Why does exit status 1 stray '302円' in program pop up around Serial.println ( "-> Second Service load");? [duplicate]

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"stray '/302' in program error" when compiling (2 answers)

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/*
 Controlling a servo position using a potentiometer (variable resistor)
 by Michal Rinott <http://people.interaction-ivrea.it/m.rinott>
 modified on 8 Nov 2013
 by Scott Fitzgerald
 http://www.arduino.cc/en/Tutorial/Knob
*/
#include <Wire.h>
#include "ds3231.h"
#include <Servo.h>
int potpin = 0; // Analog pin is used to connect the potentiometer
int val; // Variable to read the value from the analog pin
int pause = 800; // Delay in open feeders (feed amount)
Servo myservo; // create servo object to control a servo
#define BUFF_MAX 256
// First Service
uint8_t wake_HOUR1 = 12;
uint8_t wake_MINUTE1 = 56;
uint8_t wake_SECOND1 = 0;
// Second Service
uint8_t wake_HOUR2 = 18;
uint8_t wake_MINUTE2 = 30;
// How often to update the information to the standard output (ms)
unsigned long prev = 5000, interval = 5000;
void setup() {
 myservo.attach(9); // attaches the servo on pin 9 to the servo object
 myservo.write (0); // Set the position to 0
 Serial.begin (9600);
 Wire.begin ();
 DS3231_init (DS3231_INTCN);
 DS3231_clear_a1f ();
 DS3231_clear_a2f ();
 set_alarm ();
}
void loop() 
{
 char buff [BUFF_MAX];
 unsigned long now = millis ();
 struct ts t;
 // Output through time (5000ms) The time and alarm clocks ustanovlennnye
 if ((now - prev> interval) && (Serial.available () <= 0)) {
  DS3231_get (& t);
  // Display current time
  snprintf (buff, BUFF_MAX, ".% d% 02d% 02d% 02d:.% 02d:% 02d", t.year,
       t.mon, t.mday, t.hour, t.min, t.sec);
  Serial.println (buff);
  // Display a1 debug info
  DS3231_get_a1 (& buff [0], 59);
  Serial.println (buff);
  DS3231_get_a2 (& buff [0], 59);
  Serial.println (buff);
  if (DS3231_triggered_a1 ()) {
   // INT has been pulled low
   Serial.println ( "-> First Service load");
 myservo.write(10); // sets the servo position according to the scaled value
 delay(1000); // waits for the servo to get there
 myservo.write(170); // sets the servo position according to the scaled value
 delay(1000); // waits for the servo to get there
   // Clear a1 alarm flag and let INT go into hi-z
   DS3231_clear_a1f ();
  }
  if (DS3231_triggered_a2 ()) {
   // INT has been pulled low
   Serial.println ( "-> Second Service load");
 myservo.write(10); // sets the servo position according to the scaled value
 delay(1000); // waits for the servo to get there
 myservo.write(170); // sets the servo position according to the scaled value
 delay(1000); 
}

• Edgar Bonet: Indent your code with ordinary spaces, not with no-break spaces.

Answer 1

As Gerben notes, the stackoverflow question error: stray '302円' in program is about this issue. Basically, your file contains one or more characters not valid in the current character set. The character is either non-printing or a multi-byte unicode character.

How did the character get there? Some of the ways mentioned in the stackoverflow question are pressing ctrl-space or shift-space.

How to find the character and get rid of it? You can look at output from hex-dumping the file, which will identify all characters definitively. Or by trial and error you can delete and retype spaces in the region of the error.

• Jasmine Parham: I retyped my code on a new sketch and it uploaded successfully but i tried to change the times to see if my RTC code uploaded accurately instead of just successfully I tried changing the numbers on wake hours and minutes and now i have a compiling error.
• James Waldby - jwpat7: The error message will have a line number that points you to (or near) the line causing an error. If the error is in one of the uint8_t wake_HOUR1 = 12; ... uint8_t wake_MINUTE2 = 30; lines, it probably is a simple typo, like an extra or missing character. Each of those lines should be of the form uint8_t somevariablename=somevalue; where somevalue should be an integer, like 0, 1, ... 7, 8, 9, 10, 11 ... 59. A value expressed as 08 or 09 instead of 8 or 9 would produce an error because 8 and 9 are not octal digits. A missing semicolon or no space after uint8_t also is an error.