Interrupts on STM32 MCUs come in two flavors: internal and external. Both types of interrupts use the same core peripheral in the Cortex-M core: the Nested Vectored Interrupt Controller, or NVIC.

SPI itself sees significant use with larger-resolution displays and data storage, but many sensors like Bosch’s BME280 and related MEMS sensors also implement an SPI interface in addition to the ...