Method: Neotrellis::Keypad#enable_interrupt

Defined in:
lib/neotrellis/keypad.rb

#enable_interrupt(pin) ⇒ Object

Enable the interruption mode. In this mode, the ‘sync()` method will be automatically called when an interruption is triggered by the Seesaw device. The INT ligne of the keypad need to be connected to this GPIO pin.

Parameters:

  • pin (Integer) —

    GPIO pin to configure for interruption on. Pin number is in the BCM numbering, as reported by Sysfs.



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# File 'lib/neotrellis/keypad.rb', line 140

def enable_interrupt(pin)
	raise "pin must be an integer" unless pin.is_a? Integer

	@interrupt_enabled=true
	@seesaw.write(KEYPAD_BASE, KEYPAD_INTENSET, 0x01)

	@gpio = YaGPIO.new(pin, YaGPIO::INPUT)
	@gpio.set_interrupt(YaGPIO::EDGE_FALLING) do 
		puts "DEBUG Interrupt received." if @debug
		sync
	end
end