The GoodFET is an open source tool for programming microcontrollers and memories by SPI, I2C, JTAG, and a slew of vendor-proprietary protocols. In this lecture, the design of the GoodFET will be explained in detail, and various semi-proprietary protocols will be discussed in depth. Leading toward the future, methods of packet sniffing proprietary protocols will be discussed. Finally, the BadFET – a voltage glitching variant of the GoodFET – will be introduced.
