Update to latest lininoIO

[rwaldron]

https://github.com/linino/linino_distro/tree/lininoIO

[scenaristeur]

Hi ,
perhaps it could help :
I got blink.js and servosweeep.js working on my Arduino Yun :

root@arduino:~/johnny# uname -a
Linux arduino 3.3.8 #1 Thu Jun 2 12:28:33 CEST 2016 mips GNU/Linux
root@arduino:~/johnny# lininoio -v
DISTRIB_ID="Linino"
DISTRIB_REVISION="223d5a8"
BUILD_DATE="2016-06-01"

with this code :

var five = require("johnny-five");
var Nino = require("nino-io");
var board = new five.Board({
  io: new Nino({
    layout: "Arduino Yun"
  })
});

board.on("ready", function() {
  console.log("Ready");

  var led = new five.Led(13);

  led.blink(500);
});

i've just run, in ssh console ! : "lininoio start" and reboot. (more about lininoio on this page : http://wiki.linino.org/doku.php?id=wiki:upgradetolininoio )

and this code for servosweep works for me too :

var five = require("johnny-five");
var Nino = require("nino-io");

var board = new five.Board({
	io: new Nino({
		layout: "Arduino Yun"
	})
});

board.on("ready", function() {

  var servo = new five.Servo(9);

  // Sweep from 0-180 and repeat.
  servo.sweep();
});

For my tests, i used a servo attached to pin 9 and powered with 3.3V and not 5V (because it reboots my card) and this code :

var servo = require('./lib/servo');

servo.attach(); 

var angles = [0, 90, 45, 70, 180, 0];
for (var i=0; i<angles.length; i++){
	var a = angles[i];
	servo.write(a);
	servo.sleep(1000);
}

with that really really dirty dirty dirty test lib of my own, stored in a 'lib' directory :

//http://www.arduino.org/learning/tutorials/advanced-guides/how-to-pilot-gpio-on-lininoio-2

var exec = require('child_process').exec;

exports.write = function (angle){
	var duty = angle2duty_cycle(angle);
	console.log(duty);
	var cmdDuty = 'echo '+duty+'  > /sys/class/pwm/pwmchip0/D9/duty_cycle';
	var go = 'echo 1  > /sys/class/pwm/pwmchip0/D9/enable';
	var stop = 'echo 0  > /sys/class/pwm/pwmchip0/D9/enable';
	exec(cmdDuty, function(error, stdout, stderr) {
		//console.log('duty');
		//console.log(stdout);
		if(stderr){
			console.log(stderr);
		}
	});	
	exec(go, function(error, stdout, stderr) {
		//console.log('go');
		//console.log(stdout);
		if(stderr){
			console.log(stderr);
		}
	});
	this.sleep(500);
	exec(stop, function(error, stdout, stderr) {
		//console.log('stop');
		//console.log(stdout);
		if(stderr){
			console.log(stderr);
		}
	});
}

exports.attach = function(){
	var cmdExport = 'echo 1 > /sys/class/pwm/pwmchip0/export';
	var cmdPeriod = 'echo 20000000  > /sys/class/pwm/pwmchip0/D9/period';
	
	exec(cmdExport, function(error, stdout, stderr) {
		//console.log('export');
		//console.log(stdout);
		//console.log(stderr);
	});
	exec(cmdPeriod, function(error, stdout, stderr) {
		//console.log('period');
		// console.log(stdout);
		//console.log(stderr);
	});
}

function map_range(value, low1, high1, low2, high2) {
	return low2 + (high2 - low2) * (value - low1) / (high1 - low1);
}
function angle2duty_cycle(angle){
	return Math.round(map_range (angle, 0, 180, 560000, 2400000));
}
exports.sleep = function ( sleepDuration ){
    var now = new Date().getTime();
    while(new Date().getTime() < now + sleepDuration){ /* do nothing */ } 
}


/*
	echo 1 > /sys/class/pwm/pwmchip0/export
	echo 20000000  > /sys/class/pwm/pwmchip0/D9/period
	echo 560000  > /sys/class/pwm/pwmchip0/D9/duty_cycle
	echo 1  > /sys/class/pwm/pwmchip0/D9/enable
*/
//gestion YUN

but one advantage from my dirty lib comparing with the nino-io one is that the servo doesn't vibrate as if he was always working, this can be done with the 'stop' command that writes 0 in the enable file. (" echo 0 > /sys/class/pwm/pwmchip0/D9/enable ")

Hope this could help ;-)