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Error compiling for Arduino Mega 2560

Hi.
I have a problem compiling my code, can’t find out what the problem is.
I have reinstalled the program and all the lib´s and updated but still the same problem.

The coding is running smoothly without the Blynk, but when I insert the Blynk coding, my servo stop working and the ultrasonic sensor measurement freeze on the LCD.
I also cannot change the blynk-ser to port 3, instead going to port 1

Here is the error code, can anybody help ?


#define BLYNK_TEMPLATE_ID "TMPLler2LxdY"
#define BLYNK_DEVICE_NAME "Waste Monitoring System in Apartments"
#include <BlynkSimpleStream.h> // Blynk Library
#include <LiquidCrystal_I2C.h> //Library for LCD
#include <Wire.h> //Library for I2C
#include <Servo.h>
Servo SLid;

LiquidCrystal_I2C lcd(0x27, 20, 4); // LCD Address (0x27 for 20 columns and 4 rows)
BlynkTimer timer;
char auth[] = "SgUXLgK3GVDt8j8UnbgFsa9WwBL1oSHG";

int EchoLv1 = 31 ; // Echo Metal Metal = Pin 31
int TrigLv1 = 30 ; // Trig Metal Metal = Pin 32
int GreenLv1 = 50; // LED Green Non-Metal = Pin 8
int RedLv1 = 51; // LED Red Non-Metal = Pin 10
float pingLv1; // Time for ping to travel to target and return
float targetDisLv1; // Distance from sensor to target
float targetDistLv1; // Data sent to Blynk
int PercentageLv1;

int EchoLv2 = 49 ; // Echo Metal Metal = Pin 33
int TrigLv2 = 48 ; // Trig Metal Metal = Pin 34
float pingLv2 ; // Time for ping to travel to target and return
float targetDisLv2; // Distance from sensor to target
float targetDistLv2;
int PercentageLv2;

float speedOfSound = 776.5; // Speed of Sound in Miles per Hour = 776.5
String TeamGroup = "  Group 3 Project "; // String for LCD

void setup()
{
  Serial.begin(9600); // Turn on Serial Port
  Blynk.begin(Serial, auth);
  pinMode(EchoLv1, INPUT); // EchoLv1 is Input
  pinMode(TrigLv1, OUTPUT); // TrigLv1 is Output
  pinMode(EchoLv2, INPUT); // EchoLv2 is Input
  pinMode(TrigLv2, OUTPUT); // TrigLv2 is Output
  SLid.attach(22);
  lcd.init();
  lcd.backlight();
  //timer.setInterval(300L, GarbageCap); // USMe pause for 0.3 seconds
}

void GarbageCap()
{

  digitalWrite(TrigLv1, LOW); // Set TrigMe Low
  delayMicroseconds(5); // Pause to set signal settle
  digitalWrite(TrigLv1, HIGH); // Set TrigMe High
  delayMicroseconds(10); // Pause in high state
  digitalWrite(TrigLv1, LOW); // Set TrigMe Low
  pingLv1 = pulseIn(EchoLv1, HIGH); // Set EchoMe High
  targetDistLv1 = (pingLv1 / 2) / 29.1;
  PercentageLv1 = map(targetDistLv1, 100, 10, 0, 100);
  //Blynk.write the value of targetDUS3 on V48

  lcd.setCursor(0, 0); // Starting with 0 columns and 0 rows
  lcd.print(TeamGroup); // Print the LCD with the String given
  lcd.setCursor(2, 1); // Starting with 0 columns and 2 rows
  lcd.print("Garbage Capacity");
  lcd.setCursor(2, 2);
  lcd.print("in %     : ");
  lcd.print(PercentageLv1);
  lcd.print("% ");
  lcd.setCursor(2, 3);
  lcd.print("in CM : ");
  lcd.print(targetDistLv1, 2);
  Blynk.virtualWrite(V25, targetDistLv1);
  Serial.print("\nin % =" );
  Serial.print(PercentageLv1);
  Serial.print("\nin CM = ");
  Serial.print(targetDistLv1, 2);
  Serial.print("\n");

  if (targetDistLv1 < 20) // Less than 10cm
  {
    analogWrite(RedLv1, 250); // Red LED Metal will on
    analogWrite(GreenLv1, 0); // Green LED Metal will off
    lcd.setCursor(2, 3);
    lcd.print("Capacity : Full");

  }
  else
  {
    analogWrite(RedLv1, 0); // Red LED Metal will off
    analogWrite(GreenLv1, 250);
    lcd.setCursor(2, 3);
    lcd.print("Capacity : Empty");
  }
}

void LidMove()
{
  digitalWrite(TrigLv2, LOW); // Set TrigMe Low
  delayMicroseconds(100); // Pause to set signal settle
  digitalWrite(TrigLv2, HIGH); // Set TrigMe High
  delayMicroseconds(20); // Pause in high state
  digitalWrite(TrigLv2, LOW); // Set TrigMe Low

  pingLv2 = pulseIn(EchoLv2, HIGH); // Set EchoMe High
  pingLv2 = pingLv2 / 1000000; // Converts ping time to seconds
  pingLv2 = pingLv2 / 3600; // Converts ping time to hours
  targetDisLv2 = speedOfSound * pingLv2; // Calculate distance in miles
  targetDisLv2 = targetDisLv2 / 2; // Accounts for round trip of ping to target
  targetDisLv2 = targetDisLv2 * 63360; // Convert targetDistance to inches (63360 inches in a miles)
  targetDistLv2 = targetDisLv2 * 2.54; // Conver inches to centimeters (2.54 centimeters in a inches)
  SLid.write(0);
  if (targetDistLv2 < 20) // Less than 10cm
  {
    SLid.write(90);
    delay(1000);// Servo move to 100 degrees
  }
  else
  {
    SLid.write(0); // Servo move to 0 degrees
  }
}

void loop()
{
   Blynk.run(); // Run Blynk Apps
   //timer.run();
  //GarbageCap();
  GarbageCap();
  LidMove();// Run Timer
}

Uninstall Blynk library 1.0.0 and install 0.6.1 instead.

Pete.

Thanks, it works. The error of compiling is done and another thing occurs.

  1. Done compiling and upload to the board.
  2. I click the blynk-ser, to change the COM port but it immediately run with COM 1 even though I using with COM 3

Okay for now, the manual changing COM part is done by using the CMD blynk-ser.bat -c COM3 but now the problem is

  1. The meter for the vertical on the Blynk is not moving when I put the code at the void loop. I tried putting the GarbageCap and LidMove, the hardware works but not for the blynk, it freeze

  2. When I didnt put the GarbageCap and LidMove the hardware didnt work and the blynk freeze

#define BLYNK_TEMPLATE_ID "TMPLler2LxdY"
#define BLYNK_DEVICE_NAME "Waste Monitoring System in Apartments"
#include <BlynkSimpleStream.h> // Blynk Library
#include <LiquidCrystal_I2C.h> //Library for LCD
#include <Wire.h> //Library for I2C
#include <Servo.h>
Servo SLid;

LiquidCrystal_I2C lcd(0x27, 20, 4); // LCD Address (0x27 for 20 columns and 4 rows)
BlynkTimer timer;
char auth[] = "SgUXLgK3GVDt8j8UnbgFsa9WwBL1oSHG";

int EchoLv1 = 31 ; // Echo Metal Metal = Pin 31
int TrigLv1 = 30 ; // Trig Metal Metal = Pin 32
int GreenLv1 = 50; // LED Green Non-Metal = Pin 8
int RedLv1 = 51; // LED Red Non-Metal = Pin 10
float pingLv1; // Time for ping to travel to target and return
float targetDisLv1; // Distance from sensor to target
float targetDistLv1; // Data sent to Blynk
int PercentageLv1;

int EchoLv2 = 49 ; // Echo Metal Metal = Pin 33
int TrigLv2 = 48 ; // Trig Metal Metal = Pin 34
float pingLv2 ; // Time for ping to travel to target and return
float targetDisLv2; // Distance from sensor to target
float targetDistLv2;
int PercentageLv2;

float speedOfSound = 776.5; // Speed of Sound in Miles per Hour = 776.5
String TeamGroup = "  Group 3 Project "; // String for LCD

void setup()
{
  Serial.begin(9600); // Turn on Serial Port
  Blynk.begin(Serial, auth);
  pinMode(EchoLv1, INPUT); // EchoLv1 is Input
  pinMode(TrigLv1, OUTPUT); // TrigLv1 is Output
  pinMode(EchoLv2, INPUT); // EchoLv2 is Input
  pinMode(TrigLv2, OUTPUT); // TrigLv2 is Output
  SLid.attach(22);
  lcd.init();
  lcd.backlight();
  timer.setInterval(300L, GarbageCap); // USMe pause for 0.3 seconds
}

void GarbageCap()
{

  digitalWrite(TrigLv1, LOW); // Set TrigMe Low
  delayMicroseconds(5); // Pause to set signal settle
  digitalWrite(TrigLv1, HIGH); // Set TrigMe High
  delayMicroseconds(10); // Pause in high state
  digitalWrite(TrigLv1, LOW); // Set TrigMe Low
  pingLv1 = pulseIn(EchoLv1, HIGH); // Set EchoMe High
  targetDistLv1 = (pingLv1 / 2) / 29.1;
  PercentageLv1 = map(targetDistLv1, 100, 10, 0, 100);
  //Blynk.write the value of targetDUS3 on V48

  lcd.setCursor(0, 0); // Starting with 0 columns and 0 rows
  lcd.print(TeamGroup); // Print the LCD with the String given
  lcd.setCursor(2, 1); // Starting with 0 columns and 2 rows
  lcd.print("Garbage Capacity");
  lcd.setCursor(2, 2);
  lcd.print("in %     : ");
  lcd.print(PercentageLv1);
  lcd.print("% ");
  lcd.setCursor(2, 3);
  lcd.print("in CM : ");
  lcd.print(targetDistLv1, 2);
  Blynk.virtualWrite(V25, targetDistLv1);
  Serial.print("\nin % =" );
  Serial.print(PercentageLv1);
  Serial.print("\nin CM = ");
  Serial.print(targetDistLv1, 2);
  Serial.print("\n");

  if (targetDistLv1 < 20) // Less than 10cm
  {
    analogWrite(RedLv1, 250); // Red LED Metal will on
    analogWrite(GreenLv1, 0); // Green LED Metal will off
    lcd.setCursor(2, 3);
    lcd.print("Capacity : Full");

  }
  else
  {
    analogWrite(RedLv1, 0); // Red LED Metal will off
    analogWrite(GreenLv1, 250);
    lcd.setCursor(2, 3);
    lcd.print("Capacity : Empty");
  }
}

void LidMove()
{
  digitalWrite(TrigLv2, LOW); // Set TrigMe Low
  delayMicroseconds(100); // Pause to set signal settle
  digitalWrite(TrigLv2, HIGH); // Set TrigMe High
  delayMicroseconds(20); // Pause in high state
  digitalWrite(TrigLv2, LOW); // Set TrigMe Low

  pingLv2 = pulseIn(EchoLv2, HIGH); // Set EchoMe High
  pingLv2 = pingLv2 / 1000000; // Converts ping time to seconds
  pingLv2 = pingLv2 / 3600; // Converts ping time to hours
  targetDisLv2 = speedOfSound * pingLv2; // Calculate distance in miles
  targetDisLv2 = targetDisLv2 / 2; // Accounts for round trip of ping to target
  targetDisLv2 = targetDisLv2 * 63360; // Convert targetDistance to inches (63360 inches in a miles)
  targetDistLv2 = targetDisLv2 * 2.54; // Conver inches to centimeters (2.54 centimeters in a inches)
  SLid.write(0);
  if (targetDistLv2 < 20) // Less than 10cm
  {
    SLid.write(90);
    delay(1000);// Servo move to 100 degrees
  }
  else
  {
    SLid.write(0); // Servo move to 0 degrees
  }
}

void loop()
{
   Blynk.run(); // Run Blynk Apps
   timer.run();
   GarbageCap();
   GarbageCap();
   LidMove();// Run Timer
}

You can’t use the same Serial port for both the USB link and serial monitor prints. You need to add another begin() and move all the the print() commands to another hardware serial port like Serial1 - 19(RX), 18(TX) on the Mega and use a TTL-USB adapter with another terminal program like Termite to view the data.

Look at how that is done in this example…

2 Likes

Thanks @Gunner and @PeteKnight it solves the problem !

1 Like