Method and tool for testing serial port of electronic product

Abstract

The invention provides a tool and method for testing the serial port of an electronic product. The tool comprises a master control module, a serial port multiplexing module, an interface module and a storage module, wherein the master control module scans the interface module by virtue of the serial port multiplex module to identify the mode of the tool; the interface module is connected with a PC (personal computer) when the tool is identified to be in a preset mode, the master control module indicates the storage module to mark out an address space, so as to receive test information which is written by the PC and is used for testing the serial port of the electronic product; the interface module is disconnected with the PC when the tool is identified to be in a test mode, the master control module utilizes the test information to test the serial port of the electronic product and stores the test result data into the storage module; and the interface module is connected with the PC when the tool is identified to be in a data query mode, and the master control module sends the test result data stored in the storage module to the PC. The tool provided by the invention has high testing efficiency and is convenient to carry, and the frequency of hot plug of the PC is effectively reduced.

Description

technical field [0001] The invention relates to the field of electronic technology, in particular to a method and tooling for testing serial ports of electronic products. Background technique [0002] Electronic products with programmable modules generally support online software programming mode, which is realized through the serial port module of the product circuit. Electronic products must test their serial ports before leaving the factory. The existing test method is to use a serial port line to connect the electronic product with a PC (Personal Computer), and set the matching baud rate, data length, parity bit, check code and other tests through the serial port communication software. parameters, and then the PC sends specific instructions to the electronic product, and the electronic product returns a corresponding response signal after receiving the instruction from the PC. Detectors determine whether the serial port is good or bad by judging the response signal re...

AI Technical Summary

Problems solved by technology

This test method requires testers to use PCs, which requires high investment in equipment, takes up a lot of space, and requires high quality testing personnel. When testing the serial port of an electronic product, it needs to be hot-swapped from the serial port of the PC, which may cause burnout. The danger of PC serial port, the cost of maintaining PC is very high

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