SPI, SOC, and UART modules typically use the following interfaces for connection and communication:SPI interface: The SPI module communicates using a dedicated SPI interface. The SPI interface includes multiple signal lines, such as clock line (SCK), master output slave input line (MOSI), slave output master input line (MISO) and chip select line (SS/CS), etc. These signal lines are connected by hardware to the corresponding SPI devices. SOC interface: SOC module is an integrated circuit chip, which usually uses a set of standard interfaces and buses to connect to other devices. These interfaces may include common interfaces, such as I2C (Inter-Integrated Circuit), SPI, UART, etc., and may also include dedicated interfaces, such as Ethernet (Ethernet), USB (Universal Serial Bus), and the like.UART interface: The UART module communicates using the UART interface. The UART interface usually consists of a pair of data lines (TX and RX) for bidirectional serial data transmission. They are usually configured with standard electrical characteristics and baud rates to ensure proper communication between devices.These interfaces are standard serial communication interfaces for data transmission and communication between devices. Different devices may use different interfaces, depending on the functional requirements and hardware design of the device. They are widely used in IoT devices, embedded systems, communication devices, and more.