In May 2024, the author discusses using Armbian-based single-board computers for hardware analysis and introduces the PiFex, a companion board for the Raspberry Pi, aimed at teaching hardware hacking. The PiFex offers interfaces like UART, SPI, I2C, JTAG, and SWD. Additionally, it features level shifters, a logic analyzer connector, and easy software setup through USB-Ethernet gadget. Through a demonstration on reverse-engineering a JTAG tap on an SSD, the author showcases the functionality of the PiFex and its applications in hardware assessment. Initial hurdles in learning embedded protocols are addressed, and Jupyter Notebooks are used for streamlined training.
https://voidstarsec.com/blog/jtag-pifex