hey hi can you please explain this code give below
#include <SoftwareSerial.h>
//SoftwareSerial mySerial(10, 11);
SoftwareSerial mySerial(3,2);
String inputString = ""; // a string to hold incoming data
long int counter = 0;
String cmd = "";
//////////////
#include "pitches.h"
int melody[] = {
NOTE_C4, NOTE_G3
};
// note durations: 4 = quarter note, 8 = eighth note, etc.:
int noteDurations[] = {
15, 5
};
////////////////////////
//#include "EmonLib.h" // Include Emon Library
#include "FastLED.h"
#define NUM_LEDS 16 // LED strips number
#define DATA_PIN 9
CRGB leds[NUM_LEDS];
//////////////
#include <VirtualWire.h>
const int led_pin = 13;
const int transmit_pin = 1;
const int receive_pin = 6;
////const int transmit_en_pin = 4;
const long interval = 1000;
unsigned long crtime; // use in milli func.
unsigned long trigertime = 0;
unsigned long previousMillis = 0; // will store last time LED was updated
int ledState = LOW;
int inByte;
void setup() {
FastLED.addLeds<NEOPIXEL, DATA_PIN>(leds, NUM_LEDS);
Serial.begin(9600);
}
void loop() {
if (Serial.available() > 0) {
Serial.println(inByte);
if (mySerial.available() > 0) {
inByte = mySerial.read();
Serial.println(inByte);
if (inByte == '9')
{ // LED ON and OFF for 1 sec.
Serial.println("LED ON");
ledon();
delay(50);
ledoff();
Rgb();
delay(10);
cgb();
delay(10);
ledoff();
}
}
else if (inByte == '2') { // LED go and come back func.
Serial.println("LED Line");
Rgb();
}
// else if (inByte == '3') { // 6 LED run one by one
// Serial.println("6 LED runs");
// half();
// }
// ourdelay(our_delay_trigger); // our own delay by default this delay runs
}
}
void ledon() {
for (int i = 0; i < 25; i++) {
leds[i] = CRGB::Red;
FastLED.show();
}
// trigertime = millis();
}
void ledoff() {
Serial.println("LED OFF");
for (int i = 25; i >= 0; i--) {
leds[i] = CRGB::Black;
FastLED.show();
}
}
void Rgb() {
for (int whiteLed = 0; whiteLed < NUM_LEDS; whiteLed++) {
Serial.println(whiteLed);
FastLED.show();
leds[whiteLed] = CRGB::Red;
}
}
void cgb() {
Serial.println(millis());
for (int i =0 ; i < NUM_LEDS; i++) {
Serial.println(i);
leds[i] = CRGB::Black;
FastLED.show();
}
}
void speaker(){
for (int thisNote = 0; thisNote < 2; thisNote++) {
// to calculate the note duration, take one second divided by the note type.
//e.g. quarter not
// e = 1000 / 4, eighth note = 1000 / 8, etc.
int noteDuration = 1000 / noteDurations[thisNote];
tone(8, melody[thisNote], noteDuration);
// to distinguish the notes, set a minimum time between them.
// the note's duration + 30% seems to work well:
int pauseBetweenNotes = noteDuration * 1.30;
delay(pauseBetweenNotes);
// stop the tone playing:
noTone(8);
}
}
void ourdelay(int dela) {
crtime = millis();
if (crtime - trigertime >= dela) {
ledoff();
}
}
