int Toggle=0;
void setup() {}
void loop() 
{
 UpdateStatusLEDs(Toggle);
 Toggle = 1 - Toggle;
 delay (1000);
}
//-------------------------------------------- //
// COMMON Update routine for the status LEDs
//-------------------------------------------- 
void UpdateStatusLEDs(int Toggle)
{
 if(Toggle) 
 {
 SetStatusLED(Toggle * random(100), Toggle * random(100), Toggle * random(100)); 
 analogWrite(48, Toggle * 50); 
 }
 else
 {
 SetStatusLED(0,0,0); 
 analogWrite(48, 0); // on Nano ESP32 Turn the LED off 
 }
}
//--------------------------------------------
// COMMON Control the RGB LED on the Nano ESP32
// Analog range 0 - 512. 0 is LED On max intensity
// 512 is LED off. Therefore the value is subtracted from 512 
//--------------------------------------------
void SetStatusLED(int Red, int Green, int Blue)
{
 analogWrite(LED_RED, 512 - Red); // !Red (not Red) because 1 or HIGH is LED off
 analogWrite(LED_GREEN, 513 - Green);
 analogWrite(LED_BLUE, 513 - Blue);
}

none