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Baudrate of DS18B20

OBD, CAN, EV, RV

Baudrate of DS18B20

Postby yamadanao614 » Mon Jul 24, 2017 9:27 am

I'm trying to connect a DS18B20to my Beaglebone Black. Now I wan't to determine the Baudrate but can't find it in the Datasheet of the DS18B20.

In the internet I saw different ones (9600, 19200). Can I simply choose one the Sensor pick's up on it? If so up to what maximal rate?

Sorry for this RTFM question, but I really can't find the answer for that.
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Re: Baudrate of DS18B20

Postby ag » Thu Jul 27, 2017 9:03 am

There are two operating modi for the 1-wire protocol: normal and overdrive. Normal operation can perform data transfers at up to 16.3 KBit/sec, and overdrive operation can transfer data at up to 142 KBit/sec. For details you can check the Wikipedia article on 1-wire https://en.wikipedia.org/wiki/1-Wire or any of the many Beaglebone Black specific 1-wire articles on the web.
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