ATtiny Event System Control an LED While the Core Sleeps

The ATtiny Event System (EvSys) ties ATtiny hardware blocks together to help them run independently of software on the core. In fact, the core may be asleep and the hardware blocks, when properly configured, continue to function.

This video shows an example of a night light LED with an override switch. The Event System (EvSys), the Custom Configuration Logic (CCL) block, the Analog Comparator (AC), and pins all function while the core sleeps. You can see how to configure the EvSys and that it differs on series 1 and 2 ATtiny devices. The example is tested on the 412 and the 3224.

Chapters
0:00 Intro & demo
2:30 Design & Sys Diagram
4:10 Documentation
6:08 Software
11:58 How to sleep
13:39 Summary

Links

megatinycore github has documentation

ATtiny playlist:

See directory attiny_nightlight_412_3224