【花雕体验】19 合宙ESP32_C3点亮WS2812B硬屏
手头有64位和256位WS2812B的硬屏各一片,现在尝试点亮它们WS2812主要特点
● 智能反接保护,电源反接不会损坏IC。
● IC控制电路与LED点光源公用一个电源。
● 控制电路与RGB芯片集成在一个5050封装的元器件中,构成一个完整的外控像素点。
● 内置信号整形电路,任何一个像素点收到信号后经过波形整形再输出,保证线路波形畸变不会累加。
● 内置上电复位和掉电复位电路。
● 每个像素点的三基色颜色可实现256级亮度显示,完成16777216种颜色的全真色彩显示,扫描频率不低于400Hz/s。
● 串行级联接口,能通过一根信号线完成数据的接收与解码。
● 任意两点传传输距离在不超过5米时无需增加任何电路。
● 当刷新速率30帧/秒时,级联数不小于1024点。
● 数据发送速度可达800Kbps。
● 光的颜色高度一致,性价比高。
WS2812模块电原理图
合宙CORE ESP32-C3核心板,是基于乐鑫ESP32-C3芯片进行设计的一款开发板。尺寸仅有21mm×51mm,板边采用邮票孔设计,板载 Wi-Fi/BLE天线,方便开发者在不同场景下的使用。核心板支持UART、GPIO、SPI、I2C、ADC、PWM等接口,可根据实际需要选用。
1路SPI FLASH,板载4MB,支持最高 16MB
2路UART接口,UART0~UART1,其中下载口为UART0
6 路 12 比特 ADC,最高采样率 100KSPS
1路低速SPI接口,支持主模式
1路IIC控制器
4路PWM接口
GPIO外部管脚15路,可复用
2路贴片LED指示灯
1路复位按键+1路BOOT按键
1路USB转TTL下载调试口
2.4G PCB板载天线
打开Arduino IDE——工具——管理库,搜索Adafruit NeoPixel,并安装
【花雕体验】19 合宙ESP32_C3点亮WS2812B硬屏
实验程序一:64位绿色上漂灯
/*
【花雕体验】19 合宙ESP32_C3点亮WS2812B硬屏
实验程序一:64位绿色上漂灯
*/
#include <Adafruit_NeoPixel.h>
#define PIN 9
#define MAX_LED 64
int val = 0;
Adafruit_NeoPixel strip = Adafruit_NeoPixel( MAX_LED, PIN, NEO_RGB + NEO_KHZ800 );
void setup() {
strip.setBrightness(150);
strip.begin();
strip.show();
}
void loop() {
uint8_t i, a = 0;
uint32_t color = strip.Color(160, 10, 10);
while (a < 64)
{
for (i = 0; i < 64; i++)
{
if (i == a) strip.setPixelColor(i, color);
else strip.setPixelColor(i, 0);
}
strip.show();
delay(6);
a++;
}
}
实验串口返回情况
实验场景图动态图 http://bbs.eeworld.com.cn/data/attachment/forum/202207/12/114817i2mpwpmvfzf0mn7w.gif
【花雕体验】19 合宙ESP32_C3点亮WS2812B硬屏
实验程序二:一个基本的NeoPixel 灯板灯条测试程序
/*
【花雕体验】19 合宙ESP32_C3点亮WS2812B硬屏
实验程序二:一个基本的NeoPixel 灯板灯条测试程序
*/
#include <Adafruit_NeoPixel.h>
#define PIN 9
#define NUMPIXELS 64
Adafruit_NeoPixel strip = Adafruit_NeoPixel(NUMPIXELS, PIN, NEO_GRB + NEO_KHZ800);
void setup() {
strip.setBrightness(50);
strip.begin();
strip.show();
}
void loop() {
// Fill along the length of the strip in various colors...
colorWipe(strip.Color(255, 0, 0), 50); // Red
colorWipe(strip.Color(0, 255, 0), 50); // Green
colorWipe(strip.Color(0, 0, 255), 50); // Blue
// Do a theater marquee effect in various colors...
theaterChase(strip.Color(127, 127, 127), 50); // White, half brightness
theaterChase(strip.Color(127, 0, 0), 50); // Red, half brightness
theaterChase(strip.Color(0, 0, 127), 50); // Blue, half brightness
rainbow(10); // Flowing rainbow cycle along the whole strip
theaterChaseRainbow(50); // Rainbow-enhanced theaterChase variant
}
// Some functions of our own for creating animated effects -----------------
// Fill strip pixels one after another with a color. Strip is NOT cleared
// first; anything there will be covered pixel by pixel. Pass in color
// (as a single 'packed' 32-bit value, which you can get by calling
// strip.Color(red, green, blue) as shown in the loop() function above),
// and a delay time (in milliseconds) between pixels.
void colorWipe(uint32_t color, int wait) {
for (int i = 0; i < strip.numPixels(); i++) { // For each pixel in strip...
strip.setPixelColor(i, color); //Set pixel's color (in RAM)
strip.show(); //Update strip to match
delay(wait); //Pause for a moment
}
}
// Theater-marquee-style chasing lights. Pass in a color (32-bit value,
// a la strip.Color(r,g,b) as mentioned above), and a delay time (in ms)
// between frames.
void theaterChase(uint32_t color, int wait) {
for (int a = 0; a < 10; a++) { // Repeat 10 times...
for (int b = 0; b < 3; b++) { //'b' counts from 0 to 2...
strip.clear(); // Set all pixels in RAM to 0 (off)
// 'c' counts up from 'b' to end of strip in steps of 3...
for (int c = b; c < strip.numPixels(); c += 3) {
strip.setPixelColor(c, color); // Set pixel 'c' to value 'color'
}
strip.show(); // Update strip with new contents
delay(wait);// Pause for a moment
}
}
}
// Rainbow cycle along whole strip. Pass delay time (in ms) between frames.
void rainbow(int wait) {
// Hue of first pixel runs 5 complete loops through the color wheel.
// Color wheel has a range of 65536 but it's OK if we roll over, so
// just count from 0 to 5*65536. Adding 256 to firstPixelHue each time
// means we'll make 5*65536/256 = 1280 passes through this outer loop:
for (long firstPixelHue = 0; firstPixelHue < 5 * 65536; firstPixelHue += 256) {
for (int i = 0; i < strip.numPixels(); i++) { // For each pixel in strip...
// Offset pixel hue by an amount to make one full revolution of the
// color wheel (range of 65536) along the length of the strip
// (strip.numPixels() steps):
int pixelHue = firstPixelHue + (i * 65536L / strip.numPixels());
// strip.ColorHSV() can take 1 or 3 arguments: a hue (0 to 65535) or
// optionally add saturation and value (brightness) (each 0 to 255).
// Here we're using just the single-argument hue variant. The result
// is passed through strip.gamma32() to provide 'truer' colors
// before assigning to each pixel:
strip.setPixelColor(i, strip.gamma32(strip.ColorHSV(pixelHue)));
}
strip.show(); // Update strip with new contents
delay(wait);// Pause for a moment
}
}
// Rainbow-enhanced theater marquee. Pass delay time (in ms) between frames.
void theaterChaseRainbow(int wait) {
int firstPixelHue = 0; // First pixel starts at red (hue 0)
for (int a = 0; a < 30; a++) { // Repeat 30 times...
for (int b = 0; b < 3; b++) { //'b' counts from 0 to 2...
strip.clear(); // Set all pixels in RAM to 0 (off)
// 'c' counts up from 'b' to end of strip in increments of 3...
for (int c = b; c < strip.numPixels(); c += 3) {
// hue of pixel 'c' is offset by an amount to make one full
// revolution of the color wheel (range 65536) along the length
// of the strip (strip.numPixels() steps):
int hue = firstPixelHue + c * 65536L / strip.numPixels();
uint32_t color = strip.gamma32(strip.ColorHSV(hue)); // hue -> RGB
strip.setPixelColor(c, color); // Set pixel 'c' to value 'color'
}
strip.show(); // Update strip with new contents
delay(wait); // Pause for a moment
firstPixelHue += 65536 / 90; // One cycle of color wheel over 90 frames
}
}
}
实验场景图动态图 http://bbs.eeworld.com.cn/data/attachment/forum/202207/12/135553bdzang6a7tqdxx06.gif