You can’t make use of all of these at once, but with up to four different connections wired to a single ... remixed from Raspberry Pi 4 GPIO pinout diagram by [Les Pounder].

that allows him to open an SPI connection, initialize, transfer, and close the connection. After connecting an Arduino to the MOSI, MISO and SCK pins of his Arduino, [Louis] was able to transfer ...

The eSi-SPI core can operate as a SPI master or slave. Multiple chip-selects are supported in master mode, to allow connection to multiple slave devices. The SPI is supplied with an AMBA APB slave ...