Comment by nagisa

2 days ago

This superloop pattern can also appear in more abstract scenarios as well.

The wildly popular ESPHome is also driven by a superloop. On every iteration the main loop will call an update handler for each component which then is supposed to check if the timers have elapsed, if there is some data coming from a sensor, etc before doing actual work.

This pattern brings with it loads of pitfalls. No component ought to do more than a "tick" worth of work or they can start interfering with other components who expect to be updated at some baseline frequency. Taking too long in any one component can result in serial buffers overrunning in another component, for example.