还在用数组一个个填数据？高手都在用结构体“降维打击”。 今天聊一个让STM32代码从“能跑”到“飞起”的硬核技巧：结构体在通信协议中的实战应用。 如果你还在用 sendBuf[0] = addr; sendBuf[1] = cmd; 这种“原始人”写法，这篇文章将彻底改变你的编程习惯。

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