Re: [avrdude-dev] AVRDUDE and AT17LV

[Rudolf Matousek]

Brian Dean wrote:

> Not to say it could not be done, just that AVRDUDE is probably not the
> best program to use as a basis.  I think what you want is something
> that can program I2C memory.  Sounds like you could make a little AVR
> board that has a UART to interface to your PC, and an I2C interface to
> talk to your I2C memory part.  With a little programming on either
> side, you can send the data to be written out your serial port to the
> AVR chip which can then buffer it and send it on off to the device you
> wish to program using its the I2C interface.  I have code examples on
> my web site for the ATmega128 that can read and write to serial
> EEPROMs using the standard 24Cxxx I2C protocol.  Not sure if the
> device you are programming uses that method or not, but the code there
> might be helpful as a starting point.
>
>      http://www.bdmicro.com/code/
>
>  
There might be a problem. The FPSLIC AT94K does not have any internal 
nonvolatile memory that could be used to store the serial downloader 
program. The only nonvolatile memory is a on-board serial eeprom that is 
responsible to boot the device on power up. It stores not only the AVR 
program, but also a configuration bitstream that sets the behavior of 
the FPSLIC on-chip FPGA.

> Alternatively, there's bound to be some code and schematics out there
> to interface the PC parallel port to an I2C bus.  It shouldn't take
> much - maybe a buffer chip and a few resistors to use for pull-ups on
> the I2C bus.  After that it's just a small matter of the software :-)
>  
Actually, I've got such cable and I was looking for a tool that would do 
it for me. I'll probably write it one day, but up to that time, I'll use 
the windows utility provided by Atmel. :-(

Thanks for help,


Ruda M.