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Add needle mode to neopixel

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This commit is contained in:
Dave Conway-Jones 2016-01-13 19:59:30 +00:00
parent d38c152983
commit 08164b5f9f
5 changed files with 44 additions and 18 deletions
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1
hardware/neopixel/README.md
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@ -29,6 +29,7 @@ Usage
-----
Defaults to a bar chart style mode using configured foreground and background colours.
It can also display a needle (single pixel) type gauge.
It can accept a number in **msg.payload** that can be either the number of pixels,
or a percentage of the total length.

20
hardware/neopixel/neopix.py
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@ -62,21 +62,29 @@ def colorWipe(strip, color, wait_ms=30):
def shiftUp(strip, color, wait_ms=30):
"""Shift all pixels one way."""
for i in range(strip.numPixels()):
strip.setPixelColor(LED_COUNT-i, strip.getPixelColor(LED_COUNT-i-1))
oldcolour = strip.getPixelColor(0)
strip.setPixelColor(0, color)
strip.show()
time.sleep(wait_ms/1000.0)
strip.setPixelColor(0,color)
for i in range(1,LED_COUNT):
newcolour = oldcolour
oldcolour = strip.getPixelColor(i)
strip.setPixelColor(i, newcolour)
strip.show()
time.sleep(wait_ms/1000.0)
def shiftDown(strip, color, wait_ms=30):
"""Shift all pixels the other way."""
for i in range(strip.numPixels()):
strip.setPixelColor(i, strip.getPixelColor(i+1))
oldcolour = strip.getPixelColor(LED_COUNT-1)
strip.setPixelColor(LED_COUNT-1, color)
strip.show()
time.sleep(wait_ms/1000.0)
strip.setPixelColor(LED_COUNT-1,color)
for i in range(LED_COUNT-2,-1,-1):
newcolour = oldcolour
oldcolour = strip.getPixelColor(i)
strip.setPixelColor(i, newcolour)
strip.show()
time.sleep(wait_ms/1000.0)
def wheel(pos):
"""Generate rainbow colors across 0-255 positions."""

10
hardware/neopixel/neopixel.html
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@ -30,8 +30,10 @@
<div class="form-row">
<label for="node-input-mode"><i class="fa fa-cogs"></i> Mode</label>
<select id="node-input-mode" style="width:73%">
<option value="pcent">Percent of length</option>
<option value="pixels">Number of pixels</option>
<option value="pcent">Bar - Percent of length</option>
<option value="pixels">Bar - Number of pixels</option>
<option value="pcentneedle">Needle - Percent of length</option>
<option value="pixelsneedle">Needle - Number of pixels</option>
<option value="shiftu">Add pixel to start</option>
<option value="shiftd">Add pixel to end</option>
</select>
@ -50,7 +52,9 @@
<script type="text/x-red" data-help-name="rpi-neopixels">
<p>Raspberry Pi node to drive a string of neopixel or ws2812 LEDs.</p>
<p>Defaults to a bar chart style mode using configured foreground and background colours.
It can accept a number in <b>msg.payload</b> that can be either the number of pixels, or a percentage of the total length.</p>
It can also display a needle (single pixel) type gauge.</p>
<p>It can accept a number in <b>msg.payload</b> that can be either the
number of pixels, or a percentage of the total length.</p>
<p>If you want to change the foregound colour, you can send a CSV of <i>html colour,length</i>.</p>
<p>To set the background just send an <i>html colour</i> name.
<a href="http://html-color-codes.info/color-names/" target="_top">Here

19
hardware/neopixel/neopixel.js
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@ -49,6 +49,7 @@ module.exports = function(RED) {
this.wipe = Number(n.wipe || 40);
if (this.wipe < 0) { this.wipe = 0; }
var node = this;
var needle = "255,255,255";
var p1 = /^\#[A-Fa-f0-9]{6}$/
var p2 = /^[0-9]+,[0-9]+,[0-9]+$/
var p3 = /^[0-9]+,[0-9]+,[0-9]+,[0-9]+$/
@ -62,12 +63,18 @@ module.exports = function(RED) {
if (parts.length === 2) { // it's a colour and length
if (isNaN(parseInt(parts[1]))) { parts = parts.reverse(); }
if (colors.getRGB(parts[0])) {
node.fgnd = colors.getRGB(parts[0]);
var l = parts[1];
if (node.mode === "pcent") { l = parseInt(l / 100 * node.pixels + 0.5); }
if (node.mode.indexOf("pcent") >= 0) { l = parseInt(l / 100 * node.pixels + 0.5); }
l = l - 1;
if (node.mode.indexOf("need") >= 0) {
needle = colors.getRGB(parts[0]);
pay = "0,"+(l-1)+","+node.fgnd+"\n"+l+","+needle+"\n"+(l+1)+","+(node.pixels-1)+","+node.bgnd;
} else {
node.fgnd = colors.getRGB(parts[0]);
pay = "0,"+l+","+node.fgnd+"\n"+(l+1)+","+(node.pixels-1)+","+node.bgnd;
}
console.log(pay);
}
else { node.warn("Invalid payload : "+pay); return; }
}
else {
@ -80,12 +87,16 @@ module.exports = function(RED) {
}
else { // it's a single number so just draw bar
var l = pay;
if (node.mode === "pcent") { l = parseInt(l / 100 * node.pixels + 0.5); }
if (node.mode.indexOf("pcent") >= 0) { l = parseInt(l / 100 * node.pixels + 0.5); }
l = l - 1;
if (node.mode.indexOf("need") >= 0) {
pay = "0,"+(l-1)+","+node.fgnd+"\n"+l+","+needle+"\n"+(l+1)+","+(node.pixels-1)+","+node.bgnd;
} else {
pay = "0,"+l+","+node.fgnd+"\n"+(l+1)+","+(node.pixels-1)+","+node.bgnd;
}
}
}
}
if ((parts.length <= 2) || p2.test(pay) || p3.test(pay) || p4.test(pay) ) {
if (parts.length === 3) { node.bgnd = pay; }
node.child.stdin.write(pay+"\n"); // handle 3 parts, 4 part and 5 parts in the python
@ -136,8 +147,10 @@ module.exports = function(RED) {
if (node.bgnd.split(',').length === 1) {
node.bgnd = colors.getRGB(node.bgnd);
}
if (node.mode.indexOf("shift") === -1) {
node.child.stdin.write(node.bgnd+"\n");
}
}
if (node.fgnd) {
if (node.fgnd.split(',').length === 1) {

2
hardware/neopixel/package.json
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@ -1,6 +1,6 @@
{
"name" : "node-red-node-pi-neopixel",
"version" : "0.0.2",
"version" : "0.0.3",
"description" : "A Node-RED node to output to a neopixel (ws2812) string of LEDS from a Raspberry Pi.",
"dependencies" : {
},