CN107515958B

CN107515958B - Circuit wiring inspection method and device

Info

Publication number: CN107515958B
Application number: CN201610442534.9A
Authority: CN
Inventors: 王隆峰
Original assignee: Maipu Communication Technology Co Ltd
Current assignee: Maipu Communication Technology Co Ltd
Priority date: 2016-06-16
Filing date: 2016-06-16
Publication date: 2020-06-02
Anticipated expiration: 2036-06-16
Also published as: CN107515958A

Abstract

The embodiment of the invention provides a circuit wiring checking method and a device, which relate to the technical field of electronics, can check the pull-up resistance design of circuit wiring according to a netlist file of the circuit wiring, and comprise the following steps: the method comprises the steps of obtaining a netlist file of circuit wiring, determining a first signal line according to the netlist file, determining a first device according to the netlist file, determining a second device according to the netlist file when the type of the first device is determined to be a resistor according to the netlist file, and generating circuit wiring error information when the type of the second device is determined to be a resistor according to the netlist file and the other end of the second device is connected with a power supply through the signal line. The invention is used for checking circuit wiring.

Description

Circuit wiring inspection method and device

Technical Field

The present invention relates to the field of electronic technologies, and in particular, to a method and an apparatus for inspecting circuit layout.

Background

At present, in the design process of an electronic product, a circuit layout of a circuit in the electronic product is usually simulated by using circuit editing software, and because increasingly complex circuit applications and rules corresponding to different circuits require certain differences, and the experience level of a user using the circuit editing software also has certain differences, the circuit layout simulated by the circuit editing software often has certain errors or places contradictory to the rules corresponding to the circuits, wherein the repeated design of a pull-up resistor is one of more serious errors in the circuit design. The pull-up resistor is generally used for pulling the voltage of an electrical signal on a signal line in a circuit to a high potential, and if the pull-up resistor is repeatedly designed in the circuit, the rise time, the fall time, the level value and the like of the electrical signal do not meet the design requirements, so that the circuit is unstable in operation.

In the prior art, generally, after a circuit wiring diagram of a circuit is planned by circuit editing software, the circuit wiring is automatically checked to avoid errors such as repeated design of pull-up resistors in the circuit wiring, wherein the method for checking the circuit wiring generally comprises the steps of obtaining a database in which correspondence between devices and circuit rules is recorded, searching the database for rules corresponding to the devices included in the circuit wiring, comparing connection modes of the devices in the circuit wiring with the rules corresponding to the devices, and when the connection modes of the devices in the circuit wiring all meet the rules corresponding to the devices, considering that the circuit wiring passes the check.

Since the database used in the above technical solution needs to record the rule corresponding to the device included in the circuit wiring, when a new device appears, the rule corresponding to the new device and the new device needs to be updated to the database to meet the requirement of the above technical solution, and when the existing device in the database is eliminated, the eliminated device and the rule corresponding to the eliminated device need to be deleted from the database for the purpose of reducing the resources consumed by database retrieval. With the continuous development of electronic technology, the speed of new devices and the speed of existing device elimination in a database are increased continuously, so that the updating frequency of the database is increased continuously, and a large amount of manpower and material resources are consumed for updating the database, so that the workload of checking circuit wiring is increased, and the cost of checking the circuit wiring is increased.

Disclosure of Invention

The application provides a circuit wiring checking method and device, which can check the pull-up resistance design of circuit wiring according to a netlist file of the circuit wiring, reduce the workload of circuit wiring checking and reduce the cost of the circuit wiring checking.

In a first aspect, an embodiment of the present invention provides a circuit wiring inspection method, including:

the method comprises the steps of obtaining a netlist file of circuit wiring, wherein the netlist file comprises a device identifier, a signal line identifier and a signal line device connection relation, the device identifier is used for indicating the type of a device corresponding to the device identifier in the circuit wiring, the signal line identifier is used for indicating the type of a signal line corresponding to the signal line identifier in the circuit wiring, and the signal line device connection relation is used for indicating the connection relation between the signal line corresponding to the signal line identifier in the circuit wiring and the device corresponding to the device identifier;

determining a first signal line according to the netlist file, wherein the first signal line is a signal line in circuit wiring and the type of the first signal line is a power line;

determining a first device according to the netlist file, wherein the first device is a device in circuit wiring, and one end of the first device is connected with the other end of the first signal line;

when the type of the first device is determined to be a resistor according to the netlist file, determining a second device according to the netlist file, wherein one end of the second device is connected with the other end of the first device through a connecting module, the connecting module comprises K resistors connected in series through signal lines, K is larger than or equal to 0, and the connecting module is respectively connected with the second device and the first device through the signal lines;

and generating circuit wiring error information when the type of the second device is determined to be resistance according to the netlist file and the other end of the second device is connected with a power supply through a signal line.

In a second aspect, an embodiment of the present invention provides a circuit wiring inspection apparatus including:

the device comprises an acquisition module, a storage module and a processing module, wherein the acquisition module is used for acquiring a netlist file of circuit wiring, the netlist file comprises a device identifier, a signal line identifier and a signal line device connection relation, the device identifier is used for indicating the device type of a device corresponding to the device identifier in the circuit wiring, the signal line identifier is used for indicating the signal line type of a signal line corresponding to the signal line identifier in the circuit wiring, and the signal line device connection relation is used for indicating the connection relation between the signal line corresponding to the signal line identifier in the circuit wiring and the device corresponding to the device identifier;

the processing module is used for determining a first signal line according to the netlist file acquired by the acquisition module, wherein the first signal line is a signal line in circuit wiring, and the type of the signal line of the first signal line is a power line;

the processing module is also used for determining a first device according to the netlist file acquired by the acquisition module, the first device is a device in circuit wiring, and one end of the first device is connected with the other end of the first signal wire

The processing module is further used for determining a second device according to the netlist file acquired by the acquisition module when the device type of the first device is determined to be the resistor according to the netlist file acquired by the acquisition module, the second device is a device with one end connected with the other end of the first device through a connection module, the connection module comprises K resistors connected in series through signal lines, wherein K is larger than or equal to 0, and the connection module is respectively connected with the second device and the first device through the signal lines;

and the alarm module is used for generating circuit wiring error information when the processing module determines that the device type of the second device is a resistor according to the netlist file and the other end of the second device is connected with the power supply through a signal line.

According to the circuit wiring inspection method and device provided by the embodiment of the application, firstly, a netlist file is obtained, the netlist file comprises a device identifier, a signal line identifier and a signal line device connection relation, so that the type of a device in a circuit, the type of a signal line and the connection relation between the signal line and the device are obtained, secondly, a first device is determined according to the netlist file, the first device is connected with a power supply through the signal line in the circuit, and namely the first device is a pull-up resistor; then, determining a second device connected with the first device through a connecting module according to the netlist file, namely connecting the first device with the second device through K resistors connected in series through signal lines, wherein the resistors belonging to the connecting module are not connected with a power supply at two ends, so that the possibility of being used as pull-up resistors does not exist; and judging whether the second device is a resistor and the other end of the second device is connected with a power supply through a signal wire, namely judging whether the second device is also a pull-up resistor, and sending circuit wiring error information when the second device is also the pull-up resistor, so as to warn when repeated design errors of the pull-up resistor exist in the circuit wiring. Therefore, the circuit wiring inspection method provided by the embodiment of the application can inspect the pull-up resistor design in the circuit wiring according to the netlist file of the circuit wiring, so that the workload of circuit wiring inspection is reduced, and the cost of circuit wiring inspection is reduced.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained based on these drawings without inventive efforts.

FIG. 1 is a schematic flow chart of a circuit layout inspection method according to an embodiment of the present invention;

FIG. 2 is a schematic flow chart of a circuit layout inspection method according to another embodiment of the present invention;

FIG. 3 is a schematic flow chart of a circuit layout inspection method according to another embodiment of the present invention;

fig. 4 is a schematic structural diagram of a circuit wiring inspection apparatus according to an embodiment of the present invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

For the convenience of clearly describing the technical solutions of the embodiments of the present invention, in the embodiments of the present invention, the words "first", "second", and the like are used for distinguishing the same items or similar items with basically the same functions and actions, and those skilled in the art can understand that the words "first", "second", and the like are not limited in number or execution order.

In general, after a circuit wiring diagram is simulated by circuit editing software, the circuit wiring diagram needs to be checked to avoid errors such as repeated design of a pull-up resistor in the circuit wiring, wherein the pull-up resistor is generally used for pulling a voltage of an electric signal on a signal line in the circuit to a high potential, and if repeated design of the pull-up resistor occurs in the circuit, the rise time, the fall time, the level value and the like of the electric signal do not meet design requirements, so that the circuit operation is unstable. As shown in fig. 1, an embodiment of the present application provides a circuit wiring inspection method, including:

101. and acquiring a device database, wherein the device database records the corresponding relation between the device and the circuit rule.

102. Devices in the circuit wiring are determined.

103. And sequentially searching a device database for circuit rules corresponding to the devices in the circuit wiring.

104. And sequentially comparing the connection relation of the devices in the circuit wiring with the circuit rule corresponding to the devices.

105. When the connection modes of the devices in the circuit wiring all satisfy the rule corresponding to the devices, the circuit wiring is considered to pass the inspection.

In the circuit wiring inspection method provided in the above embodiment, a device database in which correspondence between devices and circuit rules is recorded needs to be used, and when a new device appears, the rule corresponding to the new device and the new device needs to be updated to the database so as to satisfy the requirements of the above embodiment. With the continuous development of electronic technology, the speed of new devices and the speed of existing device elimination in the database are increased continuously, so that the updating frequency of the database is increased continuously, and a large amount of manpower and material resources are consumed for updating the database, so that the workload of checking circuit wiring is increased by the circuit wiring checking method provided by the embodiment, and the cost of checking the circuit wiring is increased.

Embodiments of the present application provide a circuit wiring inspection method and apparatus, which can inspect circuit wiring according to a netlist file of the circuit wiring, where the netlist file includes devices in a circuit and signal lines connected to the devices, and determine whether a circuit has a circuit wiring error by analyzing a connection relationship between the devices and the signal lines connected to the devices, thereby reducing workload of circuit wiring inspection and reducing cost of the circuit wiring inspection.

As shown in fig. 2, an embodiment of the present application provides a circuit wiring inspection method, including:

201. and acquiring a netlist file of the circuit wiring.

Specifically, the netlist file includes a device identifier, a signal line identifier and a connection relationship between the signal line devices, the device identifier is used for indicating a type of a device corresponding to the device identifier in circuit wiring, the signal line identifier is used for indicating a type of a signal line corresponding to the signal line identifier in circuit wiring, and the connection relationship between the signal line device and the device corresponding to the signal line identifier in circuit wiring is used for indicating a connection relationship between the signal line corresponding to the signal line identifier and the device corresponding to the device identifier in circuit wiring. The device identifier and the signal line identifier may comply with a preset naming rule, and the type of the device may be obtained by analyzing the device identifier corresponding to the device in the circuit layout in the netlist file according to the preset device identifier naming rule, or the type of the signal line may be obtained by analyzing the signal line identifier corresponding to the signal line in the circuit layout in the netlist file according to the preset signal line identifier naming rule. The signal line device connection relationship is used for indicating the connection relationship of a corresponding signal line in circuit wiring, and the connection relationship comprises devices connected with two ends of the signal line.

Preferably, the types or properties of the devices may include resistive devices and non-resistive devices, wherein the non-resistive devices may also include power supply devices and other devices; the type or property of the signal line may include a signal line connected to a power supply and a general signal line. Preferably, the identifiers of the devices and the signal lines in the circuit layout may be specific to bit numbers of the devices and the signal lines in the circuit layout, or names of the devices and the signal lines in the circuit layout.

It should be noted that the netlist file may analyze the circuit layout diagram to obtain it, or may be input from the outside.

202. The first signal line is determined from the netlist file.

The first signal line is a signal line in the circuit wiring, and the type of the first signal line is a power line.

Specifically, a first signal line is determined according to the netlist file, a signal line can be selected for a circuit, a signal line identifier corresponding to the signal line is obtained according to the netlist file, whether the signal line identifier meets a naming rule of a signal line identifier connected with a power supply or not is judged according to a preset naming rule, and when the signal line identifier meets the naming rule of the signal line identifier connected with the power supply, namely the signal line is a power line, the signal line is determined to be the first signal line; or directly obtaining the type of the signal line according to the signal line identifier, and determining that the signal line is the first signal line when the type of the signal line is the power line.

203. The first device is determined from the netlist file.

The first device is a device in circuit wiring, and one end of the first device is connected with the other end of the first signal line.

Specifically, the first device is determined according to the netlist file, a signal line device connection relationship of the first signal line in the netlist file may be obtained for the first signal line determined in step 202, and a device connected to the first signal line, that is, the first device, may be obtained according to the signal line device connection relationship.

204. And when the type of the first device is determined to be resistance according to the netlist file, determining a second device according to the netlist file.

The second device is a device with one end connected with the other end of the first device through a connecting module, the connecting module comprises K resistors connected in series through signal wires, wherein K is larger than or equal to 0, and the connecting module is respectively connected with the second device and the first device through the signal wires. The connection module may also be a single signal line. One end of the connecting module is connected with the first device, the other end of the connecting module is connected with the other device, and the device is the second device.

When the first device is a resistor, a signal line connected with the first device and other devices connected with the signal line are determined according to the netlist file, and the types of the other devices are further determined, so that a connection module connected with the first device through the signal line is determined.

Specifically, a third signal line with one end connected with the first device can be determined according to the netlist file, a third device connected with the other end of the third signal line is determined according to the netlist file, when the third device is determined to be a resistor according to a device identifier corresponding to the third device in the netlist, a fourth signal line with one end connected with the other end of the third device is determined according to the netlist file, and when the other end of the fourth signal line is determined not to be connected with the power supply according to the netlist file, the third device is determined to belong to the connection module; and further, a fourth device with one end connected with the other end of the fourth signal line is determined according to the netlist file, when the fourth device is determined to be a resistor according to a device identifier corresponding to the fourth device in the netlist, a fifth signal line connected with the other end of the fourth device is determined according to the netlist file, and when the other end of the fifth signal line is determined not to be connected with the power supply according to the netlist file, the fourth device is determined to belong to the connection module.

205. When the second device is a resistor and the other end of the second device is connected to a power supply through a signal line, circuit wiring error information is generated.

Specifically, a second signal line with one end connected to the second device may be determined according to the second device and the netlist file determined in step 204, a signal line identifier corresponding to the second signal line is obtained according to the netlist file, the type of the second signal line is obtained according to the signal line identifier, and when it is determined that the second signal line is a power line, that is, when the other end of the second signal line is connected to the power supply, it is determined that the other end of the second device is connected to the power supply through the signal line. Preferably, a signal line identifier corresponding to the second signal line is obtained according to the netlist file, whether the signal line identifier meets the naming rule of the signal line identifier connected with the power supply is judged, and when the signal line identifier meets the naming rule of the signal line identifier connected with the power supply, the other end of the second device is determined to be connected with the power supply through the signal line.

Optionally, a second signal line with one end connected to the second device may be determined according to the second device and the netlist file determined in step 204, a connection relationship of signal line devices corresponding to the second signal line is obtained according to the netlist file, whether the second signal line is connected to the power supply is determined according to the connection relationship of the signal line devices, and when the second signal line is connected to the power supply, the other end of the second device is determined to be connected to the power supply through the signal line.

Determining that the second device is a resistor, which may be a device identifier corresponding to the second device obtained according to the second device determined in step 204 and the netlist file, and determining that the type of the second device is a resistor according to the device identifier.

When the second device is a resistor and it is determined that the other end of the second device is connected to the power supply through the second signal line, circuit wiring error information is generated.

The circuit wiring error information comprises a device identifier corresponding to the first device, a signal line identifier corresponding to a signal line between the first device and the connection module, and a device identifier corresponding to the second device; or the circuit wiring error information comprises a device identification corresponding to the first device, a device identification corresponding to the second device and a signal line identification corresponding to the second signal line.

According to the circuit wiring inspection method provided by the embodiment of the application, firstly, a netlist file is obtained, the netlist file comprises a device identifier, a signal line identifier and a signal line device connection relation, so that the type of a device in a circuit, the type of a signal line and the connection relation between the signal line and the device are obtained, secondly, a first device is determined according to the netlist file, the first device is connected with a power supply through the signal line in the circuit, and namely the first device is a pull-up resistor; then, determining a second device connected with the first device through a connecting module according to the netlist file, namely connecting the first device with the second device through K resistors connected in series through signal lines, wherein the resistors belonging to the connecting module are not connected with a power supply at two ends, so that the possibility of being used as pull-up resistors does not exist; and judging whether the second device is a resistor and the other end of the second device is connected with a power supply through a signal wire, namely judging whether the second device is also a pull-up resistor, and sending circuit wiring error information when the second device is also the pull-up resistor, so as to warn when repeated design errors of the pull-up resistor exist in the circuit wiring. Therefore, the circuit wiring inspection method provided by the embodiment of the application can inspect the pull-up resistor design in the circuit wiring according to the netlist file of the circuit wiring, so that the workload of circuit wiring inspection is reduced, and the cost of circuit wiring inspection is reduced.

Specifically, as shown in fig. 3, an embodiment of the present application provides a circuit wiring inspection method, including:

301. and acquiring a netlist file of the circuit wiring.

Reference is made in particular to step 201 of the embodiment described above.

Further, the netlist file further includes piece loading information, and the piece loading information is specifically used for identifying whether a device corresponding to the piece loading information is applied to the circuit.

Preferably, the device identifier may be a bit number of the corresponding device, and the signal line identifier may be a network name of the corresponding signal line.

Preferably, the netlist file may be a text file, and the netlist file is a text file specifically referred to as pstxnet.

NET_NAME

'NET_SG_A'

NODE_NAME R1 1

NODE_NAME R2 1

NODE_NAME U1 1

Where "NET _ NAME", "NODE _ NAME" are keywords, and the next row of "NET _ NAME": NET _ SG _ a is a network name of a signal line from which the type of the signal line can be obtained, and specifically indicates that the signal line is a signal line connected to a Power supply when the identification of the signal line starts with "GP", which is abbreviated as Global Power. The identification prohibition of the ordinary signal line starts with "GP", indicating that the ordinary signal line is not connected to the power supply. The position numbers of the devices connected with the signal line NET _ SG _ A, including R1, R2 and U1, are immediately spaced by one space from the NODE _ NAME, the types of the devices can be obtained according to the position numbers of the devices, and when the position numbers begin with R, the device corresponding to the position numbers is represented as a resistor. R is short for Resistance and represents Resistance. Further, the bit numbers of other types of devices prohibit the use of "R" starts, ensuring accuracy in the determination of the device type, where U1 is not a resistor and can be ignored. The pin number of the device connected to the signal line NET _ SG _ a is immediately after a space from the bit number, "NODE _ NAME R21" indicates that the 1 pin of the device R2 is connected to the signal line NET _ SG _ a.

302. Determining a signal wire identifier corresponding to a signal wire in circuit wiring according to the netlist file;

specifically, the signal line is a signal line in circuit wiring, and a signal line identifier corresponding to the signal line is determined according to the netlist file.

303. And when the signal line identification accords with the signal line identification rule of the signal line connected with the power supply, determining the signal line as a first signal line.

The first signal line is a signal line with one end connected with a power supply.

Specifically, the type of the signal line corresponding to the signal line identifier may be determined according to the signal line identifier obtained in step 302, where the type of the signal line includes a signal line connected to a power supply and a common signal line, and the signal line identifier complies with a preset naming rule. Illustratively, a signal line is a signal line connected to a Power supply when its label starts with "GP", where GP is short for Global Power, denoted as Global Power. The identification prohibition of the ordinary signal line starts with "GP", indicating that the ordinary signal line is not connected to the power supply.

304. The first device is determined from the netlist file.

Wherein, the first device is a device of which one end is connected with the other end of the first signal wire.

Reference is made in particular to step 203 of the embodiment described above.

Specifically, the connection relationship of the signal line device corresponding to the first signal line may be obtained according to the netlist file, and the device connected to the other end of the first signal line, that is, the first device, may be determined according to the connection relationship of the signal line device.

305. And determining the piece loading information corresponding to the first device according to the netlist file, and determining that the first device is applied to the circuit according to the piece loading information.

Illustratively, the netlist file is a text file, the text file is specifically pstxnet.dat, the first signal line is a GP3V3 signal line, the first device is R1, when the GP3V3 signal line is detected to be connected with the device R1, the first device is R1, and according to the bit number R1, the related information of R1 is searched in the netlist file pstxprt.dat. The information is as follows:

PART_NAME

R1'RESISTOR_R0603_DISCRETE_33':

HIGH＝'0.41'；

BOM_IGNORE＝'NO'；

PART_NAME

C1'CAPACITOR_C0603_DISCRETE_470PF_':

HIGH＝'0.9'；

BOM_IGNORE＝'NO'；

where "PART _ NAME" is a key, marking the start of a device information record. And R1 is a device bit number, and the related information position of R1 is determined through bit number comparison. And determining that R1 is a load according to the information, wherein the first device is applied to the circuit.

306. When the first device is a resistor, determining a connecting module with one end connected with the other end of the first device through a signal wire according to the netlist file;

specifically, the determining that the first device is a resistor may be implemented by identifying a device identifier, corresponding to the first device, in the netlist file according to a preset naming rule, and obtaining a type of the first device according to the device identifier to determine that the first device is a resistor. Illustratively, when a device identifier begins with "R", it indicates that the device type of the device corresponding to the device identifier is a resistor. R is short for Resistance and represents Resistance. Further, device identifications corresponding to devices of other device types prohibit the use of "R" headers. The accuracy of the determination of the device type is ensured.

The connecting module can comprise K resistors connected in series through signal lines, wherein K is larger than or equal to 0, namely the connecting module can be formed by connecting a plurality of resistors and signal lines in series, and the connecting module can also be a single signal line. The signal line connected with the first device and other devices connected with the signal line can be determined according to the netlist file, the types of the other devices can be further determined, and therefore the connection module connected with the first device through the signal line can be determined.

307. Determining a second signal line according to the netlist file, wherein one end of the second signal line is connected with the other end of the connection module;

a device in the connection module near the other end of the connection module may be obtained according to the connection module obtained in step 306 and the netlist file, and a signal line that is connected to the device and does not belong to the connection module, that is, a second signal line, may be obtained according to the netlist file.

308. And determining a second device connected with the other end of the second signal line according to the netlist file.

And obtaining the connection relation of the corresponding signal line devices of the second signal line according to the netlist file, and determining the second device according to the connection relation of the signal line devices, wherein one end of the second device is connected with the other end of the second signal line.

309. When the second device is a resistor and the other end of the second device is connected to a power supply through a signal line, circuit wiring error information is generated.

For details, reference may be made to step 205 of the above embodiment, which is not described herein again.

The circuit wiring error information may also include a device identifier corresponding to the first device and a signal line identifier corresponding to a signal line between the first device and the connection module.

Illustratively, the signal line identifier corresponding to the second signal line is NET _ SG _ B, the netlist file obtains the device connection relationship of the signal line corresponding to the second signal line, the device identifiers corresponding to the devices connected to the other end of the second signal line are C1 and R3 according to the device connection relationship, wherein according to the device identifier naming rule, the device corresponding to the device identifier at the beginning of "R" is identified as a resistor, so that the second device corresponding to R3 is judged as a resistor, according to the netlist file, the signal line identifier corresponding to the signal line connected to the other end of R3 is obtained as "GP 3V 3", according to the signal line identifier naming rule, the signal line corresponding to the signal line identifier at the beginning of "GP" is identified as being connected to the power supply, so that the signal line connected to the other end of the second device is a signal line connected to the power supply, so that the second device is determined as a resistor and the other end of the second device is connected to the power supply through the signal line, generating circuit wiring error information, specifically warning that the NET _ SG _ B network has 2 or more pull-up resistors R1R3, wherein the device corresponding to the first device is identified as R1.

It should be noted that, since the first device and the second device are mutually repetitive pull-up resistors, the circuit wiring error message may also be specifically "warning that the NET _ SG _ a network has 2 or more pull-up resistors R1R 3"

The circuit wiring inspection method provided by the embodiment of the application comprises the steps of firstly obtaining a netlist file, wherein the netlist file comprises a device identifier, a signal line identifier and a signal line device connection relation, so that the type of a device in a circuit, the type of the signal line and the connection relation between the signal line and the device are obtained, secondly, determining the signal line identifier corresponding to the signal line in circuit wiring according to the netlist file, when the signal line identifier accords with the signal line identifier rule of the signal line connected with a power supply, determining the signal line to be a first signal line, so that the signal line which is possibly connected with a pull-up resistor is obtained, and then determining the first device according to the netlist file, and determining the piece loading information corresponding to the first device according to the netlist file, so that the first device is determined to be applied to the circuit according to the piece loading information; then determining whether the first device is a resistor according to the netlist file, wherein when the first device is a resistor, the first device is a pull-up resistor because the first device is connected with a power supply through a signal line in a circuit; then, determining a connecting module with one end connected with the other end of the first device through a signal wire according to the netlist file, wherein because both ends of the connecting module are not connected with a power supply, the possibility that resistors contained in the connecting module are not used as pull-up resistors does not exist; determining a second signal line according to the netlist file, and determining a second device connected with the other end of the second signal line according to the netlist file, namely connecting the first device and the second device in series through K resistors connected in series through the signal line; and judging whether the second device is a resistor and the other end of the second device is connected with a power supply through a signal wire, namely judging whether the second device is also a pull-up resistor, and sending circuit wiring error information when the second device is also the pull-up resistor, so as to warn when repeated design errors of the pull-up resistor exist in the circuit wiring. Therefore, the circuit wiring inspection method provided by the embodiment of the application can inspect the pull-up resistor design in the circuit wiring according to the netlist file of the circuit wiring, so that the workload of circuit wiring inspection is reduced, and the cost of circuit wiring inspection is reduced.

An embodiment of the present invention as shown in fig. 4 provides a circuit wiring inspection apparatus including:

the obtaining module 401 is configured to obtain a netlist file of circuit wiring, where the netlist file includes a device identifier, a signal line identifier, and a signal line device connection relationship, the device identifier is used to indicate a device type of a device corresponding to the device identifier in the circuit wiring, the signal line identifier is used to indicate a signal line type of a signal line corresponding to the signal line identifier in the circuit wiring, and the signal line device connection relationship is used to indicate a connection relationship between the signal line corresponding to the signal line identifier in the circuit wiring and the device corresponding to the device identifier;

A processing module 402, configured to determine a first signal line according to the netlist file acquired by the acquisition module, where the first signal line is a signal line in circuit wiring and a signal line type of the first signal line is a power line;

The processing module 402 is further configured to determine a first device according to the netlist file acquired by the acquiring module, where the first device is a device in circuit wiring and one end of the first device is connected to the other end of the first signal line;

The processing module 402 is further configured to determine a second device according to the netlist file obtained by the obtaining module when the device type of the first device is determined to be a resistor according to the netlist file obtained by the obtaining module, the second device is a device with one end connected with the other end of the first device through a connection module, the connection module includes K resistors connected in series through signal lines, where K is greater than or equal to 0, and the connection module is respectively connected with the second device and the first device through the signal lines;

And an alarm module 403, configured to generate circuit wiring error information when the processing module determines, according to the netlist file, that the device type of the second device is a resistor and the other end of the second device is connected to a power supply through a signal line.

Specifically, a second signal line with one end connected to the second device may be determined according to the second device and the netlist file determined by the processing module, a signal line identifier corresponding to the second signal line is obtained according to the netlist file, the type of the second signal line is obtained according to the signal line identifier, and when it is determined that the second signal line is a power line, that is, when the other end of the second signal line is connected to the power supply, it is determined that the other end of the second device is connected to the power supply through the signal line. Preferably, a signal line identifier corresponding to the second signal line is obtained according to the netlist file, whether the signal line identifier meets the naming rule of the signal line identifier connected with the power supply is judged, and when the signal line identifier meets the naming rule of the signal line identifier connected with the power supply, the other end of the second device is determined to be connected with the power supply through the signal line.

Optionally, the second signal line with one end connected to the second device may be determined according to the second device and the netlist file determined by the processing module, a connection relationship of signal line devices corresponding to the second signal line is obtained according to the netlist file, whether the second signal line is connected to the power supply is determined according to the connection relationship of the signal line devices, and when the second signal line is connected to the power supply, the other end of the second device is determined to be connected to the power supply through the signal line.

And determining that the second device is a resistor, wherein the device identifier corresponding to the second device can be obtained according to the second device determined by the processing module and the netlist file, and the type of the second device is determined to be the resistor according to the device identifier.

According to the circuit wiring inspection device provided by the embodiment of the application, a netlist file is obtained through an obtaining module, the netlist file comprises a device identifier, a signal line identifier and a signal line device connection relation, so that the type of a device in a circuit, the type of a signal line and the connection relation between the signal line and the device are obtained, then a first device is determined through a processing module according to the netlist file, the first device is connected with a power supply through the signal line in the circuit, and namely the first device is a pull-up resistor; then, a second device connected with the first device through the connecting module is determined through the processing module according to the netlist file, namely the first device is connected with the second device through resistors connected in series through K signal lines, and because both ends of the resistor belonging to the connecting module are not connected with a power supply, the resistor belonging to the connecting module does not have the possibility of being used as a pull-up resistor; whether the second device is a resistor or not is judged through the warning module, the other end of the second device is connected with the power supply through the signal wire, namely whether the second device is also a pull-up resistor or not is judged, and when the second device is also the pull-up resistor, circuit wiring error information is sent, so that warning is given when repeated design errors of the pull-up resistor exist in the circuit wiring. Therefore, the circuit wiring inspection method provided by the embodiment of the application can inspect the pull-up resistance design in the circuit wiring according to the netlist file of the circuit wiring, reduces the workload of circuit wiring inspection, and reduces the cost of circuit wiring inspection

Further, the processing module 402 is specifically configured to:

and determining a signal line identifier corresponding to a signal line in the circuit wiring according to the netlist file, and determining the signal line in the circuit wiring as a first signal line when the signal line identifier conforms to a signal line identifier rule of the signal line connected with the power supply.

Specifically, the signal line is a signal line in the circuit layout, the signal line mark corresponding to the signal line is determined according to the netlist file,

Furthermore, the netlist file further includes piece loading information, where the piece loading information is used to identify whether a device corresponding to the piece loading information is applied to the circuit, and the processing module 402 is further configured to determine the piece loading information corresponding to the first device according to the netlist file, and determine that the first device is applied to the circuit according to the piece loading information.

PART_NAME

R1'RESISTOR_R0603_DISCRETE_33':

HIGH＝'0.41'；

BOM_IGNORE＝'NO'；

PART_NAME

C1'CAPACITOR_C0603DISCRETE_470PF_':

HIGH＝'0.9'；

BOM_IGNORE＝'NO'；

Further, the processing module 402 is specifically configured to:

determining a connecting module with one end connected with the other end of the first device through a signal wire according to the netlist file; determining a second signal line according to the netlist file, wherein one end of the second signal line is connected with the other end of the connection module; and determining a second device connected with the other end of the second signal line according to the netlist file.

The device close to the other end of the connection module in the connection module can be obtained according to the connection module obtained by the processing module and the netlist file, and a signal line which is connected with the device and does not belong to the connection module, namely a second signal line, can be obtained according to the netlist file.

And acquiring the connection relation of the corresponding signal line devices of the second signal line according to the netlist file, and determining the second device according to the connection relation of the signal line devices, wherein one end of the second device is connected with the other end of the second signal line.

Furthermore, the circuit wiring error information comprises a device identifier corresponding to the first device, a signal line identifier corresponding to a signal line between the first device and the connection module, and a device identifier corresponding to the second device; or the circuit wiring error information comprises a device identification corresponding to the first device, a device identification corresponding to the second device and a signal line identification corresponding to the second signal line.

Illustratively, the signal line identifier corresponding to the second signal line is NET _ SG _ B, the netlist file obtains the device connection relationship of the signal line corresponding to the second signal line, the device identifiers corresponding to the devices connected to the other end of the second signal line are C1 and R3 according to the device connection relationship, wherein according to the device identifier naming rule, the device corresponding to the device identifier at the beginning of "R" is identified as a resistor, so that the second device corresponding to R3 is judged as a resistor, according to the netlist file, the signal line identifier corresponding to the signal line connected to the other end of R3 is obtained as "GP 3V 3", according to the signal line identifier naming rule, the signal line corresponding to the signal line identifier at the beginning of "GP" is identified as being connected to the power supply, so that the signal line connected to the other end of the second device is a signal line connected to the power supply, so that the second device is determined as a resistor and the other end of the second device is connected to the power supply through the signal line, a circuit wiring error message is generated, specifically a warning that a NET _ SG _ B network has 2 or more pull-up resistors R1R3, wherein the device corresponding to the first device is identified as R1.

It should be noted that since the first device and the second device are repetitive pull-up resistors, the circuit wiring error message may be specifically "warning that the NET _ SG _ a network has 2 or more pull-up resistors R1R 3".

According to the circuit wiring inspection device provided by the embodiment of the application, a netlist file is obtained through an obtaining module, the netlist file comprises a device identifier, a signal line identifier and a connection relation of the signal line device, so that the type of a device in a circuit, the type of the signal line and the connection relation of the signal line and the device are obtained, the signal line identifier corresponding to the signal line in the circuit wiring is determined through a processing module according to the netlist file, when the signal line identifier accords with a signal line identifier rule of the signal line of a connection power supply, the signal line is determined to be a first signal line, so that the signal line which is possibly connected with a pull-up resistor is obtained, the first device is determined through the processing module according to the netlist file, and piece loading information corresponding to the first device is determined according to the netlist file, so that the first device is determined to be applied to the circuit according to the piece loading information; determining whether the first device is a resistor or not according to the netlist file through the processing module, wherein when the first device is a resistor, the first device is a pull-up resistor because the first device is connected with a power supply through a signal line in a circuit; determining a connecting module with one end connected with the other end of the first device through a signal wire according to the netlist file through a processing module, wherein the two ends of the connecting module are not connected with a power supply, so that the possibility that resistors contained in the connecting module are not used as pull-up resistors does not exist; the second signal line is determined through the processing module according to the netlist file, the second device connected with the other end of the second signal line is determined according to the netlist file, namely the first device and the second device are connected in series through K resistors connected in series through the signal line, whether the second device is a resistor or not is judged through the warning module, whether the second device is a pull-up resistor or not is judged, when the second device is also the pull-up resistor, circuit wiring error information is sent, and therefore warning is given when repeated design errors of the pull-up resistor exist in the circuit wiring. Therefore, the circuit wiring inspection device provided by the embodiment of the application can inspect the pull-up resistor design in the circuit wiring according to the netlist file of the circuit wiring, so that the workload of circuit wiring inspection is reduced, and the cost of the circuit wiring inspection is reduced.

From the above description of the embodiments, it is clear to those skilled in the art that the present invention can be implemented by hardware, firmware, or a combination thereof. When implemented in software, the functions described above may be stored on or transmitted over as one or more instructions or code on a computer-readable medium. Computer-readable media includes both computer storage media and communication media including any medium that facilitates transfer of a computer program from one place to another. A storage media may be any available media that can be accessed by a computer. Taking this as an example but not limiting: the computer-readable medium may include Random Access Memory (RAM), Read Only Memory (ROM), Electrically Erasable Programmable Read Only Memory (EEPROM), Compact Disc Read Only Memory (CD-ROM) or other optical disk storage, magnetic disk storage or other magnetic storage devices, or any other medium which can be used to carry or store desired program code in the form of instructions or data structures and which can be accessed by a computer. Furthermore, the method is simple. Any connection is properly termed a computer-readable medium. For example, if the software is transmitted from a website, server, or other remote source using a coaxial cable, fiber optic cable, twisted pair, Digital Subscriber Line (DSL), or wireless technologies such as infrared, radio, and microwave, then the coaxial cable, fiber optic cable, twisted pair, DSL, or wireless technologies such as infrared, radio, and microwave are included in the definition of computer-readable medium.

From the above description of the embodiments, it will be apparent to those skilled in the art that when the present invention is implemented in software, instructions or codes for performing the above-described method may be stored in or transmitted through a computer-readable medium. Computer-readable media includes both computer storage media and communication media including any medium that facilitates transfer of a computer program from one place to another. A storage media may be any available media that can be accessed by a computer. Taking this as an example but not limiting: computer-readable media can include RAM, ROM, electrically erasable programmable read-only memory (EEPROM), optical disks, magnetic disks, or other magnetic storage devices, or any other medium that can be used to carry or store desired program code in the form of instructions or data structures and that can be accessed by a computer.

The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and all the changes or substitutions should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. A circuit wiring inspection method, comprising:

obtaining a netlist file of the circuit wiring, wherein the netlist file comprises a device identifier, a signal line identifier and a signal line device connection relation, the device identifier is used for indicating the type of a device corresponding to the device identifier in the circuit wiring, the signal line identifier is used for indicating the type of a signal line corresponding to the signal line identifier in the circuit wiring, and the signal line device connection relation is used for indicating the connection relation between the signal line corresponding to the signal line identifier and the device corresponding to the device identifier in the circuit wiring;

determining a first signal line according to the netlist file, wherein the first signal line is a signal line in the circuit wiring and the type of the first signal line is a power line;

determining a first device according to the netlist file, wherein the first device is a device in the circuit wiring, and one end of the first device is connected with the other end of the first signal line;

when the type of the first device is determined to be a resistor according to the netlist file, determining a second device according to the netlist file, wherein the second device is a device with one end connected with the other end of the first device through a connecting module, the connecting module comprises K resistors connected in series through signal lines, K is larger than or equal to 0, and the connecting module is respectively connected with the second device and the first device through the signal lines;

2. The circuit layout inspection method of claim 1, wherein the determining a first signal line from the netlist file comprises:

determining a signal wire identifier corresponding to a signal wire in the circuit wiring according to the netlist file;

and when the signal wire identifier is combined with a signal wire identification rule of a signal wire connected with a power supply, determining that the signal wire in the circuit wiring is a first signal wire.

3. The circuit layout inspection method according to claim 1, wherein the netlist file further includes piece-loading information for identifying whether a device corresponding to the piece-loading information is applied to the circuit;

before obtaining the second device, the method further comprises:

determining the loading information corresponding to the first device according to the netlist file;

and determining that the first device is applied to the circuit according to the device information.

4. The circuit routing inspection method of claim 1, wherein said determining a second device from the netlist file comprises:

determining the connection module with one end connected with the other end of the first device through a signal line according to the netlist file;

determining a second signal line according to the netlist file, wherein one end of the second signal line is connected with the other end of the connection module;

and determining the second device connected with the other end of the second signal wire according to the netlist file.

5. The circuit wiring inspection method according to claim 1, wherein the circuit wiring error information includes a device identifier corresponding to the first device, a signal line identifier corresponding to a signal line between the first device and the connection module, and a device identifier corresponding to the second device;

or the like, or, alternatively,

the circuit wiring error information comprises a device identification corresponding to the first device, a device identification corresponding to the second device and a signal line identification corresponding to the second signal line.

6. A circuit wiring inspection device, characterized by comprising:

an obtaining module, configured to obtain a netlist file of the circuit layout, where the netlist file includes a device identifier, a signal line identifier, and a signal line device connection relationship, the device identifier is used to indicate a device type of a device corresponding to the device identifier in the circuit layout, the signal line identifier is used to indicate a signal line type of a signal line corresponding to the signal line identifier in the circuit layout, and the signal line device connection relationship is used to indicate a connection relationship between the signal line corresponding to the signal line identifier in the circuit layout and the device corresponding to the device identifier;

the processing module is used for determining a first signal line according to the netlist file acquired by the acquiring module, wherein the first signal line is a signal line in the circuit wiring and the type of the signal line of the first signal line is a power line;

the processing module is further used for determining a first device according to the netlist file acquired by the acquiring module, the first device is a device in the circuit wiring, and one end of the first device is connected with the other end of the first signal line;

the processing module is further used for determining a second device according to the netlist file acquired by the acquisition module when the device type of the first device is determined to be a resistor according to the netlist file acquired by the acquisition module, the second device is a device with one end connected with the other end of the first device through a connection module, the connection module comprises K resistors connected in series through signal lines, wherein K is larger than or equal to 0, and the connection module is respectively connected with the second device and the first device through the signal lines;

and the alarm module is used for generating circuit wiring error information when the processing module determines that the device type of the second device is a resistor according to the netlist file and the other end of the second device is connected with a power supply through a signal wire.

7. The circuit wiring inspection device of claim 6, wherein the processing module is specifically configured to:

8. The circuit wiring inspection apparatus of claim 6, wherein the netlist file further includes piece-loading information for identifying whether a device corresponding to the piece-loading information is applied to the circuit;

the processing module is further configured to:

and determining the loading information corresponding to the first device according to the netlist file, and determining that the first device is applied to the circuit according to the loading information.

9. The circuit wiring inspection device of claim 6, wherein the processing module is specifically configured to:

and determining a second device connected with the other end of the second signal line according to the netlist file.

10. The circuit wiring inspection apparatus according to claim 6, wherein the circuit wiring error information includes a device identifier corresponding to the first device, and a signal line identifier corresponding to a signal line between the first device and the connection module, and a device identifier corresponding to the second device;

or the like, or, alternatively,