The Everything Interface: Desktop to Chip [USB to SPI, I2C, JTAG, UART, SWD...]

The USB-to-digital Swiss army knife (FT2232H) is available in a super handy package: the Tigard multi-protocol tool for hardware hacking. See how I get Python talking SPI and I2C from a computer, to quickly develop and understand chip APIs. This thing can also program flash memory, microcontrollers, and FPGAs, do JTAG and SWD, level-shift to anything between 1.8 and 5 Volts and is all around pretty cool and useful. ** Resources ** The Tigard documentation is at: https://github.com/tigard-tools/tigard and you can get it at https://www.crowdsupply.com/securingh... or (EU) https://1bitsquared.de/products/tigard The FTDI FT2232H datasheet: https://ftdichip.com/wp-content/uploa... PyFTDI, a favorite for using the computer to talk to stuff in Python: https://eblot.github.io/pyftdi/featur... The code used to get the Tigard managing the PCF8575 and controlling the Caravel processor is available at: https://github.com/psychogenic/psycho... If you're curious about the Caravel SoC, you can find out more at https://caravel-harness.readthedocs.i... and the housekeeping SPI stuff is at https://caravel-harness.readthedocs.i...