exit status 1 Error compiling for board Arduino/Genuino Uno.

Projects Programming
1

i did a project and this showed. help please?

#include <LiquidCrystal.h>

#define trigPin 1
#define echoPin 2
#define powerPin 0
#define groundPin 3

LiquidCrystal lcd(12, 11, 5, 4, 3, 2);

void setup() {
  Serial.begin (9600);
  pinMode(trigPin, OUTPUT);
  pinMode(echoPin, INPUT);
  pinMode(powerPin, OUTPUT);
  pinMode(groundPin, INPUT);
  lcd.begin(16, 2);
}

void loop() {
  digitalWrite(powerPin, HIGH);
  float duration, distance;
  digitalWrite(trigPin, LOW);
  delayMicroseconds(2);

  digitalWrite(trigPin, HIGH);
  delayMicroseconds(10);
  digitalWrite(trigPin, LOW);

  duration = pulseIn(echoPin, HIGH);
  distance = (duration / 2) * 0.0344;

  if (distance >= 400 || distance <= 2) {
    lcd.print("ERR");
  }
  else {
    lcd.print("Distance = " && distance);
    delay(500);
  }
  delay(500);
}
2

Do we have to guess the error message?
This?lcd.print("Distance = " && distance);?

(Using pin zero is not a great idea - the serial interface has dibs)

3

Aside from the error that wasn't posted, this line may not do what you expect:

delayMicroseconds(2);

Notes and Warnings
This function works very accurately in the range 3 microseconds and up. We cannot assure that delayMicroseconds will perform precisely for smaller delay-times.

4

there was no error message

5

Try this change

  else {
    lcd.print("Distance = " && distance);
    delay(500);
  }

to

  else {
    lcd.print("Distance = ");
delay(500);
        lcd.print (distance);
    delay(500);
  }
6

Your code happily compiles on my system for a Nano. No "exit status 1" message.

7

alecjensen:
i did a project and this showed. help please?

#include <LiquidCrystal.h>

#define trigPin 1
#define echoPin 2
#define powerPin 0
#define groundPin 3

LiquidCrystal lcd(12, 11, 5, 4, 3, 2);

void setup() {
 Serial.begin (9600);
 pinMode(trigPin, OUTPUT);
 pinMode(echoPin, INPUT);
 pinMode(powerPin, OUTPUT);
 pinMode(groundPin, INPUT);
 lcd.begin(16, 2);
}

If you are going to power the ultrasonic range sensor through Pin 0 and Pin 3 you should set both pins to OUTPUT, then set the Power pin to HIGH and the Ground pin to LOW.