CN105279110A - Host system identification method by USB (universal serial port) equipment, and USB equipment - Google Patents
Host system identification method by USB (universal serial port) equipment, and USB equipment Download PDFInfo
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- CN105279110A CN105279110A CN201410360697.3A CN201410360697A CN105279110A CN 105279110 A CN105279110 A CN 105279110A CN 201410360697 A CN201410360697 A CN 201410360697A CN 105279110 A CN105279110 A CN 105279110A
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- 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
- G06F13/382—Information transfer, e.g. on bus using universal interface adapter
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Abstract
Embodiments of the invention disclose a host system identification method by USB (universal serial port) equipment. The method comprises the steps that the USB equipment sets the configurable number of descriptors in the equipment into an integer which is greater than or equal to 2, and the USB equipment reports the descriptors of the equipment to a host computer; when the USB equipment does not detect a MODS (Microsoft OS descriptors) request issued by the host computer and a polling request issued according to the configurable number, the USB equipment determines that the current running system on the host computer is a BIOS, wherein the polling request is used for requesting the poling for all the configuration descriptors in the USB equipment. The embodiments of the invention also disclose the USB equipment.
Description
Technical Field
The present invention relates to the field of computers, and in particular, to a method for a USB device to identify a host system and a USB device.
Background
Universal Serial Bus (USB) technology is a serial bus standard for enabling computer hosts and peripheral devices to communicate, and supports hot plug and play functions. At present, almost all computer peripherals, such as keyboard, mouse, joystick, scanner, digital camera, printer, hard disk, optical drive and network card, can be connected to a host computer through a USB interface and used, and USB has become one of the most widely used interface technologies.
Currently, because Windows systems provide microsoft operating system descriptors (MODS) in XP and later versions, when a USB device is inserted into a host running a Windows system, the host issues a MODS request to query for MODS in the USB device, so that the USB device can identify the Windows system based on whether or not the MODS request is received. However, for the identification of other systems, no reasonable solution exists in the prior art.
Therefore, the prior art has the technical problem that the USB device can only identify the Windows system.
Disclosure of Invention
In view of this, embodiments of the present invention are expected to provide a method for a USB device to identify a host system and a USB device, so as to implement identification of a BIOS by the USB device, further compatible with the host BIOS, and improve the reliability of operation of the USB device.
In order to achieve the purpose, the technical scheme of the invention is realized as follows:
in one aspect, an embodiment of the present invention provides a method for a USB device to identify a host system, where the method includes: the USB equipment sets the configurable number in the equipment descriptor of the USB equipment to an integer greater than or equal to 2, and reports the equipment descriptor to a host; and when the USB equipment does not detect the MODS request issued by the host and the polling request issued according to the configurable number, determining that the BIOS currently runs on the host, wherein the polling request is used for requesting to poll all the configuration descriptors in the USB equipment.
Optionally, the reporting, by the USB device, the device descriptor to the host includes: the USB equipment receives an equipment descriptor request sent by the host; and the USB equipment executes the equipment descriptor request and reports the equipment descriptor.
Optionally, after the USB device reports the device descriptor to the host, the method further includes: and when the USB equipment detects the MODS request, determining that the currently running Windows system on the host computer is operated.
Optionally, after the USB device reports the device descriptor to the host, the method further includes: and when the USB equipment does not detect the MODS request and detects the polling request, determining that a Linux/Mac system is currently operated on the host.
Optionally, the device descriptor is device descriptor information of a mass storage device.
In another aspect, an embodiment of the present invention provides a USB device, where the USB device includes: the device comprises a configuration unit, a reporting unit and an identification unit; the configuration unit is configured to set a configurable number in a device descriptor of the USB device to an integer greater than or equal to 2; the reporting unit is configured to report the device descriptor to the host; the identification unit is configured to determine that the BIOS currently runs on the host when the MODS request issued by the host according to the device descriptor and the polling request issued according to the configurable number are not detected, where the polling request is used to request polling of all configuration descriptors in the USB device.
Optionally, the reporting unit is specifically configured to receive an equipment descriptor request sent by the host; and executing the device descriptor request and reporting the device descriptor.
Optionally, the identifying unit is further configured to determine that a Windows system is currently running on the host when the MODS request is detected after the reporting unit reports the device descriptor to the host.
Optionally, the identifying unit is further configured to determine that a Linux/Mac system is currently running on the host when the MODS request is not detected and the polling request is detected after the reporting unit reports the device descriptor to the host.
Optionally, the device descriptor is device descriptor information of a mass storage device.
In the method for identifying a host system by using a USB device and the USB device provided in the embodiments of the present invention, the USB device sets a configurable number in a device descriptor to an integer greater than or equal to 2, and reports the device descriptor to a host; after the host receives the device descriptor, if the Windows system is currently running on the host, the host sends the MODS to the USB device; if the current running on the host machine is the Linux/Mac system, the host machine considers that the USB equipment is the multi-configuration equipment after acquiring the configurable number, and sends a polling request to the USB equipment to request to poll all configuration descriptors in the USB equipment; if the BIOS is currently running on the host, the host does not send the two requests to the USB device, so the USB device can identify the host system according to whether the two requests are received or not. Then, when the USB device does not detect the MODS request and the polling request issued by the host, it can be determined that the BIOS is currently running on the host. Therefore, the technical problem that the USB equipment can only identify the Windows system in the prior art is solved, and the identification of the BIOS of the host by the USB equipment is realized; furthermore, since the USB device can recognize that the current running BIOS on the host is, when the drive mode is selected, the USB device selects the drive model corresponding to the BIOS to be compatible with the host BIOS, thereby improving the running reliability of the USB device.
Drawings
FIG. 1 is a schematic structural diagram of a USB communication system according to an embodiment of the present invention;
fig. 2 is a flowchart illustrating a method for identifying a host system by a USB device on a USB communication system side according to an embodiment of the present invention;
FIG. 3 is a flowchart illustrating a method for identifying a Windows system by a USB device on the side of a USB communication system according to an embodiment of the present invention;
FIG. 4 is a flowchart illustrating a method for identifying a Linux/Mac system by a USB device on the side of a USB communication system according to an embodiment of the present invention;
fig. 5 is a flowchart illustrating a method for identifying a BIOS by a USB device on a USB communication system side according to an embodiment of the present invention;
FIG. 6 is a flowchart illustrating a method of a USB device for identifying a host system according to an embodiment of the present invention;
fig. 7 is a schematic structural diagram of a USB device in an embodiment of the present invention.
Detailed Description
The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.
An embodiment of the present invention provides a USB communication system, and fig. 1 is a schematic structural diagram of the USB communication system in the embodiment of the present invention, and referring to fig. 1, the USB communication system includes: a host 11 and a USB device 12;
the host 11 may run one or more systems, such as a Windows system, a BIOS, a Linux system, or a Mac system; USB device 12 may be a USB network card, a USB data card, or the like.
It should be noted that all versions of the above-mentioned system belong to the protection scope of the present invention, and the present invention is not particularly limited.
With reference to the embodiment of the present invention, in the above communication system, the host 11 is configured to perform data transmission with the USB device 12;
the USB device 12 is used for setting the configurable number in the device descriptor of the USB device to be an integer greater than or equal to 2 and reporting the device descriptor to the host 11; when the MODS request issued by the host 11 and the polling request issued according to the configurable number are not detected, it is determined that the BIOS is currently running on the host 11, where the polling request is used to request polling of all configuration descriptors in the USB device 12.
The following describes a method for identifying a host system by a USB device in an embodiment of the present invention with reference to the above communication system.
Fig. 2 is a flowchart illustrating a method for identifying a host system by a USB device on a USB communication system side according to an embodiment of the present invention.
Referring to fig. 2, the method includes:
s201: the USB equipment is inserted into a host, enters a power-on state and starts enumeration;
s202: the host computer detects that a new USB device is inserted, and performs enumeration interaction with the USB device; if the running of the host computer is a Windows system, jumping to 203; if the host computer runs a non-Windows system, jumping to S204;
specifically, after the host detects that a new USB device is inserted, first, the USB hub on the host reports an event to the host using an interrupt channel;
secondly, the host sends a request (Get _ Port _ Status) for obtaining the Port state to the hub so as to obtain more equipment information;
thirdly, the hub detects whether the USB equipment runs at a low speed or at a high speed and sends the information to the host, wherein the information is a response to the Get _ Port _ Status;
fourthly, the host sends a request (Set _ Port _ Feature) for setting the Port state to the hub, and requires the Port to be reset;
fifthly, resetting the USB equipment by the concentrator;
sixthly, the host detects whether the connected full-speed USB equipment supports high-speed operation;
seventhly, establishing a data transmission channel between the host and the USB equipment;
eighthly, the host acquires the maximum packet length of the default pipeline;
and ninthly, the host allocates an address for the USB device.
The above processes are interactions among the host, the hub and the USB device in the enumeration process.
S203: the host computer issues an MODS request to the USB equipment to request the USB equipment to report the MODS therein; jumping to 204;
s204: the USB device sets the configurable number in the device descriptor of the USB device to be an integer greater than or equal to 2;
in a specific implementation, the USB device may generate a set of device descriptors, and then set the configurable number in the device descriptors to an integer greater than or equal to 2, so that the host may consider the USB device to have multiple sets of configuration descriptors when analyzing the device descriptors.
Preferably, the device descriptor is device descriptor information of the mass storage device.
S205: the host issues a Device Descriptor request (Get _ Device _ Descriptor);
s206: the USB equipment executes the equipment descriptor request and reports the equipment descriptor;
in practical applications, after S203, the USB device may also autonomously report the device descriptor.
S207: the host analyzes the device descriptor; if the Linux/Mac system is currently running on the host computer, jumping to S208 a; if the BIOS or Windows system is currently running on the host, go to S208 b;
s208 a: the host sends a polling request to the USB equipment to request to poll all the configuration descriptors on the USB equipment; jumping to S209;
specifically, the Linux/Mac system supports multi-configuration USB devices, and when the number of configurations in the device descriptor read by the host is greater than or equal to 2, the USB device is considered to have multiple sets of configuration descriptors, and then a polling request is issued thereto to request polling of each set of configuration descriptors in the USB device, so as to fully know the configuration information of the USB device.
Of course, the host may also issue a configuration Descriptor request (Get _ Descriptor) multiple times to request each set of configuration descriptors.
S208 b: the host sends a configuration Descriptor request (Get _ Descriptor) to the USB device; jumping to S209;
specifically, since the BIOS or Windows system does not support multiple configurations of USB devices, when the host reads the device descriptors, regardless of the configurable number, the host issues a configuration descriptor request to request a first set of configuration descriptors for the USB device.
S209: the USB equipment detects whether an MODS request and a polling request exist;
s210 a: if the MODS request does not exist but the polling request exists, the USB device determines that the Linux/Mac system is currently running on the host.
S210 b: if there is a MODS request but there is no polling request, the USB device determines that the Windows system is currently running on the host.
S210 c: if neither the MODS request nor the polling request exists, the USB device determines that the BIOS currently runs on the host.
The solution described in one or more of the above embodiments is described below for different systems.
The first embodiment is as follows:
suppose that the currently running Windows system is on the host.
Fig. 3 is a schematic flow chart of a method for identifying a Windows system by a USB device on a USB communication system side in an embodiment of the present invention, and referring to fig. 3, the method includes:
s301: the USB equipment is inserted into a host, enters a power-on state and starts enumeration;
s302: the host detects that a new USB device is inserted, performs enumeration interaction with the USB device, and issues an MODS request;
s303: the USB equipment sets the configurable number in the equipment descriptor to be an integer greater than or equal to 2;
s304: the host issues a Device Descriptor request (Get _ Device _ Descriptor);
s305: the USB equipment executes the equipment descriptor request and reports the equipment descriptor;
s306: the host computer analyzes the device Descriptor and issues a configuration Descriptor request (Get _ Descriptor);
s307: the USB equipment receives a configuration descriptor request and detects whether an MODS request and a polling request exist or not;
s308: and when the USB equipment only detects the MODS request issued by the host, determining that the Windows system is currently running on the host.
Example two:
it is assumed that the Linux/Mac system is currently running on the host.
Fig. 4 is a flowchart illustrating a method for USB device to identify a Linux/Mac system on a USB communication system side in an embodiment of the present invention, and referring to fig. 4, the method includes:
s401: the USB equipment is inserted into a host, enters a power-on state and starts enumeration;
s402: the host computer detects that a new USB device is inserted, and performs enumeration interaction with the USB device;
s403: the USB equipment sets the configurable number in the equipment descriptor to be an integer greater than or equal to 2;
s404: the host issues a Device Descriptor request (Get _ Device _ Descriptor);
s405: the USB equipment executes the equipment descriptor request and reports the equipment descriptor;
s406: the host analyzes the device Descriptor and issues a polling request (Get _ Descriptor);
s407: the USB equipment receives a configuration descriptor request and detects whether an MODS request and a polling request exist or not;
s408: and when the USB equipment only detects the polling request issued by the host, determining that the Linux/Mac system is currently running on the host.
Example three:
assume that the BIOS is currently running on the host.
Fig. 5 is a flowchart illustrating a method for identifying a BIOS by a USB device on a USB communication system side in an embodiment of the present invention, referring to fig. 5, where the method includes:
s501: the USB equipment is inserted into a host, enters a power-on state and starts enumeration;
s502: the host computer detects that a new USB device is inserted, and performs enumeration interaction with the USB device;
s503: the USB equipment sets the configurable number in the equipment descriptor to be an integer greater than or equal to 2;
s504: the host issues a Device Descriptor request (Get _ Device _ Descriptor);
s505: the USB equipment executes the equipment descriptor request and reports the equipment descriptor;
s506: the host computer analyzes the device Descriptor and issues a configuration Descriptor request (Get _ Descriptor);
s507: the USB equipment receives a configuration descriptor request and detects whether an MODS request and a polling request exist or not;
s508: when the USB equipment does not detect the MODS request and the polling request issued by the host, the BIOS is determined to be currently running on the host.
At this point, the USB device has completed identifying the host system.
Further, the USB device selects the most appropriate configuration descriptor to the host according to the identified host system, mounts the driver matched with the host system, and completes enumeration.
By the method, the USB equipment identifies each system according to different responses of different systems to the multi-configuration equipment, so that not only can different common desktop systems be identified, but also the BIOS can be identified, and the identification of the USB equipment to the BIOS of the host computer is realized; furthermore, since the USB device can recognize that the current running BIOS on the host is, when the drive mode is selected, the USB device selects the drive model corresponding to the BIOS, and is compatible with the host BIOS, thereby improving the running reliability of the USB device.
Based on the same inventive concept, an embodiment of the present invention provides a method for a USB device to identify a host system, where the method is applied to the USB device described in one or more embodiments above.
Fig. 6 is a flowchart illustrating a method for a USB device to identify a host system according to an embodiment of the present invention, and referring to fig. 6, the method includes:
s601: the USB equipment sets the configurable number in the equipment descriptor to an integer greater than or equal to 2, and reports the equipment descriptor to the host;
in a specific implementation process, S601 may be: the USB equipment receives an equipment descriptor request sent by a host; and the USB equipment executes the equipment descriptor request and reports the equipment descriptor.
Preferably, the device descriptor is device descriptor information of the mass storage device.
S602: when the USB equipment does not detect the MODS request issued by the host and the polling request issued according to the configurable number, determining that the BIOS currently running on the host is the BIOS; wherein the polling request is used for requesting to poll all the configuration descriptors in the USB device.
Optionally, after S601, the method further includes: when the USB device detects the MODS request, the USB device determines that the Windows system is currently running on the host.
Optionally, after S601, the method further includes: when the USB device does not detect the MODS request and detects the polling request, the USB device determines that the Linux/Mac system is currently running on the host.
Based on the same inventive concept, embodiments of the present invention provide a USB device, which is the same as the USB device described in one or more embodiments above.
Fig. 7 is a schematic structural diagram of a USB device according to an embodiment of the present invention, and referring to fig. 7, the USB device includes: a configuration unit 71, a reporting unit 72 and an identification unit 73; wherein, the configuration unit 71 is configured to set the configurable number in the device descriptor to an integer greater than or equal to 2; a reporting unit 72, configured to report the device descriptor to the host; the identifying unit 73 is configured to determine that the BIOS currently runs on the host when the MODS request issued by the host according to the device descriptor and the polling request issued according to the configurable number are not detected, where the polling request is used to request polling of all configuration descriptors in the USB device.
Optionally, the reporting unit 72 is specifically configured to receive an apparatus descriptor request sent by the host; and executing the device descriptor request and reporting the device descriptor.
Optionally, the identifying unit 73 is further configured to determine that the Windows system is currently running on the host when the MODS request is detected after the reporting unit 72 reports the device descriptor to the host.
Optionally, the identifying unit 73 is further configured to determine that the Linux/Mac system is currently running on the host when the MODS request is not detected and the polling request is detected after the reporting unit 72 reports the device descriptor to the host.
Optionally, the device descriptor in one or more embodiments described above is device descriptor information of a mass storage device.
The configuration unit 71, the reporting unit 72, and the identification unit 73 in one or more embodiments above may be disposed in a control chip in the USB device.
As will be appreciated by one skilled in the art, embodiments of the present invention may be provided as a method, system, or computer program product. Accordingly, the present invention may take the form of a hardware embodiment, a software embodiment, or an embodiment combining software and hardware aspects. Furthermore, the present invention may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, optical storage, and the like) having computer-usable program code embodied therein.
The present invention is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the invention. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention.
Claims (10)
1. A method for a USB device to identify a host system, the method comprising:
the USB equipment sets the configurable number in the equipment descriptor of the USB equipment to an integer greater than or equal to 2, and reports the equipment descriptor to a host;
and when the USB equipment does not detect the MODS request issued by the host and the polling request issued according to the configurable number, determining that the BIOS currently runs on the host, wherein the polling request is used for requesting to poll all the configuration descriptors in the USB equipment.
2. The method of claim 1, wherein reporting, by the USB device, the device descriptor to the host comprises:
the USB equipment receives an equipment descriptor request sent by the host;
and the USB equipment executes the equipment descriptor request and reports the equipment descriptor.
3. The method of claim 1, wherein after the USB device reports the device descriptor to the host, the method further comprises:
and when the USB equipment detects the MODS request, determining that the currently running Windows system on the host computer is operated.
4. The method of claim 1, wherein after the USB device reports the device descriptor to the host, the method further comprises:
and when the USB equipment does not detect the MODS request and detects the polling request, determining that a Linux/Mac system is currently operated on the host.
5. The method according to any of claims 1 to 4, wherein the device descriptor is device descriptor information of a mass storage device.
6. A USB device, the USB device comprising: the device comprises a configuration unit, a reporting unit and an identification unit; wherein,
the configuration unit is used for setting the configurable number in the device descriptor of the USB device to be an integer greater than or equal to 2;
the reporting unit is configured to report the device descriptor to the host;
the identification unit is configured to determine that the BIOS currently runs on the host when the MODS request issued by the host according to the device descriptor and the polling request issued according to the configurable number are not detected, where the polling request is used to request polling of all configuration descriptors in the USB device.
7. The USB device according to claim 6, wherein the reporting unit is specifically configured to receive a device descriptor request sent by the host; and executing the device descriptor request and reporting the device descriptor.
8. The USB device of claim 6, wherein the identifying unit is further configured to determine that a Windows system is currently running on the host when the MODS request is detected after the reporting unit reports the device descriptor to the host.
9. The USB device according to claim 6, wherein the identifying unit is further configured to determine that the Linux/Mac system is currently running on the host when the MODS request is not detected and the polling request is detected after the reporting unit reports the device descriptor to the host.
10. The USB device according to any of claims 6 to 9, wherein the device descriptor is device descriptor information of a mass storage device.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410360697.3A CN105279110B (en) | 2014-07-25 | 2014-07-25 | A kind of method and USB device of USB device identification host system |
| PCT/CN2014/091644 WO2015117460A1 (en) | 2014-07-25 | 2014-11-19 | Method for usb device to recognize host system, usb device and storage medium |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410360697.3A CN105279110B (en) | 2014-07-25 | 2014-07-25 | A kind of method and USB device of USB device identification host system |
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| CN105279110A true CN105279110A (en) | 2016-01-27 |
| CN105279110B CN105279110B (en) | 2018-07-27 |
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| WO (1) | WO2015117460A1 (en) |
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| CN114503529A (en) * | 2019-10-07 | 2022-05-13 | 辛纳普蒂克斯公司 | Backwards compatibility of audio systems and methods |
| CN114503529B (en) * | 2019-10-07 | 2023-09-01 | 辛纳普蒂克斯公司 | Backwards compatibility of audio systems and methods |
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| Publication number | Publication date |
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| CN105279110B (en) | 2018-07-27 |
| WO2015117460A1 (en) | 2015-08-13 |
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