Mobile phone USB interface detection system and method

Abstract

The invention relates to a mobile phone USB interface detection method which comprises the following steps: receiving a signal transmitted by the data line of an USB interface; when the signal transmitted by the data line is received, measuring the voltage of a charging interface; if the measured voltage of the charging interface rises, updating a connection state stored in a storage structure into an inserting state; measuring the voltage of the charging interface every t intervals, judging whether the voltage of the charging interface falls; if the voltage of the charging interface does notfall, the voltage is unchanged within a certain time T', updating the connection state stored in the storage structure into an inserted state; if the voltage of the charging interface falls, updatingthe connection state stored in the storage structure into a pulling-out state; and if the voltage of the charging interface is unchanged within a certain time interval T' after the voltage falls, updating the connection state stored in the storage structure into a pulled-out state. In addition, the invention also provides a mobile phone USB interface detection system.

Description

technical field [0001] The invention relates to a detection system and method, in particular to a mobile phone USB interface detection system and method. Background technique [0002] When using chips in mobile phone software development, common plug-in devices such as Universal Serial Bus (USB, Universal Serial Bus) cannot be correctly detected by the device when plugging and unplugging, resulting in misoperation of the mobile phone and prone to product failure. Serious consequences caused by faults or poor user experience. Common problems include that the USB mode cannot be read correctly, the mobile phone cannot access the data of the memory card, resulting in the file archiving function not working normally, and it is more likely to cause the mobile phone to misjudge the plug-in and pull-out status, resulting in mobile phone crashes and abnormal functions, etc. . Contents of the invention [0003] In view of the above, it is necessary to provide a mobile phone USB in...

AI Technical Summary

Problems solved by technology

[0002] When using chips in mobile phone software development, common plug-in devices such as Universal Serial Bus (USB, Universal Serial Bus) cannot be correctly detected by the device when plugging and unplugging, resulting in misoperation of the mobile phone and prone to product failure. Faults or serious consequences caused by users due to poor experience

Common problems include that the USB mode cannot be read correctly, the mobile phone cannot access the data of the memory card, resulting in the file archiving function not working normally, and it is more likely to cause the mobile phone to misjudge the plug-in and pull-out status, resulting in mobile phone crashes, abnormal functions, etc.