AVR-Chat

Isn't SPI a way to connect a pc to a MCU to program it. IF so I am using
a 6 foot cable for that.



-----Original Message-----
From: Leon Heller [mailto:leon.heller@dsl.pipex.com] 
Sent: Wednesday, November 24, 2004 5:08 AM
To: AVR-Chat@yahoogroups.com
Subject: Re: [AVR-Chat] Any general length considerations for SPI
busses?



----- Original Message ----- 
From: James Washer
To: AVR-Chat@yahoogroups.com
Sent: Wednesday, November 24, 2004 6:44 AM
Subject: [AVR-Chat] Any general length considerations for SPI busses?


A friend and I are working on a system that will need a few "remote"
devices 
(ADC, Temp sensors, etc) and are trying to determine just how long a 
wire/bus we can use with SPI. Is 20 feet reasonable?

You might be able to get it to work, but SPI is really intended for 
communication between devices on the same PCB. I'd give each device it's
own 
MCU and use some sort of low-cost networking scheme.

Leon
--
Leon Heller, G1HSM
http://www.geocities.com/leon_heller
http://www.kasamba.com/viewExpert.asp?conMemID=105725&Catid=1111&banID=2
100 




 
Yahoo! Groups Links