[−][src]Function gpio_utils::export::export

pub fn export(pin_config: &PinConfig, symlink_root: Option<&str>) -> Result<()>

Export the pin specified in the provided config

Exporting a pin (in this context) involves, a few different actions:

  1. The GPIO pin itself is exported (via /sys/class/gpio/export)
  2. For each GPIO name/alias, a symlink is created from /var/run/gpio/<name> -> /sys/class/gpio<num>.

If the GPIO is already exported, this function will continue without an error as the desired end state is achieved.