# 硬件错误记录

RX没有接上拉电阻导致，RX电平处于未知状态，会产生一定的波形造成接收帧错误中断的触发

![image-20220307153352269](markdown.assets/%E7%A1%AC%E4%BB%B6%E9%94%99%E8%AF%AF%E8%AE%B0%E5%BD%95.assets/image-20220307153352269.png)