U212

Unit ChainBus Communication Protocol Converters

M5Stack Unit ChainBus Communication Protocol Conversion Units integrate an STM32G031G8U6 chip and use a UART daisy-chain communication protocol to enable chained connections of multiple devices. The M5Stack Unit ChainBus supports multiple protocol interface conversions, allowing various peripherals to be expanded on the same bus. These protocol converters also integrate hardware control and data interaction capabilities. The UART interfaces on the left and right sides are used to connect Chain series devices, supporting device UID query, version query, link device enumeration, heartbeat communication, and more. The top multifunction expansion interface can be used to extend unit series devices, supporting I²C communication, GPIO (input and output) management, analog-to-digital converter (ADC) sampling, and NVIC interrupt management. The Unit ChainBus is suitable for industrial control, the Internet of Things (IoT), smart home applications, and more.