Issue with AtmelStudio: Code in Arduino IDE compiles, in AtmelStudio doesn't

Projects Programming
1

Hi,
today I've upgraded to AtmelStudio 6 with Arduino Extension. My own projects work great in there. Code browsing is much more easy, and digging into the libraries also.

But I have encountered one strange problem:
When I tried to compile the PCF8574 example from GitHub - skywodd/pcf8574_arduino_library: PCF8574 / PCF8575 Arduino library (version 2.0) it will work in the Arduino IDE but not in Studio.

IDE:

Compiling 'ButtonBlink' for 'Arduino Uno'
ButtonBlink.ino:16:9: error: no matching function for call to 'PCF8574::PCF8574()'
ButtonBlink.ino:candidates are
PCF8574.h:PCF8574(int)
PCF8574.h:candidate expects 1 argument, 0 provided
PCF8574.h:PCF8574(const PCF8574&)
PCF8574.h:candidate expects 1 argument, 0 provided
ButtonBlink.ino:In function 'void setup()'
ButtonBlink.ino:25:12: error: 'class PCF8574' has no member named 'begin'
ButtonBlink.ino:28:12: error: 'class PCF8574' has no member named 'pinMode'
ButtonBlink.ino:29:12: error: 'class PCF8574' has no member named 'pinMode'
ButtonBlink.ino:30:12: error: 'class PCF8574' has no member named 'pinMode'
ButtonBlink.ino:31:12: error: 'class PCF8574' has no member named 'pinMode'
ButtonBlink.ino:34:12: error: 'class PCF8574' has no member named 'enableInterrupt'
ButtonBlink.ino:37:12: error: 'class PCF8574' has no member named 'attachInterrupt'
ButtonBlink.ino:38:12: error: 'class PCF8574' has no member named 'digitalWrite'
ButtonBlink.ino:In function 'void ISRgateway()'
ButtonBlink.ino:43:12: error: 'class PCF8574' has no member named 'checkForInterrupt'
ButtonBlink.ino:In function 'void ISRdemo()'
ButtonBlink.ino:53:19: error: no matching function for call to 'PCF8574::toggle()'
ButtonBlink.ino:candidate is
PCF8574.h:toggle(uint8_t)
PCF8574.h:candidate expects 1 argument, 0 provided
ButtonBlink.ino:In function 'void loop()'
ButtonBlink.ino:63:12: error: 'class PCF8574' has no member named 'blink'
ButtonBlink.ino:65:12: error: 'class PCF8574' has no member named 'blink'
ButtonBlink.ino:69:12: error: 'class PCF8574' has no member named 'digitalWrite'
ButtonBlink.ino:71:12: error: 'class PCF8574' has no member named 'digitalWrite'
ButtonBlink.ino:73:12: error: 'class PCF8574' has no member named 'digitalWrite'
ButtonBlink.ino:75:12: error: 'class PCF8574' has no member named 'digitalWrite'
ButtonBlink.ino:93:12: error: 'class PCF8574' has no member named 'detachInterrupt'
ButtonBlink.ino:95:27: error: 'class PCF8574' has no member named 'digitalRead'
ButtonBlink.ino:96:32: error: no matching function for call to 'PCF8574::read()'
ButtonBlink.ino:candidate is
PCF8574.h:read(uint8_t)
PCF8574.h:candidate expects 1 argument, 0 provided
ButtonBlink.ino:97:12: error: 'class PCF8574' has no member named 'attachInterrupt'
Error compiling

In No. 16 the instance should be created:

PCF8574 expander;

Here is minimal code that should work (works in A-IDE) if you install the library:

#include <Wire.h>    // Required for I2C communication
#include "PCF8574.h" // Required for PCF8574

PCF8574 expander;

void setup() {
  expander.begin(0x20);
}

void loop() {
}

Again Atmel Studio complains:

Compiling 'ButtonBlink' for 'Arduino Uno'
ButtonBlink.ino:4:9: error: no matching function for call to 'PCF8574::PCF8574()'
ButtonBlink.ino:candidates are
PCF8574.h:PCF8574(int)
PCF8574.h:candidate expects 1 argument, 0 provided
PCF8574.h:PCF8574(const PCF8574&)
PCF8574.h:candidate expects 1 argument, 0 provided
ButtonBlink.ino:In function 'void setup()'
ButtonBlink.ino:7:12: error: 'class PCF8574' has no member named 'begin'
Error compiling

I appreciate any help...
Matthias

Edit: Quick link to the library:

2

it will work in the Arduino IDE but not in Studio.

What did they say at the AtmelStudio forum?

3

I didn't ask there... Aren't questions regarding other software welcome to this forum?

I've solved the problem by commenting the interrupt function out. I don't know why, but now it works.

Thanks,
Matthias

4

I have no idea what you mean by "Arduino extension", but if you install the (free) VisualMicro plug-in from visualmicro.com, ALL Arduino programs will build correctly in Atmel Studio.

Regards,
Ray L.

5

Mettwurstbrot:
I didn't ask there... Aren't questions regarding other software welcome to this forum?

It's not that they're not welcome, it's just if I had a problem with some software, my first thought would be "I'll ask the people who wrote/support that software, not some other unconnected group".
But maybe that's just me.

6

Are they the identical library? It looks like the constructor is expecting an int argument and not getting it.

7

See: Arduino Playground - PCF8574Class

Example code:

#include "PCF8574.h"
#include <Wire.h>

// adjust addresses if needed
PCF8574 PCF_38(0x38);  // add switches to lines  (used as input)
PCF8574 PCF_39(0x39);  // add leds to lines      (used as output)

Constructor is taking an argument.

In the library code:

class PCF8574
{
  public:
  PCF8574(int address);

Constructor needs an int.

8

However the GitHub code you linked is different:

class PCF8574 {
public:
	/**
	 * Create a new PCF8574 instance
	 */
	PCF8574();

Constructor does not take an int.

My conclusion: You have two different copies of the library.

9

Thanks a lot for the hints and help. I've reinstalled the library and everything works. I will try to find the real issue tomorrow... Yes it is the Plugin from visual Micro.

Best,
Matthias