Volatile unsigned long conversionStartTime = 0 scratchpad, with the CRC byte at the end Volatile DeviceState state = DS_WaitingReset - handle configuration (resolution, alarms) This sample emulates a DS18B20 device (temperature sensor), so we start by defining the available commandsĬonst byte DS18B20_START_CONVERSION = 0x44 Ĭonst byte DS18B20_READ_SCRATCHPAD = 0xBE Ĭonst byte DS18B20_WRITE_SCRATCHPAD = 0x4E This is the ROM the arduino will respond to, make sure it doesn't conflict with another deviceĬonst byte owROM = On Arduino Uno, you can use pin 2 or pin 3 This is the pin that will be used for one-wire data (depending on your arduino model, you are limited to a few choices, because some pins don't have complete interrupt support) The example always ever responds to requests with the same temperature This examples demonstrates how to use the OneWireSlave library to implement a fake DS18B20 (temperature sensor) with an arduino board.
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