Hello together,
I got the Problem fixed.
Here are the modified code:
pimcp3008.html
<!DOCTYPE html>
<script type="text/x-red" data-template-name="pimcp3008">
<div class="form-row">
<label for="node-input-dev"><i class="fa fa-server"></i> Device</label>
<select type="text" id="node-input-dev" style="width:150px;">
<option value="3008">mcp3008</option>
<option value="3002">mcp3002</option>
<option value="3004">mcp3004</option>
<option value="3202">mcp3202</option>
<option value="3204">mcp3204</option>
<option value="3208">mcp3208</option>
<option value="3304">mcp3304</option>
</select>
</div>
<div class="form-row">
<label for="node-input-pin"><i class="fa fa-map-pin"></i> Input pin</label>
<select type="text" id="node-input-pin" style="width:150px;">
<option value=0>A0</option>
<option value=1>A1</option>
<option value=2>A2</option>
<option value=3>A3</option>
<option value=4>A4</option>
<option value=5>A5</option>
<option value=6>A6</option>
<option value=7>A7</option>
<option value="M">set by msg.payload</option>
</select>
</div>
<div class="form-row">
<label for="node-input-dnum"><i class="fa fa-toggle-on"></i> Device ID</label>
<select type="text" id="node-input-dnum" style="width:150px;">
<option value=0>CE0</option>
<option value=1>CE1</option>
<option value=2>CE2</option>
</select>
</div>
<div class="form-row">
<label for="node-input-bus"><i class="fa fa-toggle-on"></i> SPI bus</label>
<select type="text" id="node-input-bus" style="width:150px;">
<option value=0>0</option>
<option value=1>1</option>
</select>
</div>
<div class="form-row">
<label for="node-input-name"><i class="fa fa-tag"></i> Name</label>
<input type="text" id="node-input-name" placeholder="Name"/>
</div>
</script>
<script type="text/x-red" data-help-name="pimcp3008">
<p>Reads from an MCP3xxx Series Analogue to Digital Converter (ADC) chip on the Pi SPI CE0 or CE1 connection,
such as the rasp.io/analogzero.</p>
<p>You can either set a channel in the edit dialogue, or you can set the <code>msg.payload</code>
to select the channel dynamically. If so then the expected payload must be a value from 0 to 7.</p>
<p>Outputs a numeric <code>msg.payload</code> with a range of 0 to 1023, representing 0V to 3.3V.</p>
<p><i>Hint</i>: use a <code>range</code> node to re-scale the values to ones you want.</p>
<p>Also sets <code>msg.topic</code> to <i>adc/{the pin number}</i></p>
<p><b>Warning</b>: Input voltages must not exceed 3.3V</p>
<p>The SPI bus must be enabled for this node to work. This can be achieved by using the
advanced menu (option 9 A5) of the <b>raspi-config</b> utility.</p>
</script>
<script type="text/javascript">
RED.nodes.registerType('pimcp3008',{
category: 'Raspberry Pi',
paletteLabel: 'A/D converter',
color: "#c6dbef",
defaults: {
name: {value:""},
dev: {value:"3008"},
pin: {value:0, required:true},
dnum: {value:0},
bus: {value:0}
},
inputs: 1,
outputs: 1,
icon: "rpi.png",
label: function() {
return this.name || "mcp:"+this.dev+" "+" bus:"+this.bus+" CS:"+this.dnum+" pin:"+((this.pin==="M")?"":this.pin);
},
labelStyle: function() {
return this.name?"node_label_italic":"";
}
});
</script>
pimcp3008.js
module.exports = function(RED) {
"use strict";
var fs2 = require('fs');
var allOK = false;
var mcpadc;
// unlikely if not on a Pi
try {
var cpuinfo = fs2.readFileSync("/proc/cpuinfo").toString();
if (cpuinfo.indexOf(": BCM") === -1) {
RED.log.warn("Info : mcp3xxx : Not running on a Pi - Ignoring node");
}
else {
mcpadc = require('mcp-spi-adc');
allOK = true;
}
}
catch(err) {
RED.log.warn("Info : mcp3xxx : Not running on a Pi - Ignoring node");
}
//var mcp3xxx = [];
function PiMcpNode(n) {
RED.nodes.createNode(this,n);
this.pin = n.pin || 0;
this.interval = n.interval || 1000;
this.dnum = parseInt(n.dnum || 0);
this.bus = parseInt(n.bus || 0);
this.dev = n.dev || "3008";
this.fs = require('fs');
this.mcp3xxx = [];
var node = this;
this.cb = function (err) { if (err) { node.error("Error: "+err); } };
this.opt = { speedHz:20000, deviceNumber:node.dnum, busNumber:node.bus };
var chans = parseInt(this.dev.substr(3));
var node = this;
if (allOK === true) {
try {
node.fs.statSync("/dev/spidev"+node.bus+"."+node.dnum);
if (node.mcp3xxx.length === 0) {
for (var i=0; i<chans; i++) {
if (node.dev === "3002") { node.mcp3xxx.push(mcpadc.openMcp3002(i, node.opt, node.cb)); }
if (node.dev === "3004") { node.mcp3xxx.push(mcpadc.openMcp3004(i, node.opt, node.cb)); }
if (node.dev === "3008") { node.mcp3xxx.push(mcpadc.openMcp3008(i, node.opt, node.cb)); }
if (node.dev === "3202") { node.mcp3xxx.push(mcpadc.openMcp3202(i, node.opt, node.cb)); }
if (node.dev === "3204") { node.mcp3xxx.push(mcpadc.openMcp3204(i, node.opt, node.cb)); }
if (node.dev === "3208") { node.mcp3xxx.push(mcpadc.openMcp3208(i, node.opt, node.cb)); }
if (node.dev === "3304") { node.mcp3xxx.push(mcpadc.openMcp3304(i, node.opt, node.cb)); }
}
}
node.on("input", function(msg) {
var pin = null;
if (node.pin === "M") {
var pay = parseInt(msg.payload.toString());
if ((pay >= 0) && (pay < chans)) { pin = pay; }
else { node.warn("Payload needs to select channel 0 to "+(chans-1)); }
}
else { pin = parseInt(node.pin); }
if (pin !== null) {
node.mcp3xxx[pin].read(function (err, reading) {
if (err) { node.warn("Read error: "+err); }
else { node.send({payload:reading.rawValue, topic:"adc/"+pin}); }
});
}
});
}
catch(err) {
node.error("Error : Can't find SPI device - is SPI enabled in raspi-config ?"+ err);
}
node.on("close", function(done) {
if (node.mcp3xxx.length !== 0) {
var j=0;
for (var i=0; i<chans; i++) {
node.mcp3xxx[i].close(function() { j += 1; if (j === chans) {done()} });
}
mcp3xxx = [];
}
else { done(); }
});
}
else {
node.status({text:"node inactive."})
}
}
RED.nodes.registerType("pimcp3008",PiMcpNode);
}
Now all devises are showing up:
pi@testberrypi2:~/.node-red/node_modules/mcp-spi-adc $ lsof /dev/spidev*
COMMAND PID USER FD TYPE DEVICE SIZE/OFF NODE NAME
node-red 1886 pi 20u CHR 153,2 0t0 387 /dev/spidev1.0
node-red 1886 pi 21u CHR 153,2 0t0 387 /dev/spidev1.0
node-red 1886 pi 22u CHR 153,2 0t0 387 /dev/spidev1.0
node-red 1886 pi 23u CHR 153,2 0t0 387 /dev/spidev1.0
node-red 1886 pi 24u CHR 153,2 0t0 387 /dev/spidev1.0
node-red 1886 pi 25u CHR 153,2 0t0 387 /dev/spidev1.0
node-red 1886 pi 28u CHR 153,2 0t0 387 /dev/spidev1.0
node-red 1886 pi 29u CHR 153,2 0t0 387 /dev/spidev1.0
node-red 1886 pi 30u CHR 153,0 0t0 385 /dev/spidev1.2
node-red 1886 pi 31u CHR 153,0 0t0 385 /dev/spidev1.2
node-red 1886 pi 32u CHR 153,0 0t0 385 /dev/spidev1.2
node-red 1886 pi 33u CHR 153,0 0t0 385 /dev/spidev1.2
node-red 1886 pi 34u CHR 153,0 0t0 385 /dev/spidev1.2
node-red 1886 pi 35u CHR 153,0 0t0 385 /dev/spidev1.2
node-red 1886 pi 36u CHR 153,0 0t0 385 /dev/spidev1.2
node-red 1886 pi 37u CHR 153,0 0t0 385 /dev/spidev1.2
node-red 1886 pi 38u CHR 153,1 0t0 386 /dev/spidev1.1
node-red 1886 pi 39u CHR 153,1 0t0 386 /dev/spidev1.1
node-red 1886 pi 40u CHR 153,1 0t0 386 /dev/spidev1.1
node-red 1886 pi 41u CHR 153,1 0t0 386 /dev/spidev1.1
node-red 1886 pi 42u CHR 153,1 0t0 386 /dev/spidev1.1
node-red 1886 pi 43u CHR 153,1 0t0 386 /dev/spidev1.1
node-red 1886 pi 44u CHR 153,1 0t0 386 /dev/spidev1.1
node-red 1886 pi 45u CHR 153,1 0t0 386 /dev/spidev1.1
pi@testberrypi2:~/.node-red/node_modules/mcp-spi-adc $
