Let serialport wiatfor a char before starting output
This commit is contained in:
Dave Conway-Jones
parent
60af3ffa28
commit
0b11d68c02
|
|
@ -99,7 +99,7 @@
|
|||
with which it shares the configuration.</p>
|
||||
<p>Send the request message in <code>msg.payload</code> as you would do with a <code>serial out</code> node.
|
||||
The message will be forwarded to the serial port following a strict FIFO (First In, First Out) queue, waiting for a single response before transmitting the next request.
|
||||
Once a response is received (with the same logic of a <code>serial in</code> node), or after a timeout occurs, a message is produced to the output (see Outputs below),
|
||||
Once a response is received (with the same logic of a <code>serial in</code> node), or after a timeout occurs, a message is sent to the output (see Outputs below),
|
||||
with <code>msg.payload</code> containing the received response (or missing in case if timeout) and all other fields preserved.</p>
|
||||
<p>For consistency with the <code>serial in</code> node, <code>msg.port</code> is set to the name of the port selected.</p>
|
||||
<h3>Inputs</h3>
|
||||
|
|
@ -108,7 +108,8 @@
|
|||
<code>msg.timeout</code> is the timeout (in ms) after which the incoming message is propagated to the output with <code>msg.status</code> set to <code>"ERR_TIMEOUT"</code> and missing payload.
|
||||
If not present, the default value is 10000 (10s).
|
||||
</li>
|
||||
<li>Any other field will be propagated to the output so to allow to match responses with requests.</li>
|
||||
<li><code>msg.count</code> if set this will override the configured number of characters as long as it is less than the number configured.</li>
|
||||
<li><code>msg.waitfor</code> single character, escape code, or hex code. If set, the node will wait until it matches that character in the stream and then start the output.</li>
|
||||
</ul>
|
||||
<h3>Outputs</h3>
|
||||
<ul>
|
||||
|
|
@ -178,59 +179,66 @@
|
|||
</select>
|
||||
</td></tr></table>
|
||||
</div>
|
||||
<br/>
|
||||
<div class="form-row">
|
||||
<div class="form-row" style="margin-top:16px; margin-bottom:0;">
|
||||
<label><i class="fa fa-sign-in"></i> <span data-i18n="serial.label.input"></span></label>
|
||||
</div>
|
||||
<div class="form-row" style="padding-left:10px;">
|
||||
<div class="form-row" style="padding-left:18px; margin-bottom:4px;">
|
||||
<span data-i18n="serial.label.start"></span>
|
||||
<input type="text" id="node-config-input-waitfor" style="width:50px; height:28px;">
|
||||
<span data-i18n="serial.label.startor"></span>
|
||||
</div>
|
||||
<div class="form-row" style="padding-left:18px; margin-bottom:4px;">
|
||||
<span data-i18n="serial.label.split"></span>
|
||||
<select type="text" id="node-config-input-out" style="margin-left:5px; width:200px;">
|
||||
<select type="text" id="node-config-input-out" style="margin-left:11px; width:200px; height:28px;">
|
||||
<option value="char" data-i18n="serial.split.character"></option>
|
||||
<option value="time" data-i18n="serial.split.timeout"></option>
|
||||
<option value="interbyte" data-i18n="serial.split.silent"></option>
|
||||
<option value="count" data-i18n="serial.split.lengths"></option>
|
||||
</select>
|
||||
<input type="text" id="node-config-input-newline" style="width:50px;">
|
||||
<input type="text" id="node-config-input-newline" style="width:50px; height:28px;">
|
||||
<span id="node-units"></span>
|
||||
</div>
|
||||
<div class="form-row" style="padding-left:10px;">
|
||||
<div class="form-row" style="padding-left:18px; margin-bottom:4px;">
|
||||
<span data-i18n="serial.label.deliver"></span>
|
||||
<select type="text" id="node-config-input-bin" style="margin-left:5px; width:150px;">
|
||||
<select type="text" id="node-config-input-bin" style="margin-left:5px; width:150px; height:28px;">
|
||||
<option value="false" data-i18n="serial.output.ascii"></option>
|
||||
<option value="bin" data-i18n="serial.output.binary"></option>
|
||||
</select>
|
||||
</div>
|
||||
<br/>
|
||||
<div id="node-config-addchar">
|
||||
<div class="form-row">
|
||||
<div class="form-row" style="margin-top:16px; margin-bottom:0;">
|
||||
<label><i class="fa fa-sign-out"></i> <span data-i18n="serial.label.output"></span></label>
|
||||
</div>
|
||||
<div class="form-row">
|
||||
<input style="width:30px; margin-left:10px; vertical-align:top;" type="checkbox" id="node-config-input-addchar"><label style="width:auto;" for="node-config-input-addchar"><span data-i18n="serial.addsplit"></span></label>
|
||||
<div class="form-row" style="padding-left:18px; margin-bottom:4px;">
|
||||
<label style="width:auto;" for="node-config-input-addchar"><span data-i18n="serial.addsplit"></span></label>
|
||||
<input type="text" id="node-config-input-addchar" style="width:50px; height:28px;">
|
||||
</div>
|
||||
</div>
|
||||
<br/>
|
||||
<div id="node-config-addchar">
|
||||
<div class="form-row">
|
||||
<div id="node-config-req">
|
||||
<div class="form-row" style="margin-top:16px; margin-bottom:0;">
|
||||
<label><i class="fa fa-exchange"></i> <span data-i18n="serial.label.request"></span></label>
|
||||
</div>
|
||||
<div class="form-row" style="padding-left:10px;">
|
||||
<div class="form-row" style="padding-left:18px; margin-bottom:18px;">
|
||||
<span data-i18n="serial.label.responsetimeout"></span>
|
||||
<input type="text" id="node-config-input-responsetimeout" style="width:60px;">
|
||||
<input type="text" id="node-config-input-responsetimeout" style="width:60px; height:28px;">
|
||||
<span data-i18n="serial.label.ms"></span>
|
||||
</div>
|
||||
</div>
|
||||
<div class="form-tips" id="tip-waitfor" hidden><span data-i18n="serial.tip.waitfor"></span></div>
|
||||
<div class="form-tips" id="tip-addchar" hidden><span data-i18n="serial.tip.addchar"></span></div>
|
||||
<div class="form-tips" id="tip-responsetimeout" hidden><span data-i18n="serial.tip.responsetimeout"></span></div>
|
||||
<div class="form-tips" id="tip-split"><span data-i18n="serial.tip.split"></span></div>
|
||||
<div class="form-tips" id="tip-timeout" hidden><span data-i18n="serial.tip.timeout"></span></div>
|
||||
<div class="form-tips" id="tip-silent" hidden><span data-i18n="serial.tip.silent"></span></div>
|
||||
<div class="form-tips" id="tip-count" hidden><span data-i18n="serial.tip.count"></span></div>
|
||||
</script>
|
||||
|
||||
<script type="text/x-red" data-help-name="serial-port">
|
||||
<p>Provides configuration options for a serial port.</p>
|
||||
<p>The search button should return a list of available serial ports to choose from, or you
|
||||
can type in the location if known.</p>
|
||||
<p>The input can be split on a fixed character, after a timeout, or after a fixed number of characters.</p>
|
||||
<p>The node can optionally wait until it matches a pre-defined character.
|
||||
The data can then be split on a fixed character, after a timeout, or after a fixed number of characters.</p>
|
||||
<p>If using a character, it can be specified as either the character, the escaped shortcut (e.g. \n), or the hex code (e.g. 0x0d).</p>
|
||||
</script>
|
||||
|
||||
|
|
@ -244,6 +252,7 @@
|
|||
databits: {value:8,required:true},
|
||||
parity: {value:"none",required:true},
|
||||
stopbits: {value:1,required:true},
|
||||
waitfor: {value:""},
|
||||
newline: {value:"\\n"},
|
||||
bin: {value:"false"},
|
||||
out: {value:"char"},
|
||||
|
|
@ -290,41 +299,50 @@
|
|||
if ($("#node-config-input-out").val() == "char") {
|
||||
if (previous != "char") { $("#node-config-input-newline").val("\\n"); }
|
||||
$("#node-units").text("");
|
||||
$("#node-config-addchar").show();
|
||||
// $("#node-config-addchar").show();
|
||||
$("#tip-split").show();
|
||||
$("#tip-timeout").hide();
|
||||
$("#tip-silent").hide();
|
||||
$("#tip-count").hide();
|
||||
}
|
||||
else if ($("#node-config-input-out").val() == "time") {
|
||||
if (previous != "time") { $("#node-config-input-newline").val("0"); }
|
||||
$("#node-units").text("ms");
|
||||
$("#node-config-addchar").hide();
|
||||
$("#node-config-input-addchar").val("false");
|
||||
// $("#node-config-addchar").hide();
|
||||
// $("#node-config-input-addchar").val("false");
|
||||
$("#tip-split").hide();
|
||||
$("#tip-timeout").show();
|
||||
$("#tip-silent").hide();
|
||||
$("#tip-count").hide();
|
||||
}
|
||||
else if ($("#node-config-input-out").val() == "interbyte") {
|
||||
if (previous != "interbyte") { $("#node-config-input-newline").val("0"); }
|
||||
$("#node-units").text("ms");
|
||||
$("#node-config-addchar").hide();
|
||||
$("#node-config-input-addchar").val("false");
|
||||
// $("#node-config-addchar").hide();
|
||||
// $("#node-config-input-addchar").val("false");
|
||||
$("#tip-split").hide();
|
||||
$("#tip-timeout").hide();
|
||||
$("#tip-silent").show();
|
||||
$("#tip-count").hide();
|
||||
}
|
||||
else {
|
||||
if (previous != "count") { $("#node-config-input-newline").val(""); }
|
||||
$("#node-units").text("chars");
|
||||
$("#node-config-addchar").hide();
|
||||
$("#node-config-input-addchar").val("false");
|
||||
// $("#node-config-addchar").hide();
|
||||
// $("#node-config-input-addchar").val("false");
|
||||
$("#tip-split").hide();
|
||||
$("#tip-timeout").hide();
|
||||
$("#tip-silent").hide();
|
||||
$("#tip-count").show();
|
||||
}
|
||||
});
|
||||
|
||||
$("#node-config-input-responsetimeout").on('focus', function () { $("#tip-responsetimeout").show(); });
|
||||
$("#node-config-input-responsetimeout").on('blur', function () { $("#tip-responsetimeout").hide(); });
|
||||
$("#node-config-input-waitfor").on('focus', function () { $("#tip-waitfor").show(); });
|
||||
$("#node-config-input-waitfor").on('blur', function () { $("#tip-waitfor").hide(); });
|
||||
$("#node-config-input-addchar").on('focus', function () { $("#tip-addchar").show(); });
|
||||
$("#node-config-input-addchar").on('blur', function () { $("#tip-addchar").hide(); });
|
||||
|
||||
try {
|
||||
$("#node-config-input-serialport").autocomplete( "destroy" );
|
||||
|
|
|
|||
|
|
@ -13,13 +13,14 @@ module.exports = function(RED) {
|
|||
RED.nodes.createNode(this,n);
|
||||
this.serialport = n.serialport;
|
||||
this.newline = n.newline; /* overloaded: split character, timeout, or character count */
|
||||
this.addchar = n.addchar || "false";
|
||||
this.addchar = n.addchar || "";
|
||||
this.serialbaud = parseInt(n.serialbaud) || 57600;
|
||||
this.databits = parseInt(n.databits) || 8;
|
||||
this.parity = n.parity || "none";
|
||||
this.stopbits = parseInt(n.stopbits) || 1;
|
||||
this.bin = n.bin || "false";
|
||||
this.out = n.out || "char";
|
||||
this.waitfor = n.waitfor || "";
|
||||
this.responsetimeout = n.responsetimeout || 10000;
|
||||
}
|
||||
RED.nodes.registerType("serial-port",SerialPortNode);
|
||||
|
|
@ -117,6 +118,10 @@ module.exports = function(RED) {
|
|||
// Serial Out
|
||||
node.on("input",function(msg) {
|
||||
if (!msg.hasOwnProperty("payload")) { return; } // do nothing unless we have a payload
|
||||
if (msg.hasOwnProperty("count") && (typeof msg.count === "number") && (node.serialConfig.out === "count")) {
|
||||
node.serialConfig.newline = msg.count;
|
||||
}
|
||||
if (msg.hasOwnProperty("flush") && msg.flush === true) { node.port.serial.flush(); }
|
||||
node.status({fill:"yellow",shape:"dot",text:"serial.status.waiting"});
|
||||
node.port.enqueue(msg,node,function(err,res) {
|
||||
if (err) {
|
||||
|
|
@ -176,6 +181,7 @@ module.exports = function(RED) {
|
|||
stopbits = serialConfig.stopbits,
|
||||
newline = serialConfig.newline,
|
||||
spliton = serialConfig.out,
|
||||
waitfor = serialConfig.waitfor,
|
||||
binoutput = serialConfig.bin,
|
||||
addchar = serialConfig.addchar,
|
||||
responsetimeout = serialConfig.responsetimeout;
|
||||
|
|
@ -191,17 +197,25 @@ module.exports = function(RED) {
|
|||
// "time" : a msg will be sent after .newline milliseconds
|
||||
// "count" : a msg will be sent after .newline characters
|
||||
// if we use "count", we already know how big the buffer will be
|
||||
var bufSize = spliton == "count" ? Number(newline): bufMaxSize;
|
||||
var buf = new Buffer(bufSize);
|
||||
var bufSize = (spliton === "count") ? Number(newline): bufMaxSize;
|
||||
|
||||
waitfor = waitfor.replace("\\n","\n").replace("\\r","\r").replace("\\t","\t").replace("\\e","\e").replace("\\f","\f").replace("\\0","\0"); // jshint ignore:line
|
||||
if (waitfor.substr(0,2) == "0x") { waitfor = parseInt(waitfor,16); }
|
||||
if (waitfor.length === 1) { waitfor = waitfor.charCodeAt(0); }
|
||||
console.log("WF2",waitfor);
|
||||
var active = (waitfor === "") ? true : false;
|
||||
var buf = new Buffer.alloc(bufSize);
|
||||
|
||||
var splitc; // split character
|
||||
// Parse the split character onto a 1-char buffer we can immediately compare against
|
||||
if (newline.substr(0,2) == "0x") {
|
||||
splitc = new Buffer([parseInt(newline)]);
|
||||
splitc = new Buffer.alloc([parseInt(newline,16)]);
|
||||
}
|
||||
else {
|
||||
splitc = new Buffer(newline.replace("\\n","\n").replace("\\r","\r").replace("\\t","\t").replace("\\e","\e").replace("\\f","\f").replace("\\0","\0")); // jshint ignore:line
|
||||
splitc = new Buffer.from(newline.replace("\\n","\n").replace("\\r","\r").replace("\\t","\t").replace("\\e","\e").replace("\\f","\f").replace("\\0","\0")); // jshint ignore:line
|
||||
}
|
||||
if (addchar === true) { addchar = splitc; }
|
||||
console.log("AC:",addchar,":");
|
||||
|
||||
connections[id] = (function() {
|
||||
var obj = {
|
||||
|
|
@ -220,10 +234,10 @@ module.exports = function(RED) {
|
|||
else {
|
||||
payload = payload.toString();
|
||||
}
|
||||
if ((spliton === "char") && (addchar === true)) { payload += splitc; }
|
||||
if ((spliton === "char") && (addchar !== "")) { payload += addchar; }
|
||||
}
|
||||
else if ((spliton === "char") && (addchar === true) && (splitc !== "")) {
|
||||
payload = Buffer.concat([payload,splitc]);
|
||||
else if ((spliton === "char") && (addchar !== "")) {
|
||||
payload = Buffer.concat([payload,addchar]);
|
||||
}
|
||||
return payload;
|
||||
},
|
||||
|
|
@ -287,6 +301,7 @@ module.exports = function(RED) {
|
|||
//newline = newline.replace("\\n","\n").replace("\\r","\r");
|
||||
var olderr = "";
|
||||
var setupSerial = function() {
|
||||
|
||||
obj.serial = new serialp(port,{
|
||||
baudRate: baud,
|
||||
dataBits: databits,
|
||||
|
|
@ -331,23 +346,26 @@ module.exports = function(RED) {
|
|||
|
||||
obj.serial.on('data',function(d) {
|
||||
function emitData(data) {
|
||||
var m = Buffer.from(data);
|
||||
var last_sender = null;
|
||||
if (obj.queue.length) { last_sender = obj.queue[0].sender; }
|
||||
if (binoutput !== "bin") { m = m.toString(); }
|
||||
var msgout = obj.dequeue() || {};
|
||||
msgout.payload = m;
|
||||
msgout.port = port;
|
||||
obj._emitter.emit('data',
|
||||
msgout,
|
||||
last_sender);
|
||||
if (active === true) {
|
||||
var m = Buffer.from(data);
|
||||
var last_sender = null;
|
||||
if (obj.queue.length) { last_sender = obj.queue[0].sender; }
|
||||
if (binoutput !== "bin") { m = m.toString(); }
|
||||
var msgout = obj.dequeue() || {};
|
||||
msgout.payload = m;
|
||||
msgout.port = port;
|
||||
obj._emitter.emit('data', msgout, last_sender);
|
||||
}
|
||||
active = (waitfor === "") ? true : false;
|
||||
}
|
||||
|
||||
for (var z=0; z<d.length; z++) {
|
||||
var c = d[z];
|
||||
if (c === waitfor) { active = true; }
|
||||
// handle the trivial case first -- single char buffer
|
||||
if (!active) { return; }
|
||||
if ((newline === 0)||(newline === "")) {
|
||||
emitData(new Buffer([c]));
|
||||
emitData(new Buffer.from([c]));
|
||||
continue;
|
||||
}
|
||||
|
||||
|
|
@ -376,6 +394,7 @@ module.exports = function(RED) {
|
|||
}
|
||||
// count bytes into a buffer...
|
||||
else if (spliton === "count") {
|
||||
newline = serialConfig.newline;
|
||||
if ( i >= parseInt(newline)) {
|
||||
emitData(buf.slice(0,i));
|
||||
i=0;
|
||||
|
|
|
|||
|
|
@ -19,7 +19,9 @@
|
|||
"responsetimeout": "Default response timeout",
|
||||
"ms": "ms",
|
||||
"serial": "serial",
|
||||
"none": "none"
|
||||
"none": "none",
|
||||
"start": "Optionally wait for a start character of",
|
||||
"startor": ", then"
|
||||
},
|
||||
"placeholder": {
|
||||
"serialport": "for example: /dev/ttyUSB0/"
|
||||
|
|
@ -41,12 +43,15 @@
|
|||
"ascii": "ascii strings",
|
||||
"binary": "binary buffers"
|
||||
},
|
||||
"addsplit": "add split character to output messages",
|
||||
"addsplit": "Add character to output messages",
|
||||
"tip": {
|
||||
"responsetimeout": "Tip: The default response timeout can be overridden by setting msg.timeout.",
|
||||
"split": "Tip: the \"Split on\" character is used to split the input into separate messages. It can also be added to every message sent out to the serial port.",
|
||||
"split": "Tip: the \"Split on\" character is used to split the input into separate messages. Can accept chars ($), escape codes (\\n), or hex codes (0x03).",
|
||||
"silent": "Tip: In line-silent mode timeout is restarted upon arrival of any character (i.e. inter-byte timeout).",
|
||||
"timeout": "Tip: In timeout mode timeout starts from arrival of first character."
|
||||
"timeout": "Tip: In timeout mode timeout starts from arrival of first character.",
|
||||
"count": "Tip: In count mode msg.count can override the configured count as long as it smaller than the configured value.",
|
||||
"waitfor": "Tip: Optional. Leave blank to receive all data. Can accept chars ($), escape codes (\\n), or hex codes (0x02)." ,
|
||||
"addchar": "Tip: This character is added to every message sent out to the serial port. Usually \\r or \\n."
|
||||
},
|
||||
"onopen": "serial port __port__ opened at __baud__ baud __config__",
|
||||
"errors": {
|
||||
|
|
|
|||
|
|
@ -1,6 +1,6 @@
|
|||
{
|
||||
"name" : "node-red-node-serialport",
|
||||
"version" : "0.7.1",
|
||||
"version" : "0.8.0",
|
||||
"description" : "Node-RED nodes to talk to serial ports",
|
||||
"dependencies" : {
|
||||
"serialport" : "^7.1.4"
|
||||
|
|
|
|||
Loading…
Reference in New Issue