CN111767177B - Test method, device and equipment of LED display screen control card and storage medium - Google Patents
Test method, device and equipment of LED display screen control card and storage medium Download PDFInfo
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- CN111767177B CN111767177B CN202010411172.3A CN202010411172A CN111767177B CN 111767177 B CN111767177 B CN 111767177B CN 202010411172 A CN202010411172 A CN 202010411172A CN 111767177 B CN111767177 B CN 111767177B
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- G—PHYSICS
- G06—COMPUTING OR CALCULATING; COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F11/00—Error detection; Error correction; Monitoring
- G06F11/22—Detection or location of defective computer hardware by testing during standby operation or during idle time, e.g. start-up testing
- G06F11/2205—Detection or location of defective computer hardware by testing during standby operation or during idle time, e.g. start-up testing using arrangements specific to the hardware being tested
- G06F11/2236—Detection or location of defective computer hardware by testing during standby operation or during idle time, e.g. start-up testing using arrangements specific to the hardware being tested to test CPU or processors
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- G—PHYSICS
- G06—COMPUTING OR CALCULATING; COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F11/00—Error detection; Error correction; Monitoring
- G06F11/22—Detection or location of defective computer hardware by testing during standby operation or during idle time, e.g. start-up testing
- G06F11/2273—Test methods
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- G—PHYSICS
- G06—COMPUTING OR CALCULATING; COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F11/00—Error detection; Error correction; Monitoring
- G06F11/22—Detection or location of defective computer hardware by testing during standby operation or during idle time, e.g. start-up testing
- G06F11/26—Functional testing
- G06F11/263—Generation of test inputs, e.g. test vectors, patterns or sequences ; with adaptation of the tested hardware for testability with external testers
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- G06—COMPUTING OR CALCULATING; COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F15/00—Digital computers in general; Data processing equipment in general
- G06F15/76—Architectures of general purpose stored program computers
- G06F15/78—Architectures of general purpose stored program computers comprising a single central processing unit
- G06F15/7807—System on chip, i.e. computer system on a single chip; System in package, i.e. computer system on one or more chips in a single package
- G06F15/781—On-chip cache; Off-chip memory
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/006—Electronic inspection or testing of displays and display drivers, e.g. of LED or LCD displays
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/22—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources
- G09G3/30—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels
- G09G3/32—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED]
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Abstract
The application provides a test method, a test device, test equipment and a storage medium of an LED display screen control card. The test method comprises the following steps: acquiring a type signal of an LED display screen control card input in test equipment, and determining a test instruction corresponding to the type of the LED display screen control card; the test equipment runs the test instruction to generate a test signal, and the test signal is sent to the LED control board and the signal switching board to perform network communication test and data transmission test; acquiring a network test feedback signal fed back by the LED control board through the test equipment, acquiring a data transmission test feedback signal fed back by the signal adapter board, and acquiring a test result of the LED display screen control card according to the network test feedback signal and the data transmission test feedback signal; the test result is output through the test equipment, the LED display screen control card and the signal adapter plate can be tested at the same time, the operation is simple, and the test efficiency is high.
Description
Technical Field
The invention relates to the field of testing of LED display screen control cards, in particular to a testing method, a device, equipment and a storage medium of an LED display screen control card.
Background
The control card of the Micro LED or Mini LED display screen generally comprises an LED control board and a signal adapter board, wherein the LED control board receives video signals, and the video signals are enhanced and distributed to each LED display module for display through the signal adapter board. The LED control panel is generally provided with a network interface, a video input interface and an IO signal output port; the signal transfer board is of a type of HUB board, an IO input port of the signal transfer board is connected to an IO signal output port of the LED control board to receive video signals, the video signals are transferred and output to each LED display module in a one-to-many mode, driving capability of the video signals is enhanced, and transmission distance of the video signals is further; meanwhile, a power supply is provided for each LED display module, so that the LED display module does not need to be externally connected with a power supply.
In the research and development process, the testing of the LED control board and the signal adapter board is an indispensable step, and the current testing method is roughly divided into the following two types:
1. and splicing the LED control board, the signal adapter board and the LED display module into a complete LED display device to test the whole effect, and detecting whether the functions of the LED control board, the signal adapter board and the LED display module are normal. However, the testing method has the problems of large workload and low testing efficiency because each component is required to be spliced; and the test result is judged manually by workers, so that the problem of inaccurate test exists.
2. More than two LED control boards are interconnected, interfaces are tested mutually, test results are connected with a sending card through a network cable, the sending card is connected with a computer, and computer software receives the test results and displays the test results on a liquid crystal display. The test method can only detect whether the LED control board can work normally or not, but can not detect whether the signal adapter board can work normally or not; in addition, the test method needs to build a test platform by using a computer, and the test result display is received by software on the computer, so that the test is inconvenient.
Therefore, the two testing methods of the LED display screen control card have the problems of complex operation, low testing efficiency and the like.
Disclosure of Invention
In order to overcome the problems in the related art, the application provides a testing method, a testing device, testing equipment and a storage medium of an LED display screen control card.
According to a first aspect of an embodiment of the present invention, there is provided a method for testing an LED display control card, including the steps of:
acquiring a type signal of an LED display screen control card input in test equipment, and determining a test instruction corresponding to the type of the LED display screen control card; the LED display screen control card comprises an LED control board and a signal adapter board which are connected with each other; the LED control board is provided with a first network port, a second network port and an IO signal output port, and the signal adapter board is provided with an IO input port and a plurality of display data output ports; the IO input port of the signal adapter plate is connected to the IO signal output port of the LED control board, the first network port of the LED control board is connected with the first test network port of the test equipment, and the second network port of the LED control board is connected with the second test network port of the test equipment; the display data output port of the signal adapter plate is connected with the IO test port of the test equipment;
The test equipment runs the test instruction to generate a test signal, the test signal carries second character string data and third character string data, and the test signal is sent to the LED control board and the signal switching board to carry out network communication test and data transmission test;
acquiring a network test feedback signal fed back by the LED control board through the test equipment, acquiring a data transmission test feedback signal fed back by the signal adapter board, and acquiring a test result of the LED display screen control card according to the network test feedback signal and the data transmission test feedback signal;
outputting the test result through the test equipment;
wherein, the network communication test comprises the following steps:
the test signal is sent to a first network port of the LED control board through the test equipment, is transmitted to an FPGA of the LED control board and is stored in an internal memory of the FPGA of the LED control board, the FPGA of the LED control board is triggered to perform internal logic test, a first feedback signal is obtained through the first network port, and the first feedback signal is used as a network test feedback signal;
receiving and judging whether the first feedback signal is normal or not through the test equipment, obtaining a first network port test result, if the first network port test is qualified, sending a first network port test qualified signal to the LED control board, receiving a second feedback signal returned by the LED control board through a second network port, and taking the second feedback signal as a network test feedback signal;
Receiving and judging whether the second feedback signal is normal or not through the test equipment, and obtaining a second network port test result;
the data transmission testing method comprises the following steps:
triggering the FPGA of the LED control board to carry out CRC (cyclic redundancy check) on the SDRAM of the LED control board, and obtaining first reverse-order character string data when the SDRAM of the LED control board is qualified; triggering the FPGA of the LED control board to perform dislocation operation on the first reverse-order character string data to obtain a plurality of groups of different first dislocation character string data, and transmitting the plurality of groups of different first dislocation character string data to a display signal driving chip on the signal switching board; triggering the display signal driving chip to distribute a plurality of groups of different first dislocation character string data to each display data output port, and returning the data transmission test feedback signals;
when CRC (cyclic redundancy check) of SDRAM of the LED control board is failed, triggering FPGA of the LED control board to perform dislocation operation on third character string data carried by the test signal to obtain a plurality of groups of different second dislocation character string data, and transmitting the plurality of groups of different second dislocation character string data to a display signal driving chip on the signal switching board; triggering the display signal driving chip to distribute a plurality of groups of different second dislocation character string data to each display data output port, and returning the data transmission test feedback signals;
Receiving and judging whether the data transmission test feedback signal is normal or not through test equipment, and obtaining a data transmission test result;
and when the data transmission test feedback signal is normal, judging whether the character string data carried by the data transmission test feedback signal is first dislocation character string data or second dislocation character string data, if the character string data is the first dislocation character string data, judging that the CRC of the SDRAM is qualified, and if the character string data is the second dislocation character string data, judging that the CRC of the SDRAM is unqualified.
The testing method of the LED display screen control card provided by the embodiment of the invention can be used for simultaneously carrying out network testing and data transmission testing on the LED control board and the signal adapter board, and has the advantages of high testing efficiency and simplicity in operation.
In an alternative embodiment, the method for generating the test signal by the test device and sending the test signal to the first network port of the LED control board, transmitting the test signal to the FPGA of the LED control board and storing the test signal in the internal memory of the FPGA of the LED control board is as follows:
and generating RGMII test signals through the test equipment, converting the RGMII test signals into GMII signals, sending the GMII signals to a first network port of the LED control board, transmitting the GMII signals to a first PHY chip of the LED control board, converting the GMII signals into RGMII signals through the first PHY chip, transmitting the RGMII signals to an FPGA of the LED control board, triggering the FPGA of the LED control board to receive the RGMII signals, analyzing the RGMII signals to obtain test data, and storing the test data to an internal memory.
In an alternative embodiment, the test signal carries first string data; the first character string data comprises at least two conventional codes and a check code;
triggering the FPGA of the LED control panel to perform internal logic test, and obtaining a first feedback signal through the first network port comprises the following steps: and triggering the FPGA of the LED control panel to perform sum operation on all conventional codes in the first character string data to obtain a conventional code sum, and obtaining a first feedback signal through the first network port.
In an alternative embodiment, the method for triggering the FPGA of the LED control board to perform CRC on SDRAM of the LED control board comprises the following steps:
triggering the FPGA of the LED control board to transmit a test signal to the SDRAM of the LED control board to initialize the SDRAM;
triggering the FPGA of the LED control board to write second character string data carried by the test signal into the SDRAM according to the row-column address of the SDRAM;
triggering the FPGA of the LED control panel to read out the second character string data written into the SDRAM according to the reverse order, and obtaining the first reverse order character string data when the second character string data can be read out in the reverse order.
According to a second aspect of the embodiment of the present invention, there is provided a test device for an LED display screen control card, including:
The instruction determining module is used for acquiring type signals of the LED display screen control card input in the testing equipment and determining a testing instruction corresponding to the type of the LED display screen control card; the LED display screen control card comprises an LED control board and a signal adapter board which are connected with each other; the LED control board is provided with a first network port, a second network port and an IO signal output port, and the signal adapter board is provided with an IO input port and a plurality of display data output ports; the IO input port of the signal adapter plate is connected to the IO signal output port of the LED control board, the first network port of the LED control board is connected with the first test network port of the test equipment, and the second network port of the LED control board is connected with the second test network port of the test equipment; the display data output port of the signal adapter plate is connected with the IO test port of the test equipment;
the test module is used for generating a test signal by running the test instruction through the test equipment, wherein the test signal carries second character string data and third character string data, and the test signal is sent to the LED control board and the signal adapter board through the test equipment to carry out test network communication test and data transmission test; the network communication test comprises the following steps: the test signal is sent to a first network port of the LED control board through the test equipment, is transmitted to an FPGA of the LED control board and is stored in an internal memory of the FPGA of the LED control board, the FPGA of the LED control board is triggered to perform internal logic test, a first feedback signal is obtained through the first network port, and the first feedback signal is used as a network test feedback signal; receiving and judging whether the first feedback signal is normal or not through the test equipment, obtaining a first network port test result, if the first network port test is qualified, sending a first network port test qualified signal to the LED control board, receiving a second feedback signal returned by the LED control board through a second network port, and taking the second feedback signal as a network test feedback signal; receiving and judging whether the second feedback signal is normal or not through the test equipment, and obtaining a second network port test result; the data transmission testing method comprises the following steps: triggering the FPGA of the LED control board to carry out CRC (cyclic redundancy check) on the SDRAM of the LED control board, and obtaining first reverse-order character string data when the SDRAM of the LED control board is qualified; triggering the FPGA of the LED control board to perform dislocation operation on the first reverse-order character string data to obtain a plurality of groups of different first dislocation character string data, and transmitting the plurality of groups of different first dislocation character string data to a display signal driving chip on the signal switching board; triggering the display signal driving chip to distribute a plurality of groups of different first dislocation character string data to each display data output port, and returning the data transmission test feedback signals; when CRC (cyclic redundancy check) of SDRAM of the LED control board is failed, triggering FPGA of the LED control board to perform dislocation operation on third character string data carried by the test signal to obtain a plurality of groups of different second dislocation character string data, and transmitting the plurality of groups of different second dislocation character string data to a display signal driving chip on the signal switching board; triggering the display signal driving chip to distribute a plurality of groups of different second dislocation character string data to each display data output port, and returning the data transmission test feedback signals; receiving and judging whether character string data carried by the data transmission test feedback signal is first dislocation character string data or second dislocation character string data through test equipment, judging whether CRC (cyclic redundancy check) of the SDRAM is qualified if the character string data is the first dislocation character string data, and judging whether CRC of the SDRAM is unqualified if the character string data is the second dislocation character string data, so as to obtain a data transmission test result;
The test result acquisition module is used for acquiring a network test feedback signal fed back by the LED control panel through the test equipment, acquiring a data transmission test feedback signal fed back by the signal adapter plate, judging whether the network test feedback signal and the data transmission test feedback signal are normal or not, and acquiring a test result of the LED display screen control card;
and the test result output module is used for outputting the test result through the test equipment.
According to a third aspect of an embodiment of the present invention, there is provided a test apparatus for an LED display control card, the test apparatus including a processor and a memory; wherein the memory stores a computer program adapted to be loaded by the processor and to perform the method of testing a LED display screen control card as described in any one of the above.
According to a fourth aspect of embodiments of the present invention, there is provided a computer-readable storage medium having a computer program stored thereon, wherein the computer program, when executed by a processor, implements the method for testing the LED display screen control card according to any one of the above.
By the aid of the technical scheme, the LED control board and the signal adapter plate are connected and then connected with the testing equipment, the testing equipment sends testing signals to the LED control board and the signal adapter plate, network communication testing is conducted on the LED control board, meanwhile, data transmission testing is conducted on the LED control board and the signal adapter plate, operation is simple, and testing efficiency is high.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the invention as claimed.
For a better understanding and implementation, the present invention is described in detail below with reference to the drawings.
Drawings
FIG. 1 is a flowchart of a method for testing an LED display screen control card according to an embodiment of the present invention;
fig. 2 is a flowchart of a network communication testing method in step S2 according to an embodiment of the present invention;
fig. 3 is a flowchart of a data transmission testing method in step S2 according to an embodiment of the present invention;
FIG. 4 is a flowchart of a CRC validation method according to an embodiment of the invention in step S221;
FIG. 5 is a schematic diagram of a testing apparatus according to an embodiment of the present invention;
fig. 6 is a schematic structural diagram of a test apparatus according to an embodiment of the present invention.
Detailed Description
Reference will now be made in detail to exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, the same numbers in different drawings refer to the same or similar elements, unless otherwise indicated. The implementations described in the following exemplary examples do not represent all implementations consistent with the invention. Rather, they are merely examples of apparatus and methods consistent with aspects of the invention as detailed in the accompanying claims.
The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used in this specification and the appended claims, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It should also be understood that the term "and/or" as used herein refers to and encompasses any or all possible combinations of one or more of the associated listed items.
It should be understood that although the terms first, second, third, etc. may be used herein to describe various information, these information should not be limited by these terms. These terms are only used to distinguish one type of information from another. For example, first information may also be referred to as second information, and similarly, second information may also be referred to as first information, without departing from the scope of the invention. The word "if"/"if" as used herein may be interpreted as "at … …" or "at … …" or "in response to a determination", depending on the context.
Please refer to fig. 1, which is a flowchart of a testing method of an LED (Light-Emitting-Diode) display screen control card according to an embodiment of the present invention. The embodiment can be applied to the implementation of the test of the LED display screen control card, the method can be implemented by an LED display screen control card testing device, the device can be implemented in a software and/or hardware mode, and the device can be configured in equipment, for example.
The testing method of the LED display screen control card in the embodiment is realized through a preset testing program in testing equipment, wherein the testing equipment is portable testing equipment. The LED display screen control card comprises an LED control board and a signal adapter plate, wherein the LED control board is provided with a first network port, a second network port and an IO signal output port; the signal patch panel has an IO input port and a plurality of display data output ports. During testing, the IO input port of the signal adapter plate is connected to the IO signal output port of the LED control panel; connecting a first network port of the LED control panel with a first test network port of the test equipment, and connecting a second network port of the LED control panel with a second test network port of the test equipment; and connecting the display data output port of the signal adapter plate with the IO test port of the test equipment, and testing the LED display screen control card by the following test method after the hardware connection is completed.
According to one aspect of the embodiment of the present invention, as shown in fig. 1, the method for testing the LED display screen control card includes the following steps:
s1: acquiring a type signal of an LED display screen control card input in test equipment, and determining a test instruction corresponding to the type of the LED display screen control card, wherein the LED display screen control card comprises an LED control board and a signal adapter board which are connected with each other;
S2: running the test instruction through the test equipment to generate a test signal, and sending the test signal to the LED control board and the signal switching board through the test equipment to perform network communication test and data transmission test;
s3: acquiring a network test feedback signal fed back by the LED control board through the test equipment, acquiring a data transmission test feedback signal fed back by the signal adapter board, and acquiring a test result of the LED display screen control card according to the network test feedback signal and the data transmission test feedback signal;
s4: and outputting the test result through the test equipment.
In an alternative embodiment, the LED display control cards are of multiple types, each type of LED display control card having a corresponding test program. The selection mode of the test instruction can be as follows: and receiving a type signal of the LED display screen control card input by a user, and determining a test instruction corresponding to the type of the LED display screen control card. Specifically, a user inputs a control card type signal through an LED display screen control card type selection knob on a test device, a test instruction corresponding to the type of the LED display screen control card is stored in the test device, after the LED display screen control card type selection knob is twisted for a certain angle, a first type signal is sent to the FPGA of the test device, and the test device FPGA (Field Programmable Gate Array) receives and determines to select the test instruction matched with the first type signal to run. In addition, the selection mode of the test instruction can be as follows: after the LED control board is connected with the testing equipment, the type of the LED display screen control card connected with the testing equipment is detected, and a testing instruction corresponding to the type of the LED display screen control card is determined.
In an alternative embodiment, the LED control board has two network interfaces and an FPGA of the LED control board, which are a first network port and a second network port, respectively, and the first network port is connected to the FPGA of the LED control board through a first network chip; the second network port is connected to the FPGA of the LED control panel through a second network chip; the first network chip and the second network chip are PHY (Physical Layer) chips. In the process of testing the first network port, a test signal is required to be sent to the FPGA of the LED control board through the first network chip, whether the received test signal is normal or not is detected through the FPGA of the LED control board, and then a first feedback signal is output from the first network port and fed back to a processor of the test equipment. When the first network port is tested to be qualified, the processor of the testing equipment can send a signal which is tested to be qualified by the first network port to the FPGA of the LED control board, and the FPGA of the LED control board generates a second feedback signal and outputs the second feedback signal through the second network port to be fed back to the processor of the testing equipment. Therefore, in the network communication test process of the LED display screen control card, the test of the first network port, the first network chip, the FPGA of the LED control panel, the second network port and the second network chip is included.
Please refer to fig. 2, which is a flowchart illustrating a network communication testing method in step S2 according to an embodiment of the present invention.
In an alternative embodiment, in the testing in step S2, the network communication testing method includes the steps of:
s211: the test signal is sent to a first network port of the LED control board through the test equipment, is transmitted to an FPGA of the LED control board and is stored in an internal memory of the FPGA of the LED control board, the FPGA of the LED control board is triggered to perform internal logic test, a first feedback signal is obtained through the first network port, and the first feedback signal is used as a network test feedback signal;
s212: receiving and judging whether the first feedback signal is normal or not through the test equipment, obtaining a first network port test result, if the first network port test is qualified, sending a first network port test qualified signal to the LED control board, receiving a second feedback signal returned by the LED control board through a second network port, and taking the second feedback signal as a network test feedback signal;
s213: and receiving and judging whether the second feedback signal is normal or not through the test equipment to obtain a second network port test result.
And the testing equipment receives and judges whether the first feedback signal and the second feedback signal are normal or not, a first network port testing result and a second network port testing result are obtained, and the first network port testing result and the second network port testing result are output to a display screen for display.
In an alternative embodiment, the network communication is qualified when the data carried by the first feedback signal and the second feedback signal are consistent with the data carried by the sent test signal.
In other embodiments, the first feedback signal and the second feedback signal may be formed after the specific operation is performed by the FPGA of the LED control board, and whether the first feedback signal and the second feedback signal are normal or not may be determined after the first feedback signal and the second feedback signal are received.
According to the embodiment, the first network port, the first network chip, the FPGA of the LED control board, the second network chip and the second network port are tested through the network testing method, the testing process is simple to operate, the testing result can be automatically judged, manual judgment is not needed, and a testing platform is not needed to be built.
In an alternative embodiment, the method for generating the test signal by the test device and sending the test signal to the first network port of the LED control board, transmitting the test signal to the FPGA of the LED control board and storing the test signal in the internal memory of the FPGA of the LED control board is as follows:
RGMII (Reduced Gigabit Media Independent Interface, gigabit media independent interface) test signals are generated through the test equipment and converted into GMII (Gigabit Medium Independent Interface, gigabit media independent interface) signals, the GMII signals are sent to a first network port of the LED control board and transmitted to a first PHY chip of the LED control board, the GMII signals are converted into RGMII signals through the first PHY chip and transmitted to an FPGA of the LED control board, the RGMII signals are triggered to be received by the FPGA of the LED control board, and test data are obtained through analysis and stored in an internal memory.
In an alternative embodiment, the test signal carries first string data; the first character string data comprises at least two conventional codes and a check code; triggering the FPGA of the LED control panel to perform internal logic test, and obtaining a first feedback signal through the first network port comprises the following steps: and triggering the FPGA of the LED control panel to perform sum operation on all conventional codes in the first character string data to obtain a conventional code sum, and obtaining a first feedback signal through the first network port.
The first feedback signal carries conventional code sum information and check code information, the test equipment FPGA receives the first feedback signal, recognizes the conventional code sum signal, compares the conventional code sum with the check code, judges whether the conventional code sum is consistent with the check code, if so, the internal logic test of the FPGA of the LED control board is qualified, and if not, the internal logic test of the FPGA of the LED control board is failed. If the first character string data is 01236, the first four bits 0123 are regular codes, the last 6 bits are check codes, the first four bits are summed, if the sum of the first 4 bits is 6, the internal logic test is qualified, and if the sum of the first 4 bits is not 6, the internal logic test is unqualified. After the internal logic test is finished, a first feedback signal is generated and returned, the test of the second network port and the second network chip can be performed only after the test of the first network port and the first network chip is qualified, otherwise, the circuit between the first network port and the FPGA of the first network chip and the LED control board is required to be overhauled until the test of the first network port and the first network chip is qualified.
After the network communication test of the LED control board is finished, if the network communication test is qualified, the data transmission test is required to be continued, and if the network communication test is unqualified, the network communication line of the LED control board is required to be overhauled first until the network communication test is qualified, and then the data transmission test between the LED control board and the signal adapter board is performed. Specifically, the data transmission test includes a test of a signal output port of the LED control board, a test of a signal input port of the signal patch panel, a test of a display signal driving chip, and a test of a display data output port.
Please refer to fig. 3, which is a flowchart illustrating a data transmission testing method in step S2 according to an embodiment of the present invention.
In an alternative embodiment, the test signal carries second string data; in the test in step S2, the data transmission test method includes the steps of:
s221: triggering the FPGA of the LED control board to carry out CRC (cyclic redundancy check) on the SDRAM of the LED control board, and obtaining first reverse-order character string data when the SDRAM of the LED control board is qualified;
s222: triggering the FPGA of the LED control board to perform dislocation operation on the first reverse-order character string data to obtain a plurality of groups of different first dislocation character string data, and transmitting the plurality of groups of different first dislocation character string data to a display signal driving chip on the signal switching board;
S223: triggering the display signal driving chip to distribute a plurality of groups of different first dislocation character string data to each display data output port, and returning the data transmission test feedback signals;
s224: and receiving and judging whether the data transmission test feedback signal is normal or not through test equipment to obtain a data transmission test result.
Please refer to fig. 4, which is a flowchart illustrating a CRC checking method in step S221 according to an embodiment of the present invention.
In an alternative embodiment, in step S221, a method for triggering the FPGA of the LED control board to perform CRC check on the SDRAM (synchronous dynamic random-access memory, abbreviated as SDRAM) of the LED control board includes the steps of:
s2211: triggering the FPGA of the LED control board to transmit a test signal to the SDRAM of the LED control board to initialize the SDRAM;
s2212: triggering the FPGA of the LED control board to write second character string data carried by the test signal into the SDRAM according to the row-column address of the SDRAM;
s2213: triggering the FPGA of the LED control panel to read out the second character string data written into the SDRAM according to the reverse order, and obtaining the first reverse order character string data when the second character string data can be read out in the reverse order.
Specifically, when the second string data can be read out in the reverse order, the reverse order is completed when the first reverse order string data is obtained, the SDRAM is judged to work normally at the moment, and if the first reverse order string data cannot be obtained, the reverse order cannot be completed, and at the moment, the SDRAM is judged to work abnormally. For example, the second string data is 01236, which is written into SDRAM, if SDRAM can work normally, the data read out in reverse order is 32106, if the data read out in reverse order is not 32106 but other messy code, it indicates that SDRAM works abnormally.
In an alternative embodiment, the test signal further carries third string data;
when CRC (cyclic redundancy check) of SDRAM of the LED control board is failed, triggering FPGA of the LED control board to perform dislocation operation on third character string data carried by the test signal to obtain a plurality of groups of different second dislocation character string data, and transmitting the plurality of groups of different second dislocation character string data to a display signal driving chip on the signal switching board;
triggering the display signal driving chip to distribute a plurality of groups of different second dislocation character string data to each display data output port, and returning the data transmission test feedback signals.
And when the data transmission test feedback signal is received and judged to be normal or not through the test equipment, judging whether the character string data carried by the data transmission test feedback signal is first dislocation character string data or second dislocation character string data, if the character string data is the first dislocation character string data, judging that the CRC of the SDRAM is qualified, and if the character string data is the second dislocation character string data, judging that the CRC of the SDRAM is unqualified.
The dislocation operation method comprises the following steps: for example, a set of character string data is 01236, and the character string data after performing the dislocation operation may be 10236, 02136, 01326, 02316, or 10326. And when one group of character string data has more digits, analogizing according to the dislocation operation method to obtain a plurality of groups of dislocation character string data. In general, when the signal adapter board has a plurality of display data output ports, each display data output port is provided with a group of unique character string data after dislocation operation, so that at least the data of two adjacent IO ports are ensured to be different. When a certain group of character string data in the received data transmission test feedback signal is inconsistent with the character string data output by the corresponding display data output port, the corresponding display data output port can be judged to work abnormally, and the specific data of the IO ports can be judged to be abnormal according to the dislocation of the character string data, so that the judgment of short circuit or disconnection of a certain IO port of the display data output port is facilitated, and the accurate investigation can be realized.
According to the testing method provided by the embodiment of the invention, the network communication test and the data transmission test can be simultaneously carried out on the LED control board and the signal adapter board, the operation is simple, the testing efficiency is high, a testing platform is not required to be built, the judging result does not depend on manual judgment, and the accuracy is high.
According to a second aspect of the embodiment of the invention, a testing device for an LED display screen control card is also provided.
Please refer to fig. 5, which is a schematic diagram of a testing apparatus according to an embodiment of the present invention.
The test device comprises:
the instruction determining module 1 is used for acquiring a type signal of the LED display screen control card input in the testing equipment and determining a testing instruction corresponding to the type of the LED display screen control card;
the test module 2 is used for generating a test signal by running the test instruction through the test equipment, and sending the test signal to the LED control board and the signal adapter board through the test equipment to perform test network communication test and data transmission test;
the test result acquisition module 3 is used for acquiring a network test feedback signal fed back by the LED control panel through the test equipment, acquiring a data transmission test feedback signal fed back by the signal adapter plate, judging whether the network test feedback signal and the data transmission test feedback signal are normal or not, and acquiring a test result of the LED display screen control card;
And the test result output module 4 is used for outputting the test result through the test equipment.
It should be noted that, when the test device provided in the above embodiment executes the test method of the LED display control card, only the division of the above functional modules is used for illustration, in practical application, the above functional allocation may be completed by different functional modules according to needs, that is, the internal structure of the device is divided into different functional modules, so as to complete all or part of the functions described above. In addition, the test device provided in the above embodiment and the test method embodiment of the LED display control card belong to the same concept, and the detailed process is shown in the embodiment, which is not repeated here.
According to a third aspect of the embodiment of the invention, a test device for an LED display control card is also provided.
Please refer to fig. 6, which is a schematic diagram illustrating a structure of a testing apparatus according to an embodiment of the present invention.
The test apparatus 100 comprises a processor 101 and a memory 102; wherein the memory 102 stores a computer program adapted to be loaded by the processor 101 and to perform the method of testing the LED display control card as described above.
In an alternative embodiment, the test apparatus further comprises a display screen 103, a first test portal, a second test portal, and an IO test port. When the testing equipment is used for testing the LED display screen control board, the display screen is connected with the processor and used for displaying the testing result of the LED display screen control card; connecting the first test network port with a first network port of the LED display screen control card; connecting the second test network port with a second network port of the LED display screen control card; and connecting the IO test port with a display data output port of the signal adapter plate.
According to a fourth aspect of embodiments of the present invention, there is also provided a computer-readable storage medium having stored thereon a computer program which, when executed by a processor, implements a method of testing an LED display control card as described above.
By applying the technical scheme, the LED control board and the signal adapter board are connected with the testing equipment, the testing signals are sent to the LED control board and the signal adapter board through the testing method, network communication of the LED control board is tested, meanwhile, data transmission testing is conducted on the LED control board and the signal adapter board, the operation is simple, the testing efficiency is high, fault positioning is accurate, and a testing platform is not required to be built.
The above examples illustrate only a few embodiments of the invention, which are described in detail and are not to be construed as limiting the scope of the invention. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the invention, which are all within the scope of the invention.
Claims (7)
- The test method of the LED display screen control card is characterized by comprising the following steps of:acquiring a type signal of an LED display screen control card input in test equipment, and determining a test instruction corresponding to the type of the LED display screen control card; the LED display screen control card comprises an LED control board and a signal adapter board which are connected with each other; the LED control board is provided with a first network port, a second network port and an IO signal output port, and the signal adapter board is provided with an IO input port and a plurality of display data output ports; the IO input port of the signal adapter plate is connected to the IO signal output port of the LED control board, the first network port of the LED control board is connected with the first test network port of the test equipment, and the second network port of the LED control board is connected with the second test network port of the test equipment; the display data output port of the signal adapter plate is connected with the IO test port of the test equipment;The test equipment runs the test instruction to generate a test signal, the test signal carries second character string data and third character string data, and the test signal is sent to the LED control board and the signal switching board to carry out network communication test and data transmission test;acquiring a network test feedback signal fed back by the LED control board through the test equipment, acquiring a data transmission test feedback signal fed back by the signal adapter board, and acquiring a test result of the LED display screen control card according to the network test feedback signal and the data transmission test feedback signal;outputting the test result through the test equipment;wherein, the network communication test comprises the following steps:the test signal is sent to a first network port of the LED control board through the test equipment, is transmitted to an FPGA of the LED control board and is stored in an internal memory of the FPGA of the LED control board, the FPGA of the LED control board is triggered to perform internal logic test, a first feedback signal is obtained through the first network port, and the first feedback signal is used as a network test feedback signal;receiving and judging whether the first feedback signal is normal or not through the test equipment, obtaining a first network port test result, if the first network port test is qualified, sending a first network port test qualified signal to the LED control board, receiving a second feedback signal returned by the LED control board through a second network port, and taking the second feedback signal as a network test feedback signal;Receiving and judging whether the second feedback signal is normal or not through the test equipment, and obtaining a second network port test result;the data transmission testing method comprises the following steps:triggering the FPGA of the LED control board to carry out CRC (cyclic redundancy check) on the SDRAM of the LED control board, and obtaining first reverse-order character string data when the SDRAM of the LED control board is qualified; triggering the FPGA of the LED control board to perform dislocation operation on the first reverse-order character string data to obtain a plurality of groups of different first dislocation character string data, and transmitting the plurality of groups of different first dislocation character string data to a display signal driving chip on the signal switching board; triggering the display signal driving chip to distribute a plurality of groups of different first dislocation character string data to each display data output port, and returning the data transmission test feedback signals;when CRC (cyclic redundancy check) of SDRAM of the LED control board is failed, triggering FPGA of the LED control board to perform dislocation operation on third character string data carried by the test signal to obtain a plurality of groups of different second dislocation character string data, and transmitting the plurality of groups of different second dislocation character string data to a display signal driving chip on the signal switching board; triggering the display signal driving chip to distribute a plurality of groups of different second dislocation character string data to each display data output port, and returning the data transmission test feedback signals;Receiving and judging whether the data transmission test feedback signal is normal or not through test equipment, and obtaining a data transmission test result;and when the data transmission test feedback signal is normal, judging whether the character string data carried by the data transmission test feedback signal is first dislocation character string data or second dislocation character string data, if the character string data is the first dislocation character string data, judging that the CRC of the SDRAM is qualified, and if the character string data is the second dislocation character string data, judging that the CRC of the SDRAM is unqualified.
- 2. The method for testing the control card of the LED display screen according to claim 1, wherein the method for generating the test signal by the test device and sending the test signal to the first network port of the LED control board, transmitting the test signal to the FPGA of the LED control board and storing the test signal in the internal memory of the FPGA of the LED control board is as follows:and generating RGMII test signals through the test equipment, converting the RGMII test signals into GMII signals, sending the GMII signals to a first network port of the LED control board, transmitting the GMII signals to a first PHY chip of the LED control board, converting the GMII signals into RGMII signals through the first PHY chip, transmitting the RGMII signals to an FPGA of the LED control board, triggering the FPGA of the LED control board to receive the RGMII signals, analyzing the RGMII signals to obtain test data, and storing the test data to an internal memory.
- 3. The method for testing the LED display control card of claim 1, wherein the test signal carries first string data; the first character string data comprises at least two conventional codes and a check code;triggering the FPGA of the LED control panel to perform internal logic test, and obtaining a first feedback signal through the first network port comprises the following steps: and triggering the FPGA of the LED control panel to perform sum operation on all conventional codes in the first character string data to obtain a conventional code sum, and obtaining a first feedback signal through the first network port.
- 4. The method for testing the LED display screen control card according to claim 1, wherein the method for triggering the FPGA of the LED control board to perform CRC verification on the SDRAM of the LED control board comprises the steps of:triggering the FPGA of the LED control board to transmit a test signal to the SDRAM of the LED control board to initialize the SDRAM;triggering the FPGA of the LED control board to write second character string data carried by the test signal into the SDRAM according to the row-column address of the SDRAM;triggering the FPGA of the LED control panel to read out the second character string data written into the SDRAM according to the reverse order, and obtaining the first reverse order character string data when the second character string data can be read out in the reverse order.
- Testing arrangement of LED display screen control card, its characterized in that includes:the instruction determining module is used for acquiring type signals of the LED display screen control card input in the testing equipment and determining a testing instruction corresponding to the type of the LED display screen control card; the LED display screen control card comprises an LED control board and a signal adapter board which are connected with each other; the LED control board is provided with a first network port, a second network port and an IO signal output port, and the signal adapter board is provided with an IO input port and a plurality of display data output ports; the IO input port of the signal adapter plate is connected to the IO signal output port of the LED control board, the first network port of the LED control board is connected with the first test network port of the test equipment, and the second network port of the LED control board is connected with the second test network port of the test equipment; the display data output port of the signal adapter plate is connected with the IO test port of the test equipment;the test module is used for generating a test signal by running the test instruction through the test equipment, wherein the test signal carries second character string data and third character string data, and the test signal is sent to the LED control board and the signal adapter board through the test equipment to carry out test network communication test and data transmission test; the network communication test comprises the following steps: the test signal is sent to a first network port of the LED control board through the test equipment, is transmitted to an FPGA of the LED control board and is stored in an internal memory of the FPGA of the LED control board, the FPGA of the LED control board is triggered to perform internal logic test, a first feedback signal is obtained through the first network port, and the first feedback signal is used as a network test feedback signal; receiving and judging whether the first feedback signal is normal or not through the test equipment, obtaining a first network port test result, if the first network port test is qualified, sending a first network port test qualified signal to the LED control board, receiving a second feedback signal returned by the LED control board through a second network port, and taking the second feedback signal as a network test feedback signal; receiving and judging whether the second feedback signal is normal or not through the test equipment, and obtaining a second network port test result; the data transmission testing method comprises the following steps: triggering the FPGA of the LED control board to carry out CRC (cyclic redundancy check) on the SDRAM of the LED control board, and obtaining first reverse-order character string data when the SDRAM of the LED control board is qualified; triggering the FPGA of the LED control board to perform dislocation operation on the first reverse-order character string data to obtain a plurality of groups of different first dislocation character string data, and transmitting the plurality of groups of different first dislocation character string data to a display signal driving chip on the signal switching board; triggering the display signal driving chip to distribute a plurality of groups of different first dislocation character string data to each display data output port, and returning the data transmission test feedback signals; when CRC (cyclic redundancy check) of SDRAM of the LED control board is failed, triggering FPGA of the LED control board to perform dislocation operation on third character string data carried by the test signal to obtain a plurality of groups of different second dislocation character string data, and transmitting the plurality of groups of different second dislocation character string data to a display signal driving chip on the signal switching board; triggering the display signal driving chip to distribute a plurality of groups of different second dislocation character string data to each display data output port, and returning the data transmission test feedback signals; receiving and judging whether character string data carried by the data transmission test feedback signal is first dislocation character string data or second dislocation character string data through test equipment, judging whether CRC (cyclic redundancy check) of the SDRAM is qualified if the character string data is the first dislocation character string data, and judging whether CRC of the SDRAM is unqualified if the character string data is the second dislocation character string data, so as to obtain a data transmission test result;The test result acquisition module is used for acquiring a network test feedback signal fed back by the LED control panel through the test equipment, acquiring a data transmission test feedback signal fed back by the signal adapter plate, judging whether the network test feedback signal and the data transmission test feedback signal are normal or not, and acquiring a test result of the LED display screen control card;and the test result output module is used for outputting the test result through the test equipment.
- 6. The test equipment of the LED display screen control card is characterized by comprising a processor and a memory; wherein the memory stores a computer program adapted to be loaded by the processor and to perform the method of testing the LED display control card of any one of claims 1 to 4.
- 7. A computer-readable storage medium, on which a computer program is stored, characterized in that the computer program, when executed by a processor, implements a method for testing an LED display control card according to any one of claims 1 to 4.
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| CN112233612B (en) * | 2020-10-28 | 2022-04-01 | 冠捷电子科技(福建)有限公司 | Automatic judgment device for LED display screen receiving card |
| CN112634824A (en) * | 2020-12-31 | 2021-04-09 | 深圳市思坦科技有限公司 | Mini-LED display screen splicing display driving system and driving display method |
| CN113671350B (en) * | 2021-08-23 | 2024-02-27 | 集创北方(珠海)科技有限公司 | Testing device and electronic equipment |
| CN114844800B (en) * | 2022-04-28 | 2024-04-23 | 用友汽车信息科技（上海）股份有限公司 | Abnormality detection method and device for equipment, readable storage medium and electronic equipment |
| CN119652796B (en) * | 2024-12-10 | 2025-07-11 | 浙江新迪光电科技有限公司 | A LED display HUB board communication detection method and system |
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