Firmware burning device

Abstract

The utility model aims to provide the firmware burning device which is convenient to operate and can reduce the maintenance cost. The test board comprises a signal processing board, the signal processing board is connected with a product to be tested through a plurality of groups of signal adapter boards, and the signal processing board comprises test units which are connected with the plurality of groups of signal adapter boards in a one-to-one correspondence manner. All the test units and all the signal adapter plates are in communication connection with a computer through a concentrator, and each test unit comprises an equipment interface controller and an I2C multiplexer which are matched with each other. The utility model is applied to the technical field of mainboard product production.

Description

Technical Field

[0001] The utility model is applied to the technical field of mainboard product production, and particularly relates to a firmware burning device. Background Art

[0002] The production process for consumer electronic device motherboards, from PCB fabrication and component soldering to finished product assembly, requires frequent upgrades. To improve product yield, functional testing of the motherboard and the entire device is essential. However, most motherboards cannot be functionally tested directly after soldering components. They must first undergo processes such as motherboard firmware flashing and board serial number writing before undergoing full functional testing.

[0003] Existing motherboard firmware burning and testing equipment systems typically connect the MCU unit to a computer via a network cable. Since the MCU unit is simultaneously responsible for communicating with the motherboard, host computer, and test system, process conflicts and other issues can sometimes lead to abnormal network connection interruptions. This necessitates continuous maintenance of the main control module's firmware to improve functionality. Furthermore, firmware upgrades or changes to the product under test also require re-burning the MCU unit's firmware. This maintenance and alignment of the MCU unit's firmware require repeated firmware burning, increasing the risk of damage to the MCU unit in existing motherboard firmware burning and testing equipment systems due to burning failures. Furthermore, the MCU unit itself has a relatively complex circuit composition and logical relationships, and includes redundant components during design, making it difficult to troubleshoot fault points during maintenance.

[0004] If a firmware burning device that is easy to operate and can reduce maintenance costs can be provided, the above technical problems can be well solved. Utility Model Content

[0005] The technical problem to be solved by the utility model is to overcome the deficiencies of the prior art and provide a firmware burning device which is easy to operate and can reduce maintenance costs.

[0006] The technical solution adopted by the present invention is: the present invention includes a signal processing board, which is connected to the product to be tested through several groups of signal adapter boards. The signal processing board includes test units connected one-to-one with the several groups of signal adapter boards. All the test units and all the signal adapter boards are connected to the computer through a hub for communication. The test units include a corresponding device interface controller and an I2C multiplexer.

[0007] It can be seen from the above scheme that the product to be tested is connected to the signal adapter board to realize circuit conduction. At the same time, the signal adapter board supplies power to the product to be tested, and cooperates with the I2C multiplexer and the device interface controller to realize the extraction of the operating signal of the product to be tested. In addition, the signal adapter board also connects the product to be tested with the host computer through the hub and communicates, communicates and transmits signals to the host computer through the hub, so that the host computer obtains the signal of the product to be tested and burns the firmware through the communication channel, thereby avoiding the failure of burning caused by the firmware adjustment of the MCU unit itself in the traditional firmware burning test equipment, and the burning device is difficult to maintain and repair. At the same time, the overall cost of the utility model is low, the assembly is convenient, and it is easy to mass produce.

[0008] A preferred solution is that the device interface controller is connected to the corresponding signal adapter board via an SPI bus, the I2C multiplexer is connected to the corresponding signal adapter board via an I2C bus, the I2C multiplexer is connected to the device interface controller, and the device interface controller and the signal adapter board are both connected to the hub via a USB cable.

[0009] A preferred solution is that the I2C multiplexer is also connected to a cylinder controller via an I2C bus, the cylinder controller is connected to a crimping cylinder, the crimping cylinder cooperates with the motherboard to be tested and drives the motherboard to be tested to contact and conduct with the probe on the signal adapter board.

[0010] A preferred solution is that the computer is connected to a barcode scanner via a hub, and the barcode scanner cooperates with the barcode on the product to be tested.

[0011] A preferred solution is that the signal adapter board is communicatively connected to the test unit of the signal processing board via a board-to-board connector. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a system block diagram of the utility model;

[0013] Figure 2 is a circuit schematic diagram of the signal adapter board;

[0014] Figure 3 is a circuit schematic diagram of the device interface controller;

[0015] Figure 4 It is the circuit schematic diagram of the I2C multiplexer. DETAILED DESCRIPTION

[0016] like Figure 1As shown, in this embodiment, the utility model includes a signal processing board 1, which is connected to the product to be tested 3 through several groups of signal adapter boards 2. The signal processing board 1 includes test units 4 connected one-to-one with several groups of signal adapter boards 2. All of the test units 4 and all of the signal adapter boards 2 are connected to the computer 6 through a hub 5. The test unit 4 includes a matching device interface controller U3100 and an I2C multiplexer U3101. The device interface controller U3100 is an interface chip with a model number of FT4222, and the I2C multiplexer U3101 is a multiplexer with a model number of TCA9548. The signal adapter board 2 is responsible for carrying the probes and performing signal transfer through the probes. The USB signal, SPI signal, and I2C signal of the product under test 3 are respectively brought out through the signal adapter board 2, the device interface controller U3100, and the I2C multiplexer U3101, wherein the USB signal is directly connected to the computer through the hub 5, and the SPI signal and I2C signal are converted into USB signals through the device interface controller U3100 and the I2C multiplexer U3101 and connected to the computer via the same hub 5.

[0017] In this embodiment, the signal processing board 1 also includes a power supply module, which includes an adapter. The adapter is connected to the external power grid, and the adapter is connected to all the test units 4 and all the signal adapter boards for power supply through a connector. The signal adapter board 2 is provided with a power supply connection pin that cooperates with the contacts on the product to be tested 3.

[0018] In this embodiment, the device interface controller U3100 is connected to the corresponding signal adapter board 2 via the SPI bus, the I2C multiplexer U3101 is connected to the corresponding signal adapter board 2 via the I2C bus, the I2C multiplexer U3101 is connected to the device interface controller U3100, and the device interface controller U3100 and the signal adapter board 2 are both connected to the hub 5 via a USB cable. The device interface controller U3100 has a configurable industry-standard SPI master-slave interface controller and a configurable I2C master-slave interface controller that complies with the I2C v2.1 and v3.0 standards. It also has on-chip OTP memory for USB vendor ID (VID), product ID (PID), device serial number, product description, and other various vendor-specific data. The test unit 4 has two channels, and during testing, the VID is used to identify the channels to control the test by channel. The SPI controller is connected to the components of the product under test 3 that can use SPI to burn firmware for firmware upgrades and updates. The I2C controller is connected to the I2C multiplexer U3101. USB 2.0 signals are connected to the host computer for communication, without the need for firmware support. The I2C multiplexer U3101 is an 8-channel bidirectional switch that can select any channel via an I2C bus. The test unit 4 converts one I2C bus of the device interface controller U3100 into eight I2C bus groups for subsequent circuit control.

[0019] In this embodiment, the I2C multiplexer U3101 is also connected to a cylinder controller 7 via an I2C bus. The cylinder controller 7 is connected to a crimping cylinder. The crimping cylinder cooperates with the product to be tested 3 and drives the product to be tested 3 to contact and conduct with the probe on the signal adapter board 2.

[0020] In this embodiment, the computer 6 is connected to a barcode scanner 8 through the hub 5, and the barcode scanner 8 cooperates with the barcode on the product to be tested 3. The barcode scanner 8 is directly connected to the computer through the hub 5, and the computer directly obtains the SN information of the product to be tested 3.

[0021] In this embodiment, the signal adapter board 2 is communicatively connected to the test unit 4 of the signal processing board 1 via a board-to-board connector.

[0022] During the firmware burning test, the product to be tested 3 is placed on the probe side of the signal adapter board 2, and the computer 6 controls the cylinder controller 7 through the device interface controller U3100 connected to the hub 5 to perform cylinder control, so that the product to be tested 3 contacts the probe. The SN information of the QR code on the product to be tested 3 is obtained and recorded through the barcode scanner 8. After that, the computer 6 controls the power supply to the product to be tested 3 to start working, and burns the firmware to the product to be tested 3 through the USB / SPI / I2C and other signals led out from the mainboard. After the burning is completed, the recorded SN is written to the mainboard through the USB signal. After all the tests are completed, the computer 6 controls the power off of the product to be tested 3, and then controls the cylinder controller 7 to release the crimped product. After that, the product can be removed and a new product can be put in for the next round of testing.

[0023] Although the embodiments of the present invention are described with practical solutions, they do not limit the meaning of the present invention. For those skilled in the art, it is obvious to modify the implementation scheme and combine it with other solutions based on this description.

Claims

1. A firmware burning device, characterized by: It comprises a signal processing board (1), the signal processing board (1) being connected to a product to be tested (3) via a plurality of groups of signal adapter boards (2), the signal processing board (1) comprising test units (4) connected one-to-one with the plurality of groups of signal adapter boards (2), all the test units (4) and all the signal adapter boards (2) being communicatively connected to a computer (6) via a hub (5), and the test units (4) comprising a matching device interface controller (U3100) and an I2C multiplexer (U3101).

2. The firmware burning device according to claim 1, wherein: The device interface controller (U3100) is connected to the corresponding signal transfer board (2) via an SPI bus, the I2C multiplexer (U3101) is connected to the corresponding signal transfer board (2) via an I2C bus, the I2C multiplexer (U3101) is connected to the device interface controller (U3100), and the device interface controller (U3100) and the signal transfer board (2) are both connected to the hub (5) via a USB cable.

3. The firmware burning device according to claim 2, wherein: The I2C multiplexer (U3101) is also connected to a cylinder controller (7) via an I2C bus. The cylinder controller (7) is connected to a crimping cylinder. The crimping cylinder cooperates with the product to be tested (3) and drives the product to be tested (3) to contact and conduct with a probe on the signal adapter board (2).

4. The firmware burning device according to claim 1, wherein: The computer (6) is connected to a barcode scanner (8) via the hub (5), and the barcode scanner (8) cooperates with the barcode on the product to be tested (3).

5. The firmware burning device according to claim 1, wherein: The signal adapter board (2) is communicatively connected to the test unit (4) of the signal processing board (1) via a board-to-board connector.

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