Integrated universal serial bus data cable testing device and testing method

An integrated universal serial bus (USB) data cable testing device, comprising:

• a multi-port testing board, integrating at least seven types of USB ports and a Lightning port;
• a main controller module, comprising:
• a main control microcontroller unit (MCU), and a protocol parsing chip, wherein the main control MCU is configured to perform continuity detecting, protocol parsing, and resistance calculation, and the protocol parsing chip is connected to the main control MCU via an inter-integrated circuit (I2C) bus;
• an integrated detection module, comprising a continuity detecting circuit, an internal resistance testing circuit, an E-marker identification circuit, a charging head detecting circuit, and a pull-up and pull-down resistance detecting circuit, wherein the continuity detecting circuit is connected to pins of a USB output end and a USB input end, and the E-marker identification circuit and the charging head detecting circuit are connected to configuration channel (CC) pins of the protocol parsing chip;
• a dual-mode power supply module, comprising:
• an AAA battery compartment, an external USB type-C power supply port, and a switch for power supply switching, wherein the dual-mode power supply module is configured to support AAA battery power supply and external USB type-C power supply, and the switch for power supply switching is a mechanical switch for power supply switching;
• and
• a human-machine interaction module, comprising a liquid crystal display (LCD) screen and a function switching button, wherein the human-machine interaction module is configured to display continuity topology diagrams, internal resistance values, E-marker information, data cable protocol types, charging head protocols, and pull-up and pull-down resistance values.