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电子工程专辑
4 年
鱼鹰:探究 USB2.0 的真实传输速度是多少?
今天鱼鹰简单聊聊 STM32F103 USB 外设实际传输速度的问题。 103 的外设号称 USB 2.0,但实际上是全速的 USB 2.0,即传输 1 bit 数据的速度是 12Mbit/s,类似串口波特率 115200 的概念。 但是我们知道串口协议本身也是有开销的,比如 1 bit 起始位,1 bit 停止位,这都是必须 ...
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