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/*
* Author: Henry Bruce <henry.bruce@intel.com>
* Copyright (c) 2016 Intel Corporation.
*
* Permission is hereby granted, free of charge, to any person obtaining
* a copy of this software and associated documentation files (the
* "Software"), to deal in the Software without restriction, including
* without limitation the rights to use, copy, modify, merge, publish,
* distribute, sublicense, and/or sell copies of the Software, and to
* permit persons to whom the Software is furnished to do so, subject to
* the following conditions:
*
* The above copyright notice and this permission notice shall be
* included in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
* LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
* OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
* WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*/
var mraa = require('mraa');
const readline = require('readline');
const rl = readline.createInterface({
input: process.stdin,
output: process.stdout
});
function printUsage() {
console.log("version Print version");
console.log("get pin Get pin level");
console.log("set pin level Set pin level");
console.log("monitor pin Monitor pin level changes");
}
function getVersion() {
console.log('MRAA Version: ' + mraa.getVersion());
}
function setPin() {
var pinNumber = arguments[0];
var pinValue = arguments[1];
var pin = new mraa.Gpio(pinNumber);
pin.dir(mraa.DIR_OUT);
pin.write(pinNumber, pinValue);
}
function getPin() {
var pinNumber = arguments[0];
var pin = new mraa.Gpio(pinNumber);
pin.dir(mraa.DIR_IN);
console.log('Gpio ' + pinNumber + ' = ' + pin.read());
}
function onPinLevelChange() {
console.log('gpio level change');
}
function monitorPin() {
var pinNumber = arguments[0];
try {
var pin = new mraa.Gpio(pinNumber);
pin.dir(mraa.DIR_IN);
pin.isr(mraa.EDGE_BOTH, onPinLevelChange);
rl.question('Press ENTER to stop', function(answer) {
rl.close();
pin.isrExit();
});
} catch (err) {
console.log(err.message);
}
}
const args = process.argv;
const argc = args.length;
if (argc >= 3) {
const cmd = args[2];
switch (args[2]) {
case "version":
getVersion();
break;
case "get":
var pinNumber = parseInt(args[3]);
getPin(pinNumber);
break;
case "set":
var pinNumber = parseInt(args[3]);
var pinValue = parseInt(args[4]);
getPin(pinNumber, pinValue);
break;
case "monitor":
var pinNumber = parseInt(args[3]);
monitorPin(pinNumber);
break;
default:
console.log("Invalid command " + args[2]);
break;
}
} else {
console.log("Command not specified");
printUsage();
}
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