/*
 *  Demonstrates how to use LCDisplay in conjunction with SoftRS485:
 *
 *  The main _loop_ of this program listens on the RS485 bus.
 *  Whenever a message is received from the bus, it is displayed on the LCD.
 */

// include the library code:
#include <LiquidCrystal.h>
#include <SoftRS485.h>

#define Max485_RO 2 // read-output of Max485
#define Max485_RE 8 // not-read-enable of Max485
#define Max485_DE 8 // data enable of Max485
#define Max485_DI 9 // data input of Max485

#define LCD_RS 10
#define LCD_EN 11
#define LCD_D4 4
#define LCD_D5 5
#define LCD_D6 6
#define LCD_D7 7

#define PROGRAM "RS485-Nano 2.1 / LCDReceive 1.2"


// initialize the library by associating any needed LCD interface pin with the arduino pin number it is connected to
LiquidCrystal lcd(LCD_RS, LCD_EN, LCD_D4, LCD_D5, LCD_D6, LCD_D7);


void setup() {
  Serial.begin(115200);
  init485(Max485_RO,Max485_RE,Max485_DE,Max485_DI); // library initialization:
  invert485polarity(true);
  // set up the LCD's number of columns and rows:
  lcd.begin(16, 2);
  // Print a message to the LCD.
  printMessage(PROGRAM);

}

void printMessage(String s){
    Serial.println(s);
    lcd.clear();
    lcd.setCursor(0, 0);
    lcd.print(s);
    if (s.length()>16) {
      lcd.setCursor(0, 1);
      s=s.substring(16);
      s.trim();
      lcd.print(s);
    }  
}

void loop() {
  if (available485()) {
    printMessage(get485message());
  }
}