RGB LED
示例代码
本示例会使用ESP32_WS2812_Lib库来实现板载RGB LED控制。
搜索并下载ESP32_WS2812_Lib库，安装到arduino IDE中，如下图。
注意
掌控板板载RGB LED数量:3，控制IO为P7.
示例-RainBow.ino
1/**
2 * Brief A library for controlling ws2812 in esp32 platform.
3 * Author ZhentaoLin
4 * Url https://github.com/Zhentao-Lin/ESP32_WS2812_Lib
5 * Date 2024-09-02
6 */
7#include "ESP32_WS2812_Lib.h"
8
9#define LEDS_COUNT 3
10#define LEDS_PIN P7
11#define CHANNEL 0
12
13ESP32_WS2812 strip = ESP32_WS2812(LEDS_COUNT, LEDS_PIN, CHANNEL, TYPE_GRB);
14
15void setup() {
16 strip.begin();
17 strip.setBrightness(20);
18}
19
20void loop() {
21 for (int j = 0; j < 255; j += 2) {
22 for (int i = 0; i < strip.getLedCount(); i++) {
23 strip.setLedColorData(i, strip.Wheel((i * 256 / strip.getLedCount() + j) & 255));
24 }
25 strip.show();
26 delay(10);
27 }
28}
运行效果
代码上传后，板载3个灯显示幻彩灯效。