Avr Studio Error Undefined Reference
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Atmel Studio Add Files To Project
Thu. Apr 4, 2013 - 05:21 PM Fivestar widget 12345Total votes: 0 Hi all, I tried to build a simple UART code. I called HAL_UartInit() function from main.c and HAL_UartInit() is defined in another file hal_uart.c. I have added function prototype in header file hal_uart.h. I have added both files in project explorer. but why it is not getting definition of that function, I think its not linking properly. please help me, any suggestion would be helpful. Regards, shreyas. Tags:Tools, Atmel Studio (AVR-related) Log in / register to post comments Top clawson Level: Moderator Joined: Mon. Jul 18, 2005 Posts: 83329 View posts Location: (using avr-gcc in) Finchingfield, Essex, England #2 Posted by clawson: Thu. Apr 4, 2013 - 05:33 PM 12345Total votes: 0 Quote: I have added both files in project explorer. Well the error suggests that either the file that contains the function was not built/linked or that there's something in it (perhaps #if protection?) that prevents the body of the function in question being compiled. Log in or register to post comments Top JohanEkdahl Level: 10k+ Postman Joined: Wed. Mar 27, 2002 Posts: 24310 View posts Location: Lund, Sweden #3 Posted by JohanEkdahl: Thu. Apr 4, 2013 - 10:05 PM 12345Total votes: 0 You can start by copying all of the build output and paste it into a post here. "Ziggy really sang, screwed up eyes and screwed down hairdo. Like some cat from Japan, he could lick 'em by smiling. He could leave 'em to hang. He
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Support Search GitHub This repository Watch 63 Star 217 Fork 141 hexagon5un/AVR-Programming Code Issues 2 Pull requests 1 Projects 0 Wiki Pulse Graphs New issue Some code does not compile https://github.com/hexagon5un/AVR-Programming/issues/10 in Arduino IDE or Atmel Studio #10 Open PhillyNJ opened this Issue Jun 20, 2015 · 8 comments Projects None yet Labels None yet Milestone No milestone Assignees No one assigned 3 participants PhillyNJ http://forum.allaboutcircuits.com/threads/undefined-reference-in-avr-studio.33716/ commented Jun 20, 2015 Just a note, perhaps for the next edition of the book. The sample code provided in the book and this repo is for c only compilers (no C++ linkage) and undefined reference does not compile in Atmel Studio (c++ projects) or the Arduino IDE 1.6.X. The front page of this repo gives instructions on how to setup the Arduino IDE. The instructions are correct but some code does not compile, like the USART.h. With the help of the folks over at AVR Freaks, they pointed this out to me as I am not an expert in C or C++ (I c# atmel studio undefined by day). Their suggestion was to either add an extern c or rewrite the code in c++. I choose the later as it was great to learn. But I think you should let people know of the issue, because a large chunk of AVR programmers are newbies :) . Although your book does not say we need to use these IDEs/Compilers, most newbies use them. This is just a suggestion. I am an advocate of your book, and I am compelled to inform you. With that said, your book is outstanding and a create read. Owner hexagon5un commented Jun 30, 2015 Hey, thanks! Yeah, the code is in C. It won't work if you try to compile it in Turbo Pascal either. :) But that's strange about the Arduino IDE. My experience is that if you name the file something.c, it gets compiled with gcc, and if you name the file something.cpp, it gets compiled with g++. (And if you name it something.ino, it gets converted into something.cpp, and it gets hit with g++ again.) And I haven't used Studio in a dog's age, but I absolutely remember writing in straight C there too. In Arduino, were you using the default whatever.ino "ske
Forums Recent Posts Today's Posts 1Next > Feb 1, 2010 #1 myztic_man Thread Starter Member Apr 27, 2009 21 0 Hi there. I am trying to include a couple of .c files which I have already written for a previous project. #include "lib\gpslib.h" #include "lib\i2cmaster.h" #include "lib\usart.h" As they are sitting in the /lib folder relative to the primary .c file for the project. However, when I try to compile it gives the following error: C:\Users\vincent\Documents\AVR\Contiki\default/../Contiki.c:145: undefined reference to `i2c_start_wait' Where i2c_start_wait is a function defined within the i2cmaster.h and .s files. It also has a bunch of similar errors relating to other functions within i2cmaster.h, gpslib.h, and usart.h - it cannot find a single function within any of these /lib files for some reason. I have also tried including them through: #include