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Code Issues Releases Wiki Activity

Fix RPi node - gpio path as per @Croady suggestion

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This commit is contained in:
Dave C-J 2014-09-03 20:03:52 +01:00
parent fa8d31609e
commit a05c0f4bb2
2 changed files with 12 additions and 23 deletions
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4
nodes/core/hardware/36-rpi-gpio.html
View File

@ -1,5 +1,5 @@
<!--
Copyright 2013 IBM Corp.
Copyright 2013,2014 IBM Corp.
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
@ -40,7 +40,7 @@
&nbsp;<span id="pitype"></span>
</div>
<div class="form-row">
<label for="node-input-intype"><i class="fa fa-arrows-v"></i> Resistor?</label>
<label for="node-input-intype"><i class="fa fa-long-arrow-up"></i> Resistor?</label>
<select type="text" id="node-input-intype" style="width: 150px;">
<option value="tri">none</option>
<option value="up">pullup</option>

31
nodes/core/hardware/36-rpi-gpio.js
View File

@ -20,11 +20,13 @@ module.exports = function(RED) {
var exec = require('child_process').exec;
var fs = require('fs');
var gpioCommand = '/usr/local/bin/gpio';
if (!fs.existsSync("/dev/ttyAMA0")) { // unlikely if not on a Pi
throw "Info : Ignoring Raspberry Pi specific node.";
}
if (!fs.existsSync("/usr/local/bin/gpio")) { // gpio command not installed
if (!fs.existsSync(gpioCommand)) { // gpio command not installed
throw "Info : Can't find Raspberry Pi wiringPi gpio command.";
}
@ -100,11 +102,11 @@ module.exports = function(RED) {
var node = this;
if (node.pin !== undefined) {
exec("gpio mode "+node.pin+" "+node.intype, function(err,stdout,stderr) {
exec(gpioCommand+" mode "+node.pin+" "+node.intype, function(err,stdout,stderr) {
if (err) { node.error(err); }
else {
node._interval = setInterval( function() {
exec("gpio read "+node.pin, function(err,stdout,stderr) {
exec(gpioCommand+" read "+node.pin, function(err,stdout,stderr) {
if (err) { node.error(err); }
else {
if (node.buttonState !== Number(stdout)) {
@ -137,7 +139,7 @@ module.exports = function(RED) {
if (node.pin !== undefined) {
process.nextTick(function() {
exec("gpio mode "+node.pin+" out", function(err,stdout,stderr) {
exec(gpioCommand+" mode "+node.pin+" out", function(err,stdout,stderr) {
if (err) { node.error(err); }
else {
node.on("input", function(msg) {
@ -145,7 +147,7 @@ module.exports = function(RED) {
if (msg.payload === "false") { msg.payload = false; }
var out = Number(msg.payload);
if ((out === 0)|(out === 1)) {
exec("gpio write "+node.pin+" "+out, function(err,stdout,stderr) {
exec(gpioCommand+" write "+node.pin+" "+out, function(err,stdout,stderr) {
if (err) { node.error(err); }
});
}
@ -160,27 +162,14 @@ module.exports = function(RED) {
}
node.on("close", function() {
exec("gpio mode "+node.pin+" in");
exec(gpioCommand+" mode "+node.pin+" in");
});
}
//exec("gpio mode 0 in",function(err,stdout,stderr) {
// if (err) {
// util.log('[36-rpi-gpio.js] Error: "gpio" command failed for some reason.');
// }
// exec("gpio mode 1 in");
// exec("gpio mode 2 in");
// exec("gpio mode 3 in");
// exec("gpio mode 4 in");
// exec("gpio mode 5 in");
// exec("gpio mode 6 in");
// exec("gpio mode 7 in");
//});
var pitype = { type:"" };
exec("gpio -v | grep Type", function(err,stdout,stderr) {
exec(gpioCommand+" -v | grep Type", function(err,stdout,stderr) {
if (err) {
util.log('[36-rpi-gpio.js] Error: "gpio -v" command failed for some reason.');
util.log('[36-rpi-gpio.js] Error: "'+gpioCommand+' -v" command failed for some reason.');
}
else {
pitype = { type:(stdout.split(","))[0].split(": ")[1], rev:(stdout.split(","))[1].split(": ")[1] };