SV: [basicstamps] Would like opinion on best method for user to u pdate EEPROM
Archiver
Posts: 46,084
Greetings!
> I have an application using the BS2p where info is stored in the
> EEPROM. I want to give the user the ability to update this info once
> a year. I have been trying to think of the best way to do this.
> I was thinking about using the Dallas 1 wire USB device, because
> it is a small connector, and send the info to the stamp over USB.
I'm not certain exactly HOW you want to use this device, but...
The 1-Wire USB device is a MASTER port for use on a PC.
The BS2p DO have 1-wire commands(I'm working with them myself), but it too
can only act as a MASTER.
The 1-Wire network is a strict Master/Slave network, so you cannot connect
these two directly.
What you could look at is a 1-wire chip, fill it with the updated data, then
move it to the BS2p based device and do a read of the contents there.
You could use a iButton, or even one of the TO35 / TO92 shaped 1-Wire
EEPROMs...
(The TO35 package is REALLY small :-)
That way you would only need a 3pin row of connectors, about .3" long and
.1" wide.
But don't forget that you're NOT forced to use the clunky DB9 connectors if
you instead decide on a RS232 port.
A simple row of pins, like a jumper block on a PC motherboard can do.
Or even a 'mini jack' plug...
(You just need to supply an adapter cable)
:-)
Trygve
http://home.c2i.net/trygveh/english/
> I have an application using the BS2p where info is stored in the
> EEPROM. I want to give the user the ability to update this info once
> a year. I have been trying to think of the best way to do this.
> I was thinking about using the Dallas 1 wire USB device, because
> it is a small connector, and send the info to the stamp over USB.
I'm not certain exactly HOW you want to use this device, but...
The 1-Wire USB device is a MASTER port for use on a PC.
The BS2p DO have 1-wire commands(I'm working with them myself), but it too
can only act as a MASTER.
The 1-Wire network is a strict Master/Slave network, so you cannot connect
these two directly.
What you could look at is a 1-wire chip, fill it with the updated data, then
move it to the BS2p based device and do a read of the contents there.
You could use a iButton, or even one of the TO35 / TO92 shaped 1-Wire
EEPROMs...
(The TO35 package is REALLY small :-)
That way you would only need a 3pin row of connectors, about .3" long and
.1" wide.
But don't forget that you're NOT forced to use the clunky DB9 connectors if
you instead decide on a RS232 port.
A simple row of pins, like a jumper block on a PC motherboard can do.
Or even a 'mini jack' plug...
(You just need to supply an adapter cable)
:-)
Trygve
http://home.c2i.net/trygveh/english/
Comments
wrote:
> Greetings!
>
> > I have an application using the BS2p where info is stored in the
> > EEPROM. I want to give the user the ability to update this info
once
> > a year. I have been trying to think of the best way to do this.
>
> > I was thinking about using the Dallas 1 wire USB device, because
> > it is a small connector, and send the info to the stamp over USB.
>
> I'm not certain exactly HOW you want to use this device, but...
> The 1-Wire USB device is a MASTER port for use on a PC.
> The BS2p DO have 1-wire commands(I'm working with them myself), but
it too
> can only act as a MASTER.
> The 1-Wire network is a strict Master/Slave network, so you cannot
connect
> these two directly.
>
> What you could look at is a 1-wire chip, fill it with the updated
data, then
> move it to the BS2p based device and do a read of the contents
there.
>
> You could use a iButton, or even one of the TO35 / TO92 shaped 1-
Wire
> EEPROMs...
> (The TO35 package is REALLY small :-)
> That way you would only need a 3pin row of connectors, about .3"
long and
> .1" wide.
>
> But don't forget that you're NOT forced to use the clunky DB9
connectors if
> you instead decide on a RS232 port.
> A simple row of pins, like a jumper block on a PC motherboard can
do.
> Or even a 'mini jack' plug...
> (You just need to supply an adapter cable)
>
> :-)
> Trygve
> http://home.c2i.net/trygveh/english/
Dude, thanks man. I think I like the i-button idea. I had never
looked at those before. They are slick and cheap. I can load info on
it, send it to the user, they load it in the device, and my code will
download the info, and they can throw it away, or what ever.
Cool
Encinoman