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-Kernel driver w1_therm
- * Maxim ds18*20 based temperature sensors.
-Author: Evgeniy Polyakov <email@example.com>
-w1_therm provides basic temperature conversion for ds18*20 devices.
-supported family codes:
-Support is provided through the sysfs w1_slave file. Each open and
-read sequence will initiate a temperature conversion then provide two
-lines of ASCII output. The first line contains the nine hex bytes
-read along with a calculated crc value and YES or NO if it matched.
-If the crc matched the returned values are retained. The second line
-displays the retained values along with a temperature in millidegrees
-Centigrade after t=.
-Parasite powered devices are limited to one slave performing a
-temperature conversion at a time. If none of the devices are parasite
-powered it would be possible to convert all the devices at the same
-time and then go back to read individual sensors. That isn't
-currently supported. The driver also doesn't support reduced
-precision (which would also reduce the conversion time).
-The module parameter strong_pullup can be set to 0 to disable the
-strong pullup or 1 to enable. If enabled the 5V strong pullup will be
-enabled when the conversion is taking place provided the master driver
-must support the strong pullup (or it falls back to a pullup
-resistor). The DS18b20 temperature sensor specification lists a
-maximum current draw of 1.5mA and that a 5k pullup resistor is not
-sufficient. The strong pullup is designed to provide the additional