nanoFramework.Iot.Device.Ws28xx 1.2.580

Ws28xx/WS2812B/WS2815B/WS2808/SK6812/Neo pixels 使用 SPI - LED 驱动器

此绑定允许您更新基于 Ws28xx 的 RGB LEDs 灯带和矩阵。

要在代码中查看如何使用此绑定，请参阅 示例。

文档

• WS2812B: 数据表
• WS2815B: 数据表
• WS2808: 数据表
• SK6812: 数据表
• Neo pixels 指南
• Neo pixels x8 stick

板

WS2812B

用法

using System;
using System.Collections.Generic;
using System.Device.Spi;
using System.Drawing;
using Iot.Device.Graphics;
using Iot.Device.Ws28xx;

// Configure the count of pixels
const int Count = 8;
Console.Clear();

// Must specify pin functions on ESP32
Configuration.SetPinFunction(23, DeviceFunction.SPI2_MOSI);
Configuration.SetPinFunction(19, DeviceFunction.SPI2_MISO);
Configuration.SetPinFunction(18, DeviceFunction.SPI2_CLOCK);
Configuration.SetPinFunction(22, DeviceFunction.ADC1_CH10);

// Using VSPI on bus 2 for ESP32 and pin 22 for chipselect
SpiConnectionSettings settings = new(2, 22)
{
    ClockFrequency = 2_400_000,
    Mode = SpiMode.Mode0,
    DataBitLength = 8
};
using SpiDevice spi = SpiDevice.Create(settings);

Ws28xx neo = new Ws2808(spi, count);
//Ws28xx neo = new Ws2812b(spi, Count);

while (true)
{
    Rainbow(neo, Count);
    System.Threading.Thread.Sleep(100);
}

void Rainbow(Ws28xx neo, int count, int iterations = 1)
{
    BitmapImage img = neo.Image;
    for (var i = 0; i < 255 * iterations; i++)
    {
        for (var j = 0; j < count; j++)
        {
            img.SetPixel(j, 0, Wheel((i + j) & 255));
        }

        neo.Update();
    }
}