To do anything interesting, we need reliable communication across machines (e.g. over bluetooth) and oftentimes within as well, between components working together within a device. In one of my last projects, I wound up dealing with mounds of unreliable comm and here I’ll go over how I got around it and a few of the…
Creating a sensor or peripheral with an SPI (slave) interface
- by: Pat Deegan
- On
Designed to interact with a 16-bit I/O expander, the firmware was ready for testing. Though I was still waiting on parts, I wanted to make sure it would all work as expected. What’s an impatient developer to do? Create his own SPI slave to replace the missing part, of course! If you’ve gotten anywhere beyond…