Multifunctional adapter plate based on USB Type C interface and test method thereof

Abstract

The invention provides a multifunctional adapter plate based on a USB Type C interface and a test method thereof, and the adapter plate comprises the USB Type C interface which is in communication connection with a mainboard of equipment to be tested; the USB 2.0 interface is used for establishing a data transmission channel with a mainboard of the equipment to be tested so as to execute firmware burning or application program debugging operation; the power supply unit is used for distributing and managing a working power supply for the adapter plate and the to-be-tested equipment mainboard; the function unit comprises a serial port unit for establishing a debugging serial port link with the mainboard of the to-be-tested equipment so as to support monitoring and debugging of the running state of the to-be-tested equipment; the infrared receiving unit receives the infrared remote control signal and transmits the infrared remote control signal to the to-be-tested equipment mainboard so as to test the infrared remote control operation of the to-be-tested equipment mainboard; and the reset unit triggers a reset control signal to the mainboard of the to-be-tested equipment so as to test the function of restarting or restoring factory settings of the to-be-tested equipment, thereby solving the problems of low disassembly and debugging efficiency of the to-be-tested equipment, complex operation and risk of damaging the equipment in the prior art.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of electronic device testing, and in particular to a multifunctional adapter plate based on a USB Type C interface and a testing method thereof. BACKGROUND

[0002] With the continuous improvement of chip manufacturing processes, modern electronic devices are increasingly developing towards high integration and delicate miniaturization. At present, the structural design of electronic devices such as smart TV sticks, OTT set-top boxes and cameras is overall small and compact. Under this trend, the USB Type C interface has been widely used in various electronic devices due to its small size, non-directional plugging experience, and diversified functions such as supporting high-power power supply and high-speed data transmission.

[0003] However, the compact design of the device also brings serious testing and debugging problems. At present, the testing of such devices usually relies on a cumbersome process: engineers not only need to disassemble the whole machine, but often need to temporarily solder debugging cables or connectors on the motherboard to access serial ports, infrared receivers and other testing tools. This traditional method is inefficient, and the disassembly and soldering process is extremely easy to cause physical damage to the device shell, motherboard or peripheral components due to improper operation, resulting in unnecessary economic losses. In addition, this method is completely unable to meet the needs of batch and rapid testing on the production line, severely restricting production rhythm and product delivery efficiency.

[0004] Therefore, the industry urgently needs a non-invasive debugging and testing solution that can eliminate the disassembly and soldering process and achieve plug-and-play testing to overcome the many deficiencies in the prior art. SUMMARY

[0005] In view of the deficiencies in the prior art, the present application provides a multifunctional adapter plate based on a USB Type C interface and a testing method thereof, aiming to solve the problem that electronic devices in the prior art have no reserved debugging interface due to compact structure, resulting in the need to disassemble the device or solder cables to access the debugging interface, which is a cumbersome process and easy to cause physical damage to the device, and unable to efficiently perform joint testing of multiple functions.

[0006] To achieve the above-mentioned purpose, in a first aspect, the present application provides a multifunctional adapter plate based on a USB Type C interface, which is used to connect to a device under test motherboard to perform function testing on the device under test motherboard, the adapter plate comprising: a USB Type C interface for establishing a communication connection with the device under test motherboard; a USB 2.0 interface for establishing a data transmission channel with the device under test motherboard to perform firmware burning or application debugging operations; a power supply unit for distributing and managing working power for the adapter board and the main board of the device under test; a function unit comprising a serial port unit, an infrared receiving unit and a reset unit connected with the USB Type C interface of the adapter board, the function unit being configured to operate with the main board of the device under test through the USB Type C interface to perform one or more test functions, including: the serial port unit being configured to establish a debugging serial port link with the main board of the device under test to support monitoring and debugging of its running state; the infrared receiving unit being configured to receive an infrared remote control signal and transmit it to the main board of the device under test to test its infrared remote control operation; the reset unit being configured to trigger a reset control signal to the main board of the device under test to test its restart or factory setting recovery function.

[0007] As a further solution, the USB Type C interface comprises a power pin group, a data pin group and a custom function pin group; the power pin group comprises a VBUS pin, a GND pin and a CC pin; wherein the VBUS pin, the GND pin and the CC pin on the adapter board correspond to and are connected to the VBUS pin, the GND pin and the CC pin on the Type C interface of the main board of the device under test, respectively, to establish power management and connection configuration; the data pin group comprises a USB 2.0 data pin; wherein the USB 2.0 data pin on the adapter board corresponds to and is connected to the USB 2.0 data pin on the Type C interface of the main board of the device under test, to transmit USB 2.0 data signals; the custom function pin group comprises a TX pin, an RX pin and an SBU pin; wherein the TX pin and the RX pin on the adapter board correspond to and are connected to the TX pin and the RX pin on the Type C interface of the main board of the device under test, respectively, and are connected with the serial port unit to realize serial port communication; the SBU pin on the adapter board corresponds to and is connected to the SBU pin on the Type C interface of the main board of the device under test, and is connected with the infrared receiving unit to transmit infrared signals; the SBU pin on the adapter board corresponds to and is connected to the SBU pin on the Type C interface of the main board of the device under test, and is connected with the reset unit to transmit reset signals.

[0008] As a further solution, the power supply unit comprises a voltage conversion circuit, an input end of which is connected with the DC input socket, and an output end of which is connected with the power pin of the USB Type C interface; wherein the power supply unit is configured to be able to accept the input power from the DC input socket, and convert it into the working voltage required by the adapter board and the main board of the device under test through the voltage conversion circuit.

[0009] As a further solution, the serial port unit comprises: a serial port signal conversion circuit, a first end of which is connected with the custom function pin in the USB Type C interface; a serial port socket, connected with a second end of the serial port signal conversion circuit; wherein the serial port signal conversion circuit is configured to perform level conversion and signal isolation between the serial port signal of the USB Type C interface and the standard serial port signal of the serial port socket, so as to establish a serial port debugging link between the main board of the device under test and the multifunction adapter board.

[0010] As a further solution, the infrared receiving unit comprises: an IR receiving head, disposed on the outer surface of the adapter board, for receiving optical signals from an external infrared remote controller and converting them into electrical signals; an infrared signal processing circuit, connected between the IR receiving head and the custom function pin in the USB Type C interface; wherein the infrared signal processing circuit is configured to condition and shape the electrical signals output by the IR receiving head, and transmit the processed infrared remote control instruction signals to the main board of the device under test through the custom function pin, for testing the infrared remote control response function of the main board of the device under test.

[0011] As a further solution, the reset unit comprises: a reset button, disposed on the outer surface of the adapter board, for receiving manual triggering operations of a user; a reset control circuit, connected between the reset button and the custom function pin in the USB Type C interface; wherein the reset control circuit is configured to generate a reset control signal in response to the triggering of the reset button, and transmit it to the main board of the device under test through the custom function pin, for restarting or restoring the factory settings of the main board of the device under test for function testing.

[0012] In a second aspect, the present application also provides a test method for the multi-functional adapter plate based on the Type C interface, which is used to test the main board of a device to be tested by using the multi-functional adapter plate according to any one of the above aspects. The test method comprises the following steps: establishing a physical and communication connection between the adapter plate and the main board of the device to be tested through the USB Type C interface of the adapter plate; supplying power to the main board of the device to be tested through the power supply unit of the adapter plate via the USB Type C interface; establishing a USB data communication between the adapter plate and the main board of the device to be tested through the USB 2.0 interface to burn firmware or programs into the main board of the device to be tested; performing one or more of the following test operations: serial port debugging test: based on the serial port unit of the adapter plate, a serial port communication link is established between the adapter plate and the main board of the device to be tested through the custom function pin of the USB Type C interface to monitor the running state or perform instruction debugging; infrared function test: based on the infrared receiving unit of the adapter plate, external infrared remote control signals are received, and corresponding infrared instructions are forwarded to the main board of the device to be tested through the custom function pin of the USB Type C interface to verify the infrared remote control function of the main board of the device to be tested. reset function test: based on the reset unit of the adapter plate, a reset signal is sent to the main board of the device to be tested through the custom function pin of the USB Type C interface to trigger and verify the system reset operation of the main board of the device to be tested.

[0013] Compared with the related art, the multi-functional adapter plate based on the USB Type C interface and the test method thereof provided by the present application have the following advantages: The present application integrates multiple functions such as program burning, serial port debugging, infrared testing and reset testing into a single adapter plate through a unified USB Type C interface, realizes a plug-and-play non-invasive connection mode, and replaces the cumbersome process in the traditional scheme that requires disassembly or soldering of cables to access the debugging interface. The integrated design not only effectively avoids physical damage to the device caused by disassembly, but also enables the tester to efficiently complete the joint testing of the device without frequent switching between different tools, thereby greatly improving the debugging and testing efficiency. At the same time, the present application significantly simplifies the test process, saves production line space and equipment investment, reduces manpower dependence and maintenance cost, has outstanding practicability and good scalability, and is widely applicable to various scenes such as mass production and after-sales maintenance. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 A structure diagram of a multi-functional adapter plate based on the USB Type C interface is provided. Figure 2 The pin configuration diagram of the USB Type C interface of the multifunctional adapter plate is provided. DETAILED DESCRIPTION

[0015] The technical solutions in the present application are further described below in conjunction with the drawings and examples.

[0016] Before undertaking the detailed description below, it can be advantageous to set forth definitions of certain words and phrases that have been used throughout the patent document. The term “coupled” “connected” and their derivatives refer to any direct or indirect communication or interaction between or among the elements, regardless of whether those elements are physically touching one another. The terms “transmit,” “receive,” and “communicate,” as well as derivatives thereof, encompass both direct and indirect communication. The terms “include,” “comprise,” and “comprising,” and derivatives thereof, mean inclusion without limitation. The term “or” is inclusive, meaning and / or. The phrase “associated with,” as well as derivatives thereof, means includes, is included within, interconnects with, contains, is contained within, connects or is connected with, couples or is coupled with, communicates or is in communication with, cooperates or is cooperative with, interleafs with, is proximate to, is bound with or is bound to, has, has a property of, has a relationship with, or has or has a relationship with something. The term “controller” means any device, system or part thereof that controls at least one operation. Such a controller can be implemented in hardware or a combination of hardware and software and / or firmware. The functionality associated with any particular controller can be centralized or distributed, whether locally or remotely. The phrase “at least one of,” when used with respect to a list of items, means that a combination of one or more of the listed items can be used and that the list is intended to include at least one of each separately recited member. For example, “at least one of A, B, and C” includes A, B, C, A and B, A and C, B and C, A and B and C.

[0017] Definitions for other certain words and phrases are provided throughout this patent document. Those of ordinary skill in the art should understand that in many if not most instances, such definitions apply to prior as well as future uses of such defined words and phrases.

[0018] In this patent document, the application combination of modules and the division level of sub-modules are only for illustration, and the application combination of modules and the division level of sub-modules can have different ways without departing from the scope of the present disclosure.

[0019] As described in the background, there is a lack of a solution in the prior art that can realize plug-and-play testing without disassembling or welding a debugging cable, and can efficiently perform joint testing of multiple functions.

[0020] As Figure 1As shown, the embodiment of the present application provides a multifunctional adapter plate based on a USB Type C interface, which is used to connect to a device mainboard 200 to be tested to perform a function test on the device mainboard 200 to be tested. The adapter plate 100 comprises: a USB Type C interface 101, which is used to establish a communication connection with the device mainboard 200 to be tested; a USB 2.0 interface 105, which is used to establish a data transmission channel with the device mainboard 200 to be tested to perform a firmware burning or application debugging operation; a power supply unit 107, which is used to allocate and manage working power for the adapter plate 100 and the device mainboard 200 to be tested; a function unit 300, which comprises a serial port unit 102, an infrared receiving unit 103, and a reset unit 104 connected with the USB Type C interface 101 of the adapter plate 100. The function unit 300 is used to cooperate with the device mainboard 200 to be tested through the USB Type C interface 101 to perform one or more test functions, including: the serial port unit 102, which is used to establish a debugging serial port link with the device mainboard 200 to be tested to support monitoring and debugging of the running state thereof; the infrared receiving unit 103, which is used to receive an infrared remote control signal and transmit the infrared remote control signal to the device mainboard 200 to be tested to test the infrared remote control operation thereof; the reset unit 104, which is used to trigger a reset control signal to the device mainboard 200 to be tested to test the restart or factory setting recovery function thereof.

[0021] The embodiment provides a multifunctional adapter plate based on a USB Type C interface, which is used to connect to a device mainboard 200 to be tested to perform an efficient and integrated function test on the device mainboard 200 to be tested without disassembly or welding. The USB Type C interface 101 is used as a unified connection hub. On one hand, the serial port unit 102, the infrared receiving unit 103, and the reset unit 104 in the function unit 300 cooperate with the device mainboard 200 to be tested to respectively realize running state monitoring and debugging, infrared remote control function test, and restart / factory setting recovery test. On the other hand, the USB 2.0 interface 105 is used to establish a data transmission channel to support firmware burning and application debugging. Meanwhile, the power supply unit 107 is used to uniformly allocate and manage working power for the adapter plate 100 and the device mainboard 200 to be tested to ensure stable power supply during the test process.

[0022] The multifunctional adapter plate provided in the application can be quickly connected without disassembly through plug and play; integrated multiple functions can complete firmware programming, running monitoring, infrared response, reset function and other multi-dimensional tests at one time, greatly shorten the test period of a single device, adapt to the efficient needs of mass production scene, and reduce production loss caused by frequent disassembly / welding; solve the problem of damage and low efficiency caused by disassembly test of compact electronic devices due to compact structure. In addition, the running state needs to be debugged, the firmware needs to be reprogrammed or the core function needs to be verified during device maintenance. The adapter plate can be connected without damaging the device structure, supports on-site rapid troubleshooting; the device running log can be obtained in real time through serial port monitoring, the firmware can be updated through USB2.0 interface, and the function recovery situation can be verified through infrared receiving / reset unit, which significantly reduces the maintenance difficulty and time cost, and is especially suitable for compact devices with limited space and inconvenient disassembly maintenance.

[0023] As shown in Figure 2 In another embodiment of the application, the USB Type C interface includes a power pin group, a data pin group and a custom function pin group; The power pin group includes a VBUS pin, a GND pin and a CC pin; wherein the VBUS pin, the GND pin and the CC pin on the adapter plate 100 correspond to and are connected to the VBUS pin, the GND pin and the CC pin on the Type C interface of the mainboard 200 of the device under test, respectively, to establish power management and connection configuration; The data pin group includes a USB 2.0 data pin; wherein the USB 2.0 data pin on the adapter plate 100 is connected to the USB 2.0 data pin on the Type C interface of the mainboard 200 of the device under test, to transmit USB 2.0 data signals; The custom function pin group includes a TX pin, an RX pin and an SBU pin; wherein the TX pin and the RX pin on the adapter plate 100 correspond to and are connected to the TX pin and the RX pin on the Type C interface of the mainboard 200 of the device under test, respectively, and are connected to the serial port unit 102, for realizing serial communication; the SBU pin on the adapter plate 100 corresponds to and is connected to the SBU pin on the Type C interface of the mainboard 200 of the device under test, and is connected to the infrared receiving unit 103, for transmitting infrared signals; the SBU pin on the adapter plate 100 corresponds to and is connected to the SBU pin on the Type C interface of the mainboard 200 of the device under test, and is connected to the reset unit 104, for transmitting reset signals.

[0024] It should be noted that the core architecture of the multifunctional adapter plate of the embodiment includes an interface part, a power supply part and a functional module part. Specifically, the USB Type C interface 101 includes a USB Type C male seat 108 and a USB Type C female seat 106, and the adapter plate 100 can flexibly select the adaptive docking end according to the actual interface form of the device mainboard 200 to be tested. For example, in the embodiment, the interface of the device mainboard 200 to be tested is a Type C female seat 201, and the corresponding adapter docking end is a Type C male seat 108. The USB 2.0 interface 105 is connected with the USB 2.0 data pin of the USB Type C interface 101, and is used to establish a data transmission channel with the device mainboard 200 to be tested, so as to perform firmware burning or application debugging operation.

[0025] The power supply unit 107 includes a voltage conversion circuit, the input end of the power supply unit 107 is connected with a direct current input socket, and the output end is connected with the power supply pin of the USB Type C interface 101, which is used to accept input power from various sources and convert it into stable working voltage required by the adapter plate 100 and the device mainboard 200 to be tested.

[0026] The functional unit 300 uses the custom function pin group of the USB Type C interface 101 to transmit corresponding control signals, so as to realize cooperative test operation with the device mainboard 200 to be tested. The serial port unit 102 includes a serial port signal conversion circuit and a serial port socket, the serial port signal conversion circuit is connected between the custom function pin in the USB Type C interface 101 and the serial port socket, which is used to establish a debugging serial port link to support monitoring and instruction debugging of the running state of the device mainboard 200 to be tested; the infrared signal receiving unit 103 includes an IR receiving head (infrared receiving head) and an infrared signal processing circuit, the infrared receiving head is used to receive optical signals of an external infrared remote controller, and after the infrared signal processing circuit is adjusted, the signals are transmitted to the device mainboard 200 to be tested through the custom pin of the USB Type C interface 101, so as to test the correctness and responsiveness of the infrared remote control function; the reset unit 104 includes a reset button and a reset control circuit, the reset control circuit is connected between the reset button and the custom pin of the USB Type C interface 101, which is used to generate a reset control signal in response to the triggering of the reset button, and to perform forced reset test on the device mainboard 200 to be tested.

[0027] Through the above integrated architecture, a plurality of operations including power supply, program burning, serial port debugging, infrared testing and reset testing can be completed through only one USB Type C connection, greatly improving the test efficiency and convenience. In summary, the present application provides a low-cost and efficient solution for the production testing and later maintenance of compact electronic devices through non-destructive access, multi-functional integration and efficient collaborative testing.

[0028] The present application also provides a test method for the multi-functional adapter plate based on Type C interface. The test method comprises: establishing physical and communication connection between the USB Type C interface 101 of the adapter plate and the main board 200 of the device under test; supplying power to the main board 200 of the device under test through the power supply unit 107 of the adapter plate via the USB Type C interface 101; establishing USB data communication between the USB 2.0 interface 105 and the main board 200 of the device under test to burn firmware or program to the main board 200 of the device under test; performing one or more of the following test operations: serial port debugging test: based on the serial port unit 102 of the adapter plate 100, establishing serial port communication link between the custom function pin of the USB Type C interface 101 and the main board 200 of the device under test to monitor its running state or perform instruction debugging; infrared function test: based on the infrared receiving unit 103 of the adapter plate 100, receiving external infrared remote control signal and forwarding corresponding infrared instruction to the main board 200 of the device under test through the custom function pin of the USB Type C interface 101 to verify its infrared remote control function; reset function test: based on the reset unit 104 of the adapter plate 100, sending reset signal to the main board 200 of the device under test through the custom function pin of the USB Type C interface 101 to trigger and verify its system reset operation.

[0029] It should be noted that the method unifies the discrete and tedious disassembly-welding-connection multi-device complex process in the traditional test into a plug-and-play operation. The tester only needs to complete physical connection once, and can sequentially or selectively perform burning, debugging, infrared and reset tests by selecting different functional units, thereby reducing test preparation time to the minimum, standardizing the operation process, and reducing the dependence on personnel skills. The USB Type C interface is used to concurrently process power supply, standard USB communication and multiple custom test signals, so that seamless and rapid switching between different tasks such as firmware burning, system running monitoring, peripheral function verification and system reliability testing can be realized in the test process without changing the physical connection cable or test tool, thereby greatly improving the overall efficiency of joint testing, especially for rapid beat testing on the production line. The entire test process does not need to disassemble the device shell, and does not need to perform welding operation on the precision mainboard, thereby eliminating the risk of physical damage to the device structure, mainboard and components caused by the above operations from the root, ensuring product yield, providing a batch-reproducible and fast-executable test solution for the production line, and greatly compressing the test time of a single product, thereby providing key support for shortening the production cycle and accelerating product delivery.

[0030] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application and not to limit it. Although the present application has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present application can be modified or replaced by equivalents without departing from the spirit and scope of the present application, and they should be covered in the scope of the claims of the present application.

Claims

1. A multi-functional adapter plate based on a USB Type C interface, used for connecting to a device-under-test (DUT) mainboard to perform a functional test on the DUT mainboard, characterized in that, The adapter board comprises: a USB Type C interface for establishing a communication connection with the mainboard of the device under test; a USB 2.0 interface for establishing a data transmission channel with the mainboard of the device under test to perform firmware burning or application debugging operations; a power supply unit for allocating and managing working power for the adapter board and the mainboard of the device under test; a function unit comprising a serial port unit, an infrared receiving unit, and a reset unit connected to the USB Type C interface of the adapter board, the function unit being configured to cooperate with the mainboard of the device under test through the USB Type C interface to perform one or more test functions, including: the serial port unit for establishing a debugging serial port link with the mainboard of the device under test to support monitoring and debugging of its running state; the infrared receiving unit for receiving infrared remote control signals and transmitting them to the mainboard of the device under test to test its infrared remote control operation; the reset unit for triggering a reset control signal to the mainboard of the device under test to test its restart or factory settings recovery function. 2.The multi-functional adapter plate based on the USB Type C interface of claim 1, wherein, The USB Type C interface comprises a power pin group, a data pin group, and a custom function pin group; the power pin group comprises a VBUS pin, a GND pin, and a CC pin; wherein the VBUS pin, the GND pin, and the CC pin on the adapter board correspond to and are connected to the VBUS pin, the GND pin, and the CC pin on the Type C interface of the mainboard of the device under test to establish power management and connection configuration; the data pin group comprises a USB 2.0 data pin; wherein the USB 2.0 data pin on the adapter board corresponds to and is connected to the USB 2.0 data pin on the Type C interface of the mainboard of the device under test to transmit USB 2.0 data signals; the custom function pin group comprises a TX pin, an RX pin, and an SBU pin; wherein the TX pin and the RX pin on the adapter board correspond to and are connected to the TX pin and the RX pin on the Type C interface of the mainboard of the device under test, and are connected to the serial port unit to realize serial communication; the SBU pin on the adapter board corresponds to and is connected to the SBU pin on the Type C interface of the mainboard of the device under test, and is connected to the infrared receiving unit to transmit infrared signals; the SBU pin on the adapter board corresponds to and is connected to the SBU pin on the Type C interface of the mainboard of the device under test, and is connected to the reset unit to transmit a reset signal. 3.The multi-functional adapter plate based on USB Type C interface of claim 2, wherein, The power supply unit comprises a voltage conversion circuit, the input end of which is connected to a DC input socket, and the output end of which is connected to the power pins of the USB Type C interface; wherein the power supply unit is configured to accept input power from the DC input socket and convert it into the working voltage required by the adapter board and the mainboard of the device under test through the voltage conversion circuit.

4. The multi-functional adapter plate based on the USB Type-C interface according to claim 2, characterized in that, The serial port unit comprises: a serial port signal conversion circuit, the first end of which is connected to the custom function pin in the USB Type C interface; A serial port socket connected to a second end of the serial port signal conversion circuit; The serial port signal conversion circuit is configured to perform level conversion and signal isolation between the serial port signal of the USB Type C interface and the standard serial port signal of the serial port socket, so as to establish a serial port debugging link between the to-be-tested device mainboard and the multifunctional adapter board.

5. The multi-functional adapter plate based on the USB Type-C interface according to claim 2, characterized in that, The infrared receiving unit includes: An IR receiving head disposed on the outer surface of the adapter board, for receiving optical signals from an external infrared remote controller and converting them into electrical signals; An infrared signal processing circuit connected between the IR receiving head and a custom function pin in the USB Type C interface; The infrared signal processing circuit is configured to condition and shape the electrical signals output by the IR receiving head, and transmit the processed infrared remote control instruction signals to the to-be-tested device mainboard through the custom function pin, for testing the infrared remote control response function of the to-be-tested device mainboard.

6. The multi-functional adapter plate based on the USB Type-C interface according to claim 2, characterized in that, The reset unit includes: A reset button disposed on the outer surface of the adapter board, for receiving manual triggering operations of a user; A reset control circuit connected between the reset button and a custom function pin in the USB Type C interface; The reset control circuit is configured to generate a reset control signal in response to triggering of the reset button, and transmit it to the to-be-tested device mainboard through the custom function pin, for restarting or restoring factory settings of the to-be-tested device mainboard for function testing.

7. A test method of a multi-functional adapter plate based on a Type C interface, which applies the multi-functional adapter plate according to any one of claims 1 to 6 to a main board of a device under test to perform a function test, characterized in that, The test method includes: Establishing physical and communication connection between the adapter board and the to-be-tested device mainboard through the USB Type C interface of the adapter board; Powering the to-be-tested device mainboard through the power supply unit of the adapter board via the USB Type C interface; Establishing USB data communication between the adapter board and the to-be-tested device mainboard through the USB 2.0 interface, to burn firmware or programs into the to-be-tested device mainboard; Performing one or more of the following test operations: Serial port debugging test: based on the serial port unit of the adapter board, establishing a serial port communication link between the custom function pin of the USB Type C interface and the to-be-tested device mainboard, to monitor its running state or perform instruction debugging; Infrared function test: based on the infrared receiving unit of the adapter board, receiving external infrared remote control signals, and forwarding corresponding infrared instructions to the to-be-tested device mainboard through the custom function pin of the USB Type C interface, to verify its infrared remote control function; Reset function test: based on the reset unit of the adapter board, sending a reset signal to the to-be-tested device mainboard through the custom function pin of the USB Type C interface, to trigger and verify its system reset operation.

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