AVR development in Linux

Install necessary packages 

    $ sudo apt-get install gcc-avr

    $ sudo apt-get install avr-libc

    $ sudo apt-get install avrdude

Sample code

 #include
 void main()
 {

 }

Compiling code

   $ avr-gcc -Os -mmcu=$2 file_name.c -o file_name.elf
   $ avr-objcopy -j .text -O ihex file_name.elf file_name.hex

Uploading code

    $ sudo avrdude -p part_name -c programmer_id \

    >-U flash:w:file_name.hex

           + part_name => m16, m8
           + prog_id => usbasp
    + "flash" => programs flash
           + "w" => write mode 
  + shld be run as super user => "sudo" 

Compiler optimization

   specify an option -Ox while compiling (avr-gcc -Ox ... )
  + x => optimization levels
  + "-Os" => "s"=> small - for smaller code

 Made a video of LED blinking @ 900ms  

FUSE BITS:

 # read  

    $ avrdude -p m16 -c usbasp -U fuse_name:r:file_name.txt:h

        

        + fuse_name => lfuse,hfuse,lock  

   + "r" => read

        + fuse value "h" in hex format

       + stored in file_name.txt file  

 # write

          $ avrdude -p m16 -c usbasp -U fuse_name:w:0x82:m

          

        + "0x82" => sample fuse value

        + "m" => immediate ( use value in cmd directly )  

 + "w" => write

 Note: make use of AVR fuse CALC available online