Rs485 nick gammon, code guidance

Projects Programming
1

Hello everyone, i am trying to incorporate the blocking example and use it with the non-blocking library from this tutorial https://www.gammon.com.au/forum/?id=11428 .

My problem is that i dont have the max485 chips yet and i would like to be ready when they arrive.

What i wrote so far is this.

Non-blocking transmitter :

#include <RS485_non_blocking.h>

#include <SoftwareSerial.h>

const byte ENABLE_PIN = 4;
const byte LED_PIN = 13;

SoftwareSerial rs485 (2, 3);  // receive pin, transmit pin

// callback routines
  
void fWrite (const byte what)
  {
  rs485.write (what);  
  }
  
int fAvailable ()
  {
  return rs485.available ();  
  }

int fRead ()
  {
  return rs485.read ();  
  }

  RS485 myChannel (NULL, NULL, fWrite, 0);

void setup()
{
  rs485.begin (28800);
  pinMode (ENABLE_PIN, OUTPUT);  // driver output enable
  pinMode (LED_PIN, OUTPUT);  // built-in LED
}  // end of setup
  
//byte old_level = 0;

void loop()
{

  // read potentiometer
  byte level = analogRead (0) / 4;
  
      
  // assemble message
  byte msg [] = { 
     1,    // device 1
     2,    // turn light on
     level // to what level
  };

  // send to slave  
myChannel.sendMsg (msg, sizeof (msg));
delay (1000);



}  // end of loop

Non-blocking reciever :

#include <RS485_non_blocking.h>

#include <SoftwareSerial.h>


SoftwareSerial rs485 (2, 3);  // receive pin, transmit pin
const byte ENABLE_PIN = 4;

void fWrite (const byte what)
  {
  rs485.write (what);  
  }
  
int fAvailable ()
  {
  return rs485.available ();  
  }

int fRead ()
  {
  return rs485.read ();  
  }

  RS485 myChannel (fRead, fAvailable, NULL, 20);

void setup()
{
  rs485.begin (28800);
  pinMode (ENABLE_PIN, OUTPUT);  // driver output enable
}

void loop()
{
  byte buf [10];

  if (myChannel.update ())
    {
    Serial.write (myChannel.getData (), myChannel.getLength ()); 
    Serial.println ();

    if (buf [0] != 1)
      return;  // not my device
      
    if (buf [1] != 2)
      return;  // unknown command
    
    byte msg [] = {
       0,  // device 0 (master)
       3,  // turn light on command received
    };
  //byte received = recvMsg (fAvailable, fRead, buf, sizeof (buf));
  
  
    
    delay (1);  // give the master a moment to prepare to receive

    
    analogWrite (11, buf [2]);  // set light level
   }  // end if something received
   
}  // end of loop

Is this code correct? Do you guys think it will work? or did i leave something out?

Thanks in advance!