In Arduino, the HAL is nothing more than the collection of classes and function calls that overlay on top of the C++ programming language and, in a sense, “turn it into the Arduino programming ...

Unless you’re experienced in programming in the Wiring language, on which the Arduino language is based, you’ll want to start with the included examples, which are in the Sketchbook.

But wait! Before the Arduino die-hards leave, take note that PlatformIO can use all of the “Arduino Language,” so your digitalWrites and analogReads are safe (for now).

Arduino grew out of a program called Wiring, developed by an institute in Bogota, Colombia, and at MIT Media Labs. The Wiring project developed an open programming language and integrated development ...

The robot can currently be programmed using MicroPython and the Arduino language. Visual block programming is to be added soon, but there is no exact date for this yet.