Hello all,
I use Atmel Studio 6.2 + Visual Micro (latest version) + Arduino Nano 328
I get an error message when I compile this very simple code:
In the Arduino IDE I get no error!

#include "EEPROM.h"
int addr,data;

void setup(){
addr=1;
data=125;}

void loop(){
EEPROM.write(addr,data);}

The error Message is:                  
Compiling 'eepr' for 'Arduino Nano w/ ATmega328'
EEPROM.cpp.o:In function `EEPROMClass::write(int, unsigned char)'
EEPROM.cpp:undefined reference to `__eewr_byte_m328p'
Error creating .elf

The EEPROM function is the problem, even if I take a different library (EEPROMEX) the problem remains!
Is this a bug? What can I do ? 
Thanks for any help

Hi,
Yes, Visual Micro is pointing to Arduino 1.05 and I tested the code with this version. I will send the verbose error message with all the Project files via e-mail.
Thanks

For anyone else reading this post the reason for this problem is that the user has specified a different sketchbook folder in the arduino ide than in Visual Micro. 

It's best to leave the sketchbook folder empty until you understand what it does.

With arduino the sketch book folder also specifies the location of user libraries. 

Bionical has specified a sketch book folder of "z:\arduino" but also has an eeprom library in z:\arduino\libraries\eeprom.

So when he compiles with the arduino ide it finds the proper eeprom library and works but Visual Micro (correctly) finds a different eeprom library which in this case does not work for the selected hardware.

It is worth noting that an empty sketchbook folder in visual micro will detect the settings from the arduino ide. If you want to compare Visual Micro with Arduino you should ensure that both apps are configured the same way and the easiest way to do this is to leave the visual micro sketch book property empty. It will be less confusing this way.

Hi,

Thanks for the info. let's work with an empty sketch book folder so we use the same config as Arduino.

It's possible the eeprom lib is cached try click Build>clean Solution then compile.

If that fails look in the verbose build output to see where the eeprom lib is being compiled from?

Thanks

Thanks for all the info.

I am afraid that re-installing will not help. Any reason for a compiler error "should" be easily resolved (but I know it isn't in this case)

Now that we have the same config as the Arduino Ide please email a verbose build after clicking tools>build>clean solution.

The open the same sketch int he arduino ide, switch on "file>preferences>verbose compile" then run the compile and email the output .

The comparison of the two build outputs should show the difference.

Thanks

Oh, thanks for the update