基于J-Link的通信方法、系统、电子设备和存储介质

By combining the J-Link debugger and the Modbus-RTU protocol, communication between embedded devices and host computers was achieved, solving the cost and complexity issues caused by additional hardware interfaces, reducing hardware costs, and improving communication efficiency and reliability.

CN120909814BActive Publication Date: 2026-07-17SHENZHEN HUACHENG IND CONTROL
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
SHENZHEN HUACHENG IND CONTROL
Filing Date
2025-07-25
Publication Date
2026-07-17

AI Technical Summary

Technical Problem

In embedded devices equipped with J-Link interfaces, existing technologies require additional RS485, CAN, or USB interfaces to communicate with a host computer, which increases hardware costs and complexity.

Method used

The J-Link debugger is used to assemble, send, and parse data frames. Combined with the Modbus-RTU protocol, the DCC register is used to manage data and status. A custom communication protocol is adopted to avoid the use of additional hardware interfaces.

Benefits of technology

It reduces hardware costs, improves the orderliness and scalability of communication, reduces data transmission conflicts and failure probability, and enhances the fault tolerance of communication.

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Abstract

本公开提供一种基于J‑Link的通信方法、系统、电子设备和存储介质，上位机对目标数据进行拼装，得到目标数据帧，所述目标数据帧符合modbus‑RTU协议识别的格式，包括帧头、标志域、数据域、校验域；通过J‑Link调试器，将所述目标数据帧发送至下位机的DCC数据寄存器；定时通过J‑Link调试器，读取所述下位机的DCC状态寄存器值；响应于所述DCC状态寄存器值为第一预设值，通过J‑Link调试器，读取所述DCC数据寄存器中的响应数据帧；根据modbus‑RTU协议，解析所述响应数据帧，得到目标响应数据。从而，在保有J‑Link接口的嵌入式设备上，无需增加额外的RS485接口，或者CAN接口，或者USB接口，通过自定义通信协议即可实现上位机通信功能，可以节省硬件成本。
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