Our board has a circuit as shown above.
KGL4 is connected to the IO port of the microcontroller.
I analyzed that KGL4 is low, the optocoupler is turned on, and OUT_KGL4 is at a low level.
KGL4 is high
1. Introduction to SCISCI (Serial Communication Interface) means "serial communication interface", which is a general term for serial communication technology relative to parallel communication. It wa
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If you don't believe me, scroll down.01 Lateness8:27 Beijing time, decided to take a nap for an