1-- $NetBSD: gpio.lua,v 1.3 2014/07/19 18:38:34 lneto Exp $ 2 3local gpio = require 'gpio' 4 5print(gpio._VERSION .. ' - ' .. gpio._DESCRIPTION) 6print(gpio._COPYRIGHT) 7print() 8 9g = gpio.open('/dev/gpio0') 10 11local npins = g:info() 12 13print('gpio0 has ' .. npins .. ' pins.') 14 15for n = 0, npins - 1 do 16 print('pin ' .. n .. ': ' .. g:read(n)) 17end 18 19local oldval = g:write(31, gpio.PIN_HIGH) 20print('pin 31: ' .. oldval .. ' -> ' .. g:read(31)) 21 22oldval = g:toggle(31) 23print('pin 31: ' .. oldval .. ' -> ' .. g:read(31)) 24 25g:write(31, gpio.PIN_LOW) 26 27g:write(31, 5) 28 29