NAME

       using_avrprogUsing the avrdude program
        -

       Note:
           This section was contributed by Brian Dean [ bsd@bsdhome.com ].

           The avrdude program was previously called avrprog. The name was changed to avoid confusion with the
           avrprog program that Atmel ships with AvrStudio.

       avrdude is a program that is used to update or read the flash and EEPROM memories of Atmel AVR
       microcontrollers on FreeBSD Unix. It supports the Atmel serial programming protocol using the PC's
       parallel port and can upload either a raw binary file or an Intel Hex format file. It can also be used in
       an interactive mode to individually update EEPROM cells, fuse bits, and/or lock bits (if their access is
       supported by the Atmel serial programming protocol.) The main flash instruction memory of the AVR can
       also be programmed in interactive mode, however this is not very useful because one can only turn bits
       off. The only way to turn flash bits on is to erase the entire memory (using avrdude's -e option).

       avrdude is part of the FreeBSD ports system. To install it, simply do the following:

       # cd /usr/ports/devel/avrdude
       # make install

       Once installed, avrdude can program processors using the contents of the .hex file specified on the
       command line. In this example, the file main.hex is burned into the flash memory:

       # avrdude -p 2313 -e -m flash -i main.hex

       avrdude: AVR device initialized and ready to accept instructions

       avrdude: Device signature = 0x1e9101

       avrdude: erasing chip
       avrdude: done.
       avrdude: reading input file "main.hex"
       avrdude: input file main.hex auto detected as Intel Hex

       avrdude: writing flash:
       1749 0x00
       avrdude: 1750 bytes of flash written
       avrdude: verifying flash memory against main.hex:
       avrdude: reading on-chip flash data:
       1749  0x00
       avrdude: verifying ...
       avrdude: 1750 bytes of flash verified

       avrdude done.  Thank you.

       The -p 2313 option lets avrdude know that we are operating on an AT90S2313 chip. This option specifies
       the device id and is matched up with the device of the same id in avrdude's configuration file (
       /usr/local/etc/avrdude.conf ). To list valid parts, specify the -v option. The -e option instructs
       avrdude to perform a chip-erase before programming; this is almost always necessary before programming
       the flash. The -m flash option indicates that we want to upload data into the flash memory, while -i
       main.hex specifies the name of the input file.

       The EEPROM is uploaded in the same way, the only difference is that you would use -m eeprom instead of -m
       flash.

       To use interactive mode, use the -t option:

       # avrdude -p 2313 -t
       avrdude: AVR device initialized and ready to accept instructions
       avrdude: Device signature = 0x1e9101
       avrdude>

       The '?' command displays a list of valid
       commands:

       avrdude> ?
       >>> ?
       Valid commands:

         dump   : dump memory  : dump <memtype> <addr> <N-Bytes>
         read   : alias for dump
         write  : write memory : write <memtype> <addr> <b1> <b2> ... <bN>
         erase  : perform a chip erase
         sig    : display device signature bytes
         part   : display the current part information
         send   : send a raw command : send <b1> <b2> <b3> <b4>
         help   : help
         ?      : help
         quit   : quit

       Use the 'part' command to display valid memory types for use with the

       avrdude>