NAME

       avra - Assembler for the Atmel AVR microcontroller family

SYNOPSIS

       avra [-f] [O|M|I|G] output file type
             [-o outfile] output file name
             [-l listfile] generate list file
             [-m mapfile] generate map file
             [--define symbol[=value]] [--includepath path] [-listmac]
             [--max_errors number] [--devices] [--version]
             [-h] [--help] general help
             infile

DESCRIPTION

       AVRA  is  an  assembler  for  Atmel  AVR  microcontrollers,  and it is almost compatible with Atmel's own
       assembler AVRASM32.  The differences between the two are:

       Support for some extra preprocessor directives.
              includes: .define, .undef, .ifdef, .ifndef, .if, .else, .endif, .elif, .elseif, .warning

       Not all command line options are supported.
              Specifying an eeprom file (-e) is not supported. All eeprom data is put out  into  a  file  called
              program.eep.hex  and  always Intel hex format. Other hex file formats than Intel are currently not
              supported.

       Forward references are not supported.
              Like in C, you have to define everything before you are using it,  excepting  labels.  This  makes
              sure,  that directives like .ifdef and .undef are working properly. If you are familiar with the C
              programming language, you should get easily into AVRA. See chapter  "Programming  techniques"  for
              more information about how to write proper code.

       Enhanced macro support.
              AVRA  has some new features for writing flexible macros. This should increase the ability to reuse
              code e.g. build your own library.

       Debugging support.
              AVRA creates a coff file everytime the assembly was sucessful. This file allows AVR Studio or  any
              coff compatible debugger to simulate or emulate the program.

       Meta tags for assembly time.
              This  helps  you  tracking  versions  of  your  software and can also be used to generate customer
              specific serial numbers.

OPTIONS

       Several option can be given after one '-', but if an option requires an argument; the  argument  must  be
       given after that option.

       --listfile, -l
              Create list file

       --mapfile, -m
              Create map file

       --define, -D
              Define symbol.

       --includepath, -I
              Additional include paths.

       --listmac
              List macro expansion in listfile.

       --max_errors
              Maximum number of errors before exit (default: 10)

       --devices
              List out supported devices.

       --version
              Version information.

       --help, -h
              Show summary of options.

SEE ALSO

       avrp(1)

AUTHOR

       The initial version of AVRA was written by John Anders Haugum. He released all versions until v0.7. Later
       versions were released by Tobias Weber. Version 1.3.0 was released by Jerry Jacobs.

Atmel AVR Assembler                                May 8, 2010                                           avra(1)