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Can somebody give me simple example code for Microsoft Windows 10 Core for IoT - Windows Universal App project C# , for having Raspberry Pi 2 with Windows 10 and reading temperature from GPIO with DS18B20 sensor ?

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Highly unlikely.

The DS18B20 requires being able to do timings of the order of microseconds.

Currently Windows IoT on the Pi seems to have a delay granularity of a millisecond.

  • Ok, thank you for info, is there any official documentation about this limitation or specification attribute ? – Hrvoje Kusulja Jun 11 '15 at 12:19
  • I have not seen any, but I have not looked. I am basing my opinion on posts like this. – joan Jun 11 '15 at 14:16
  • Now that RTM version is out, is it sill limitation ? – Hrvoje Kusulja Aug 11 '15 at 18:53
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Sample project is available here: https://github.com/selomkofori/ds18b20_win10iot

The DS18B20 is a digital temperature sensor that uses a 1-wire interface which only requires 1 port pin for communication.

Unlike other platforms, Windows 10 IoT does not have libraries or micro-second timer resolution needed to read 1-wire devices.

This project uses the UART0 Rx/Tx pins to communicate and read temperature values from the DS18B20, and can probably be easily adapted to read other 1-wire devices.

The code is based on Electric Imp's 1-wire bus over UART found here: https://electricimp.com/docs/resources/onewire/

A second alternative is to acquire a DS2428-100 Single-channel 1-Wire Master chip that can interface between I2C and 1-Wire devices. The following code can be used for that: https://github.com/Rinsen/OneWire

A third alternative is to use an Arduino device in "slave mode", and accessed via the I2C bus. See: http://blog.oscarliang.net/raspberry-pi-arduino-connected-i2c/

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BMP180 Sensor project will do temperature for you. The sensors are only $7.00 on Amazon. Use the link above and it will guide you all the way through the process. Just not the same chip.

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