MicroPython Projects

Building a task manager using round-robin scheduling

Let's look at an example application that generates an LED railroad lights pattern. From a hardware perspective, this requires the use of two LEDs on the pyboard, such as the blue and yellow LEDs (on the pyboard series-D, you might use the green and blue LEDs). I prefer to use these because when we save new code to the pyboard, the red LED is used to show that the filesystem is being written to, and we don't want to interfere with that indicator. If we want one LED to be on while the other is off and then toggle them back and forth, we will need to initialize the blue LED to be on and the yellow to be off. We can then create two separate tasks, one to control the yellow LED and the other ...