The problem isn't technical -- Louis Swart does it (PIC based) in his LCD
controller.
Dallas/Maxim restricts 1-wire slaves (their patents, intellectual property,
and "quality assurance"), while making bus master design freely available
and unrestricted. I think it's a poor business decision, limitting their
market, mindshare, etc, but they seem to have the right.
The DS2408 can also talk to a microprocessor a byte at a time, with a strobe
line to coordinate data transfer. We'd have to do some additions to OWFS to
support that mode, but it's quite doable.
Paul Alfille
On 4/21/07, njh <[EMAIL PROTECTED]> wrote:
Perhaps a little off topic...
Has anyone come up with a simple way to make slave 1-wire devices usings
say a PIC? I'm looking for a way to attach a microcontroller to a OW
network.
My original plan was to use the DS2404 as a parameter ram that would be
read by a PIC at bootup and on interrupt. It seemed a simple and elegant
solution. However, I have 4 samples and the chip is no longer available.
My ideal solution would be a combined slave and master, where the
microntroller could be written to as a slave, but also acted like a
switchable hub so that the PIC could read 1-wire sensors daisychained off
it and these sensors could also be read directly from a PC.
njh
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