cd /sys/class/misc/mtgpio/
tpw8735b_t3h:/sys/class/misc/mtgpio # ls
dev pin power single_pin subsystem uevent
tpw8735b_t3h:/sys/class/misc/mtgpio # cat pin | grep 60
60:01111110
160:10000110
cho -wdout 60 0 > pin <
tpw8735b_t3h:/sys/class/misc/mtgpio # cat pin | grep 60
60:01001110
160:10000110
tpw8735b_t3h:/sys/class/misc/mtgpio # echo -wdout 60 1 > pin
tpw8735b_t3h:/sys/class/misc/mtgpio # echo -wdout 60 0 > pin
tpw8735b_t3h:/sys/class/misc/mtgpio # echo -wdout 59 0 > pin
tpw8735b_t3h:/sys/class/misc/mtgpio # echo -wdout 59 1 > pin
另一种情况
adb shell
cd sys
find . -name mt_gpio 会找到 这样类似的pin
sys/devices/platform/1000b000.pinctrl/mt_gpio
cat sys/devices/platform/1000b000.pinctrl/mt_gpio 会有 GPIO 口出现
直接echo out pin脚号 0/1 > sys/devices/platform/1000b000.pinctrl/mt_gpio 即可