error message confusion

system · January 26, 2012, 2:25am

Hi all, I had Arduino IDE running on my netbook, but changed OS to Ubuntu. So I have reinstalled the Arduino IDE as per the instructions here - http://www.pluggy.me.uk/arduino-ubuntu/

Then I went through and reinstalled the libraries I was using, and finally tried to compile my (previously working) code.

It is not working. So I figured I would run some example code from each of the libraries to check each one works. So the first one is the MAX6675 library from http://ryanjmclaughlin.com/

When I run the example code from this I get the error message :- conflicting declaration 'int SCK' The rest of the error message is as follows:-

In file included from RBBB_PID_v1_1.cpp:4: /home/ross/Arduino/arduino-1.0/libraries/max6675/max6675.h:11:22: error: WProgram.h: No such file or directory In file included from RBBB_PID_v1_1.cpp:5: /home/ross/Arduino/arduino-1.0/libraries/MenuBackend/MenuBackend.h:195: error: stray ‘\342’ in program /home/ross/Arduino/arduino-1.0/libraries/MenuBackend/MenuBackend.h:195: error: stray ‘\200’ in program /home/ross/Arduino/arduino-1.0/libraries/MenuBackend/MenuBackend.h:195: error: stray ‘\250’ in program RBBB_PID_v1_1.cpp:6:20: error: PID_v1.h: No such file or directory In file included from RBBB_PID_v1_1.cpp:3: /home/ross/Arduino/arduino-1.0/libraries/LiquidCrystal_I2C/LiquidCrystal_I2C.h:80: error: conflicting return type specified for ‘virtual void LiquidCrystal_I2C::write(uint8_t)’ /home/ross/Arduino/arduino-1.0/hardware/arduino/cores/arduino/Print.h:48: error: overriding ‘virtual size_t Print::write(uint8_t)’ RBBB_PID_v1_1:10: error: conflicting declaration ‘int SCK’ /home/ross/Arduino/arduino-1.0/hardware/arduino/variants/standard/pins_arduino.h:43: error: ‘SCK’ has a previous declaration as ‘const uint8_t SCK’ RBBB_PID_v1_1:16: error: no matching function for call to ‘MAX6675::MAX6675(int&, int&, const uint8_t&, int&, float&)’ /home/ross/Arduino/arduino-1.0/libraries/max6675/max6675.h:16: note: candidates are: MAX6675::MAX6675(int, int, int, int) /home/ross/Arduino/arduino-1.0/libraries/max6675/max6675.h:14: note: MAX6675::MAX6675(const MAX6675&) RBBB_PID_v1_1:31: error: ‘PID’ does not name a type RBBB_PID_v1_1.cpp: In function ‘void setup()’: RBBB_PID_v1_1:148: error: ‘myPID’ was not declared in this scope RBBB_PID_v1_1:150: error: ‘AUTOMATIC’ was not declared in this scope RBBB_PID_v1_1.cpp: In function ‘void loop()’: RBBB_PID_v1_1:172: error: no matching function for call to ‘MAX6675::read_temp(int)’ /home/ross/Arduino/arduino-1.0/libraries/max6675/max6675.h:17: note: candidates are: float MAX6675::read_temp() RBBB_PID_v1_1:184: error: ‘myPID’ was not declared in this scope RBBB_PID_v1_1.cpp: In function ‘void menuChanged(MenuChangeEvent)’: RBBB_PID_v1_1:223: error: ‘myPID’ was not declared in this scope RBBB_PID_v1_1:237: error: ‘myPID’ was not declared in this scope RBBB_PID_v1_1:250: error: ‘myPID’ was not declared in this scope RBBB_PID_v1_1:334: error: ‘myPID’ was not declared in this scope RBBB_PID_v1_1:340: error: ‘myPID’ was not declared in this scope RBBB_PID_v1_1:346: error: ‘myPID’ was not declared in this scope RBBB_PID_v1_1:352: error: ‘myPID’ was not declared in this scope RBBB_PID_v1_1:358: error: ‘myPID’ was not declared in this scope RBBB_PID_v1_1:364: error: ‘myPID’ was not declared in this scope RBBB_PID_v1_1:370: error: ‘myPID’ was not declared in this scope RBBB_PID_v1_1:376: error: ‘myPID’ was not declared in this scope RBBB_PID_v1_1:382: error: ‘myPID’ was not declared in this scope RBBB_PID_v1_1:387: error: ‘myPID’ was not declared in this scope RBBB_PID_v1_1:394: error: ‘myPID’ was not declared in this scope RBBB_PID_v1_1:401: error: ‘myPID’ was not declared in this scope RBBB_PID_v1_1:408: error: ‘myPID’ was not declared in this scope RBBB_PID_v1_1:415: error: ‘myPID’ was not declared in this scope RBBB_PID_v1_1:422: error: ‘myPID’ was not declared in this scope RBBB_PID_v1_1:429: error: ‘myPID’ was not declared in this scope RBBB_PID_v1_1:436: error: ‘myPID’ was not declared in this scope RBBB_PID_v1_1:443: error: ‘myPID’ was not declared in this scope RBBB_PID_v1_1:450: error: ‘myPID’ was not declared in this scope RBBB_PID_v1_1:457: error: ‘myPID’ was not declared in this scope RBBB_PID_v1_1:465: error: ‘myPID’ was not declared in this scope RBBB_PID_v1_1:473: error: ‘myPID’ was not declared in this scope RBBB_PID_v1_1:480: error: ‘myPID’ was not declared in this scope RBBB_PID_v1_1:487: error: ‘myPID’ was not declared in this scope RBBB_PID_v1_1:494: error: ‘myPID’ was not declared in this scope RBBB_PID_v1_1:501: error: ‘myPID’ was not declared in this scope RBBB_PID_v1_1:508: error: ‘myPID’ was not declared in this scope RBBB_PID_v1_1:515: error: ‘myPID’ was not declared in this scope RBBB_PID_v1_1:522: error: ‘myPID’ was not declared in this scope RBBB_PID_v1_1:530: error: ‘myPID’ was not declared in this scope

Any suggestions?

system · January 26, 2012, 7:21am

That library needs updating for Arduino IDE 1.0. You have a number of options.

Go back to Arduino IDE 0022.
Get an updated library, if available.
Update the library yourself.

The WProgram.h file, which provides declarations for the Arduino API, has been renamed to Arduino.h. To create a library that will work in both Arduino 0022 and Arduino 1.0, you can use an #ifdef that checks for the ARDUINO constant, which was 22 and is now 100. For example:

if defined(ARDUINO) && ARDUINO >= 100

include "Arduino.h"

else

include "WProgram.h"

endif

Grumpy_Mike · January 26, 2012, 7:22am

WProgram.h: No such file or directory

is the clue The WProgram.h file, which provides declarations for the Arduino API, has been renamed to Arduino.h. http://arduino.cc/en/Main/ReleaseNotes.

system · January 26, 2012, 9:30pm

Thanks for your advice, I have now changed to Arduino 0022.

I am now having some difficulty getting my I2C LCD to work. I started with just adafruit’s max6675 library, got that working happily, but I can only send serial data to the terminal, I2C turns on the lcd screen for 3 sec, then it flashes about once a second.
Here is my code, any pointers?

// this example is public domain. enjoy!
// www.ladyada.net/learn/sensors/thermocouple
#include <Wire.h>
#include <LiquidCrystal_I2C.h>
#include "max6675.h"

int thermoDO = 11;
int thermoCS = 10;
int thermoCLK = 12;

MAX6675 thermocouple(thermoCLK, thermoCS, thermoDO);
LiquidCrystal_I2C lcd(0x27,16,2); // set the LCD address to 0x27 for a 16 chars and 2 line display

  
void setup() {
  Serial.begin(9600);
  lcd.init(); // initialize the lcd 
  lcd.backlight(); 
  lcd.setCursor(0,0);
  lcd.print("Arduino PID");
  lcd.setCursor(2,1); //Initial splash screen
  lcd.print("for espresso" );
  delay(3000);
  lcd.clear();  
  lcd.print("MAX6675 test");
  // wait for MAX chip to stabilize
  delay(500);
}

void loop() {
  // basic readout test, just print the current temp
  
   lcd.setCursor(0,0);
   lcd.print("C = "); 
   lcd.print(thermocouple.readCelsius());
   lcd.setCursor(0,0);
   lcd.print("F = ");
   lcd.print(thermocouple.readFarenheit());
 
   delay(1000);
}

system · January 27, 2012, 2:03am

Figured it out, when 0022 was complaining about no wire.h library, as I seemed to recall wire.h being a standard library. I tried 0018 & that fixed the problem.

system · May 5, 2021, 7:42pm