Unit PoE-P4 RGB LED

#include "M5Unified.h"

void setRGB(uint8_t r, uint8_t g, uint8_t b){
    uint8_t red = ~r;
    uint8_t green = ~g;
    uint8_t blue = ~b;
    analogWrite(17, red);
    analogWrite(15, green);
    analogWrite(16, blue);
}

void setup() {
    M5.begin();
    pinMode(15, OUTPUT);
    analogWriteResolution(15, 8);
    pinMode(16, OUTPUT);
    analogWriteResolution(16, 8);
    pinMode(17, OUTPUT);
    analogWriteResolution(17, 8);
}

void loop() {
    setRGB(255, 0, 0);// red
    delay(2000);
    setRGB(0, 255, 0);// green
    delay(2000);
    setRGB(0, 0, 255);// blue
    delay(2000);
}