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A kind of usb cable, multifunctional usb debugging method, debugger and debugging device

A debugging method and multi-functional technology, applied in the direction of instrumentation, error detection/correction, calculation, etc., to achieve the effect of good cable compatibility

Active Publication Date: 2022-05-13
FUZHOU ROCKCHIP SEMICON
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] For this reason, it is necessary to provide a multifunctional USB debugging method to solve the problem of using the USB interface to debug the whole machine

Method used

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  • A kind of usb cable, multifunctional usb debugging method, debugger and debugging device
  • A kind of usb cable, multifunctional usb debugging method, debugger and debugging device
  • A kind of usb cable, multifunctional usb debugging method, debugger and debugging device

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Embodiment Construction

[0027] In order to explain in detail the technical content, structural features, achieved goals and effects of the technical solution, the following will be described in detail in conjunction with specific embodiments and accompanying drawings.

[0028] see Figure 1 to Figure 8 It should be noted that, in this embodiment, a multifunctional USB debugging method supports microA / B of USB2.0, and the miniA / B interface is multiplexed with SWD (softwaredebug) and UART (UniversalAsynchronousReceiver / Transmitter) interfaces .

[0029] In this embodiment, a multifunctional USB debugging method can be applied to a multifunctional USB debugging device, and the multifunctional USB debugging device includes a specific external cable and a USB interface (details will be described below).

[0030] And in this embodiment, the ID pin of the external cable pulls down a resistor to the power ground. It should be noted that in this embodiment, the resistance value of the pull-down resistor of ...

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Abstract

The invention relates to the field of interface testing, in particular to a USB cable, a multifunctional USB debugging method, a debugger and a debugging device. The multifunctional USB debugging method includes the steps of: judging the type of the external cable interface, and performing corresponding operations according to the type judging result. Through the above method, the USB slot can be used to share different debugging modes without affecting the original function of the USB. Then achieve the purpose of using the USB port to debug the whole machine, and judge the resistance value of the ID pin of the external cable through the PHY of the USB controller. The resistance value is limited, and the cable compatibility is also good. .

Description

technical field [0001] The invention relates to the field of interface testing, in particular to a USB cable, a multifunctional USB debugging method, a debugger and a debugging device. Background technique [0002] With the development of science and technology and the improvement of living standards, electronic products are used more and more widely, and people's lives are increasingly inseparable from various electronic products. At present, the debugging of electronic products has always been a difficult problem for manufacturers, because as customers have higher and higher requirements for the size of the screen and the appearance of electronic products, and because of the limitations of molds and sizes, etc., electronic products The reserved hardware interface is very limited. [0003] In the prior art, an SD card slot or an earphone audio interface is often used for functional multiplexing to debug the electronic product as a whole. However, the current mainstream co...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F11/22
CPCG06F11/221
Inventor 吴良峰
Owner FUZHOU ROCKCHIP SEMICON