AVR Z-LINK®

Compiler information.

Overview

• Setup and Compile with IAR
• Setup and Compile with GCC
• Compiler References

The first step to compile the TAT into your application with either the IAR or GCC compiler is to make a new project folder and copy the lib and inc folders here. Pre configured project files can be found in the examples folder for reference.

Note:

In the reminder of this chapter it is assumed that you have AVR Studio and a valid copy of one of the two compilers installed.

Setup and Compile with IAR

• Open IAR Embedded Workbench. Select New Workspace.
• Then select the Project menu and Create New Project...
  • The Create New Project will be visible. Select AVR as Tool chain.
  • Choose the Empty project template and press OK.
  • Save the Workspace and Project file to your project directory (Same level as inc and lib).
• Select the Project menu again and Options. The Options window will be visible:
  • General Options:
    • Target tab: Processor configurations: Choose Processor configuration -cpu=m1281.
    • Library Configuration tab: Library to Normal DLIB.
    • System tab: Check the Enable bit definition... option.
  • C/C++ Compiler:
    • Preprocessor tab:
      • Additional include directories: write "$PROJ_DIR$\inc".
      • Defined symbols: Add "AVR" and "F_CPU=8000000UL".
  • Linker:
    • Output tab:
      • Format: select other and Output format to "ubrof 8 (forced)". Do not alter anything else.
    • Extra Options tab:
      • Check Use command line options and add "-C $PROJ_DIR$\lib\avr\iar\tat_lib.r90".
• Add the files in the src/avr to the project.
• Press F7 and verify that the code compiles without errors.

Setup and Compile with GCC

• Open AVRStudio, the Welcome to AVR Studio 4 screen will appear. Select New Project.
  • In the Create new Project screen:
    • Select AVR GCC as project type and type in a project name.
      • Browse into your project folder where you already have two folders (inc and lib).
      • Press next.
  • In the Select debug platform and device screen:
    • Select your Debug platform and ATmega1281 from the Device list.
    • Press Finish.
• In AVR Studio:
  • Select Project and Project Options from the drop down list.
  • General Tab:
    • Verify that Device is ATmega1281.
    • Set Frequency to 8000000 Hz.
    • Set Optimization to -Os.
    • Check Unsigned Chars, Unsigned Bitfields, PackStructure Members and Short Enums.
  • Include Directories Tab:
    • Add "inc" to the Include Search Path.
  • Libraries Tab:
    • Add "lib\avr\gcc" to the File Search Path.
    • Verify that the Available Link Objects list have a member called "lib_tat.a".
    • Select "libc.a" and "tat_lib.a" using the Add Library button.
    • Press OK.
• Select Project and Project Options again (Must be done to update the Custom Options List).
  • Custom Options Tab:
    • Add the following three options to your Custom Compilation Options window:
      • "-DAVR" press add.
  • Press OK.
• Add the files in the src to the project.
• Press F7 and verify that the code compiles.

Compiler References

• http://www.iar.com
• http://winavr.sourceforge.net