Bernhard Rieder wrote: > Hi Everybody, > > I am currently working on an ADT746[78] driver which will be finished soon. > > However, I am not sure how to react to errors. Which values do I return in case > the chip reports errors (i.e. temp=-64 is an error value for the temperature reading, > -63 is ok). Are there somewhere error values defined which can used for this? I do > not think usinf -64 is a good choice, because the chip has two modes for temperature > and an error would be reported as -128 in the other mode. Additionally, -64 could be > interpreted as a real value (at least in sibiria when it is a cold winter day). > To report errors we have a separate sysfs attribute called temp#_fault, I think you want to implement that and have it return 1 when read when the temp is -64/-128 (normally it should read as 0). For temp#_input you can just return the temp even if it is an error, apps should ignore the reading from temp#_input when temp#_fault reads 1. Regards, Hans
