Starting from a new hello world paradigm, we have introduced the concept of software design using statecharts and techniques of implementing statecharts on micro:bit with a simple framework. We have shown examples of representing states and events in Javascript and how a graphical design is …
In the previous episode, we introduced a simple statechart framework and learned how to represent leaf states with a Javascript enumeration. We also learned how to assign entry and exit actions to a leaf state such that they are automatically executed whenever the state is …
In the last episode, we introduced a statechart describing the behaviors of an alarm clock running on a micro:bit. Its operation is demonstrated in the following video: Microbit Timer (https://youtu.be/056EfSlMPCY) Statecharts are more than neat diagrams. Statechart is a visual language that precisely specifies how …
Previously in our modernized “hello-world” example, we illustrated how to treat one of the most commonly used resources in computer programs, timers or timeout as events that can be handled in the same way as any other types of event (such as button presses). This …
In the last post we discussed the need for a new programming model for our “hello world” program. Our initial version uses a common sequential programming model in which actions (or code) are executed one by one in a loop. If a loop contains the …