AVR-Chat

This doesn't really answer your question, but have you thought of not using
the HW SPI and just bit banging the stuff you need for your startup?


-----Original Message-----
From: AVR-Chat@yahoogroups.com [mailto:AVR-Chat@yahoogroups.com] On Behalf
Of Jeff Blaine
Sent: Sunday, August 08, 2010 7:42 PM
To: AVR-Chat@yahoogroups.com
Subject: [AVR-Chat] disable SPI? Mega162

My SPI is working fine.  But I just want to use it for part of a startup
routeene.  And then disable it so that the MOSI line is available for other
uses.  

I did not see anything in the data sheet preventing this but that blasted
MOSI line wants to stay high even after I disable the SPI via setting SPE=0.

Wondered if there is some other "trick" to turning the SPI module off.  Or
maybe it's on until reset, once initalized?

I must be overlooking something simple.  Seems setting SPE low should
disable the SPI.  And designating MOSI as an output should reenable it''s
use as a standard I/O pin...

73/jeff/ac0c
www.ac0c.com


[Non-text portions of this message have been removed]



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