Probing Pins for Protocol Polyglots - Stacking Multiple Protocols on GPIO Pins

Learn how to stack multiple communication protocols like UART, SPI, and I2C onto the same GPIO pins in this 25-minute conference talk by exploiting undefined "don't care" regions in protocol specifications. Discover techniques for bitbanging several devices simultaneously to create protocol polyglots without requiring additional hardware, enabling more efficient use of limited pin resources in embedded systems and hardware projects.