CN111459736A - Plate electrode debugging method of video processing chip - Google Patents
Plate electrode debugging method of video processing chip Download PDFInfo
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- 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
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- G—PHYSICS
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- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F13/00—Interconnection of, or transfer of information or other signals between, memories, input/output devices or central processing units
- G06F13/38—Information transfer, e.g. on bus
- G06F13/42—Bus transfer protocol, e.g. handshake; Synchronisation
- G06F13/4282—Bus transfer protocol, e.g. handshake; Synchronisation on a serial bus, e.g. I2C bus, SPI bus
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Abstract
The invention relates to a plate electrode debugging method of a video processing chip, which comprises the following steps: and designing debugging software capable of communicating with the video processing chip, and performing online debugging on the video processing chip by using the debugging software. The debugging software supports one or more communication modes and has the functions of displaying the chip register value and/or the analysis script of the video processing chip and displaying the script execution result. The invention can provide guarantee in the chip verification process and the mass production process, and improve the working efficiency.
Description
Technical Field
The invention belongs to the technical field of chip debugging, and particularly relates to a plate electrode debugging method of a video processing chip.
Background
After the chip is subjected to tape-out, the chip is welded on a circuit board, connected with peripheral equipment and then electrified for debugging. At present, when a chip is debugged, a method is adopted to directly modify the value of a register in firmware, or modify the value of the register through an emulator, so as to debug the chip. The existing debugging method needs to frequently modify and burn the firmware, and has the problems of inconvenient debugging and low debugging efficiency.
Disclosure of Invention
The invention aims to provide a plate electrode debugging method of a video processing chip, which is easy to implement and can improve the working efficiency.
In order to achieve the purpose, the invention adopts the technical scheme that:
a plate debugging method of a video processing chip is used for carrying out plate debugging on the video processing chip, and comprises the following steps: and designing debugging software capable of communicating with the video processing chip, and performing online debugging on the video processing chip by using the debugging software.
When the video processing chip comprises an MCU and a first type interface which is communicated with the MCU based on a first type communication protocol, the debugging software is designed to support a communication mode based on the first type communication protocol and has a function of displaying a chip register value of the video processing chip, the debugging software sends a read-write instruction aiming at the chip register through the first type interface, the video processing chip responds and processes the read-write instruction and transmits the value of the chip register to the debugging software for displaying, thereby realizing online debugging of the video processing chip.
When the video processing chip comprises an MCU and a first type interface which is communicated with the MCU based on a first type communication protocol, the debugging software is designed to support a communication mode based on the first type communication protocol and has the functions of analyzing a script and displaying a script execution result; the debugging software analyzes the script and sends out a read-write instruction aiming at a chip register of the video processing chip through the first type interface according to the read-write instruction, the video processing chip responds and processes the read-write instruction, and the value of the chip register is used as a script execution result and is transmitted to the debugging software to be displayed, so that the video processing chip is debugged on line.
When the video processing chip comprises an MCU and a first type interface which is communicated with the MCU based on a first type communication protocol, the debugging software is designed to support a communication mode based on the first type communication protocol and has the functions of displaying a chip register value of the video processing chip and analyzing a script and displaying a script execution result; the debugging software sends a read-write instruction aiming at the chip register through the first type interface, the video processing chip responds and processes the read-write instruction, and transmits the value of the chip register to the debugging software for displaying, thereby realizing online debugging of the video processing chip; or the debugging software analyzes the script and sends a read-write instruction aiming at the chip register of the MCU through the first type interface according to the read-write instruction, the video processing chip responds and processes the read-write instruction and transmits the value of the chip register as a script execution result to the debugging software for displaying, thereby realizing online debugging of the video processing chip.
When the video processing chip comprises an MCU and a second type interface which is communicated with the MCU based on a second type communication protocol, the debugging software is designed to support a communication mode based on the second type communication protocol and has the function of displaying the value of a chip register of the video processing chip; the debugging software sends a read-write instruction aiming at a chip register of the video processing chip through the second type interface, the MCU responds and processes the read-write instruction, and transmits the value of the chip register to the debugging software for displaying, thereby realizing online debugging of the video processing chip.
When the video processing chip comprises an MCU and a second type interface which is communicated with the MCU based on a second type communication protocol, the debugging software is designed to support a communication mode based on the second type communication protocol and has the functions of analyzing a script and displaying a script execution result; the debugging software analyzes the script and sends out a read-write instruction aiming at a chip register of the video processing chip through the second type interface according to the read-write instruction, the MCU responds and processes the read-write instruction and transmits the value of the chip register as a script execution result to the debugging software for displaying, thereby realizing online debugging of the video processing chip.
When the video processing chip comprises an MCU and a second type interface which is communicated with the MCU based on a second type communication protocol, the debugging software is designed to support a communication mode based on the second type communication protocol and has the functions of displaying a chip register value of the video processing chip and analyzing a script and displaying a script execution result; the debugging software sends a read-write instruction aiming at the chip register through the second type interface, the MCU responds and processes the read-write instruction, and transmits the value of the chip register to the debugging software for displaying, thereby realizing online debugging of the video processing chip; or the debugging software analyzes the script and sends out a read-write instruction aiming at the chip register through the second type interface according to the read-write instruction, the MCU responds and processes the read-write instruction and transmits the value of the chip register as a script execution result to the debugging software for displaying, thereby realizing online debugging of the video processing chip.
When the video processing chip comprises an MCU, a first type interface which is communicated with the MCU based on a first type communication protocol and a second type interface which is communicated with the MCU based on a second type communication protocol, the debugging software is designed to support a communication mode based on the first type communication protocol and a communication mode based on the second type communication protocol, and the debugging software has the functions of displaying a chip register value of the video processing chip and analyzing a script and displaying a script execution result; the debugging software sends a read-write instruction aiming at the chip register through the first type interface, the video processing chip responds and processes the read-write instruction, and transmits the value of the chip register to the debugging software for displaying, thereby realizing online debugging of the video processing chip; or the debugging software analyzes the script and sends out a read-write instruction aiming at the chip register through the first type interface according to the read-write instruction, the video processing chip responds and processes the read-write instruction and transmits the value of the chip register as a script execution result to the debugging software for displaying, thereby realizing online debugging of the video processing chip; or the debugging software sends a read-write instruction aiming at the chip register through the second type interface, the MCU responds and processes the read-write instruction, and transmits the value of the chip register to the debugging software for displaying, thereby realizing online debugging of the video processing chip; or the debugging software analyzes the script and sends out a read-write instruction aiming at the chip register through the second type interface according to the read-write instruction, the MCU responds and processes the read-write instruction and transmits the value of the chip register as a script execution result to the debugging software for displaying, thereby realizing online debugging of the video processing chip.
The first type of interface is an I2C interface.
The second type of interface is a UART interface.
Due to the application of the technical scheme, compared with the prior art, the invention has the following advantages: the invention can provide guarantee in the chip verification process and the mass production process, and improve the working efficiency.
Drawings
FIG. 1 is a block diagram of a plateplate debug of a video processing chip.
Fig. 2 is a flow of reading and writing registers in the I2C mode in the plate debugging method of the video processing chip of the present invention.
FIG. 3 is a script processing flow in I2C mode in the plate debugging method of the video processing chip according to the present invention.
FIG. 4 is a diagram of a UART packet.
Fig. 5 is a read-write flow of a register in a UART mode in the board debugging method of the video processing chip of the present invention.
Fig. 6 is a script processing flow in the UART mode in the board debugging method of the video processing chip of the present invention.
Detailed Description
The invention will be further described with reference to examples of embodiments shown in the drawings to which the invention is attached.
The first embodiment is as follows: a plate debugging method of a video processing chip comprises the following steps: and designing debugging software capable of communicating with the video processing chip, and performing online debugging on the video processing chip by using the debugging software. The debugging software runs on the PC to form a PC debugging tool (PC Debug tool).
When the video processing chip to be debugged has different configurations, different functions of the debugging software can be designed to correspondingly realize the debugging method.
Configuration 1: when the video processing chip comprises the MCU and a first interface which is communicated with the MCU based on a first communication protocol, the debugging software is designed to support a communication mode based on the first communication protocol and has the function of displaying the chip register value of the video processing chip, the debugging software sends a read-write instruction aiming at the chip register through the first interface, the video processing chip responds and processes the read-write instruction, and transmits the value of the chip register to the debugging software for displaying, thereby realizing the online debugging of the video processing chip.
Configuration 2: when the video processing chip comprises an MCU and a first type interface which is communicated with the MCU based on a first type communication protocol, the debugging software is designed to support a communication mode based on the first type communication protocol and has the functions of analyzing the script and displaying the script execution result; the debugging software analyzes the script and sends out a read-write instruction aiming at the chip register of the MCU through the first type interface according to the read-write instruction, the video processing chip responds and processes the read-write instruction, and the value of the chip register is used as a script execution result and is transmitted to the debugging software to be displayed, so that the video processing chip is debugged on line.
Configuration 3: when the video processing chip comprises an MCU and a first type interface which is communicated with the MCU based on a first type communication protocol, the debugging software is designed to support the communication mode based on the first type communication protocol and has the functions of displaying the chip register value of the video processing chip and analyzing the script and displaying the script execution result; the debugging software sends a read-write instruction aiming at the chip register through the first type interface, the video processing chip responds and processes the read-write instruction, and the value of the chip register is transmitted to the debugging software for displaying, so that the video processing chip is debugged on line; or the debugging software analyzes the script and sends out a read-write instruction aiming at a chip register of the video processing chip through the first type interface according to the read-write instruction, the video processing chip responds and processes the read-write instruction, and the value of the chip register is used as a script execution result and is transmitted to the debugging software to be displayed, so that the video processing chip is debugged on line.
Configuration 4: when the video processing chip comprises an MCU and a second type interface communicated with the MCU based on a second type communication protocol, the debugging software is designed to support the communication mode based on the second type communication protocol and has the function of displaying the value of a chip register of the video processing chip; the debugging software sends a read-write instruction aiming at the chip register of the video processing chip through the second type interface, the MCU responds and processes the read-write instruction, and transmits the value of the chip register to the debugging software for displaying, thereby realizing online debugging of the video processing chip.
Configuration 5: when the video processing chip comprises an MCU and a second type interface which is communicated with the MCU based on a second type communication protocol, the debugging software is designed to support the communication mode based on the second type communication protocol and has the functions of analyzing the script and displaying the script execution result; the debugging software analyzes the script and sends a read-write instruction aiming at a chip register of the video processing chip through the second type interface according to the read-write instruction, the MCU responds and processes the read-write instruction and transmits the value of the chip register as a script execution result to the debugging software for displaying, thereby realizing online debugging of the video processing chip.
Configuration 6: when the video processing chip comprises an MCU and a second type interface communicated with the MCU based on a second type communication protocol, the debugging software is designed to support the communication mode based on the second type communication protocol and has the functions of displaying the chip register value of the video processing chip and analyzing scripts and displaying the script execution result; the debugging software sends a read-write instruction aiming at the chip register through the second type interface, the MCU responds and processes the read-write instruction, and transmits the value of the chip register to the debugging software for displaying, thereby realizing online debugging of the video processing chip; or the debugging software analyzes the script and sends out a read-write instruction aiming at the chip register through the second type interface, the MCU responds and processes the read-write instruction and transmits the value of the chip register as a script execution result to the debugging software for displaying, thereby realizing online debugging of the video processing chip.
Configuration 7: when the video processing chip comprises an MCU, a first type interface communicated with the MCU based on a first type communication protocol and a second type interface communicated with the MCU based on a second type communication protocol, the debugging software is designed to support a communication mode based on the first type communication protocol and a communication mode based on the second type communication protocol, and the debugging software has the functions of displaying a chip register value of the video processing chip and analyzing a script and displaying a script execution result; the debugging software sends a read-write instruction aiming at the chip register through the first type interface, the video processing chip responds and processes the read-write instruction, and the value of the chip register is transmitted to the debugging software for displaying, so that the video processing chip is debugged on line; or the debugging software analyzes the script and sends out a read-write instruction aiming at the chip register through the first type interface according to the read-write instruction, the video processing chip responds and processes the read-write instruction, and the value of the chip register is used as a script execution result and is transmitted to the debugging software to be displayed, so that the video processing chip is debugged on line; or, the debugging software sends a read-write instruction aiming at the chip register through the second type interface, the MCU responds and processes the read-write instruction, and transmits the value of the chip register to the debugging software for displaying, thereby realizing online debugging of the video processing chip; or the debugging software analyzes the script and sends out a read-write instruction aiming at the chip register through the second type interface, the MCU responds and processes the read-write instruction and transmits the value of the chip register as a script execution result to the debugging software for displaying, thereby realizing online debugging of the video processing chip.
The first type of interface involved in the configuration of each video processing chip is an I2C interface, and the second type of interface is a UART interface.
An example is given below for the above configuration 7.
As shown in fig. 1, a video processing chip is a high-speed connection chip supporting DisplayPort to HDMI for USB Type-C interface. The Type-C input port is compatible with DisplayPort Specification1.3 and Embedded DisplayPort (eDP) Specification 1.4, and the input end can support the overturning function of the USB Type-C cable insertion direction through the connection detection circuit; the output end is compatible with HDMI 2.0 and 1.4 and DVI 1.0 standards, and meanwhile, the chip can support HDCP 2.2 standards and 1.4 standards through a built-in HDCP key. By means of the built-in MCU and the on-chip Flash, the chip can flexibly support EDID buffer and add new functions in firmware.
Specifically, the video processing chip comprises the following components: DP Rx is a Display Port receiving unit, HDCP Rx is an encryption module receiving unit, HDCP Tx is an encryption module sending unit, HDMI Tx is an HDMI sending unit, Type-C is a USB Type-C interface, MTP is a unit for storing firmware, I2C Master is an I2C Master unit, EEPROM is a storage unit, 8051 is a microcontroller MCU, I2C Slave is an I2C Slave interface, and UART is a serial interface.
The notebook computer or the mobile phone is connected with the circuit board through the USB Type-C interface of the video processing chip, and the circuit board outputs video data to the display through the HDMI after signal processing. In this process, the debugging software (debugging tool) running on the PC debugs the chip online through the I2CSlave interface and the UART interface in two modes, i.e., I2C mode and UART mode. The debugging method of the I2C interface can be independent of the 8051MCU, configure the chip register in the debugging tool running on the PC, and execute the pre-programmed script program. The debugging method of the UART interface is based on burning 8051 firmware and is carried out, a set of UART communication protocol is defined, and then a chip register is read and written and a script program is operated.
In the I2C interface mode, the register read-write is carried out based on the I2C protocol. The I2C protocol transmission data comprises three parts: device address, register data. The device address contains the read or write mode.
FIG. 2 shows the flow of reading and writing registers in I2C mode.
1) Debugging software (namely a debugging tool PC Debug tool) sends out an instruction for reading and writing the chip register through an I2C interface;
2) the video processing chip responds and processes the read-write command, if the read command is the read command, the value of the chip register is read and transmitted back, and if the read command is the write command, the value is directly written into the corresponding chip register;
3) and transmitting the value of the chip register to debugging software for displaying, namely updating the register value on an interface by the PC Debug tool.
After the read-write instruction is executed once, if the read-write of other chip registers needs to be continued, the steps 1) to 3) are executed again.
FIG. 3 is a script processing flow in I2C mode.
1) The debugging software (namely a debugging tool PC Debug tool) analyzes the script;
2) debugging software sends out an instruction for reading and writing the chip register through an I2C interface;
3) the video processing chip responds and processes the read-write command, if the read command is the read command, the value of the chip register is read and transmitted back, and if the read command is the write command, the value is directly written into the corresponding chip register;
4) the values of the chip registers are displayed on the debug tool as a result of script execution.
After executing the script processing once, if the script needs to be executed continuously, the steps 1) to 4) are executed again.
In the UART interface mode, a UART communication packet is defined to transmit data. As shown in fig. 4, the UART data includes four parts: read-write instruction, register address, register data, check code.
FIG. 5 shows the process of reading and writing registers in UART mode.
1) Debugging software (namely a debugging tool PC Debug tool) sends an instruction packet for reading and writing the chip register through a UART interface;
2) the 8051MCU responds and processes the read-write instruction, if the read instruction is the read instruction, the chip register value is read and returned, and if the read instruction is the write instruction, the value is directly written into the corresponding chip register;
3) and transmitting the value of the chip register to debugging software for displaying, namely updating the register value on an interface by the PC Debug tool.
After the read-write instruction is executed once, if the read-write of other chip registers needs to be continued, the steps 1) to 3) are executed again.
FIG. 6 is a script processing flow in UART mode.
1) The debugging software (namely a debugging tool PC Debug tool) analyzes the script;
2) debugging software sends out an instruction for reading and writing the chip register through a UART interface;
3) the 8051MCU responds and processes the read-write instruction, if the read instruction is the read instruction, the value of the chip register is read and returned, and if the read instruction is the write instruction, the value is directly written into the corresponding chip register;
4) the values of the chip registers are displayed on the debug tool as a result of script execution.
After executing the script processing once, if the script needs to be executed continuously, the steps 1) to 4) are executed again.
According to the scheme, PC upper computer software is designed, online debugging can be performed on the video processing chip through the I2C interface and the UART interface, guarantee is provided in the chip verification process and the mass production process, and the working efficiency is improved.
The terms referred to in the above schemes are explained as follows:
display Port, a video interface.
HDCP High-bandwidth Digital Content Protection, video data encryption method.
HDMI, High Definition Multimedia Interface.
Rx: Receiver。
Tx: Transmitter。
Type-C, USB Type-C, a USB interface.
8051MCU core.
I2C Inter-Integrated Circuit Bus, a Bus.
MTP：Multi-Time Programable。
UART：Universal Asynchronous Receiver/Transmitter。
EEPROM：Electrically Erasable Programmable read only memory。
The above embodiments are merely illustrative of the technical ideas and features of the present invention, and the purpose thereof is to enable those skilled in the art to understand the contents of the present invention and implement the present invention, and not to limit the protection scope of the present invention. All equivalent changes and modifications made according to the spirit of the present invention should be covered within the protection scope of the present invention.
Claims (10)
1. A plate debugging method of a video processing chip is used for carrying out plate debugging on the video processing chip and is characterized in that: the plate electrode debugging method of the video processing chip comprises the following steps: and designing debugging software capable of communicating with the video processing chip, and performing online debugging on the video processing chip by using the debugging software.
2. The board pole debugging method of the video processing chip according to claim 1, wherein: when the video processing chip comprises an MCU and a first type interface which is communicated with the MCU based on a first type communication protocol, the debugging software is designed to support a communication mode based on the first type communication protocol and has a function of displaying a chip register value of the video processing chip, the debugging software sends a read-write instruction aiming at the chip register through the first type interface, the video processing chip responds and processes the read-write instruction and transmits the value of the chip register to the debugging software for displaying, thereby realizing online debugging of the video processing chip.
3. The board pole debugging method of the video processing chip according to claim 1, wherein: when the video processing chip comprises an MCU and a first type interface which is communicated with the MCU based on a first type communication protocol, the debugging software is designed to support a communication mode based on the first type communication protocol and has the functions of analyzing a script and displaying a script execution result; the debugging software analyzes the script and sends out a read-write instruction aiming at a chip register of the video processing chip through the first type interface according to the read-write instruction, the video processing chip responds and processes the read-write instruction, and the value of the chip register is used as a script execution result and is transmitted to the debugging software to be displayed, so that the video processing chip is debugged on line.
4. The board pole debugging method of the video processing chip according to claim 1, wherein: when the video processing chip comprises an MCU and a first type interface which is communicated with the MCU based on a first type communication protocol, the debugging software is designed to support a communication mode based on the first type communication protocol and has the functions of displaying a chip register value of the video processing chip and analyzing a script and displaying a script execution result; the debugging software sends a read-write instruction aiming at the chip register through the first type interface, the video processing chip responds and processes the read-write instruction, and transmits the value of the chip register to the debugging software for displaying, thereby realizing online debugging of the video processing chip; or the debugging software analyzes the script and sends out a read-write instruction aiming at a chip register of the video processing chip through the first type interface according to the read-write instruction, the video processing chip responds and processes the read-write instruction and transmits the value of the chip register as a script execution result to the debugging software for displaying, thereby realizing online debugging of the video processing chip.
5. The board pole debugging method of the video processing chip according to claim 1, wherein: when the video processing chip comprises an MCU and a second type interface which is communicated with the MCU based on a second type communication protocol, the debugging software is designed to support a communication mode based on the second type communication protocol and has the function of displaying the value of a chip register of the video processing chip; the debugging software sends a read-write instruction aiming at a chip register of the video processing chip through the second type interface, the MCU responds and processes the read-write instruction, and transmits the value of the chip register to the debugging software for displaying, thereby realizing online debugging of the video processing chip.
6. The board pole debugging method of the video processing chip according to claim 1, wherein: when the video processing chip comprises an MCU and a second type interface which is communicated with the MCU based on a second type communication protocol, the debugging software is designed to support a communication mode based on the second type communication protocol and has the functions of analyzing a script and displaying a script execution result; the debugging software analyzes the script and sends out a read-write instruction aiming at a chip register of the video processing chip through the second type interface according to the read-write instruction, the MCU responds and processes the read-write instruction and transmits the value of the chip register as a script execution result to the debugging software for displaying, thereby realizing online debugging of the video processing chip.
7. The board pole debugging method of the video processing chip according to claim 1, wherein: when the video processing chip comprises an MCU and a second type interface which is communicated with the MCU based on a second type communication protocol, the debugging software is designed to support a communication mode based on the second type communication protocol and has the functions of displaying a chip register value of the video processing chip and analyzing a script and displaying a script execution result; the debugging software sends a read-write instruction aiming at the chip register through the second type interface, the MCU responds and processes the read-write instruction, and transmits the value of the chip register to the debugging software for displaying, thereby realizing online debugging of the video processing chip; or the debugging software analyzes the script and sends out a read-write instruction aiming at the chip register through the second type interface according to the read-write instruction, the MCU responds and processes the read-write instruction and transmits the value of the chip register as a script execution result to the debugging software for displaying, thereby realizing online debugging of the video processing chip.
8. The board pole debugging method of the video processing chip according to claim 1, wherein: when the video processing chip comprises an MCU, a first type interface which is communicated with the MCU based on a first type communication protocol and a second type interface which is communicated with the MCU based on a second type communication protocol, the debugging software is designed to support a communication mode based on the first type communication protocol and a communication mode based on the second type communication protocol, and the debugging software has the functions of displaying a chip register value of the video processing chip and analyzing a script and displaying a script execution result; the debugging software sends a read-write instruction aiming at the chip register through the first type interface, the video processing chip responds and processes the read-write instruction, and transmits the value of the chip register to the debugging software for displaying, thereby realizing online debugging of the video processing chip; or the debugging software analyzes the script and sends out a read-write instruction aiming at the chip register through the first type interface according to the read-write instruction, the video processing chip responds and processes the read-write instruction and transmits the value of the chip register as a script execution result to the debugging software for displaying, thereby realizing online debugging of the video processing chip; or the debugging software sends a read-write instruction aiming at the chip register through the second type interface, the MCU responds and processes the read-write instruction, and transmits the value of the chip register to the debugging software for displaying, thereby realizing online debugging of the video processing chip; or the debugging software analyzes the script and sends out a read-write instruction aiming at the chip register through the second type interface according to the read-write instruction, the MCU responds and processes the read-write instruction and transmits the value of the chip register as a script execution result to the debugging software for displaying, thereby realizing online debugging of the video processing chip.
9. The method of claim 2, 3, 4 or 8, wherein the method comprises: the first type of interface is an I2C interface.
10. The method of claim 5, 6, 7 or 8, wherein the method comprises: the second type of interface is a UART interface.
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