The pic32 core has created Wire API method functions to do this. In some types of applications it can also be useful to know the actual master clock frequency vs what was requested.

There are times where being able to get the current master clock frequency can be useful. Create a quick-start node that reads an NFC tag to serve most common purposes.Currently, the Wire library has a way to set/alter the i2c master clock frequency but does not have a way to get the current/actual master i2c clock frequency being used.For the new type, create action nodes that correspond to the functions and methods provided by the third-party C++ library.Declare a dependency on a third-party C++ library so that XOD knows where to download it, saving users from manual install.There may be several instances of this node, one for each hardware module. Declare a new custom type pn532-device, which describes an RFIC/NFC module and how is it connected to an Arduino board.In order not to go into the details of working with tags, we will take the Adafruit-PN532 Arduino library and just wrap it in XOD nodes. Imagine that we want our Arduino board to turn the built-in led on or off when we bring an NFC tag, such as travel pass, to it.Ĭonsider that we have no XOD library to work with RFID/NFC scanner PN532 ( xod-dev/pn532-nfc), and try to make it on our own. Also, you need to have some experience of working with C++ libraries for Arduino. To understand this guide, you have to know how to write C++ code in XOD and how to work with custom types.

Many libraries already have been written for Arduino and they can be included into XOD to use the full power of the existing ecosystem.

Arduino zero wire library