EEPROM with USB interface

[amateur_24]

Hi
Is it possible to have a circuit with two buttons which write different values to an eeprom? The eeprom needs to be readable from Linux / windows XP (and above) as well. Ideally I went to cat the device node i.e. cat /dev/bus/usb/001/001 then the value in the eeprom will be outputted to the console.

 

[Pommie]

Yes, it's possible.

Mike.

 

[amateur_24]

Great. How do I go about implementing it? I'm assuming I connect a eeprom to a microcontroller. Connect the switches to the microcontroller then program it to write to eeprom right?

On a PC keyboard when a key is pressed two pins of the micro controller are connected together hence it knows what key was pressed right?

That's the theory but how do I actually do this? What do I need to know to do this? I only have rusty basic electronics knowledge from school.

I'm thinking of using I'm not sure what microcontroller to use. I heard the atmel AVR chips have integrated EEPROMs. I'm very little data so 64KB will be more then enough.

 

[3v0]

It sounds like you are trying to build some sort of data logger. Does it require time stamps. It would help if you were more specific.

 

[amateur_24]

No all it needs to do is store a number. Actually the eeprom could just be 1 byte big. I need an eeprom because it needs to be stored permanently and erased because it can change depending on which
button I pressed. I.e. one button tells grub to boot windows other tells it to boot linux. Ideally I should just be able to do cat /dev/bus/usb/001/001 then it will give me the value in the eeprom. If possible I like to stick to DIL socket style IC .