SPLibrary-STM32F103-SPI-FULLDUBLEX-MASTER-SLAVE_COMMUNICATION STM32F103C8 MASTER and STM32F103RB Nucleo Board SLAVE The master and the slave were connected via the spi1 line. MOSI ==> PA7 MISO ==> PA6 SCK ==> PA5 SS ==> PA4 STM32F103RB NUCLEO - SLAVE STM32F103C8 - MASTER