creating codes for PIC16F84A

We've all been there - you've spent hours and hours trying to get that sketch working, but somehow, you're not reacting well to time critical events in your system. Maybe it's a wireless peripheral indicating when a packet is ready. Maybe it's an external Flash device signaling when data is ready to be read out. Maybe it's as simple as a button push that you need to react quickly to! But, try as you might, it seems the best way to see these sort of events is to just `digitalRead()` that pin over and over in your main `loop()` function until something interesting happens. ...or is it?

In this article, we'll delve into amplitude modulation and what it's used for. Also, we will differentiate between communication methods that do and do not use modulation.

Learn how to design an I2C interface using the Silicon Labs SMBus peripheral.