gpiotool 应用方式

登陆IMM系统，在串口下查看系统状态

$ cd /usr/local/bin/

 ./gpiotool 

Gpio Test Tool - Copyright (c) 2006 - 2007 cetc.

Usage : gpiotool <gpionumber> <option> [--verbose]

        --get-dir:              Get the specified gpio's direction

        --set-dir-input:        Set the specified gpio to be an input

        --set-dir-output:       Set the specified gpio to be an output

        --get-pol:              Get the specified gpio polarity

        --set-pol-high:         Set the specified gpio polarity

        --set-pol-low:          Set the specified gpio polarity

        --get-pull-up-down:             Get the specified gpio pull-up/pull-down control bits

        --set-pull-down:        Set Internal Pull-down enabled for specified gpio

        --set-pull-up:          Set Internal Pull-up enabled for specified gpio

        --set-no-pull-up-down:          Set No pull-up/Pull-down for the specified gpio

        --get-gpios-data:       Get the data for multiple gpios, with spaces between each number

        --set-gpios-high:       Set the data to high for multiple gpios, with spaces between each number

        --set-gpios-low:        Set the data to low for multiple gpios, with spaces between each number

        --get-gpios-dir:        Get the direction for multiple gpios, with spaces between each number

        --set-gpios-dir-input:          Set the direction to input for multiple gpios, with spaces between each number

        --set-gpios-dir-output:         Set the direction to output for multiple gpios, with spaces between each number

        --get-data:             Get the specified gpio's data

        --set-data-high:        Set the specified gpio high

        --set-data-low:         Set the specified gpio low

        --set-od-high:          Set the specified gpio as open drain output line with high level

        --set-od-low:           Set the specified gpio as open drain output line with low level

        --set-gpio-ints:        Set the gpio interrupts (as specified in the code)

        --wait-for-ints:        Wait for the gpio interrupts (as specified in the code)

        --set-sgpio-int-cont-mode:      Set the continous mode after interrupt

        --reset-gpio-ints:      Reset the gpio interrupts

        --enable-debouncing:    Enable GPIO Debouncing

        --disable-debouncing:   Disable GPIO Debouncing

        --get-debounce-event:   Get GPIO Debounce event

        --get-debounce-clock:   Get GPIO Debounce clock value

        --set-debounce-clock:   set GPIO Debounce clock value

        --reg-reading-on-int:   Register the reding address on gpio interrupt

        --get-reading-on-int:   Get Registered reading on gpio interrupt.

        --verbose:              Verbose for Debugging messages 

翻译提示步骤，查看使用格式

$ ./gpiotool 19 --set-dir-output   /*设置方向*/

$ ./gpiotool 19 --get-dir          /*查看方向*/

Output Pin

$ ./gpiotool 19 --get-data         /*查看高低*/

Pin is High 

$ ./gpiotool 19 --set-data-low     /*拉低*/