frodovdr/node-red
1
0
Fork 0
mirror of https://github.com/node-red/node-red.git synced 2025-03-01 10:36:34 +00:00
Code Issues Packages Projects Releases Wiki Activity

New Pi GPIO node based on RPI.GPIO library.

Browse Source 
Adds PWM support of outputs and easier access to interrupts for inputs.
This commit is contained in:
dceejay
2014-12-27 13:11:44 +00:00
parent b4dc66944a
commit 9e4187d6a8
4 changed files with 327 additions and 132 deletions
Download Patch File Download Diff File Expand all files Collapse all files

65
nodes/core/hardware/36-rpi-gpio.html
View File

@@ -45,7 +45,6 @@
<option value="tri">none</option>
<option value="up">pullup</option>
<option value="down">pulldown</option>
<!--<option value="tri">tristate</option>-->
</select>
</div>
<div class="form-row">
@@ -63,11 +62,11 @@
<script type="text/x-red" data-help-name="rpi-gpio in">
<p>Raspberry Pi input node. Generates a <b>msg.payload</b> with either a 0 or 1 depending on the state of the input pin. Requires the gpio command to work.</p>
<p>You may also enable the input pullup resitor or the pulldown resistor.</p>
<p>You may also enable the input pullup resistor or the pulldown resistor.</p>
<p>The <b>msg.topic</b> is set to <i>pi/{the pin number}</i></p>
<p>Requires the RPi.GPIO python library version 0.5.8 (or better) in order to work.</p>
<p><b>Note:</b> we are using the actual physical pin numbers on connector P1 as they are easier to locate.</p>
<p><b>Note:</b> This node currently polls the pin every 250mS. This is not ideal as it loads the cpu.</p>
</script>
</script>
<script type="text/javascript">
RED.nodes.registerType('rpi-gpio in',{
@@ -90,6 +89,7 @@
},
oneditprepare: function() {
var pinnow = this.pin;
var pinsInUse = {};
$.getJSON('rpi-gpio/'+this.id,function(data) {
$('#pitype').text(data.type);
if ((data.type === "Model B+") || (data.type === "Model A+")) {
@@ -107,11 +107,31 @@
$('#node-input-pin').val(pinnow);
}
});
$.getJSON('rpi-pins/'+this.id,function(data) {
pinsInUse = data || {};
});
$("#node-input-pin").change(function() {
var pinnew = $("#node-input-pin").val();
if ((pinnew) && (pinnew !== pinnow)) {
if (pinsInUse.hasOwnProperty(pinnew)) {
RED.notify("Pin "+pinnew+" already in use.","info");
}
pinnow = pinnew;
}
});
$("#node-input-intype").change(function() {
var newtype = $("#node-input-intype option:selected").val();
if ((pinsInUse.hasOwnProperty(pinnow)) && (pinsInUse[pinnow] !== newtype)) {
RED.notify("Pin "+pinnow+" already set as "+pinsInUse[pinnow],"error");
}
});
}
});
</script>
<script type="text/x-red" data-template-name="rpi-gpio out">
<div class="form-row">
<label for="node-input-pin"><i class="fa fa-circle"></i> GPIO Pin</label>
@@ -123,7 +143,7 @@
<option value="8">8 - TxD </option>
<option value="10">10 - RxD </option>
<option value="11">11 - GPIO0</option>
<option value="12">12 - GPIO1 (PWM)</option>
<option value="12">12 - GPIO1</option>
<option value="13">13 - GPIO2</option>
<option value="15">15 - GPIO3</option>
<option value="16">16 - GPIO4</option>
@@ -169,7 +189,8 @@
<p>Raspberry Pi output node. Expects a <b>msg.payload</b> with either a 0 or 1 (or true or false). Requires the gpio command to work.</p>
<p>Will set the selected physical pin high or low depending on the value passed in.</p>
<p>The initial value of the pin at deploy time can also be set to 0 or 1.</p>
<p>Use of PWM on Pin 12 - GPIO1 will interfere with any other audio playback.</p>
<p>When using PWM mode - expects an input value of a number 0 - 100.</p>
<p>Requires the RPi.GPIO python library version 0.5.8 (or better) in order to work.</p>
<p><b>Note:</b> we are using the actual physical pin numbers on connector P1 as they are easier to locate.</p>
</script>
@@ -189,7 +210,7 @@
icon: "rpi.png",
align: "right",
label: function() {
if ((this.pin == 12) && (this.out === "pwm")) { return this.name || "PWM: 12"; }
if (this.out === "pwm") { return this.name || "PWM: "+this.pin; }
else { return this.name||"Pin: "+this.pin ; }
},
labelStyle: function() {
@@ -197,6 +218,7 @@
},
oneditprepare: function() {
var pinnow = this.pin;
var pinsInUse = {};
if (!$("#node-input-out").val()) { $("#node-input-out").val("out"); }
$.getJSON('rpi-gpio/'+this.id,function(data) {
$('#pitype').text(data.type);
@@ -216,17 +238,26 @@
}
});
var hidepwm = function() {
if ($('#node-input-pin').val() == 12) {
$('#node-set-pwm').show();
$.getJSON('rpi-pins/'+this.id,function(data) {
pinsInUse = data || {};
});
$("#node-input-pin").change(function() {
var pinnew = $("#node-input-pin").val();
if ((pinnew) && (pinnew !== pinnow)) {
if (pinsInUse.hasOwnProperty(pinnew)) {
RED.notify("Pin "+pinnew+" already in use.","info");
}
pinnow = pinnew;
}
else {
$('#node-set-pwm').hide();
$('#node-input-out').val("out");
});
$("#node-input-out").change(function() {
var newtype = $("#node-input-out option:selected").val();
if ((pinsInUse.hasOwnProperty(pinnow)) && (pinsInUse[pinnow] !== newtype)) {
RED.notify("Pin "+pinnow+" already set as "+pinsInUse[pinnow],"error");
}
};
$("#node-input-pin").change(function () { hidepwm(); });
hidepwm();
});
var hidestate = function () {
if ($("#node-input-out").val() === "pwm") {