Coding Help

robolink_carl

A user needed help with the following as it was returning errors:

#include <SmartInventor.h>
int a = 0;
int b = 1 / a;
void setup() {
  // put your setup code here, to run once:
  Serial.begin(57600);
  SmartInventor.DCMotorUse();
  int left = anologRead(19);
}

void loop() {
  // put your main code here, to run repeatedly:

  while (a < 10) {
    a = a + 1;
    b = a * a + a;
    Serial.println(a);
    Serial.println(b); Serial.println("test");
    delay(1000);
    if (Serial.available() > 0) {
      Serial.println((char)Serial.read());
    }
  }; 
  
  for (int c = 0; c < 10; c++) {
    Serial.println(c);
    delay(1000);
    SmartInventor.DCMotor(M1, CCW, 100);
  }

  while (left < 500) {
    Serial.println(left);
    SmartInventor.DCMotor(M1, CCW, 100);
  }
  SmartInventor.DCMotor(M1, CW, 1000);
  Serial.println("end");
  SmartInventor.DCMotor(M1, STOP, 10);
  delay(5000);
}

robolink_carl

@efraim-fleisher

robolink_carl

The following is the code corrected

#include <SmartInventor.h>
int a = 0;
int b = 1 / a;
  int LEDPIN11 = 11;
  int LEDPIN12 = 12;
  int LEDPIN13 = 13;
  int LEDPIN14 = 14;
  int LEDPIN15 = 15;
  int LEDPIN16 = 16;
  int LEDPIN17 = 17;
  int LEDPIN18 = 18;
  
void setup()
{
  // put your setup code here, to run once:
  Serial.begin(57600);
  SmartInventor.DCMotorUse();

  pinMode(LEDPIN11, OUTPUT);
  pinMode(LEDPIN12, OUTPUT);
  pinMode(LEDPIN13, OUTPUT);
  pinMode(LEDPIN14, OUTPUT);
  pinMode(LEDPIN15, OUTPUT);
  pinMode(LEDPIN16, OUTPUT);
  pinMode(LEDPIN17, OUTPUT);
  pinMode(LEDPIN18, OUTPUT);
}

void loop()
{
  // put your main code here, to run repeatedly:
  int leftsensor = 600;
  while (a < 10) {
    a = a + 1;
    b = a * a + a;
    Serial.println(a);
    Serial.println(b); Serial.println("test");
    delay(1000);
    if (Serial.available() > 0) {
      Serial.println((char)Serial.read());
    }
  };
  for (int c = 0; c < 10; c++) {
    Serial.println(c);
    delay(1000);
    SmartInventor.DCMotor(M1, CCW, 100);
  }

  while (leftsensor > 500) {
    leftsensor = analogRead(19);
    Serial.println("left");
    SmartInventor.DCMotor(M1, CCW, 100);
    delay(1000);
  }

  //sets the LED state to HIGH
  digitalWrite(LEDPIN11, HIGH);
  digitalWrite(LEDPIN12, HIGH);
  digitalWrite(LEDPIN13, HIGH);
  digitalWrite(LEDPIN14, HIGH);
  digitalWrite(LEDPIN15, HIGH);
  digitalWrite(LEDPIN16, HIGH);
  digitalWrite(LEDPIN17, HIGH);
  digitalWrite(LEDPIN18, HIGH);
  delay(1000);

  //sets the LED state to LOW
  digitalWrite(LEDPIN11, LOW);
  digitalWrite(LEDPIN12, LOW);
  digitalWrite(LEDPIN13, LOW);
  digitalWrite(LEDPIN14, LOW);
  digitalWrite(LEDPIN15, LOW);
  digitalWrite(LEDPIN16, LOW);
  digitalWrite(LEDPIN17, LOW);
  digitalWrite(LEDPIN18, LOW);
  delay(1000);

  delay(1000);

  SmartInventor.DCMotor(M1, CW, 1000);
  Serial.println("end");
  SmartInventor.Buzz(500, 8);
  SmartInventor.DCMotor(M1, STOP, 10);
  delay(5000);
}

robolink_carl

A user had an issue with the following code:

#include <SmartInventor.h>
int a = 0;
int b = 1 / a;
void setup()
{
  // put your setup code here, to run once:
  Serial.begin(57600);
  SmartInventor.DCMotorUse();
  int LEDPIN11 = 11;
  int LEDPIN12 = 12;
  int LEDPIN13 = 13;
  int LEDPIN14 = 14;
  int LEDPIN15 = 15;
  int LEDPIN16 = 16;
  int LEDPIN17 = 17;
  int LEDPIN18 = 18;
  pinMode(LEDPIN11, OUTPUT);
  pinMode(LEDPIN12, OUTPUT);
  pinMode(LEDPIN13, OUTPUT);
  pinMode(LEDPIN14, OUTPUT);
  pinMode(LEDPIN15, OUTPUT);
  pinMode(LEDPIN16, OUTPUT);
  pinMode(LEDPIN17, OUTPUT);
  pinMode(LEDPIN18, OUTPUT);
}

void loop()
{
  // put your main code here, to run repeatedly:
  int leftsensor = 600;
  while (a < 10) {
    a = a + 1;
    b = a * a + a;
    Serial.println(a);
    Serial.println(b); Serial.println("test");
    delay(1000);
    if (Serial.available() > 0) {
      Serial.println((char)Serial.read());
    }
  }; for (int c = 0; c < 10; c++) {
    Serial.println(c);
    delay(1000);
    SmartInventor.DCMotor(M1, CCW, 100);
  }

  while (leftsensor > 500) {
    leftsensor = analogRead(19);
    Serial.println("left");
    SmartInventor.DCMotor(M1, CCW, 100);
    delay(1000);
  }

  //declares global variables used in the code
  int LEDPIN11 = 11;
  int LEDPIN12 = 12;
  int LEDPIN13 = 13;
  int LEDPIN14 = 14;
  int LEDPIN15 = 15;
  int LEDPIN16 = 16;
  int LEDPIN17 = 17;
  int LEDPIN18 = 18;

  void setup() {

    pinMode(LEDPIN11, OUTPUT);
    pinMode(LEDPIN12, OUTPUT);
    pinMode(LEDPIN13, OUTPUT);
    pinMode(LEDPIN14, OUTPUT);
    pinMode(LEDPIN15, OUTPUT);
    pinMode(LEDPIN16, OUTPUT);
    pinMode(LEDPIN17, OUTPUT);
    pinMode(LEDPIN18, OUTPUT);
  }

  void loop() {

    //sets the LED state to HIGH
    digitalWrite(LEDPIN11, HIGH);
    digitalWrite(LEDPIN12, HIGH);
    digitalWrite(LEDPIN13, HIGH);
    digitalWrite(LEDPIN14, HIGH);
    digitalWrite(LEDPIN15, HIGH);
    digitalWrite(LEDPIN16, HIGH);
    digitalWrite(LEDPIN17, HIGH);
    digitalWrite(LEDPIN18, HIGH);
    delay(1000);

    //sets the LED state to LOW
    digitalWrite(LEDPIN11, LOW);
    digitalWrite(LEDPIN12, LOW);
    digitalWrite(LEDPIN13, LOW);
    digitalWrite(LEDPIN14, LOW);
    digitalWrite(LEDPIN15, LOW);
    digitalWrite(LEDPIN16, LOW);
    digitalWrite(LEDPIN17, LOW);
    digitalWrite(LEDPIN18, LOW);
    delay(1000);
  }

  delay(1000);

  SmartInventor.DCMotor(M1, CW, 1000);
  Serial.println("end");
  SmartInventor.Buzz(500, 8);
  SmartInventor.DCMotor(M1, STOP, 10);
  delay(5000);
}

Please note that you are only able to have "1" void setup, and 1 void loop method.

robolink_carl

The solution to this error is as follows:

The problem regarding this error, is actually that the code declares a variable "int left". This cannot be used as the library <SmartInventor.h> uses this variable already. As a result the user has to rename the variable so that the code can function. something like left_ir_sensor or l_sensor will suffice/not interfere with the library that the user has added.