Parasite power is a great feature, but you will find benefits to power devices such as temp sensors to allow simultaneous conversion on more than four chips simultaneously. Also temp conversion is a time consuming operation that require to lock the bus if parasiticaly powered. Additionally, we usually use cat5 cables for 1-wire (moreover when long distance is needed), with eight wire, you have room to provide both signal and power. Pascal
-----Original Message----- From: Kassai Istvan <k...@zhnet.hu> Sent: jeudi 8 avril 2010 18:55 To: OWFS (One-wire file system) discussion and help <owfs-developers@lists.sourceforge.net> Subject: Re: [Owfs-developers] DS9097 and DS1825 thanks, it's now clear. I think if I use too much 1wire devices, the parasite powering won't be enough. (or they are far enough from the computer) In this case I must power them externally. Right? > >> For the first try. (with --8bit) >> I have only one short question: >> - If there are more than one 1wire devices on one bus, how will they >> appear in the mounted filesystem? >> actually it looks: /3B.CA8505000000 (addressed #0) >> does the addressed #1 will look like this? : /3B.CA8505000001 ??? >> >> > > Each 1-wire device has a unique 64 bit address. That is 16 hexidecimal > digits. The first 2 are the family code (all the same for DS1825) and > the last two are a CRC8 check sum. The middle 12 digits are the unique > part and will be different.. > > Paul Alfille > ------------------------------------------------------------------------------ Download Intel® Parallel Studio Eval Try the new software tools for yourself. Speed compiling, find bugs proactively, and fine-tune applications for parallel performance. See why Intel Parallel Studio got high marks during beta. http://p.sf.net/sfu/intel-sw-dev _______________________________________________ Owfs-developers mailing list Owfs-developers@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/owfs-developers ------------------------------------------------------------------------------ Download Intel® Parallel Studio Eval Try the new software tools for yourself. Speed compiling, find bugs proactively, and fine-tune applications for parallel performance. See why Intel Parallel Studio got high marks during beta. http://p.sf.net/sfu/intel-sw-dev _______________________________________________ Owfs-developers mailing list Owfs-developers@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/owfs-developers
