If you’d like, I can help you from the textbook step-by-step (with code, timing diagrams, or state machines) so you can build your own reliable solutions. Just send the problem number and text.

The term "Introduction to Embedded Systems" often refers to the widely-used textbook by Edward A. Lee and Sanjit A. Seshia , specifically

Introduction to Embedded Systems: A Cyber-Physical Systems Approach Ptolemy Project Sample Post Structure