Freenove/Freenove_WS2812_Lib_for_ESP32

Freenove WS2812 Lib for ESP32

Description

This is an Arduino library for controlling ws2812b led on esp32. Please note that our library supports ESP32 package versions up to 3.0.0. Based on the example program "led_strip" in IDF-SDK. The source code repository is here: https://github.com/espressif/esp-idf/tree/master/examples/peripherals/rmt/led_strip

Examples:

Here are some simple examples.

Show Rainbow

This example make your strip show a flowing rainbow.

#include "Freenove_WS2812_Lib_for_ESP32.h"

#define LEDS_COUNT  8
#define LEDS_PIN	2
#define CHANNEL		0

Freenove_ESP32_WS2812 strip = Freenove_ESP32_WS2812(LEDS_COUNT, LEDS_PIN, CHANNEL);

void setup() {
  strip.begin();
}

void loop() {
  for (int j = 0; j < 255; j += 2) {
    for (int i = 0; i < LEDS_COUNT; i++) {
      strip.setLedColorData(i, strip.Wheel((i * 256 / LEDS_COUNT + j) & 255));
    }
    strip.show();
    delay(2);
  }  
}

Usage

Freenove_ESP32_WS2812 strip = Freenove_ESP32_WS2812(LEDS_COUNT, LEDS_PIN, CHANNEL, TYPE_GRB);

• Construction. Create a strip object.

strip.begin()

Initialization data, ready for communication.

strip.setLedColorData(id, color);
strip.setLedColorData(id, r, g, b);

• Send the color data of the specified LED to the controller.
• Display color change after calling show function.
  • id: the index of led.
  • color: color value. egg, 0xFF0000 is RED color.
  • r,g,b: color value. 0-255.

strip.show();

• Immediately display the color data that has been sent.

strip.setLedColor(id, color);
strip.setLedColor(id, r, g, b);

• Send color data and display it immediately.
• It is equivalent to "strip.setLedColorData(id, color); strip.show();"
  • id: the index of led.
  • color: color value. egg, 0xFF0000 is RED color.
  • r,g,b: color value. 0-255.

strip.Wheel(i)

• A simple color picker.
  • i: 0-255.