使用 gpiod 从命令行控制 GPIO
Install gpiod
sudo apt update
sudo apt install gpiod
Six command-line tools are available:
* gpiodetect - list all gpiochips present on the system, their names, labels
and number of GPIO lines
* gpioinfo - list all lines of specified gpiochips, their names, consumers,
direction, active state and additional flags
* gpioget - read values of specified GPIO lines
* gpioset - set values of specified GPIO lines, potentially keep the lines
exported and wait until timeout, user input or signal
* gpiofind - find the gpiochip name and line offset given the line name
* gpiomon - wait for events on GPIO lines, specify which events to watch,
how many events to process before exiting or if the events
should be reported to the console



