Am 10.03.19 um 19:46 schrieb Mick Sulley:
> OK, but looking through Jan's checklist again -
>
> * power all sensors
> * set the sensor EEPROM to 9 bit default resolution.
>
> ?? How to do that? Is it just a read temperature9 on DS18B20?
> With recent OWFS, you simply write 9 to the sensor's tempres node.
> Then, the readout thread is as follows:
>
> 1. trigger a 12-bit resolution conversion on each sensor for
> initialization.
> 2. write something to /simultaneous/temperature to trigger all
> temperature conversions at the same time.
> 3. wait a second
> 4. read /uncached/<sensorid>/latesttemp of each sensor
> 5. If the result for a sensor is not 85°C, store and go to 2.
> 6. 85°C. Check the resolution. If it is still 12 bit, that's a valid
> reading. Store and go to 2.
>
> ?? How do I check the resolution?
>
Read the sensor's uncached tempres node.
Kind regards
Jan
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