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A commonly used library is the DallasTemperature library, used to access DS18B20 sensors on a 1-Wire bus. When creating a DallasTemperature object you pass a reference to a OneWire object. OneWire can create a 1-Wire bus on pretty much any port of an Arduino.

An example of this is like so:

// Setup a oneWire instance to communicate with any OneWire devices (not just Maxim/Dallas temperature ICs)
OneWire oneWire(ONE_WIRE_BUS);

// Pass our oneWire reference to Dallas Temperature.
DallasTemperature sensors(&oneWire);

However, there are some issues with using OneWire like thisto drive a 1-Wire bus, mainly around driving longer bus lengths, dealing with shorts, and other errors.

There is a commonly available chip called the DS2482-100 that can drive longer busses (hundreds of feet), deals with shorts and other errors. It is also less CPU heavy and it deals with a number of the slower aspects of 1-Wire.

For this reason, I would like to be able to pass a reference to a library that I have created instead. Currently, I am doing this by:

  • Calling the library OneWire
  • Replicating all the methods called by the DallasTemperature library
  • Swapping out the OneWire library for mine

This is relatively messy. I would ideally like to be able to pass either a reference to my library or a 1-Wire library, so that people can chose which interface to use.

How would I go about doing this?

A commonly used library is the DallasTemperature library, used to access DS18B20 sensors on a 1-Wire bus. When creating a DallasTemperature object you pass a reference to a OneWire object. OneWire can create a 1-Wire bus on pretty much any port of an Arduino.

An example of this is like so:

// Setup a oneWire instance to communicate with any OneWire devices (not just Maxim/Dallas temperature ICs)
OneWire oneWire(ONE_WIRE_BUS);

// Pass our oneWire reference to Dallas Temperature.
DallasTemperature sensors(&oneWire);

However, there are some issues with using OneWire like this, mainly around driving longer bus lengths, dealing with shorts, and other errors.

There is a commonly available chip called the DS2482-100 that can drive longer busses (hundreds of feet), deals with shorts and other errors. It is also less CPU heavy and it deals with a number of the slower aspects of 1-Wire.

For this reason, I would like to be able to pass a reference to a library that I have created instead. Currently, I am doing this by:

  • Calling the library OneWire
  • Replicating all the methods called by the DallasTemperature library
  • Swapping out the OneWire library for mine

This is relatively messy. I would ideally like to be able to pass either a reference to my library or a 1-Wire library, so that people can chose which interface to use.

How would I go about doing this?

A commonly used library is the DallasTemperature library, used to access DS18B20 sensors on a 1-Wire bus. When creating a DallasTemperature object you pass a reference to a OneWire object. OneWire can create a 1-Wire bus on pretty much any port of an Arduino.

An example of this is like so:

// Setup a oneWire instance to communicate with any OneWire devices (not just Maxim/Dallas temperature ICs)
OneWire oneWire(ONE_WIRE_BUS);

// Pass our oneWire reference to Dallas Temperature.
DallasTemperature sensors(&oneWire);

However, there are some issues with using OneWire to drive a 1-Wire bus, mainly around driving longer bus lengths, dealing with shorts, and other errors.

There is a commonly available chip called the DS2482-100 that can drive longer busses (hundreds of feet), deals with shorts and other errors. It is also less CPU heavy and it deals with a number of the slower aspects of 1-Wire.

For this reason, I would like to be able to pass a reference to a library that I have created instead. Currently, I am doing this by:

  • Calling the library OneWire
  • Replicating all the methods called by the DallasTemperature library
  • Swapping out the OneWire library for mine

This is relatively messy. I would ideally like to be able to pass either a reference to my library or a 1-Wire library, so that people can chose which interface to use.

How would I go about doing this?

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Cybergibbons
Cybergibbons
  • 5.4k
  • 7
  • 34
  • 51

How can I adapt the DallasTemperature library to accept another 1-Wire class?

A commonly used library is the DallasTemperature library, used to access DS18B20 sensors on a 1-Wire bus. When creating a DallasTemperature object you pass a reference to a OneWire object. OneWire can create a 1-Wire bus on pretty much any port of an Arduino.

An example of this is like so:

// Setup a oneWire instance to communicate with any OneWire devices (not just Maxim/Dallas temperature ICs)
OneWire oneWire(ONE_WIRE_BUS);

// Pass our oneWire reference to Dallas Temperature.
DallasTemperature sensors(&oneWire);

However, there are some issues with using OneWire like this, mainly around driving longer bus lengths, dealing with shorts, and other errors.

There is a commonly available chip called the DS2482-100 that can drive longer busses (hundreds of feet), deals with shorts and other errors. It is also less CPU heavy and it deals with a number of the slower aspects of 1-Wire.

For this reason, I would like to be able to pass a reference to a library that I have created instead. Currently, I am doing this by:

  • Calling the library OneWire
  • Replicating all the methods called by the DallasTemperature library
  • Swapping out the OneWire library for mine

This is relatively messy. I would ideally like to be able to pass either a reference to my library or a 1-Wire library, so that people can chose which interface to use.

How would I go about doing this?