Tag Archives: interface

AVR basics: control more devices using decoders

One of the issues with the Serial Peripheral Interface (SPI) bus, as many people have noted, is that it requires one Slave Select (SS) line – which means one GPIO pin on your microcontroller – for each device on the bus. That’s in addition to the three main bus lines – MOSI, MISO and SCK. This might be difficult on… Read more »