1-wire support on gpio/parallel

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1-wire support on gpio/parallel

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angelo_d
Senior Contributor I

Hi all,

 

anyone have experience to read a temperature value from a Dallas 1-wire device using for example 1 wire of the coldfire parallel bus ?

I am using uclinux ona a MCF5307. There is a 1-wire driver but don't seems to be able to dialog through a parallel bus wire.

Is there anyone that have developed a bitbanging driver ?

 

 

many thanks

angelo

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TomE
Specialist II

Have you tried Google and Wikipedia?

 

It is easier if you use a serial-to-onewire converter or a serial port to drive the bus as detailed in:

 

    http://en.wikipedia.org/wiki/1-Wire

 

Have you followed all the other links there?

 

For Linux software, OWFS, (but it probably assumes the external converter):

 

    http://www.technotes.se/?p=26

 

 

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