Most devices only report transmission errors, usually with a checksum failure. OWFS is fairly conservative and (after two repeats) reports as an INVALID. Depending on the access program, this will be reported appropriately. There are a few other errors like "no entry," "no such directory" and "out of range".
E.g: owhttpd will show an "invalid entry" owfs gives no return data owserver returns a negative number in the return code field etc... The temperature sensors are different because they have an "in band" error return -- 85C when the temperature cannot be read, and 85C when the temperature is 85C. To my memory, only the 85C is handled specially, otherwise we return whatever data the sensor gives and the Maxim datasheet is the best source of the sensor's expected function. On Mon, Mar 7, 2011 at 6:09 PM, Mick Sulley <[email protected]> wrote: > Hi, > > I was wondering if there is an equivalent to the 85 degree error value > for non-temperature devices, e.g. DS2406 i/o device? if so how does it > show up? > > Cheers > Mick > > > ------------------------------------------------------------------------------ > What You Don't Know About Data Connectivity CAN Hurt You > This paper provides an overview of data connectivity, details > its effect on application quality, and explores various alternative > solutions. http://p.sf.net/sfu/progress-d2d > _______________________________________________ > Owfs-developers mailing list > [email protected] > https://lists.sourceforge.net/lists/listinfo/owfs-developers > ------------------------------------------------------------------------------ What You Don't Know About Data Connectivity CAN Hurt You This paper provides an overview of data connectivity, details its effect on application quality, and explores various alternative solutions. http://p.sf.net/sfu/progress-d2d _______________________________________________ Owfs-developers mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/owfs-developers
