Rafael Esp?ndola wrote: >On Tue, 01 Feb 2005 07:45:55 -0800, Philip Pokorny ><ppokorny at penguincomputing.com> wrote: > > >>Yes, you should add the additional two bits of resolution. >> >> >Ok. I will take a look during the next weekend. > > This is similar to the ADM1027 which also has extended bits of resolution. Support for reading the extended bits exists in the 2.4 version of the lm85 driver (look for ADM1027_REG_EXTEND_ADC and related bits). Interestingly, the EMC6D102 does things a bit differently than the ADM1027. It actually offer *12* bits of resolution if the chip is running in x16 or x32 averaging mode. The 8-bit register must be read *first* before the LSB are read. It's the other way round on the ADM1027. It might make sense to change the "extend_adc" member to an array, and then have "lm85_update_client" function break the registers into the array members depending on if it's an ADM1027 or a EMC6D102. That way you can keep a single function to get the value in a way that adds in the extended bits. :v) -- Philip Pokorny, Director of Engineering Tel: 415-954-2823 Fax: 415-954-2899 Toll Free: 888-PENGUIN PENGUIN COMPUTING, INC. www.penguincomputing.com
