AN1351: Using the Co-Processor Communication Daemon (CPCd)

2021-07-23 SILICON LABS


●本应用程序说明指导用户完成在Linux上正确配置和运行CPC守护程序(CPCd)所需的步骤。本文不讨论如何使用CPC库来编写与CPCd交互的应用程序。

●介绍
■协处理器通信(CPC)使一个主机系统能够通过物理传输(UART、SPI等)与网络协处理器设备(NCP)通信,NCP也称为辅助设备或辅助设备。

■在CPC中,处理器之间的数据传输被分割成连续的数据包。传输保证无错误且按顺序发送。多个应用程序可以在同一个端点上发送或接收,而无需担心冲突。

■CPC守护进程(CPCd)允许Linux上的应用程序与运行CPC的辅助应用程序进行交互。

■CPC守护进程(CPCd)分为三个组件:

▲守护程序二进制文件(cpcd)
▲使C应用程序能够与守护进程(libcpc.so)交互的库和相关头文件
▲配置文件(cpcd.conf)
●要点:

■操作理论
■编译和安装CPCd
■配置CPCd
■故障排除
■注意事项

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