Method, device and electronic device for detecting disconnection of USB device
An electronic device and device technology, applied in the computer field, can solve problems such as inability to detect USB device disconnection, out-of-sync status of the underlying software and upper-layer software, and chaotic rearview mirror device mode.
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[0027] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is only some embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.
[0028] An embodiment of the present invention provides a method for detecting disconnection of a USB device, such as figure 1 As shown, the method includes:
[0029] S11. After connecting with the USB device, acquire the frame number of each frame unit transmitted between the USB device.
[0030] Wherein, the frame unit may be a frame with ...
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