classstuds::Gpio

sys::Obj
  studs::Gpio

Gpio provides high level access to GPIO pins through the Linux /sys/class/gpio interface.

See Gpio chapter for details.

close: Void close()
Close this port.
listen: Void listen(Str mode, |Int callback)
Register an interrupt handler to listen for GPIO output changes. The mode should be one of the strings "rising", "falling" or "both" to indicate which edge(s) the ISR is to be triggered on. Invoke the given callback function when a change occurs. This method will block listening until close is called.
open: static Gpio open(Int pin, Str dir)
Open a GPIO port with given pin and direction, where dir is "in" or "out".
read: Int read()
Read the current value of the pin.
write: This write(Int val)
Write the given value to the GPIO. The GPIO should be configured as an output. Valid values are 0 for logic low, or 1 for logic high. Other non-zero values will result in logic high being output. Returns this.