On 07/14/2012 09:57 AM, Paul Alfille wrote: > The support for the MAX31826 is complete, except I've run into a snag:
Thanks for the fast work on this! > The MAX31826 has 12-bit resolution and 128byte of memory > The DS1825 has 9-12 bit resolution and temperature alarm limits and no > memory > > Both have family code 3B and both have the adjustable address. Hmmm... yeah, I hadn't noticed that. I wonder why they didn't just change the family code. > The MAX31826 is much faster reading full resolution temperatures > (150msec vs >750msec) That will be nice! > I wonder if there is a way to tell by the chip ID range, but I have no > information. I have a support email into Maxim submitted. I am guessing the answer will be no :( Without having any real knowledge of the inner workings of 1-wire, what happens when you read bits 5 and 6 of the configuration register of the MAX31826? The documentation simply says "-" for those bits, but they must return some value when read. If they always return the _same_ value (hopefully 1's for backward compatibility) then it may be possible to test for a MAX31826 by writing something else there and then reading it back and see of the values changed. That is kind of ugly but it it works would at least be easy to implement. Jeff ------------------------------------------------------------------------------ Live Security Virtual Conference Exclusive live event will cover all the ways today's security and threat landscape has changed and how IT managers can respond. Discussions will include endpoint security, mobile security and the latest in malware threats. http://www.accelacomm.com/jaw/sfrnl04242012/114/50122263/ _______________________________________________ Owfs-developers mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/owfs-developers
