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Allow a bunch of Pi nodes to be visible but not active when used not on a Pi

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This commit is contained in:
Dave Conway-Jones
2018-04-15 11:24:56 +01:00
parent ace67b0154
commit acc2dc1a14
15 changed files with 428 additions and 355 deletions
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159
hardware/PiLiter/39-rpi-piliter.js
View File

@@ -6,20 +6,26 @@ module.exports = function(RED) {
var fs = require('fs');
var gpioCommand = __dirname+'/nrgpio.py';
var allOK = true;
if (!fs.existsSync("/dev/ttyAMA0")) { // unlikely if not on a Pi
//util.log("Info : Ignoring Raspberry Pi specific node.");
throw "Info : Ignoring Raspberry Pi specific node.";
try {
var cpuinfo = fs.readFileSync("/proc/cpuinfo").toString();
if (cpuinfo.indexOf(": BCM") === -1) {
RED.log.warn("rpi-liter : "+RED._("node-red:rpi-gpio.errors.ignorenode"));
allOK = false;
}
else if (!fs.existsSync("/usr/share/doc/python-rpi.gpio")) {
RED.log.warn("rpi-liter : "+RED._("node-red:rpi-gpio.errors.libnotfound"));
allOK = false;
}
else if (!(1 & parseInt ((fs.statSync(gpioCommand).mode & parseInt ("777", 8)).toString (8)[0]))) {
RED.log.warn("rpi-liter : "+RED._("node-red:rpi-gpio.errors.needtobeexecutable",{command:gpioCommand}));
allOK = false;
}
}
if (!fs.existsSync("/usr/share/doc/python-rpi.gpio")) {
util.log("[rpi-gpio] Info : Can't find Pi RPi.GPIO python library.");
throw "Warning : Can't find Pi RPi.GPIO python library.";
}
if ( !(1 & parseInt ((fs.statSync(gpioCommand).mode & parseInt ("777", 8)).toString (8)[0]) )) {
util.log("[rpi-gpio] Error : "+gpioCommand+" needs to be executable.");
throw "Error : " + gpioCommand + " must to be executable.";
catch(err) {
RED.log.warn("rpi-liter : "+RED._("node-red:rpi-gpio.errors.ignorenode"));
allOK = false;
}
function PiLiter(n) {
@@ -28,75 +34,80 @@ module.exports = function(RED) {
this.dir = (n.dir ? 1 : 0) || 0;
var node = this;
if (this.pinv === "bar") {
node.child = spawn(gpioCommand, ["byte",node.dir]);
node.on("input", function(msg) {
var out = Number(msg.payload);
if ((out >= 1) && (out <= 8)) { out = Math.pow(2, out) - 1; }
else { out = 0; }
if (node.child !== null) { node.child.stdin.write(out+"\n"); }
else { node.warn("Command not running"); }
});
}
else if (this.pinv === "meter") {
node.child = spawn(gpioCommand, ["byte",node.dir]);
node.on("input", function(msg) {
var out = Number(msg.payload);
if ((out >= 1) && (out <= 8)) { out = Math.pow(2, (out-1)); }
else { out = 0; }
if (node.child !== null) { node.child.stdin.write(out+"\n"); }
else { node.warn("Command not running"); }
});
}
else if (this.pinv === "all") {
node.child = spawn(gpioCommand, ["byte",node.dir]);
node.on("input", function(msg) {
var out = msg.payload;
if ((out === 1)|(out === true)|(out === "1")|(out === "on")) {
out = 255;
}
else { out = 0; }
if (node.child !== null) { node.child.stdin.write(out+"\n"); }
else { node.warn("Command not running"); }
});
}
else if (this.pinv === "pin") {
node.child = spawn(gpioCommand, ["byte",node.dir]);
var byte = 0;
node.on("input", function(msg) {
if (typeof msg.payload === "object") {
var out = Number(msg.payload.led);
var l = Number(msg.payload.state);
if ((out >= 1) && (out <= 8)) {
out = (Math.pow(2, (out-1)));
if (l === 0) { byte = (byte & (~out) & 255); }
else { byte = (byte | out) & 255; }
if (node.child !== null) { node.child.stdin.write(byte+"\n"); }
else { node.warn("Command not running"); }
if (allOK === true) {
if (this.pinv === "bar") {
node.child = spawn(gpioCommand, ["byte",node.dir]);
node.on("input", function(msg) {
var out = Number(msg.payload);
if ((out >= 1) && (out <= 8)) { out = Math.pow(2, out) - 1; }
else { out = 0; }
if (node.child !== null) { node.child.stdin.write(out+"\n"); }
else { node.warn("Command not running"); }
});
}
else if (this.pinv === "meter") {
node.child = spawn(gpioCommand, ["byte",node.dir]);
node.on("input", function(msg) {
var out = Number(msg.payload);
if ((out >= 1) && (out <= 8)) { out = Math.pow(2, (out-1)); }
else { out = 0; }
if (node.child !== null) { node.child.stdin.write(out+"\n"); }
else { node.warn("Command not running"); }
});
}
else if (this.pinv === "all") {
node.child = spawn(gpioCommand, ["byte",node.dir]);
node.on("input", function(msg) {
var out = msg.payload;
if ((out === 1)|(out === true)|(out === "1")|(out === "on")) {
out = 255;
}
else { out = 0; }
if (node.child !== null) { node.child.stdin.write(out+"\n"); }
else { node.warn("Command not running"); }
});
}
else if (this.pinv === "pin") {
node.child = spawn(gpioCommand, ["byte",node.dir]);
var byte = 0;
node.on("input", function(msg) {
if (typeof msg.payload === "object") {
var out = Number(msg.payload.led);
var l = Number(msg.payload.state);
if ((out >= 1) && (out <= 8)) {
out = (Math.pow(2, (out-1)));
if (l === 0) { byte = (byte & (~out) & 255); }
else { byte = (byte | out) & 255; }
if (node.child !== null) { node.child.stdin.write(byte+"\n"); }
else { node.warn("Command not running"); }
}
else { node.warn("Not a valid object - see Info panel."); }
}
else { node.warn("Not a valid object - see Info panel."); }
});
}
else {
node.child = spawn(gpioCommand, ["byte",node.dir]);
node.on("input", function(msg) {
var out = Number(msg.payload);
if ((out >= 0) && (out <= 255)) {
if (node.child !== null) { node.child.stdin.write(out+"\n"); }
else { node.warn("Command not running"); }
}
else { node.warn("Invalid input - not between 0 and 255"); }
});
}
node.on("close", function() {
if (node.child != null) {
node.child.kill('SIGKILL');
}
else { node.warn("Not a valid object - see Info panel."); }
if (RED.settings.verbose) { node.log("end"); }
});
}
else {
node.child = spawn(gpioCommand, ["byte",node.dir]);
node.on("input", function(msg) {
var out = Number(msg.payload);
if ((out >= 0) && (out <= 255)) {
if (node.child !== null) { node.child.stdin.write(out+"\n"); }
else { node.warn("Command not running"); }
}
else { node.warn("Invalid input - not between 0 and 255"); }
});
node.status({fill:"grey",shape:"dot",text:"node-red:rpi-gpio.status.not-available"});
}
node.on("close", function() {
if (node.child != null) {
node.child.kill('SIGKILL');
}
if (RED.settings.verbose) { node.log("end"); }
});
}
RED.nodes.registerType("rpi-liter",PiLiter);
}

2
hardware/PiLiter/package.json
View File

@@ -1,6 +1,6 @@
{
"name" : "node-red-node-piliter",
"version" : "0.0.11",
"version" : "0.0.12",
"description" : "A Node-RED node to drive a Raspberry Pi Pi-LITEr 8 LED board.",
"dependencies" : {
},