From bf178b81eea94fe163339829209ff9d23ad3201c Mon Sep 17 00:00:00 2001 From: Dave C-J Date: Fri, 4 Oct 2013 08:22:35 +0100 Subject: [PATCH] Added PiFace Node and PiBorg LED Nodes for Raspberry Pi people --- hardware/37-rpi-piface.html | 130 ++++++++++++++++++++++++++++++++++ hardware/37-rpi-piface.js | 134 ++++++++++++++++++++++++++++++++++++ hardware/78-ledborg.html | 50 ++++++++++++++ hardware/78-ledborg.js | 53 ++++++++++++++ 4 files changed, 367 insertions(+) create mode 100644 hardware/37-rpi-piface.html create mode 100644 hardware/37-rpi-piface.js create mode 100644 hardware/78-ledborg.html create mode 100644 hardware/78-ledborg.js diff --git a/hardware/37-rpi-piface.html b/hardware/37-rpi-piface.html new file mode 100644 index 00000000..3e3ac043 --- /dev/null +++ b/hardware/37-rpi-piface.html @@ -0,0 +1,130 @@ + + + + + + + + + + + + + + diff --git a/hardware/37-rpi-piface.js b/hardware/37-rpi-piface.js new file mode 100644 index 00000000..0d692efd --- /dev/null +++ b/hardware/37-rpi-piface.js @@ -0,0 +1,134 @@ +/** + * Copyright 2013 IBM Corp. + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + **/ + +var RED = require("../../red/red"); +var util = require("util"); +var exec = require('child_process').exec; +var fs = require('fs'); + +if (!fs.existsSync("/usr/local/bin/gpio")) { + exec("cat /proc/cpuinfo | grep BCM27",function(err,stdout,stderr) { + if (stdout.indexOf('BCM27') > -1) { + util.log('[37-rpi-piface.js] Error: Cannot find Wiring-Pi "gpio" command'); + } + // else not on a Pi so don't worry anyone with needless messages. + }); + return; +} + +// Map names of pins to Gordon's gpio PiFace pin numbers +var pintable = { +// Physical : WiringPi + "Button S1":"200", + "Button S2":"201", + "Button S3":"202", + "Button S4":"203", + "Input 5":"204", + "Input 6":"205", + "Input 7":"206", + "Input 8":"207", + "Output0":"208", + "Output1":"209", + "Output2":"210", + "Output3":"211", + "Output4":"212", + "Output5":"213", + "Output6":"214", + "Output7":"215", + "LED 0 / Relay 0":"200", + "LED 1 / Relay 1":"201", + "LED 2":"202", + "LED 3":"203", + "LED 4":"204", + "LED 5":"205", + "LED 6":"206", + "LED 7":"207" +} + +function PiFACEInNode(n) { + RED.nodes.createNode(this,n); + this.buttonState = -1; + this.pin = pintable[n.pin]; + this.intype = n.intype; + var node = this; + if (node.pin) { + exec("gpio -p mode "+node.pin+" "+node.intype, function(err,stdout,stderr) { + if (err) node.error(err); + else { + node._interval = setInterval( function() { + exec("gpio -p read "+node.pin, function(err,stdout,stderr) { + if (err) node.error(err); + else { + if (node.buttonState !== Number(stdout)) { + var previousState = node.buttonState; + node.buttonState = Number(stdout); + if (previousState !== -1) { + var msg = {topic:"pi/"+node.pin, payload:node.buttonState}; + node.send(msg); + } + } + } + }); + }, 250); + } + }); + } + else { + node.error("Invalid PiFACE pin: "+node.pin); + } +} + +function PiFACEOutNode(n) { + RED.nodes.createNode(this,n); + this.pin = pintable[n.pin]; + var node = this; + if (node.pin) { + node.on("input", function(msg) { + if (msg.payload === "true") msg.payload = true; + if (msg.payload === "false") msg.payload = false; + var out = Number(msg.payload); + if ((out == 0)|(out == 1)) { + exec("gpio -p write "+node.pin+" "+out, function(err,stdout,stderr) { + if (err) node.error(err); + }); + } + else node.warn("Invalid input - not 0 or 1"); + }); + } + else { + node.error("Invalid PiFACE pin: "+node.pin); + } +} + + + +exec("gpio load spi",function(err,stdout,stderr) { + if (err) { + util.log('[37-rpi-piface.js] Error: "gpio load spi" command failed for some reason.'); + } + exec("gpio -p reset",function(err,stdout,stderr) { + if (err) { + util.log('[37-rpi-piface.js] Error: "gpio -p reset" command failed for some reason.'); + } + RED.nodes.registerType("rpi-piface in",PiFACEInNode); + RED.nodes.registerType("rpi-piface out",PiFACEOutNode); + PiFACEInNode.prototype.close = function() { + clearInterval(this._interval); + } + PiFACEOutNode.prototype.close = function() { + } + }); +}); diff --git a/hardware/78-ledborg.html b/hardware/78-ledborg.html new file mode 100644 index 00000000..e97da1b0 --- /dev/null +++ b/hardware/78-ledborg.html @@ -0,0 +1,50 @@ + + + + + + + diff --git a/hardware/78-ledborg.js b/hardware/78-ledborg.js new file mode 100644 index 00000000..80f6e316 --- /dev/null +++ b/hardware/78-ledborg.js @@ -0,0 +1,53 @@ +/** + * Copyright 2013 IBM Corp. + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + **/ + +var RED = require("../../red/red"); +var util = require('util'); +var fs = require('fs'); + +// check if /dev/ledborg exists - if not then don't even show the node. +if (!fs.existsSync("/dev/ledborg")) { + util.log("[78-ledborg.js] Error: PiBorg hardware : LedBorg not found"); + return; +} + +function LedBorgNode(n) { + RED.nodes.createNode(this,n); + var p1 = /[0-2][0-2][0-2]/ + var p2 = /^\#[A-Fa-f0-9]{6}$/ + var node = this; + + this.on("input", function(msg) { + if (p1.test(msg.payload)) { + fs.writeFile('/dev/ledborg', msg.payload, function (err) { + if (err) node.warn(msg.payload+" : No LedBorg found"); + }); + } + if (p2.test(msg.payload)) { + var r = Math.floor(parseInt(msg.payload.slice(1,3),16)/88).toString(); + var g = Math.floor(parseInt(msg.payload.slice(3,5),16)/88).toString(); + var b = Math.floor(parseInt(msg.payload.slice(5),16)/88).toString(); + fs.writeFile('/dev/ledborg', r+g+b, function (err) { + if (err) node.warn(r+g+b+" : No LedBorg found"); + }); + } + else { + node.warn("Invalid LedBorg colour code"); + } + }); +} + +RED.nodes.registerType("ledborg",LedBorgNode);