ws2813/ws2818 support about espixelstick

[forkineye]

The ESPixelStick code uses a custom method I developed to generate the WS2811 pixel stream by offloading it to the UART. Both the NeoPixel libraries and FastLED bit-bang the stream which can lead to watchdog resets as it interrupts the wifi stack. If the only difference is the reset time as @Strontium noted, its a fairly quick and easy fix. I'll look into it when I get time, hoping to start working on some updates soon.

[forkineye]

I had WS2801 on my "todo" list for last year, but never got around to it. Most implementations just use SPI, but unfortunately the SPI interface isn't exposed on the ESP-01 module, which means it has to be done in software. I have some WS2801 pixels to test with, just have to get around to writing a "SPI-ish" driver for them and figure out how to handle timing without disrupting the wifi stack.

[rollercontainer]

The external lib Adafruit_NeoPixel does not support WS2813 yet.
Maybe the FastLED lib is a better choice as it already supports WS2813.

https://github.com/FastLED/FastLED

[rollercontainer]

Compiles, but I can not test it.
`
#include <ESP8266WiFi.h>
#include <E131.h>
#include <FastLED.h>

#define NUM_LEDS 60 /* Number of pixels /
#define UNIVERSE 1 / Universe to listen for /
#define CHANNEL_START 1 / Channel to start listening at /
#define DATA_PIN 0 / Pixel output - GPIO0 */

const char ssid[] = "........."; /* Replace with your SSID /
const char passphrase[] = "........"; / Replace with your WPA2 passphrase */

E131 e131;

CRGB leds[NUM_LEDS];

void setup() {
// Uncomment/edit one of the following lines for your leds arrangement.
// FastLED.addLeds<TM1803, DATA_PIN, RGB>(leds, NUM_LEDS);
// FastLED.addLeds<TM1804, DATA_PIN, RGB>(leds, NUM_LEDS);
// FastLED.addLeds<TM1809, DATA_PIN, RGB>(leds, NUM_LEDS);
// FastLED.addLeds<WS2811, DATA_PIN, RGB>(leds, NUM_LEDS);
// FastLED.addLeds<WS2812, DATA_PIN, RGB>(leds, NUM_LEDS);
FastLED.addLeds<WS2813, DATA_PIN, RGB>(leds, NUM_LEDS);
// FastLED.addLeds<WS2812B, DATA_PIN, RGB>(leds, NUM_LEDS);
//FastLED.addLeds<NEOPIXEL, DATA_PIN>(leds, NUM_LEDS);
// FastLED.addLeds<APA104, DATA_PIN, RGB>(leds, NUM_LEDS);
// FastLED.addLeds<UCS1903, DATA_PIN, RGB>(leds, NUM_LEDS);
// FastLED.addLeds<UCS1903B, DATA_PIN, RGB>(leds, NUM_LEDS);
// FastLED.addLeds<GW6205, DATA_PIN, RGB>(leds, NUM_LEDS);
// FastLED.addLeds<GW6205_400, DATA_PIN, RGB>(leds, NUM_LEDS);

  // FastLED.addLeds<WS2801, RGB>(leds, NUM_LEDS);
  // FastLED.addLeds<SM16716, RGB>(leds, NUM_LEDS);
  // FastLED.addLeds<LPD8806, RGB>(leds, NUM_LEDS);
  // FastLED.addLeds<P9813, RGB>(leds, NUM_LEDS);
  // FastLED.addLeds<APA102, RGB>(leds, NUM_LEDS);
  // FastLED.addLeds<DOTSTAR, RGB>(leds, NUM_LEDS);

  // FastLED.addLeds<WS2801, DATA_PIN, CLOCK_PIN, RGB>(leds, NUM_LEDS);
  // FastLED.addLeds<SM16716, DATA_PIN, CLOCK_PIN, RGB>(leds, NUM_LEDS);
  // FastLED.addLeds<LPD8806, DATA_PIN, CLOCK_PIN, RGB>(leds, NUM_LEDS);
  // FastLED.addLeds<P9813, DATA_PIN, CLOCK_PIN, RGB>(leds, NUM_LEDS);
  // FastLED.addLeds<APA102, DATA_PIN, CLOCK_PIN, RGB>(leds, NUM_LEDS);
  // FastLED.addLeds<DOTSTAR, DATA_PIN, CLOCK_PIN, RGB>(leds, NUM_LEDS);
    
Serial.begin(115200);
delay(10);

/* Choose one to begin listening for E1.31 data */
//e131.begin(ssid, passphrase);                       /* via Unicast on the default port */
e131.beginMulticast(ssid, passphrase, UNIVERSE);  /* via Multicast for Universe 1 */

/* Initialize output */
FastLED.show();

}

void loop() {
/* Parse a packet and update pixels */
if(e131.parsePacket()) {
if (e131.universe == UNIVERSE) {
for (int i = 0; i < NUM_LEDS; i++) {
int j = i * 3 + (CHANNEL_START - 1);
leds[i].setRGB( e131.data[j], e131.data[j+1], e131.data[j+2]);
}
FastLED.show();
}
}
}`

[bquesse]

To add to this, using FastLED would also enable support of WS2801 pixels as well as a whole host of other chipsets. It's been ported to the ESP, so there should be no problems slotting it in in place of Adafruit's library.

[bquesse]

Makes sense! Any chance WS2801 pixels would ever be supported? I've got a bunch kicking around I'd love to get on a PixelStick. Thanks for all the hard work you've put into this!

[forkineye]

Reset timing fixed as of 3.0-dev1