TWI453443B - Data analysis method - Google Patents

Description

Data analysis method

The present invention relates to digital data processing, and more particularly to a data analysis method.

With the advancement of digital technology, such as memory cards, electronic chips, image processing chips for liquid crystal displays (LCDs), and complementary metal-oxide semiconductors (CMOS), electronic devices that transmit or store data using digital signals Increasing popularity.

When the R&D personnel develops and detects the above-mentioned electronic device, the logic analyzer is usually used to capture the digital signal input to the electronic device or the electronic device, and is displayed on a display device for development. The personnel analyzes and detects whether the digital signal captured above is normal, thereby determining whether the design of the electronic product is normal.

The commercially available logic analyzer captures the digital data and displays it on the display device. Most of the data is displayed directly on the horizontal axis, or in the data series corresponding to the waveform. Digital data taken.

However, when a researcher uses a logic analyzer to retrieve digital data and translate it into a data series, it is still necessary to query the translation specifications of the communication protocol corresponding to the object to be tested, so as to understand the meaning of the decoded data series. It can be judged whether the design of digital data processing of electronic products is normal.

And as everyone knows, with the advancement of technology, various electronic products are needed. The amount of digital data is getting larger and larger, which makes the displayed data series more complicated and complicated. This kind of analysis will not only increase the difficulty of R&D personnel detection, but also may lead to misjudgment. It will cause delay in detection time, which will result in low efficiency of research and development.

In view of this, the main object of the present invention is to provide a data analysis method, which can automatically parse a data sequence at the time of detection and display the meaning represented by the data series.

In order to achieve the above object, the data analysis method provided by the present invention is used to parse the data acquired by the logic analyzer when a logic analyzer reads data to be read or read from the object to be tested. And the data includes a plurality of packets; the data parsing method comprises the following steps: A. Establishing a database, and the database includes a plurality of data arrays and a complex array corresponding to the meaning of the data series; The data series refers to a sequence obtained by decoding the captured data through a decoding means of a communication protocol corresponding to the object to be tested; the meaning information refers to various serials of communication in the object to be tested In the specification of the agreement, the meaning of the representative is respectively; B. selecting the decoding means corresponding to the communication protocol of the test object; C. using the logic analyzer to draw at least one of the object to be tested or from the object to be tested At least one packet in the read data; D. The decoding method selected in step B is used to interpret the packet captured in step C to obtain a data sequence; E. searching the database established in step A, and selecting corresponding step D in the database. The meaning information of the data series; F. The meaning information of the step E selection is displayed on a display device.

In this way, through the above design, the data series can be automatically analyzed at the time of detection, and the meaning represented by the data series can be displayed, thereby improving the speed and efficiency of the detection by the research and development personnel.

In order that the present invention may be more clearly described, the preferred embodiments are illustrated in the accompanying drawings.

The invention is used for parsing each data during the detection when a test system detects a test object, and the data includes a plurality of packets. Referring to FIG. 1, the test system includes a computer 10 and a logic analyzer 20. The computer 10 is connected to the object to be tested 30 through a transmission interface 12 (such as USB, SATA, etc.), and the logic analyzer 20 is connected. The computer 10 is connected to the transmission interface 12. In addition, in this embodiment, the object to be tested 30 is a memory card. Referring to FIG. 2 and FIG. 3, the data parsing method of the preferred embodiment of the present invention includes the following steps: before detecting, a database is created and stored in the computer 10, and the database includes complex array data. The sequence and the complex array correspond to the meaning information of the data series. Wherein, the data series 50 refers to the corresponding correspondence The decoding means of the communication protocol of the object to be tested 30 obtains the sequence obtained by decoding the captured data (as shown in the numeral 50 of FIG. 3), and the above-mentioned series includes the plurality of pieces of data 51 (eg, 0X0D, 0XB368). , 0X000, 0X77, etc.); the meaning information 40 refers to the meaning of the representative of the data sequence 50 in the specification of the communication protocol of the object 30 to be tested. In detail, in the specification of the communication protocol of the object to be tested 30, the contents of the various data 51 in the data series 50 are interpreted to have different meaning names 41 and meaning contents 42. For example, the meaning name 41 may be a name such as Start, Stop, CMD, Host, or CRC STATUS, and the meaning content 42 is in a different meaning name. There will be different contents, such as: under the meaning of CRC STATUS, there may be 101 representing incorrect (Wrong), 010 representing correct (Right), and indicating fault (Error). 111 and other different content.

When the detection is started, the decoding means of the communication protocol corresponding to the object to be tested 30 is selected first. Generally, the communication protocol is stored in the dynamic link library (DLL) of the computer 10 corresponding to the object to be tested 30, and the dynamic link database is statically linked to the Microsoft base. A dynamic link repository for the Microsoft Foundation Classes (MFC). In this way, the decoding means of the communication protocol can be obtained by selecting the corresponding dynamic link database.

Then, the logic analyzer is used to retrieve the number of packets from the computer 10 to be written into the object to be tested 30 or read by the computer 10 from the object to be tested 30 to the logic analysis. In the memory (not shown) of the instrument 20, each of the captured packets is interpreted by the selected decoding means to obtain a complex array data sequence 50.

After obtaining the data sequence 50, searching for the database stored in the computer, and selecting the meaning information 40 corresponding to each of the data series 50 obtained in the foregoing, in other words, selecting each piece of data 51 in each data series 50, respectively The meaning name 41 and the meaning content 42 of the representative.

Finally, according to the order in which the packets are captured, the data sequence 50 obtained by the interpretation, the meaning information 40 obtained by the analysis, and the start address 60 of each packet in the memory are sequentially arranged on a display device. on. In the embodiment, the display device is a screen of the computer 10. Of course, in actual implementation, the display device may be displayed on another external display device.

After that, the steps of capturing the packet can be repeated until the detection stops, so that the entire detection process can be completely analyzed and displayed on the display through uninterrupted capture, interpretation, selection and display. On the device.

In addition, in order to enable the R&D personnel to perform the detection of the data quickly, the data content can be displayed in the form of data, or directly displayed in text form. For example, referring to the circle selection of FIG. 4, in the specification of the communication protocol of the object to be tested 30 in this embodiment, under the meaning name CRC error detection status (CRC STATUS), there are three corresponding contents representing different states. Meaning content: 101, 010 and 111, where 101 represents the error (Wrong); 010 represents the correct (Right); 111 represents the fault (Error). In this way, when the data 51 in the data sequence 50 is interpreted, the meaning name is: CRC STATUS (CRC STATUS) And the meaning content is: 010, when the CRC detection result is correct, the text representing the correct (Right) can be used instead of the original 010 data to be displayed on the display device, so that the researcher can more quickly access the data. The content of the detection is analyzed.

In this way, through the above design, the R&D personnel can view the translation specifications of the communication protocol corresponding to the object to be tested without searching for the meaning of the data series directly on the display device, thereby greatly improving the research and development. Speed and efficiency of personnel testing. In the meantime, the above description is only for the preferred embodiments of the present invention, and the equivalent method variations of the present invention and the scope of the patent application are intended to be included in the scope of the present invention.

10‧‧‧ computer

12‧‧‧Transport interface

20‧‧‧Logic Analyzer

30‧‧‧Test object

40‧‧‧ Meaning information

41‧‧‧ Meaning name

42‧‧‧ Meaning content

50‧‧‧ data series

51‧‧‧ data

60‧‧‧ starting address

1 is a structural diagram of a test system using the analysis method of the present invention; FIG. 2 is a flow chart of the analysis method of the present invention; and FIG. 3 and FIG. 4 are display screens after using the analysis method of the present invention.

Claims (6)

A data analysis method is used to parse a data sampled by a logic analyzer when a logic analyzer reads a data to be read or read from the object to be tested, and the data includes There are a plurality of packets; the data parsing method comprises the following steps: A. Establishing a database, and the database includes a plurality of data columns of the complex array and the meaning information of the complex array corresponding to the data series; wherein the data is The sequence refers to a sequence obtained by decoding the captured data through a decoding means of a communication protocol corresponding to the object to be tested; the meaning information refers to various specifications of the communication protocol of the object to be tested, Corresponding to the meaning of the representative; B. selecting the decoding means of the communication protocol corresponding to the object to be tested; C. using the logic analyzer to extract at least one of the data to be written into or read from the object to be tested At least one packet; D. using the decoding means selected in step B, interpreting the packet captured in step C to obtain a data sequence; E. searching the database established in step A, selecting the database Corresponding Step D obtains the meaning information of the data sequence; F. displays the meaning information selected in step E on a display device. According to the data parsing method described in claim 1, each of the data series includes a plurality of pieces of data, and each piece of data has different meanings according to the content of the data in the protocol of the object to be tested; wherein, in the step In the database established by A, The name of the meaning represented by the various data contents is stored; in step E, the meaning name represented by each piece of data in the data sequence obtained in step D is further selected; in step F, the selection in step E is displayed. The meaning name corresponding to each piece of data. According to the data parsing method described in claim 2, each of the data series includes a plurality of pieces of data, and each piece of data has different meanings according to the content thereof in the specification of the communication protocol of the object to be tested; wherein, in the step In the database established by A, the content represented by various data contents is stored; in step E, the meaning content represented by each piece of data in the data series obtained in step D is further selected; In F, the meaning content of each piece of data selected in step E is displayed. The method for parsing data according to claim 1, wherein in step C, when the logic analyzer retrieves a plurality of packets, in step F, the obtained meaning information is obtained according to the retrieval order. The sequence is displayed on the display device. The data analysis method of claim 1, wherein in the step C, the logic analyzer first stores the packet in a memory; in the step F, the packet is further displayed in the memory. The starting address. The data analysis method according to claim 1, wherein in step F, the data sequence obtained by the step D is displayed at the same time.