A316 Zero-Code Firmware MCU Development Guide¶
Development Overview¶
This document helps developers implement serial communication between XU316 and MCU in the correct sequence. The development process is divided into the following steps, each with corresponding reference documentation.
Development Steps¶
Objective: Understand the frame format and command definitions for XU316-MCU communication
Reference Documentation: XU316 MCU Communication Protocol
Key Learning Points:
- Master the frame format (header
0x55AA, version, command, data length, checksum) - Understand data length definitions for each command
- Familiarize with audio format enumerations and type definitions
Objective: Run the complete protocol communication example based on GD32 platform
Reference Documentation: XU316 MCU Development Example
Example Contents:
- Minimal usage example (initialization, interrupt reception, main loop processing)
- Protocol layer functions (checksum calculation, frame packing, frame extraction, data processing)
- Complete command parsing code (0x00 ~ 0xEE)
- MCU-initiated commands (unmute, media control, audio mode setting, etc.)
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