Debugging device and system with signal transmission and serial communication functions

Abstract

The utility model relates to the technical field of interface testing, and discloses a debugging device with signal transmission and serial port communication functions, which comprises a signal transmission unit and a debugging conversion unit, one end of the signal transmission unit is used for being connected with external equipment, and the other end of the signal transmission unit is used for being connected with an HDMI (High Definition Multimedia Interface) of a tested product; the signal transmission unit is used for receiving an HDMI signal input by external equipment and transmitting the HDMI signal to the HDMI interface; one end of the debugging conversion unit is connected with the signal transmission unit, the other end of the debugging conversion unit is connected with debugging equipment, and the debugging conversion unit is used for converting a signal input by the debugging equipment into a serial communication signal; when the signal transmission unit transmits the HDMI signal to the HDMI interface, the signal transmission unit transmits the serial communication signal to the HDMI interface for serial communication so as to realize debugging. According to the utility model, the production test efficiency of the HDMI interface can be greatly improved.

Description

Technical Field

[0001] The utility model relates to the technical field of interface testing, in particular to a debugging device and a system with signal transmission and serial port communication functions. Background Art

[0002] In various electronic products that can display video images, such as televisions, projectors, and computers, HDMI interfaces are usually provided, and the HDMI interface plays an irreplaceable role in these electronic products. At present, the HDMI interface not only plays the role of signal transmission, but is also compatible with the function of serial communication. Although this compatibility design can facilitate debugging by developers and functional debugging during production, it has shortcomings during production: when the HDMI interface is being debugged via serial communication, the HDMI interface cannot transmit signals at this time, which makes it impossible to simultaneously verify the signal transmission function of the HDMI interface during production testing, and requires additional methods for testing, which greatly reduces the efficiency of production testing.

[0003] Therefore, in order to solve the above problems, the utility model provides a debugging device and system with signal transmission and serial communication functions, which can improve the efficiency of HDMI interface production testing. Utility Model Content

[0004] The utility model provides a debugging device and a system with signal transmission and serial communication functions, aiming to solve the problem of low production test efficiency of the existing HDMI interface.

[0005] In order to solve the above technical problems, the utility model provides a debugging device with signal transmission and serial communication functions, which includes: a signal transmission unit, one end of which is used to connect with an external device, and the other end of which is used to connect with an HDMI interface of a product under test, the signal transmission unit is used to receive an HDMI signal input by the external device, and transmit the HDMI signal to the HDMI interface; a debugging conversion unit, one end of which is connected to the signal transmission unit, and the other end of which is used to connect with a debugging device, the debugging conversion unit is used to convert the signal input by the debugging device into a serial communication signal; wherein, while the signal transmission unit transmits the HDMI signal to the HDMI interface, the serial communication signal is transmitted to the HDMI interface through the signal transmission unit to perform serial communication to achieve debugging.

[0006] Furthermore, the debugging conversion unit includes a debugging input module, a conversion module and a crystal oscillator module, one end of the debugging input module is used to connect to the debugging device, and the other end is connected to the conversion module, one end of the conversion module is connected to the crystal oscillator module, and the other end is connected to the signal transmission unit.

[0007] Furthermore, the conversion module includes a CH340G chip, the UD+ pin and UD- pin of the CH340G chip are both connected to the debugging input module, the XTAL_O pin and XTAL_I pin of the CH340G chip are both connected to the crystal oscillator module, and the TX pin and RX pin of the CH340G chip are both connected to the signal transmission unit.

[0008] Furthermore, the debugging input module includes a USB adapter interface, an inductor and a first capacitor, one end of the USB adapter interface is used to connect to the debugging device, and the other end is connected to the UD+ pin and UD- pin of the CH340G chip; one end of the inductor is connected to the power supply end of the USB adapter interface, and the other end is connected to one end of the first capacitor and the input voltage, and the other end of the first capacitor is grounded.

[0009] Furthermore, the crystal oscillator module includes a crystal oscillator, a second capacitor and a third capacitor. The first connection end of the crystal oscillator is connected to the XTAL_I pin of the CH340G chip and one end of the third capacitor, the other end of the third capacitor is grounded, the second connection end of the crystal oscillator is connected to the XTAL_O pin of the CH340G chip and one end of the second capacitor, the other end of the second capacitor is grounded, and the third connection end of the crystal oscillator is grounded.

[0010] Furthermore, the signal transmission unit includes a signal input module and a signal output module, one end of the signal input module is used to connect to the external device, and the other end is connected to the signal output module; one end of the signal output module is used to connect to the HDMI interface, and the other end is connected to the signal input module and the debugging conversion unit.

[0011] Furthermore, the debugging device with signal transmission and serial communication functions also includes a voltage conversion unit and an indication unit, one end of the voltage conversion unit is used to receive an input voltage, and the other end is connected to one end of the conversion unit and the indication unit, the other end of the indication unit is connected to the debugging conversion unit, the voltage conversion unit is used to convert the input voltage into a power supply voltage to supply power to the debugging conversion unit and the indication unit, and the indication unit is used to indicate the working status of the debugging device with signal transmission and serial communication functions.

[0012] Further, the voltage conversion unit includes a voltage conversion chip, a fourth capacitor, a fifth capacitor, a sixth capacitor and a seventh capacitor, the power input end of the voltage conversion chip is connected to the input voltage, the fourth capacitor and one end of the fifth capacitor, the other ends of the fourth capacitor and the fifth capacitor are grounded, and the power input end is used to receive the input voltage; the power output end of the voltage conversion chip is connected to the debugging conversion unit, the indication unit, one end of the sixth capacitor and the seventh capacitor, the other ends of the sixth capacitor and the seventh capacitor are grounded, and the power output end is used to output the supply voltage.

[0013] Further, the indication unit includes a first LED lamp, a second LED lamp, a first resistor and a second resistor, one end of the first resistor is connected to the power output end, the other end is connected to the positive pole of the first LED lamp, and the negative pole of the first LED lamp is connected to the debugging conversion unit; one end of the second resistor is connected to the power output end, the other end is connected to the positive pole of the second LED lamp, and the negative pole of the second LED lamp is connected to the debugging conversion unit.

[0014] On the other hand, the utility model also provides a debugging system with signal transmission and serial communication functions, the debugging system with signal transmission and serial communication functions comprises an external device, a product under test, a debugging device and the above-mentioned debugging apparatus with signal transmission and serial communication functions, wherein the signal input module of the debugging apparatus with signal transmission and serial communication functions is connected to the external device, the signal output module of the debugging apparatus with signal transmission and serial communication functions is connected to the HDMI interface of the product under test, and the debugging input module of the debugging apparatus with signal transmission and serial communication functions is connected to the debugging device.

[0015] The debugging device with signal transmission and serial communication functions disclosed in the utility model includes a signal transmission unit and a debugging conversion unit, wherein the signal transmission unit is used to connect an external device and an HDMI interface of a product under test, and transmits an HDMI signal input by the external device to the HDMI interface to realize the transmission of the HDMI signal, and at the same time, the debugging conversion unit receives a serial communication signal of the debugging device, and transmits the serial communication signal to the HDMI interface through the signal transmission unit to realize the serial debugging of the HDMI interface, and the cooperation of the signal transmission unit and the debugging conversion unit enables the HDMI interface to perform serial communication debugging test synchronously while performing signal transmission test, thereby greatly improving the production test efficiency of the HDMI interface. The debugging device and system with signal transmission and serial communication functions disclosed in the utility model solve the problem of low production test efficiency of the existing HDMI interface. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0017] Figure 1 It is a structural block diagram of a debugging device with signal transmission and serial communication functions provided by an embodiment of the utility model;

[0018] Figure 2 It is a circuit schematic diagram of a signal transmission unit provided in one embodiment of the utility model;

[0019] Figure 3 It is a circuit principle diagram of a debugging conversion unit provided in one embodiment of the utility model;

[0020] Figure 4 This is a circuit schematic diagram of a voltage conversion unit provided in one embodiment of the utility model;

[0021] Figure 5 It is a circuit principle diagram of an indicating unit provided in one embodiment of the utility model;

[0022] Figure 6 It is a structural block diagram of a debugging system with signal transmission and serial communication functions provided by an embodiment of the utility model.

[0023] Reference numerals:

[0024] 10. Debugging device with signal transmission and serial communication functions; 11. Signal transmission unit; 111. Signal input module; 112. Signal output module; 12. Debug conversion unit; 121. Debug input module; 122. Conversion module; 123. Crystal oscillator module; 13. Voltage conversion unit; 14. Indication unit; 20. External device; 30. Product under test; 40. Debugging device; 100. Debugging system with signal transmission and serial communication functions. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0026] It should be understood that when used in this specification and the appended claims, the terms "include" and "comprises" indicate the presence of described features, integers, steps, operations, elements and / or components, but do not exclude the presence or addition of one or more other features, integers, steps, operations, elements, components and / or combinations thereof.

[0027] It should also be understood that the terms used in this utility model specification are only for the purpose of describing specific embodiments and are not intended to limit the utility model. As used in this utility model specification and the appended claims, unless the context clearly indicates otherwise, the singular forms "a", "an" and "the" are intended to include plural forms.

[0028] It should be further understood that the term “and / or” used in the present specification and the appended claims refers to any combination and all possible combinations of one or more of the associated listed items, and includes these combinations.

[0029] Figures 1 to 6 An embodiment of the debugging device with signal transmission and serial communication functions provided by the utility model is shown. Figure 1 , Figure 1 A structural block diagram of a debugging device with signal transmission and serial communication functions provided by an embodiment of the utility model. The debugging device 10 with signal transmission and serial communication functions of this embodiment includes a signal transmission unit 11, one end of which is used to connect to an external device 20, and the other end is used to connect to the HDMI interface of the product under test 30, the signal transmission unit 11 is used to receive the HDMI signal input by the external device 20, and transmit the HDMI signal to the HDMI interface; a debugging conversion unit 12, one end of which is connected to the signal transmission unit 11, and the other end is used to connect to the debugging device 40, the debugging conversion unit 12 is used to convert the signal input by the debugging device 40 into a serial communication signal; wherein, while the signal transmission unit 11 transmits the HDMI signal to the HDMI interface, the serial communication signal is transmitted to the HDMI interface through the signal transmission unit 11 to perform serial communication to achieve debugging. The debugging device 10 with signal transmission and serial communication functions of the utility model can make the HDMI interface perform serial communication debugging test synchronously while performing signal transmission test through the cooperation of the signal transmission unit 11 and the debugging conversion unit 12, which greatly improves the production test efficiency of the HDMI interface. It should be noted that, in this embodiment, the external device 20 is a device that can provide HDMI signals. The tested product 30 can be a device with an HDMI interface, such as a TV, a projector, and a computer. The debugging device 40 is a terminal host computer with serial communication and debugging functions, such as a PC host computer.

[0030] In one embodiment, such as this embodiment, see Figure 2 , Figure 2 1 is a circuit schematic diagram of a signal transmission unit provided in an embodiment of the present utility model. The signal transmission unit 11 includes a signal input module 111 and a signal output module 112. One end of the signal input module 111 is used to connect to the external device 20, and the other end is connected to the signal output module 112; one end of the signal output module 112 is used to connect to the HDMI interface, and the other end is connected to the signal input module 111 and the debugging conversion unit 12. Specifically, the signal input module 111 is an HDMI signal input interface (i.e. Figure 2 The signal output module 112 is an HDMI signal output interface (i.e., an HDMI-IN in the HDMI signal source input), which is connected to the device (i.e., the external device 20) for receiving the HDMI signal input of the external device. Figure 2 The HDMI-OUT in the signal transmission unit 11 is connected to the HDMI interface of the product under test 30, for example, to the HDMI interface on the mainboard of the product under test 30, so as to output the HDMI signal to the HDMI interface. It can be understood that in the signal transmission unit 11, the signal input module 111 and the signal output module 112 are connected through the same pin.

[0031] In one embodiment, such as this embodiment, see Figure 3 , Figure 3 It is a circuit schematic diagram of a debugging conversion unit provided by an embodiment of the utility model. The debugging conversion unit 12 includes a debugging input module 121, a conversion module 122 and a crystal oscillator module 123. One end of the debugging input module 121 is used to connect to the debugging device 40, and the other end is connected to the conversion module 122. One end of the conversion module 122 is connected to the crystal oscillator module 123, and the other end is connected to the signal transmission unit 11. Specifically, the debugging input module 121 includes a USB adapter interface JU1, an inductor L11 and a first capacitor CD1. One end of the USB adapter interface JU1 is used to connect to the debugging device 40, and the other end is connected to the UD+ pin and UD- pin of the CH340G chip; one end of the inductor L11 is connected to the power supply terminal VCC of the USB adapter interface JU1, and the other end is connected to one end of the first capacitor CD1 and the input voltage, and the other end of the first capacitor CD1 is grounded. The D+ pin and D- pin of the USB adapter interface JU1 are respectively connected to the UD+ pin and UD- pin of the CH340G chip; the input voltage is +5V_Standby (ie, a standby voltage of 5V).

[0032] Furthermore, if Figure 3As shown, the conversion module 122 includes a CH340G chip, the UD+ pin and the UD- pin of the CH340G chip are both connected to the debugging input module 121, the XTAL_O pin and the XTAL_I pin of the CH340G chip are both connected to the crystal oscillator module 123, and the TX pin and the RX pin of the CH340G chip are both connected to the signal transmission unit 11. It should be noted that in this embodiment, the CH340G chip is a single-chip chip that can realize USB to serial port conversion. It has the advantages of low power consumption, high efficiency, low cost and high integration. It can replace traditional serial communication interfaces such as RS232 and RS485, and can realize communication between a PC and other devices. For example, in this embodiment, serial communication can be realized between a PC host computer and an HDMI interface of a product under test 30. At the same time, the CH340G chip can also convert TTL to USB to communicate with a PC host computer.

[0033] Furthermore, if Figure 3 As shown, the crystal oscillator module 123 includes a crystal oscillator Y201, a second capacitor C1 and a third capacitor C2, a first connection end of the crystal oscillator Y201 is connected to the XTAL_I pin of the CH340G chip and one end of the third capacitor C2, the other end of the third capacitor C2 is grounded, a second connection end of the crystal oscillator Y201 is connected to the XTAL_O pin of the CH340G chip and one end of the second capacitor C1, the other end of the second capacitor C1 is grounded, and the third connection end of the crystal oscillator Y201 is grounded. The required clock signal is provided to the CH340G chip through the crystal oscillator module 123.

[0034] In one embodiment, such as this embodiment, see Figure 4 and Figure 5 , Figure 4 This is a circuit schematic diagram of a voltage conversion unit provided in one embodiment of the utility model; Figure 5 It is a circuit schematic diagram of an indication unit provided in an embodiment of the utility model. The debugging device 10 with signal transmission and serial communication functions also includes a voltage conversion unit 13 and an indication unit 14, one end of the voltage conversion unit 13 is used to receive an input voltage, and the other end is connected to one end of the conversion unit and the indication unit 14, and the other end of the indication unit 14 is connected to the debugging conversion unit 12, and the voltage conversion unit 13 is used to convert the input voltage into a power supply voltage to supply power to the debugging conversion unit 12 and the indication unit 14, and the indication unit 14 is used to indicate the working state of the debugging device 10 with signal transmission and serial communication functions. It should be noted that in this embodiment, the input voltage is +5V_Standby, and the power supply voltage is _+3.3VStandby.

[0035] Specifically, Figure 4 As shown, the voltage conversion unit 13 includes a voltage conversion chip UD2, a fourth capacitor CD19, a fifth capacitor CD8, a sixth capacitor CD11 and a seventh capacitor CD6, the power input end of the voltage conversion chip UD2 is connected to the input voltage, the fourth capacitor CD19 and one end of the fifth capacitor CD8, the other ends of the fourth capacitor CD19 and the fifth capacitor CD8 are grounded, and the power input end is used to receive the input voltage; the power output end of the voltage conversion chip UD2 is connected to the debugging conversion unit 12, the indication unit 14, the sixth capacitor CD11 and one end of the seventh capacitor CD6, the other ends of the sixth capacitor CD11 and the seventh capacitor CD6 are grounded, and the power output end is used to output the supply voltage. Understandably, the power input end of the voltage conversion chip UD2 is the IN pin, and the power output end of the voltage conversion chip UD2 is the OUT pin. The voltage conversion chip UD2 can convert the +5V_Standby input voltage into a +3.3VStandby supply voltage, and the fourth capacitor CD19, the fifth capacitor CD8, the sixth capacitor CD11 and the seventh capacitor CD6 can filter the input voltage and the supply voltage to remove noise.

[0036] Furthermore, if Figure 5 As shown, the indicating unit 14 includes a first LED lamp, a second LED lamp, a first resistor RA26 and a second resistor RA27. One end of the first resistor RA26 is connected to the power output end, and the other end is connected to the positive electrode of the first LED lamp, and the negative electrode of the first LED lamp is connected to the debugging conversion unit 12; one end of the second resistor RA27 is connected to the power output end, and the other end is connected to the positive electrode of the second LED lamp, and the negative electrode of the second LED lamp is connected to the debugging conversion unit 12. It should be noted that in this embodiment, the first LED lamp and the second LED lamp are respectively Figure 5 The LED2 and LED3 in the CH340G chip have their cathode connected to the TX pin of the CH340G chip, and their cathode connected to the RX pin of the CH340G chip. The working status of the CH340G chip can be indicated by the LED2 and LED3. For example, when the LED2 and LED3 are on, it can indicate that the CH340G chip is in the state of serial communication.

[0037] Furthermore, if Figure 5As shown, the indicating unit 14 further includes a third LED lamp and a second resistor RA22, one end of the second resistor RA22 is used to receive the input voltage, and the other end is connected to the positive electrode of the third LED lamp, and the negative electrode of the third LED lamp is grounded. It should be noted that in this embodiment, the third LED lamp is Figure 5 The LED 1 can be used to indicate the working status of the entire debugging device 10 with signal transmission and serial communication functions. For example, when the LED 1 is on, it can indicate that the entire device is in normal operation, and when the LED 1 is off, it indicates that a fault has occurred in the entire device.

[0038] In one embodiment, such as this embodiment, a debugging system 100 with signal transmission and serial communication functions is also provided. Figure 6 , Figure 6 It is a block diagram of a debugging system with signal transmission and serial communication functions provided by an embodiment of the utility model. The debugging system 100 with signal transmission and serial communication functions includes an external device 20, a product under test 30, a debugging device 40 and the above-mentioned debugging device 10 with signal transmission and serial communication functions, wherein the signal input module 111 of the debugging device 10 with signal transmission and serial communication functions is connected to the external device 20, the signal output module 112 of the debugging device 10 with signal transmission and serial communication functions is connected to the HDMI interface of the product under test 30, and the debugging input module 121 of the debugging device 10 with signal transmission and serial communication functions is connected to the debugging device 40. It should be noted that, in this embodiment, the external device 20 is a device that can provide HDMI signals. The product under test 30 can be a device with an HDMI interface such as a television, a projector, and a computer. The debugging device 40 is a terminal host computer with serial communication and debugging functions, such as a PC host computer.

[0039] In summary, through the debugging device 10 with signal transmission and serial communication functions of the utility model, the HDMI interface of the tested product 30 can realize HDMI signal transmission and serial communication working simultaneously during production testing, so as to support the synchronization of signal transmission test and serial communication test, greatly saving test time and improving the production test efficiency of the HDMI interface.

[0040] The debugging device with signal transmission and serial communication functions provided by the utility model comprises a signal transmission unit and a debugging conversion unit, wherein the signal transmission unit is used to connect an external device with an HDMI interface of a product under test, and transmits an HDMI signal input by the external device to the HDMI interface to realize the transmission of the HDMI signal, while the debugging conversion unit receives a serial communication signal of the debugging device, and transmits the serial communication signal to the HDMI interface through the signal transmission unit to realize the serial debugging of the HDMI interface, and the cooperation of the signal transmission unit and the debugging conversion unit enables the HDMI interface to synchronously perform serial communication debugging test while performing signal transmission test, thereby greatly improving the production test efficiency of the HDMI interface. The debugging device and system with signal transmission and serial communication functions disclosed by the utility model solve the problem of low production test efficiency of the existing HDMI interface.

[0041] The above is only a specific implementation of the utility model, but the protection scope of the utility model is not limited thereto. Any technician familiar with the technical field can easily think of various equivalent modifications or replacements within the technical scope disclosed by the utility model, and these modifications or replacements should be included in the protection scope of the utility model. Therefore, the protection scope of the utility model should be based on the protection scope of the claims.

Claims

1. A debugging device with signal transmission and serial communication functions, characterized in that: include: A signal transmission unit, one end of which is used to connect to an external device, and the other end of which is used to connect to the HDMI interface of the product under test, the signal transmission unit is used to receive an HDMI signal input by the external device and transmit the HDMI signal to the HDMI interface; A debugging conversion unit, one end of which is connected to the signal transmission unit and the other end of which is used to connect to the debugging device, and the debugging conversion unit is used to convert the signal input by the debugging device into a serial communication signal; Wherein, while the signal transmission unit transmits the HDMI signal to the HDMI interface, the serial communication signal is transmitted to the HDMI interface through the signal transmission unit to perform serial communication to achieve debugging.

2. The debugging device with signal transmission and serial communication functions according to claim 1, characterized in that: The debugging conversion unit includes a debugging input module, a conversion module and a crystal oscillator module. One end of the debugging input module is used to connect to the debugging device, and the other end is connected to the conversion module. One end of the conversion module is connected to the crystal oscillator module, and the other end is connected to the signal transmission unit.

3. The debugging device with signal transmission and serial communication functions according to claim 2, characterized in that: The conversion module includes a CH340G chip, the UD+ pin and UD- pin of the CH340G chip are both connected to the debugging input module, the XTAL_O pin and XTAL_I pin of the CH340G chip are both connected to the crystal oscillator module, and the TX pin and RX pin of the CH340G chip are both connected to the signal transmission unit.

4. The debugging device with signal transmission and serial communication functions according to claim 3, characterized in that: The debugging input module includes a USB adapter interface, an inductor and a first capacitor, one end of the USB adapter interface is used to connect to the debugging device, and the other end is connected to the UD+ pin and UD- pin of the CH340G chip; one end of the inductor is connected to the power supply end of the USB adapter interface, and the other end is connected to one end of the first capacitor and the input voltage, and the other end of the first capacitor is grounded.

5. The debugging device with signal transmission and serial communication functions according to claim 3, characterized in that: The crystal oscillator module includes a crystal oscillator, a second capacitor and a third capacitor. The first connection end of the crystal oscillator is connected to the XTAL_I pin of the CH340G chip and one end of the third capacitor, and the other end of the third capacitor is grounded. The second connection end of the crystal oscillator is connected to the XTAL_O pin of the CH340G chip and one end of the second capacitor, the other end of the second capacitor is grounded, and the third connection end of the crystal oscillator is grounded.

6. The debugging device with signal transmission and serial communication functions according to claim 1, characterized in that: The signal transmission unit includes a signal input module and a signal output module, one end of the signal input module is used to connect to the external device, and the other end is connected to the signal output module; one end of the signal output module is used to connect to the HDMI interface, and the other end is connected to the signal input module and the debugging conversion unit.

7. The debugging device with signal transmission and serial communication functions according to claim 1, characterized in that: The debugging device with signal transmission and serial communication functions also includes a voltage conversion unit and an indication unit, one end of the voltage conversion unit is used to receive an input voltage, and the other end is connected to one end of the conversion unit and the indication unit, and the other end of the indication unit is connected to the debugging conversion unit. The voltage conversion unit is used to convert the input voltage into a power supply voltage to supply power to the debugging conversion unit and the indication unit, and the indication unit is used to indicate the working status of the debugging device with signal transmission and serial communication functions.

8. The debugging device with signal transmission and serial communication functions according to claim 7, characterized in that: The voltage conversion unit includes a voltage conversion chip, a fourth capacitor, a fifth capacitor, a sixth capacitor and a seventh capacitor. The power input end of the voltage conversion chip is connected to the input voltage, one end of the fourth capacitor and the fifth capacitor, and the other ends of the fourth capacitor and the fifth capacitor are grounded. The power input end is used to receive the input voltage; the power output end of the voltage conversion chip is connected to the debugging conversion unit, the indication unit, one end of the sixth capacitor and the seventh capacitor, and the other ends of the sixth capacitor and the seventh capacitor are grounded. The power output end is used to output the supply voltage.

9. The debugging device with signal transmission and serial communication functions according to claim 8, characterized in that: The indication unit includes a first LED lamp, a second LED lamp, a first resistor and a second resistor, one end of the first resistor is connected to the power output end, the other end is connected to the positive pole of the first LED lamp, and the negative pole of the first LED lamp is connected to the debugging conversion unit; one end of the second resistor is connected to the power output end, the other end is connected to the positive pole of the second LED lamp, and the negative pole of the second LED lamp is connected to the debugging conversion unit.

10. A debugging system with signal transmission and serial communication functions, characterized in that: The debugging system with signal transmission and serial communication functions comprises an external device, a product under test, a debugging device, and a debugging apparatus with signal transmission and serial communication functions as described in any one of claims 1 to 9, wherein a signal input module of the debugging apparatus with signal transmission and serial communication functions is connected to the external device, a signal output module of the debugging apparatus with signal transmission and serial communication functions is connected to an HDMI interface of the product under test, and a debugging input module of the debugging apparatus with signal transmission and serial communication functions is connected to the debugging device.

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