gpiochip96 -> ../../devices/platform/fec40000.gpio/gpio/gpiochip96
--w------- 1 root root 4096 Jun 26 18:13 unexport
root@ok3588:/sys/class/gpio# cd gpio505/
root@ok3588:/sys/class/gpio/gpio505# ls -l
total 0
-rw-r--r-- 1 root root 4096 Jun 26 18:42 active_low
lrwxrwxrwx 1 root root 0 Jun 26 18:42 device -> ../../../gpiochip6
-rw-r--r-- 1 root root 4096 Jun 26 18:42 direction
drwxr-xr-x 2 root root 0 Jun 26 18:42 power
lrwxrwxrwx 1 root root 0 Jun 26 18:42 subsystem -> ../../../../../../../../class/gpio
-rw-r--r-- 1 root root 4096 Jun 26 18:42 uevent
-rw-r--r-- 1 root root 4096 Jun 26 18:42 value
root@ok3588:/sys/class/gpio/gpio505# cat direction
in
root@ok3588:/sys/class/gpio/gpio505# cat value
0
root@ok3588:/sys/class/gpio/gpio505#
root@ok3588:/sys/class/gpio/gpio505#
root@ok3588:/sys/class/gpio/gpio505# echo out > direction
root@ok3588:/sys/class/gpio/gpio505# echo 1 > value
root@ok3588:/sys/class/gpio/gpio505#
root@ok3588:/sys/class/gpio/gpio505# cat direction
out
root@ok3588:/sys/class/gpio/gpio505# cat value
1
root@ok3588:/sys/class/gpio/gpio505# echo 0 > value
root@ok3588:/sys/class/gpio/gpio505# cat direction
out
root@ok3588:/sys/class/gpio/gpio505# cat value
0
root@ok3588:/sys/class/gpio/gpio505#
root@ok3588:/sys/class/gpio/gpio505# echo 1 > value
root@ok3588:/sys/class/gpio/gpio505#
root@ok3588:/sys/class/gpio/gpio505#
root@ok3588:/sys/class/gpio/gpio505# cd ..
root@ok3588:/sys/class/gpio#
root@ok3588:/sys/class/gpio#
root@ok3588:/sys/class/gpio# ls -l
total 0
--w------- 1 root root 4096 Jun 26 18:42 export
lrwxrwxrwx 1 root root 0 Jun 26 18:42 gpio505 -> ../../devices/platform/feaa0000.i2c/i2c-2/2-0023/gpiochip6/gpio/gpio505
lrwxrwxrwx 1 root root 0 Jun 26 18:40 gpio506 -> ../../devices/platform/feaa0000.i2c/i2c-2/2-0023/gpiochip6/gpio/gpio506
lrwxrwxrwx 1 root root 0 Jun 26 18:38 gpio507 -> ../../devices/platform/feaa0000.i2c/i2c-2/2-0023/gpiochip6/gpio/gpio507
lrwxrwxrwx 1 root root 0 Jun 26 18:32 gpio508 -> ../../devices/platform/feaa0000.i2c/i2c-2/2-0023/gpiochip6/gpio/gpio508
lrwxrwxrwx 1 root root 0 Jun 26 18:13 gpiochip0 -> ../../devices/platform/fd8a0000.gpio/gpio/gpiochip0
lrwxrwxrwx 1 root root 0 Jun 26 18:13 gpiochip128 -> ../../devices/platform/fec50000.gpio/gpio/gpiochip128
lrwxrwxrwx 1 root root 0 Jun 26 18:13 gpiochip32 -> ../../devices/platform/fec20000.gpio/gpio/gpiochip32
lrwxrwxrwx 1 root root 0 Jun 26 18:13 gpiochip485 -> ../../devices/platform/feaa0000.i2c/i2c-2/2-0023/gpio/gpiochip485
lrwxrwxrwx 1 root root 0 Jun 26 18:13 gpiochip509 -> ../../devices/platform/feb20000.spi/spi_master/spi2/spi2.0/rk806-pinctrl.1.auto/gpio/gpiochip509
lrwxrwxrwx 1 root root 0 Jun 26 18:13 gpiochip64 -> ../../devices/platform/fec30000.gpio/gpio/gpiochip64
lrwxrwxrwx 1 root root 0 Jun 26 18:13 gpiochip96 -> ../../devices/platform/fec40000.gpio/gpio/gpiochip96
--w------- 1 root root 4096 Jun 26 18:13 unexport
root@ok3588:/sys/class/gpio#
root@ok3588:/sys/class/gpio# echo 504 > export
root@ok3588:/sys/class/gpio#
root@ok3588:/sys/class/gpio# ls -l
total 0
--w------- 1 root root 4096 Jun 26 18:44 export
lrwxrwxrwx 1 root root 0 Jun 26 18:44 gpio504 -> ../../devices/platform/feaa0000.i2c/i2c-2/2-0023/gpiochip6/gpio/gpio504
lrwxrwxrwx 1 root root 0 Jun 26 18:42 gpio505 -> ../../devices/platform/feaa0000.i2c/i2c-2/2-0023/gpiochip6/gpio/gpio505
lrwxrwxrwx 1 root root 0 Jun 26 18:40 gpio506 -> ../../devices/platform/feaa0000.i2c/i2c-2/2-0023/gpiochip6/gpio/gpio506
lrwxrwxrwx 1 root root 0 Jun 26 18:38 gpio507 -> ../../devices/platform/feaa0000.i2c/i2c-2/2-0023/gpiochip6/gpio/gpio507
lrwxrwxrwx 1 root root 0 Jun 26 18:32 gpio508 -> ../../devices/platform/feaa0000.i2c/i2c-2/2-0023/gpiochip6/gpio/gpio508
lrwxrwxrwx 1 root root 0 Jun 26 18:13 gpiochip0 -> ../../devices/platform/fd8a0000.gpio/gpio/gpiochip0
lrwxrwxrwx 1 root root 0 Jun 26 18:13 gpiochip128 -> ../../devices/platform/fec50000.gpio/gpio/gpiochip128
lrwxrwxrwx 1 root root 0 Jun 26 18:13 gpiochip32 -> ../../devices/platform/fec20000.gpio/gpio/gpiochip32
lrwxrwxrwx 1 root root 0 Jun 26 18:13 gpiochip485 -> ../../devices/platform/feaa0000.i2c/i2c-2/2-0023/gpio/gpiochip485
lrwxrwxrwx 1 root root 0 Jun 26 18:13 gpiochip509 -> ../../devices/platform/feb20000.spi/spi_master/spi2/spi2.0/rk806-pinctrl.1.auto/gpio/gpiochip509
lrwxrwxrwx 1 root root 0 Jun 26 18:13 gpiochip64 -> ../../devices/platform/fec30000.gpio/gpio/gpiochip64
lrwxrwxrwx 1 root root 0 Jun 26 18:13 gpiochip96 -> ../../devices/platform/fec40000.gpio/gpio/gpiochip96
--w------- 1 root root 4096 Jun 26 18:13 unexport
root@ok3588:/sys/class/gpio# cd gpio504/
root@ok3588:/sys/class/gpio/gpio504# ls -l
total 0
-rw-r--r-- 1 root root 4096 Jun 26 18:44 active_low
lrwxrwxrwx 1 root root 0 Jun 26 18:44 device -> ../../../gpiochip6
-rw-r--r-- 1 root root 4096 Jun 26 18:44 direction
drwxr-xr-x 2 root root 0 Jun 26 18:44 power
lrwxrwxrwx 1 root root 0 Jun 26 18:44 subsystem -> ../../../../../../../../class/gpio
-rw-r--r-- 1 root root 4096 Jun 26 18:44 uevent
-rw-r--r-- 1 root root 4096 Jun 26 18:44 value
root@ok3588:/sys/class/gpio/gpio504#
root@ok3588:/sys/class/gpio/gpio504# cat direction
in
root@ok3588:/sys/class/gpio/gpio504# cat value
0
root@ok3588:/sys/class/gpio/gpio504#
root@ok3588:/sys/class/gpio/gpio504# echo out > direction
root@ok3588:/sys/class/gpio/gpio504# echo 1 > value
root@ok3588:/sys/class/gpio/gpio504#
root@ok3588:/sys/class/gpio/gpio504# cat direction
out
root@ok3588:/sys/class/gpio/gpio504# cat value
1
root@ok3588:/sys/class/gpio/gpio504# echo 0 > value
root@ok3588:/sys/class/gpio/gpio504# cat direction
out
root@ok3588:/sys/class/gpio/gpio504# cat value
0
root@ok3588:/sys/class/gpio/gpio504#
root@ok3588:/sys/class/gpio/gpio504#
root@ok3588:/sys/class/gpio/gpio504# cd ..
root@ok3588:/sys/class/gpio#
root@ok3588:/sys/class/gpio#
root@ok3588:/sys/class/gpio# ls -l
total 0
--w------- 1 root root 4096 Jun 26 18:44 export
lrwxrwxrwx 1 root root 0 Jun 26 18:44 gpio504 -> ../../devices/platform/feaa0000.i2c/i2c-2/2-0023/gpiochip6/gpio/gpio504
lrwxrwxrwx 1 root root 0 Jun 26 18:42 gpio505 -> ../../devices/platform/feaa0000.i2c/i2c-2/2-0023/gpiochip6/gpio/gpio505
lrwxrwxrwx 1 root root 0 Jun 26 18:40 gpio506 -> ../../devices/platform/feaa0000.i2c/i2c-2/2-0023/gpiochip6/gpio/gpio506
lrwxrwxrwx 1 root root 0 Jun 26 18:38 gpio507 -> ../../devices/platform/feaa0000.i2c/i2c-2/2-0023/gpiochip6/gpio/gpio507
lrwxrwxrwx 1 root root 0 Jun 26 18:32 gpio508 -> ../../devices/platform/feaa0000.i2c/i2c-2/2-0023/gpiochip6/gpio/gpio508
lrwxrwxrwx 1 root root 0 Jun 26 18:13 gpiochip0 -> ../../devices/platform/fd8a0000.gpio/gpio/gpiochip0
lrwxrwxrwx 1 root root 0 Jun 26 18:13 gpiochip128 -> ../../devices/platform/fec50000.gpio/gpio/gpiochip128
lrwxrwxrwx 1 root root 0 Jun 26 18:13 gpiochip32 -> ../../devices/platform/fec20000.gpio/gpio/gpiochip32
lrwxrwxrwx 1 root root 0 Jun 26 18:13 gpiochip485 -> ../../devices/platform/feaa0000.i2c/i2c-2/2-0023/gpio/gpiochip485
lrwxrwxrwx 1 root root 0 Jun 26 18:13 gpiochip509 -> ../../devices/platform/feb20000.spi/spi_master/spi2/spi2.0/rk806-pinctrl.1.auto/gpio/gpiochip509
lrwxrwxrwx 1 root root 0 Jun 26 18:13 gpiochip64 -> ../../devices/platform/fec30000.gpio/gpio/gpiochip64
lrwxrwxrwx 1 root root 0 Jun 26 18:13 gpiochip96 -> ../../devices/platform/fec40000.gpio/gpio/gpiochip96
--w------- 1 root root 4096 Jun 26 18:13 unexport
root@ok3588:/sys/class/gpio#
root@ok3588:/sys/class/gpio#
root@ok3588:/sys/class/gpio# echo 503 > export
root@ok3588:/sys/class/gpio#
root@ok3588:/sys/class/gpio# ls -l
total 0
--w------- 1 root root 4096 Jun 26 18:45 export
lrwxrwxrwx 1 root root 0 Jun 26 18:45 gpio503 -> ../../devices/platform/feaa0000.i2c/i2c-2/2-0023/gpiochip6/gpio/gpio503
lrwxrwxrwx 1 root root 0 Jun 26 18:44 gpio504 -> ../../devices/platform/feaa0000.i2c/i2c-2/2-0023/gpiochip6/gpio/gpio504
lrwxrwxrwx 1 root root 0 Jun 26 18:42 gpio505 -> ../../devices/platform/feaa0000.i2c/i2c-2/2-0023/gpiochip6/gpio/gpio505
lrwxrwxrwx 1 root root 0 Jun 26 18:40 gpio506 -> ../../devices/platform/feaa0000.i2c/i2c-2/2-0023/gpiochip6/gpio/gpio506
lrwxrwxrwx 1 root root 0 Jun 26 18:38 gpio507 -> ../../devices/platform/feaa0000.i2c/i2c-2/2-0023/gpiochip6/gpio/gpio507
lrwxrwxrwx 1 root root 0 Jun 26 18:32 gpio508 -> ../../devices/platform/feaa0000.i2c/i2c-2/2-0023/gpiochip6/gpio/gpio508
lrwxrwxrwx 1 root root 0 Jun 26 18:13 gpiochip0 -> ../../devices/platform/fd8a0000.gpio/gpio/gpiochip0
lrwxrwxrwx 1 root root 0 Jun 26 18:13 gpiochip128 -> ../../devices/platform/fec50000.gpio/gpio/gpiochip128
lrwxrwxrwx 1 root root 0 Jun 26 18:13 gpiochip32 -> ../../devices/platform/fec20000.gpio/gpio/gpiochip32
lrwxrwxrwx 1 root root 0 Jun 26 18:13 gpiochip485 -> ../../devices/platform/feaa0000.i2c/i2c-2/2-0023/gpio/gpiochip485
lrwxrwxrwx 1 root root 0 Jun 26 18:13 gpiochip509 -> ../../devices/platform/feb20000.spi/spi_master/spi2/spi2.0/rk806-pinctrl.1.auto/gpio/gpiochip509
lrwxrwxrwx 1 root root 0 Jun 26 18:13 gpiochip64 -> ../../devices/platform/fec30000.gpio/gpio/gpiochip64
lrwxrwxrwx 1 root root 0 Jun 26 18:13 gpiochip96 -> ../../devices/platform/fec40000.gpio/gpio/gpiochip96
--w------- 1 root root 4096 Jun 26 18:13 unexport
root@ok3588:/sys/class/gpio#
root@ok3588:/sys/class/gpio# cd gpio503/
root@ok3588:/sys/class/gpio/gpio503# ls -l
total 0
-rw-r--r-- 1 root root 4096 Jun 26 18:45 active_low
lrwxrwxrwx 1 root root 0 Jun 26 18:45 device -> ../../../gpiochip6
-rw-r--r-- 1 root root 4096 Jun 26 18:45 direction
drwxr-xr-x 2 root root 0 Jun 26 18:45 power
lrwxrwxrwx 1 root root 0 Jun 26 18:45 subsystem -> ../../../../../../../../class/gpio
-rw-r--r-- 1 root root 4096 Jun 26 18:45 uevent
-rw-r--r-- 1 root root 4096 Jun 26 18:45 value
root@ok3588:/sys/class/gpio/gpio503#
root@ok3588:/sys/class/gpio/gpio503# echo out > direction
root@ok3588:/sys/class/gpio/gpio503# echo 1 > value
root@ok3588:/sys/class/gpio/gpio503#
root@ok3588:/sys/class/gpio/gpio503# cat direction
out
root@ok3588:/sys/class/gpio/gpio503# cat value
1
root@ok3588:/sys/class/gpio/gpio503# echo 0 >value
root@ok3588:/sys/class/gpio/gpio503# cd ..
root@ok3588:/sys/class/gpio# ls -l
total 0
--w------- 1 root root 4096 Jun 26 18:45 export
lrwxrwxrwx 1 root root 0 Jun 26 18:45 gpio503 -> ../../devices/platform/feaa0000.i2c/i2c-2/2-0023/gpiochip6/gpio/gpio503
lrwxrwxrwx 1 root root 0 Jun 26 18:44 gpio504 -> ../../devices/platform/feaa0000.i2c/i2c-2/2-0023/gpiochip6/gpio/gpio504
lrwxrwxrwx 1 root root 0 Jun 26 18:42 gpio505 -> ../../devices/platform/feaa0000.i2c/i2c-2/2-0023/gpiochip6/gpio/gpio505
lrwxrwxrwx 1 root root 0 Jun 26 18:40 gpio506 -> ../../devices/platform/feaa0000.i2c/i2c-2/2-0023/gpiochip6/gpio/gpio506
lrwxrwxrwx 1 root root 0 Jun 26 18:38 gpio507 -> ../../devices/platform/feaa0000.i2c/i2c-2/2-0023/gpiochip6/gpio/gpio507
lrwxrwxrwx 1 root root 0 Jun 26 18:32 gpio508 -> ../../devices/platform/feaa0000.i2c/i2c-2/2-0023/gpiochip6/gpio/gpio508
lrwxrwxrwx 1 root root 0 Jun 26 18:13 gpiochip0 -> ../../devices/platform/fd8a0000.gpio/gpio/gpiochip0
lrwxrwxrwx 1 root root 0 Jun 26 18:13 gpiochip128 -> ../../devices/platform/fec50000.gpio/gpio/gpiochip128
lrwxrwxrwx 1 root root 0 Jun 26 18:13 gpiochip32 -> ../../devices/platform/fec20000.gpio/gpio/gpiochip32
lrwxrwxrwx 1 root root 0 Jun 26 18:13 gpiochip485 -> ../../devices/platform/feaa0000.i2c/i2c-2/2-0023/gpio/gpiochip485
lrwxrwxrwx 1 root root 0 Jun 26 18:13 gpiochip509 -> ../../devices/platform/feb20000.spi/spi_master/spi2/spi2.0/rk806-pinctrl.1.auto/gpio/gpiochip509
lrwxrwxrwx 1 root root 0 Jun 26 18:13 gpiochip64 -> ../../devices/platform/fec30000.gpio/gpio/gpiochip64
lrwxrwxrwx 1 root root 0 Jun 26 18:13 gpiochip96 -> ../../devices/platform/fec40000.gpio/gpio/gpiochip96
--w------- 1 root root 4096 Jun 26 18:13 unexport
root@ok3588:/sys/class/gpio#
root@ok3588:/sys/class/gpio#
root@ok3588:/sys/class/gpio# echo 502 > export
root@ok3588:/sys/class/gpio# ls -l
total 0
--w------- 1 root root 4096 Jun 26 18:46 export
lrwxrwxrwx 1 root root 0 Jun 26 18:46 gpio502 -> ../../devices/platform/feaa0000.i2c/i2c-2/2-0023/gpiochip6/gpio/gpio502
lrwxrwxrwx 1 root root 0 Jun 26 18:45 gpio503 -> ../../devices/platform/feaa0000.i2c/i2c-2/2-0023/gpiochip6/gpio/gpio503
lrwxrwxrwx 1 root root 0 Jun 26 18:44 gpio504 -> ../../devices/platform/feaa0000.i2c/i2c-2/2-0023/gpiochip6/gpio/gpio504
lrwxrwxrwx 1 root root 0 Jun 26 18:42 gpio505 -> ../../devices/platform/feaa0000.i2c/i2c-2/2-0023/gpiochip6/gpio/gpio505
lrwxrwxrwx 1 root root 0 Jun 26 18:40 gpio506 -> ../../devices/platform/feaa0000.i2c/i2c-2/2-0023/gpiochip6/gpio/gpio506
lrwxrwxrwx 1 root root 0 Jun 26 18:38 gpio507 -> ../../devices/platform/feaa0000.i2c/i2c-2/2-0023/gpiochip6/gpio/gpio507
lrwxrwxrwx 1 root root 0 Jun 26 18:32 gpio508 -> ../../devices/platform/feaa0000.i2c/i2c-2/2-0023/gpiochip6/gpio/gpio508
lrwxrwxrwx 1 root root 0 Jun 26 18:13 gpiochip0 -> ../../devices/platform/fd8a0000.gpio/gpio/gpiochip0
lrwxrwxrwx 1 root root 0 Jun 26 18:13 gpiochip128 -> ../../devices/platform/fec50000.gpio/gpio/gpiochip128
lrwxrwxrwx 1 root root 0 Jun 26 18:13 gpiochip32 -> ../../devices/platform/fec20000.gpio/gpio/gpiochip32
lrwxrwxrwx 1 root root 0 Jun 26 18:13 gpiochip485 -> ../../devices/platform/feaa0000.i2c/i2c-2/2-0023/gpio/gpiochip485
lrwxrwxrwx 1 root root 0 Jun 26 18:13 gpiochip509 -> ../../devices/platform/feb20000.spi/spi_master/spi2/spi2.0/rk806-pinctrl.1.auto/gpio/gpiochip509
lrwxrwxrwx 1 root root 0 Jun 26 18:13 gpiochip64 -> ../../devices/platform/fec30000.gpio/gpio/gpiochip64
lrwxrwxrwx 1 root root 0 Jun 26 18:13 gpiochip96 -> ../../devices/platform/fec40000.gpio/gpio/gpiochip96
--w------- 1 root root 4096 Jun 26 18:13 unexport
root@ok3588:/sys/class/gpio#
root@ok3588:/sys/class/gpio# cd gpio502
root@ok3588:/sys/class/gpio/gpio502# ls -l
total 0
-rw-r--r-- 1 root root 4096 Jun 26 18:46 active_low
lrwxrwxrwx 1 root root 0 Jun 26 18:46 device -> ../../../gpiochip6
-rw-r--r-- 1 root root 4096 Jun 26 18:46 direction
drwxr-xr-x 2 root root 0 Jun 26 18:46 power
lrwxrwxrwx 1 root root 0 Jun 26 18:46 subsystem -> ../../../../../../../../class/gpio
-rw-r--r-- 1 root root 4096 Jun 26 18:46 uevent
-rw-r--r-- 1 root root 4096 Jun 26 18:46 value
root@ok3588:/sys/class/gpio/gpio502# cat direction
in
root@ok3588:/sys/class/gpio/gpio502# cat value
0
root@ok3588:/sys/class/gpio/gpio502# echo out > direction
root@ok3588:/sys/class/gpio/gpio502# echo 1 > value
root@ok3588:/sys/class/gpio/gpio502#
root@ok3588:/sys/class/gpio/gpio502# cat direction
out
root@ok3588:/sys/class/gpio/gpio502# cat value
1
root@ok3588:/sys/class/gpio/gpio502#
root@ok3588:/sys/class/gpio/gpio502# echo 0 > value
root@ok3588:/sys/class/gpio/gpio502# cat value
0
root@ok3588:/sys/class/gpio/gpio502# cd ..
root@ok3588:/sys/class/gpio#
root@ok3588:/sys/class/gpio# ls -l
total 0
--w------- 1 root root 4096 Jun 26 18:46 export
lrwxrwxrwx 1 root root 0 Jun 26 18:46 gpio502 -> ../../devices/platform/feaa0000.i2c/i2c-2/2-0023/gpiochip6/gpio/gpio502
lrwxrwxrwx 1 root root 0 Jun 26 18:45 gpio503 -> ../../devices/platform/feaa0000.i2c/i2c-2/2-0023/gpiochip6/gpio/gpio503
lrwxrwxrwx 1 root root 0 Jun 26 18:44 gpio504 -> ../../devices/platform/feaa0000.i2c/i2c-2/2-0023/gpiochip6/gpio/gpio504
lrwxrwxrwx 1 root root 0 Jun 26 18:42 gpio505 -> ../../devices/platform/feaa0000.i2c/i2c-2/2-0023/gpiochip6/gpio/gpio505
lrwxrwxrwx 1 root root 0 Jun 26 18:40 gpio506 -> ../../devices/platform/feaa0000.i2c/i2c-2/2-0023/gpiochip6/gpio/gpio506
lrwxrwxrwx 1 root root 0 Jun 26 18:38 gpio507 -> ../../devices/platform/feaa0000.i2c/i2c-2/2-0023/gpiochip6/gpio/gpio507
lrwxrwxrwx 1 root root 0 Jun 26 18:32 gpio508 -> ../../devices/platform/feaa0000.i2c/i2c-2/2-0023/gpiochip6/gpio/gpio508
lrwxrwxrwx 1 root root 0 Jun 26 18:13 gpiochip0 -> ../../devices/platform/fd8a0000.gpio/gpio/gpiochip0
lrwxrwxrwx 1 root root 0 Jun 26 18:13 gpiochip128 -> ../../devices/platform/fec50000.gpio/gpio/gpiochip128
lrwxrwxrwx 1 root root 0 Jun 26 18:13 gpiochip32 -> ../../devices/platform/fec20000.gpio/gpio/gpiochip32
lrwxrwxrwx 1 root root 0 Jun 26 18:13 gpiochip485 -> ../../devices/platform/feaa0000.i2c/i2c-2/2-0023/gpio/gpiochip485
lrwxrwxrwx 1 root root 0 Jun 26 18:13 gpiochip509 -> ../../devices/platform/feb20000.spi/spi_master/spi2/spi2.0/rk806-pinctrl.1.auto/gpio/gpiochip509
lrwxrwxrwx 1 root root 0 Jun 26 18:13 gpiochip64 -> ../../devices/platform/fec30000.gpio/gpio/gpiochip64
lrwxrwxrwx 1 root root 0 Jun 26 18:13 gpiochip96 -> ../../devices/platform/fec40000.gpio/gpio/gpiochip96
--w------- 1 root root 4096 Jun 26 18:13 unexport
root@ok3588:/sys/class/gpio#
root@ok3588:/sys/class/gpio# echo 501 > export
root@ok3588:/sys/class/gpio# ls -l
total 0
--w------- 1 root root 4096 Jun 26 18:47 export
lrwxrwxrwx 1 root root 0 Jun 26 18:47 gpio501 -> ../../devices/platform/feaa0000.i2c/i2c-2/2-0023/gpiochip6/gpio/gpio501
lrwxrwxrwx 1 root root 0 Jun 26 18:46 gpio502 -> ../../devices/platform/feaa0000.i2c/i2c-2/2-0023/gpiochip6/gpio/gpio502
lrwxrwxrwx 1 root root 0 Jun 26 18:45 gpio503 -> ../../devices/platform/feaa0000.i2c/i2c-2/2-0023/gpiochip6/gpio/gpio503
lrwxrwxrwx 1 root root 0 Jun 26 18:44 gpio504 -> ../../devices/platform/feaa0000.i2c/i2c-2/2-0023/gpiochip6/gpio/gpio504
lrwxrwxrwx 1 root root 0 Jun 26 18:42 gpio505 -> ../../devices/platform/feaa0000.i2c/i2c-2/2-0023/gpiochip6/gpio/gpio505
lrwxrwxrwx 1 root root 0 Jun 26 18:40 gpio506 -> ../../devices/platform/feaa0000.i2c/i2c-2/2-0023/gpiochip6/gpio/gpio506
lrwxrwxrwx 1 root root 0 Jun 26 18:38 gpio507 -> ../../devices/platform/feaa0000.i2c/i2c-2/2-0023/gpiochip6/gpio/gpio507
lrwxrwxrwx 1 root root 0 Jun 26 18:32 gpio508 -> ../../devices/platform/feaa0000.i2c/i2c-2/2-0023/gpiochip6/gpio/gpio508
lrwxrwxrwx 1 root root 0 Jun 26 18:13 gpiochip0 -> ../../devices/platform/fd8a0000.gpio/gpio/gpiochip0
lrwxrwxrwx 1 root root 0 Jun 26 18:13 gpiochip128 -> ../../devices/platform/fec50000.gpio/gpio/gpiochip128
lrwxrwxrwx 1 root root 0 Jun 26 18:13 gpiochip32 -> ../../devices/platform/fec20000.gpio/gpio/gpiochip32
lrwxrwxrwx 1 root root 0 Jun 26 18:13 gpiochip485 -> ../../devices/platform/feaa0000.i2c/i2c-2/2-0023/gpio/gpiochip485
lrwxrwxrwx 1 root root 0 Jun 26 18:13 gpiochip509 -> ../../devices/platform/feb20000.spi/spi_master/spi2/spi2.0/rk806-pinctrl.1.auto/gpio/gpiochip509
lrwxrwxrwx 1 root root 0 Jun 26 18:13 gpiochip64 -> ../../devices/platform/fec30000.gpio/gpio/gpiochip64
lrwxrwxrwx 1 root root 0 Jun 26 18:13 gpiochip96 -> ../../devices/platform/fec40000.gpio/gpio/gpiochip96
--w------- 1 root root 4096 Jun 26 18:13 unexport
root@ok3588:/sys/class/gpio# cd gpio501/
root@ok3588:/sys/class/gpio/gpio501# ls -l
total 0
-rw-r--r-- 1 root root 4096 Jun 26 18:47 active_low
lrwxrwxrwx 1 root root 0 Jun 26 18:47 device -> ../../../gpiochip6
-rw-r--r-- 1 root root 4096 Jun 26 18:47 direction
drwxr-xr-x 2 root root 0 Jun 26 18:47 power
lrwxrwxrwx 1 root root 0 Jun 26 18:47 subsystem -> ../../../../../../../../class/gpio
-rw-r--r-- 1 root root 4096 Jun 26 18:47 uevent
-rw-r--r-- 1 root root 4096 Jun 26 18:47 value
root@ok3588:/sys/class/gpio/gpio501# cat direction
in
root@ok3588:/sys/class/gpio/gpio501# cat value
0
root@ok3588:/sys/class/gpio/gpio501#
root@ok3588:/sys/class/gpio/gpio501# echo out > direction
root@ok3588:/sys/class/gpio/gpio501# echo 1 > value
root@ok3588:/sys/class/gpio/gpio501#
root@ok3588:/sys/class/gpio/gpio501# cat direction
out
root@ok3588:/sys/class/gpio/gpio501# cat value
1
root@ok3588:/sys/class/gpio/gpio501#
root@ok3588:/sys/class/gpio/gpio501# echo 0 > value
root@ok3588:/sys/class/gpio/gpio501# cd ..
root@ok3588:/sys/class/gpio#
root@ok3588:/sys/class/gpio# ls -l
total 0
--w------- 1 root root 4096 Jun 26 18:47 export
lrwxrwxrwx 1 root root 0 Jun 26 18:47 gpio501 -> ../../devices/platform/feaa0000.i2c/i2c-2/2-0023/gpiochip6/gpio/gpio501
lrwxrwxrwx 1 root root 0 Jun 26 18:46 gpio502 -> ../../devices/platform/feaa0000.i2c/i2c-2/2-0023/gpiochip6/gpio/gpio502
lrwxrwxrwx 1 root root 0 Jun 26 18:45 gpio503 -> ../../devices/platform/feaa0000.i2c/i2c-2/2-0023/gpiochip6/gpio/gpio503
lrwxrwxrwx 1 root root 0 Jun 26 18:44 gpio504 -> ../../devices/platform/feaa0000.i2c/i2c-2/2-0023/gpiochip6/gpio/gpio504
lrwxrwxrwx 1 root root 0 Jun 26 18:42 gpio505 -> ../../devices/platform/feaa0000.i2c/i2c-2/2-0023/gpiochip6/gpio/gpio505
lrwxrwxrwx 1 root root 0 Jun 26 18:40 gpio506 -> ../../devices/platform/feaa0000.i2c/i2c-2/2-0023/gpiochip6/gpio/gpio506
lrwxrwxrwx 1 root root 0 Jun 26 18:38 gpio507 -> ../../devices/platform/feaa0000.i2c/i2c-2/2-0023/gpiochip6/gpio/gpio507
lrwxrwxrwx 1 root root 0 Jun 26 18:32 gpio508 -> ../../devices/platform/feaa0000.i2c/i2c-2/2-0023/gpiochip6/gpio/gpio508
lrwxrwxrwx 1 root root 0 Jun 26 18:13 gpiochip0 -> ../../devices/platform/fd8a0000.gpio/gpio/gpiochip0
lrwxrwxrwx 1 root root 0 Jun 26 18:13 gpiochip128 -> ../../devices/platform/fec50000.gpio/gpio/gpiochip128
lrwxrwxrwx 1 root root 0 Jun 26 18:13 gpiochip32 -> ../../devices/platform/fec20000.gpio/gpio/gpiochip32
lrwxrwxrwx 1 root root 0 Jun 26 18:13 gpiochip485 -> ../../devices/platform/feaa0000.i2c/i2c-2/2-0023/gpio/gpiochip485
lrwxrwxrwx 1 root root 0 Jun 26 18:13 gpiochip509 -> ../../devices/platform/feb20000.spi/spi_master/spi2/spi2.0/rk806-pinctrl.1.auto/gpio/gpiochip509
lrwxrwxrwx 1 root root 0 Jun 26 18:13 gpiochip64 -> ../../devices/platform/fec30000.gpio/gpio/gpiochip64
lrwxrwxrwx 1 root root 0 Jun 26 18:13 gpiochip96 -> ../../devices/platform/fec40000.gpio/gpio/gpiochip96
--w------- 1 root root 4096 Jun 26 18:13 unexport
root@ok3588:/sys/class/gpio#
root@ok3588:/sys/class/gpio#
root@ok3588:/sys/class/gpio# echo 498 > export
root@ok3588:/sys/class/gpio# ls -l
total 0
--w------- 1 root root 4096 Jun 26 18:48 export
lrwxrwxrwx 1 root root 0 Jun 26 18:48 gpio498 -> ../../devices/platform/feaa0000.i2c/i2c-2/2-0023/gpiochip6/gpio/gpio498
lrwxrwxrwx 1 root root 0 Jun 26 18:47 gpio501 -> ../../devices/platform/feaa0000.i2c/i2c-2/2-0023/gpiochip6/gpio/gpio501
lrwxrwxrwx 1 root root 0 Jun 26 18:46 gpio502 -> ../../devices/platform/feaa0000.i2c/i2c-2/2-0023/gpiochip6/gpio/gpio502
lrwxrwxrwx 1 root root 0 Jun 26 18:45 gpio503 -> ../../devices/platform/feaa0000.i2c/i2c-2/2-0023/gpiochip6/gpio/gpio503
lrwxrwxrwx 1 root root 0 Jun 26 18:44 gpio504 -> ../../devices/platform/feaa0000.i2c/i2c-2/2-0023/gpiochip6/gpio/gpio504
lrwxrwxrwx 1 root root 0 Jun 26 18:42 gpio505 -> ../../devices/platform/feaa0000.i2c/i2c-2/2-0023/gpiochip6/gpio/gpio505
lrwxrwxrwx 1 root root 0 Jun 26 18:40 gpio506 -> ../../devices/platform/feaa0000.i2c/i2c-2/2-0023/gpiochip6/gpio/gpio506
lrwxrwxrwx 1 root root 0 Jun 26 18:38 gpio507 -> ../../devices/platform/feaa0000.i2c/i2c-2/2-0023/gpiochip6/gpio/gpio507
lrwxrwxrwx 1 root root 0 Jun 26 18:32 gpio508 -> ../../devices/platform/feaa0000.i2c/i2c-2/2-0023/gpiochip6/gpio/gpio508
lrwxrwxrwx 1 root root 0 Jun 26 18:13 gpiochip0 -> ../../devices/platform/fd8a0000.gpio/gpio/gpiochip0
lrwxrwxrwx 1 root root 0 Jun 26 18:13 gpiochip128 -> ../../devices/platform/fec50000.gpio/gpio/gpiochip128
lrwxrwxrwx 1 root root 0 Jun 26 18:13 gpiochip32 -> ../../devices/platform/fec20000.gpio/gpio/gpiochip32
lrwxrwxrwx 1 root root 0 Jun 26 18:13 gpiochip485 -> ../../devices/platform/feaa0000.i2c/i2c-2/2-0023/gpio/gpiochip485
lrwxrwxrwx 1 root root 0 Jun 26 18:13 gpiochip509 -> ../../devices/platform/feb20000.spi/spi_master/spi2/spi2.0/rk806-pinctrl.1.auto/gpio/gpiochip509
lrwxrwxrwx 1 root root 0 Jun 26 18:13 gpiochip64 -> ../../devices/platform/fec30000.gpio/gpio/gpiochip64
lrwxrwxrwx 1 root root 0 Jun 26 18:13 gpiochip96 -> ../../devices/platform/fec40000.gpio/gpio/gpiochip96
--w------- 1 root root 4096 Jun 26 18:13 unexport
root@ok3588:/sys/class/gpio# cd gpio498
root@ok3588:/sys/class/gpio/gpio498# ls -l
total 0
-rw-r--r-- 1 root root 4096 Jun 26 18:48 active_low
lrwxrwxrwx 1 root root 0 Jun 26 18:48 device -> ../../../gpiochip6
-rw-r--r-- 1 root root 4096 Jun 26 18:48 direction
drwxr-xr-x 2 root root 0 Jun 26 18:48 power
lrwxrwxrwx 1 root root 0 Jun 26 18:48 subsystem -> ../../../../../../../../class/gpio
-rw-r--r-- 1 root root 4096 Jun 26 18:48 uevent
-rw-r--r-- 1 root root 4096 Jun 26 18:48 value
root@ok3588:/sys/class/gpio/gpio498# cat direction
in
root@ok3588:/sys/class/gpio/gpio498# cat value
0
root@ok3588:/sys/class/gpio/gpio498#
root@ok3588:/sys/class/gpio/gpio498# echo out > direction
root@ok3588:/sys/class/gpio/gpio498# echo 1 > value
root@ok3588:/sys/class/gpio/gpio498#
root@ok3588:/sys/class/gpio/gpio498# cat direction
out
root@ok3588:/sys/class/gpio/gpio498# cat value
1
root@ok3588:/sys/class/gpio/gpio498#
root@ok3588:/sys/class/gpio/gpio498# cd ..
root@ok3588:/sys/class/gpio# ls -l
total 0
--w------- 1 root root 4096 Jun 26 18:48 export
lrwxrwxrwx 1 root root 0 Jun 26 18:48 gpio498 -> ../../devices/platform/feaa0000.i2c/i2c-2/2-0023/gpiochip6/gpio/gpio498
lrwxrwxrwx 1 root root 0 Jun 26 18:47 gpio501 -> ../../devices/platform/feaa0000.i2c/i2c-2/2-0023/gpiochip6/gpio/gpio501
lrwxrwxrwx 1 root root 0 Jun 26 18:46 gpio502 -> ../../devices/platform/feaa0000.i2c/i2c-2/2-0023/gpiochip6/gpio/gpio502
lrwxrwxrwx 1 root root 0 Jun 26 18:45 gpio503 -> ../../devices/platform/feaa0000.i2c/i2c-2/2-0023/gpiochip6/gpio/gpio503
lrwxrwxrwx 1 root root 0 Jun 26 18:44 gpio504 -> ../../devices/platform/feaa0000.i2c/i2c-2/2-0023/gpiochip6/gpio/gpio504
lrwxrwxrwx 1 root root 0 Jun 26 18:42 gpio505 -> ../../devices/platform/feaa0000.i2c/i2c-2/2-0023/gpiochip6/gpio/gpio505
lrwxrwxrwx 1 root root 0 Jun 26 18:40 gpio506 -> ../../devices/platform/feaa0000.i2c/i2c-2/2-0023/gpiochip6/gpio/gpio506
lrwxrwxrwx 1 root root 0 Jun 26 18:38 gpio507 -> ../../devices/platform/feaa0000.i2c/i2c-2/2-0023/gpiochip6/gpio/gpio507
lrwxrwxrwx 1 root root 0 Jun 26 18:32 gpio508 -> ../../devices/platform/feaa0000.i2c/i2c-2/2-0023/gpiochip6/gpio/gpio508
lrwxrwxrwx 1 root root 0 Jun 26 18:13 gpiochip0 -> ../../devices/platform/fd8a0000.gpio/gpio/gpiochip0
lrwxrwxrwx 1 root root 0 Jun 26 18:13 gpiochip128 -> ../../devices/platform/fec50000.gpio/gpio/gpiochip128
lrwxrwxrwx 1 root root 0 Jun 26 18:13 gpiochip32 -> ../../devices/platform/fec20000.gpio/gpio/gpiochip32
lrwxrwxrwx 1 root root 0 Jun 26 18:13 gpiochip485 -> ../../devices/platform/feaa0000.i2c/i2c-2/2-0023/gpio/gpiochip485
lrwxrwxrwx 1 root root 0 Jun 26 18:13 gpiochip509 -> ../../devices/platform/feb20000.spi/spi_master/spi2/spi2.0/rk806-pinctrl.1.auto/gpio/gpiochip509
lrwxrwxrwx 1 root root 0 Jun 26 18:13 gpiochip64 -> ../../devices/platform/fec30000.gpio/gpio/gpiochip64
lrwxrwxrwx 1 root root 0 Jun 26 18:13 gpiochip96 -> ../../devices/platform/fec40000.gpio/gpio/gpiochip96
--w------- 1 root root 4096 Jun 26 18:13 unexport
root@ok3588:/sys/class/gpio#
root@ok3588:/sys/class/gpio#
root@ok3588:/sys/class/gpio# echo 500 > export
root@ok3588:/sys/class/gpio#
root@ok3588:/sys/class/gpio# ls -l
total 0
--w------- 1 root root 4096 Jun 26 18:49 export
lrwxrwxrwx 1 root root 0 Jun 26 18:48 gpio498 -> ../../devices/platform/feaa0000.i2c/i2c-2/2-0023/gpiochip6/gpio/gpio498
lrwxrwxrwx 1 root root 0 Jun 26 18:49 gpio500 -> ../../devices/platform/feaa0000.i2c/i2c-2/2-0023/gpiochip6/gpio/gpio500
lrwxrwxrwx 1 root root 0 Jun 26 18:47 gpio501 -> ../../devices/platform/feaa0000.i2c/i2c-2/2-0023/gpiochip6/gpio/gpio501
lrwxrwxrwx 1 root root 0 Jun 26 18:46 gpio502 -> ../../devices/platform/feaa0000.i2c/i2c-2/2-0023/gpiochip6/gpio/gpio502
lrwxrwxrwx 1 root root 0 Jun 26 18:45 gpio503 -> ../../devices/platform/feaa0000.i2c/i2c-2/2-0023/gpiochip6/gpio/gpio503
lrwxrwxrwx 1 root root 0 Jun 26 18:44 gpio504 -> ../../devices/platform/feaa0000.i2c/i2c-2/2-0023/gpiochip6/gpio/gpio504
lrwxrwxrwx 1 root root 0 Jun 26 18:42 gpio505 -> ../../devices/platform/feaa0000.i2c/i2c-2/2-0023/gpiochip6/gpio/gpio505
lrwxrwxrwx 1 root root 0 Jun 26 18:40 gpio506 -> ../../devices/platform/feaa0000.i2c/i2c-2/2-0023/gpiochip6/gpio/gpio506
lrwxrwxrwx 1 root root 0 Jun 26 18:38 gpio507 -> ../../devices/platform/feaa0000.i2c/i2c-2/2-0023/gpiochip6/gpio/gpio507
lrwxrwxrwx 1 root root 0 Jun 26 18:32 gpio508 -> ../../devices/platform/feaa0000.i2c/i2c-2/2-0023/gpiochip6/gpio/gpio508
lrwxrwxrwx 1 root root 0 Jun 26 18:13 gpiochip0 -> ../../devices/platform/fd8a0000.gpio/gpio/gpiochip0
lrwxrwxrwx 1 root root 0 Jun 26 18:13 gpiochip128 -> ../../devices/platform/fec50000.gpio/gpio/gpiochip128
lrwxrwxrwx 1 root root 0 Jun 26 18:13 gpiochip32 -> ../../devices/platform/fec20000.gpio/gpio/gpiochip32
lrwxrwxrwx 1 root root 0 Jun 26 18:13 gpiochip485 -> ../../devices/platform/feaa0000.i2c/i2c-2/2-0023/gpio/gpiochip485
lrwxrwxrwx 1 root root 0 Jun 26 18:13 gpiochip509 -> ../../devices/platform/feb20000.spi/spi_master/spi2/spi2.0/rk806-pinctrl.1.auto/gpio/gpiochip509
lrwxrwxrwx 1 root root 0 Jun 26 18:13 gpiochip64 -> ../../devices/platform/fec30000.gpio/gpio/gpiochip64
lrwxrwxrwx 1 root root 0 Jun 26 18:13 gpiochip96 -> ../../devices/platform/fec40000.gpio/gpio/gpiochip96
--w------- 1 root root 4096 Jun 26 18:13 unexport
root@ok3588:/sys/class/gpio# cd gpio500/
root@ok3588:/sys/class/gpio/gpio500# ls -l
total 0
-rw-r--r-- 1 root root 4096 Jun 26 18:49 active_low
lrwxrwxrwx 1 root root 0 Jun 26 18:49 device -> ../../../gpiochip6
-rw-r--r-- 1 root root 4096 Jun 26 18:49 direction
drwxr-xr-x 2 root root 0 Jun 26 18:49 power
lrwxrwxrwx 1 root root 0 Jun 26 18:49 subsystem -> ../../../../../../../../class/gpio
-rw-r--r-- 1 root root 4096 Jun 26 18:49 uevent
-rw-r--r-- 1 root root 4096 Jun 26 18:49 value
root@ok3588:/sys/class/gpio/gpio500# cat direction
in
root@ok3588:/sys/class/gpio/gpio500# cat value
0
root@ok3588:/sys/class/gpio/gpio500#
root@ok3588:/sys/class/gpio/gpio500# echo out > direction
root@ok3588:/sys/class/gpio/gpio500# echo 1 > value
root@ok3588:/sys/class/gpio/gpio500#
root@ok3588:/sys/class/gpio/gpio500# cat direction
out
root@ok3588:/sys/class/gpio/gpio500# cat value
1
root@ok3588:/sys/class/gpio/gpio500#
root@ok3588:/sys/class/gpio/gpio500# echo 0 > value
root@ok3588:/sys/class/gpio/gpio500# cat direction
out
root@ok3588:/sys/class/gpio/gpio500# cat value
0
root@ok3588:/sys/class/gpio/gpio500#
root@ok3588:/sys/class/gpio/gpio500# echo 1 > value
root@ok3588:/sys/class/gpio/gpio500#
