topic Re: 1-wire support on gpio/parallel in ColdFire/68K Microcontrollers and Processors

1-wire support on gpio/parallel

angelo_d — Sat, 08 Jan 2011 20:54:17 GMT

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

TomE — Tue, 11 Jan 2011 09:50:30 GMT

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:

Have you followed all the other links there?

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