Rust Programming Cookbook

How it works...

Instead of the naive busy waiting loop we created in the Creating I2C device drivers recipe, we now use a tokio-rs stream (effectively an asynchronous iterator) of events on which we can register a handler. Let's see how this more efficient structure is implemented.

First, in step 2, we recreate the sensor code from the Creating I2C device drivers recipe in order to have a sensor to use. In short, the code simulates an I2C-connected temperature sensor with a random number generator to show how a bus-connected device driver operates.

In step 3, we are preparing to use the driver to read a value and send it to a worker thread using a channel. Therefore, we create a Reading struct that saves a sensor reading at a certain timestamp. ...