74HC595 interfacing with SPI
The 74HC595 (http://goo.gl/J9ILXZ) is a great chip for expanding output only GPIO and is normally really cheap. Normally, you bit bang an SPI like interface to send data to it but I decided to test whether it actually works using an SPI peripheral. With my trusty STM32F0 Discovery board and my good ol’ oscilloscope, I can […]