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4 天
串口、COM口、UART口, TTL、RS-232、RS-485有啥区别
嵌入式里面说的串口,一般是指UART口,但是我们经常搞不清楚它和COM口的区别, 以及RS232, TTL等关系, 实际上UART,COM指的物理接口形式 (硬件), 而TTL、RS-232是指的电平标准 (电信号).
27 天
如何提高总线抗扰度之EFT篇
RS-485总线在工业通信中广泛应用,但恶劣的工业环境易导致外部干扰,如电快速脉冲群(EFT),影响其稳定性。本文将探讨如何测试并排除EFT对RS-485总线的干扰。 脉冲群骚扰的来源 ...
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