Networking & Communications | Week 15

Controlling RGB of Main board from LED Board via Switch

In this week I have used two boards

  • My Final Project Board using 328P
  • LED and Switch board using Atty Tiny
  • I have added two external LED to my Final Project Board to check Networking and communication.




This week I have worked with two circuit board each of them is communicating with rx tx pins
one board is multiple LED and other board is My Master bored with a design for my final project Makerbot.
from Masters circuit sends a signal is slave Circuit to start a LED.
My Slave Circuit decide a Delay and start LED.
After delay my Slave Circuit send a signal to Master Circuit. That LED is off then only we can start other LED.
I have added both Code with comments to understand the same process.

Code for Slave Circuit


	#include <SoftwareSerial.h>
SoftwareSerial myS(6,5); // rx, tx
int r = 11;
int b = 12;
int R_INT;
char c;
void setup() 
{
  myS.begin(9600);
  Serial.begin(9600);
  pinMode(r, OUTPUT);
  pinMode(b, OUTPUT);  

}

void loop() 
{
   if( myS.available() ){
     R_INT = random(20, 80) * 100;
     c = myS.read();
     Serial.println(R_INT);
     if( c == 'r' ){
       digitalWrite(r, HIGH);
       digitalWrite(b, LOW);
       delay(R_INT);
       myS.write('o');
       digitalWrite(r, LOW);
       
     }
     else if( c == 'b') {
       digitalWrite(r, LOW);
       digitalWrite(b, HIGH);
       delay(R_INT);
       myS.write('k');
       digitalWrite(b, LOW);
     }
   }
}

Code for second circuit Maker Bot ( Master )

 
											

#include <SoftwareSerial.h>
SoftwareSerial mySerial(5,6);//Rx,Tx

char c;
void BlinkOne(){
      //turn on LED
      digitalWrite(0,HIGH);
      digitalWrite(1,LOW);
      
      delay(300);
      //turn off led immidiately
      digitalWrite(0,LOW);     
 }

 void BlinkTwo(){
       //turn on second LED
      digitalWrite(1,HIGH);
      digitalWrite(0,LOW);
      
      delay(300);
      //turn off led immidiately
      digitalWrite(1,LOW); 
}

void waitAck(){
  while( ! mySerial.available() );
     c = mySerial.read();
     if( c == 'o'){
        //Acknowledgment recieved that LED1 of slave turned off after some random time
        BlinkOne();
     }
     else if( c == 'k'){
        //Acknowledgment recieved that LED2 of slave turned off after some random time
        BlinkTwo();
     }
 }

 
void setup() {
  pinMode(0,OUTPUT);
  pinMode(1,OUTPUT);
  mySerial.begin(9600);
}

void loop() {
 
  if( digitalRead(9) == LOW){

      //tell slave board to turn on 'r' light 
      mySerial.write('r');

      //Blink LED1 to indicate Data sent
      BlinkOne();

      waitAck();
  }
  else if( digitalRead(8) == LOW){

      //tell slave board to turn on 'b' light 
      mySerial.write('b');
      
      //Blink LED2 to indicate Data sent
      BlinkTwo();

      waitAck();
  }

}

LED control with other Circuits by Rx & Tx

Files

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