I use a serial port and another device to communicate with each other, loop reads the data of another equipment, but when I insert the usb port, a serial port receives becomes slowly, sometimes jammed, if there is no plug in usb port, is normal, this is why, I didn't use usb port upper application, the problem of usb drive?

CodePudding user response:

May be interference, my understanding is a serial port and usb driver, from the perspective of the bus is not directly associated, will not affect each other,