While the Raspberry Pi has very good support for an I2C bus, a lot of very cool chips – including the in system programmer for just about every ATtiny and ATmega microcontroller – use an SPI bus.

Raspberry Pi 5-to-NUCLEO communication via SPI The Python SPI example sends a byte (0xAA) to the NUCLEO-G031K8, which, if verified by the SPI slave, toggles the NUCLEO-G031K8’s user LED. The SPI ...

There’s a new and very detailed video tutorial about the Raspberry Pi available from the Australian firm Core Electronics. There are 30 videos and 5 chapters in total. A few of the introduction videos ...