CN1553334A - System and method for detecting transmission rate of USB interface of host - Google Patents

Abstract

A system and method for detecting transmission rate of USB interface of host computer, directly utilize storage area in USB2.0 chip to test transmission rate of USB host computer through firmware program, the system includes computer host computer composed of USB controller and drive module, peripheral equipment controller chip composed of storage module and firmware processing module, and connecting circuit, first start USB drive program, then download the firmware program in USB drive program to the peripheral equipment controller chip, then confirm the type of USB controller, next, according to USB controller type transmission data, confirm transmission time, finally confirm the transmission rate of USB controller according to data transmission quantity and transmission time.

Description

System and method for detecting transmission rate of host USB interface

technical field

The invention relates to a system and method for detecting the transmission rate of a host USB interface, in particular to a system and a method for testing the transmission rate of a USB host directly by using a storage area in a USB2.0 chip through a firmware program.

Background technique

Data storage device is an important part of computer equipment. In various practical applications, users need to store more and more data. USB storage device has the characteristics of convenient, large capacity and high speed data storage. For example, the USB interface The hard disk has a maximum transfer rate of 12Mbps based on USB1.0, and up to 480Mbps based on USB2.0. It has large capacity, small size, and supports hot swapping, so it has been widely used.

Just because of the wide application of USB storage devices, it is particularly important to detect the transmission rate of the USB interface on the host computer, which is an important guarantee for the normal operation of the USB device. The traditional detection method is to use external storage devices such as hard disks to store the detection data. However, when performing large-scale USB transmission rate detection, a large number of hard disks or other external storage devices are required. Due to the high cost of hard disks and the Long-term reading and writing of the hard disk may damage it, which will virtually increase the cost of testing.

At this time, a low-cost system and method for detecting the transmission rate of the host USB interface is needed to solve the above problems.

Contents of the invention

In view of this, in order to solve the above problems, the present invention proposes a system and method for detecting the transmission rate of the USB interface of the host, which directly uses the storage area in the USB2.0 chip to test the transmission rate of the USB host through the firmware program.

The present invention proposes a method for detecting the transmission rate of a host USB interface, the method comprising the following steps: first start the USB driver; then download the firmware program in the USB driver to the peripheral device controller chip; then determine the USB control The type of device; Next, according to the type of USB controller to transfer data, determine the transfer time; finally determine the transfer rate of the USB controller according to the amount of data transfer and the transfer time.

The present invention proposes a system for detecting the USB interface of a host computer. The system includes: a computer host computer composed of a USB controller and a drive module, wherein the USB controller is used to provide a USB interface for performing detection, and the drive module is used to generate and provide a detection interface. The firmware program is a peripheral device controller chip composed of a storage module and a firmware processing module, wherein the storage module is used to store a firmware program that provides detection, the firmware processing module is used to execute the firmware program, and is used to provide the computer host The connection circuit with the peripheral device controller chip.

Compared with the existing methods, the system and method for detecting the transmission rate of the USB interface of the host computer provided by the present invention directly utilize the storage area in the USB2.0 chip to test the transmission rate of the USB host computer, and the required test peripherals are only The USB2.0 chip and its standard circuit components are not the hard disk in the prior art, thereby greatly reducing the test cost and effectively avoiding the waste of resources.

Description of drawings

Fig. 1 is the overall flowchart of the method for detecting host USB interface transfer rate of the present invention;

Fig. 2 is the flow chart of starting USB driver proposed by the present invention;

Fig. 3 is the flow chart of downloading the firmware program in this USB driver program in the peripheral device controller chip proposed by the present invention;

Fig. 4 is the flow chart that realizes the control of peripheral equipment controller chip that the present invention proposes;

Fig. 5 is a flow chart of performing corresponding operations according to the situation of the received chip setting data packet proposed by the present invention;

FIG. 6 is a flow chart of performing corresponding operations according to the situation of the received chip setting data packet proposed by the present invention;

FIG. 7 is a flow chart of controlling the peripheral device controller chip according to the type of the USB controller proposed by the present invention; and

FIG. 8 is a block diagram of a system for detecting the transmission rate of a host USB interface proposed by the present invention.

Wherein, the reference signs are explained as follows:

Step 110 Start the USB driver

Step 120 Download the firmware program in the USB driver to the peripheral device controller chip

Step 130 Determine the type of USB controller

Step 140: According to the USB controller type to transmit data, determine the transmission time

Step 150 Determine the transfer rate of the USB controller according to the amount of data transfer and the transfer time

Step 210 Read the peripheral device controller chip information

Step 220 determines that there is no firmware program in the peripheral device controller chip

Step 310 Restart the peripheral device controller chip after the firmware program is downloaded

Step 320 Execute the firmware program in the peripheral device controller chip

Step 330 Re-read the peripheral device controller chip information to determine the firmware program in the peripheral device controller chip

Step 340 Control the peripheral device controller chip according to the USB controller type

Step 410 Execute firmware program initialization

Step 420 Start receiving the interrupt signal of the peripheral device controller chip

Step 430 Perform corresponding operations according to the received chip setting data packet

Step 440 Execute corresponding operations according to the chip setting data packet received again

Step 510 is to perform corresponding operations according to the content of the data packet when the data packet is received

Step 520 When the data packet is not received, continue to prepare to receive the data packet after a delay of 1 second

Step 610 When the data packet is received again, execute the device interrupt request therein

Step 620 When the packet is not received again, determine the setting of the USB bus idle flag and delay processing

Step 630 Execute related operations according to the setting

Step 710 When the USB bus idle flag and delay processing are all set, delay the processing of the packet

Step 720 When the USB bus idle sign is not set, then set this sign

Step 730 When the delay processing is not set, then set the delay processing

810 computer host

811 USB controller

812 drive module

820 peripheral device controller chip

821 storage module

822 firmware processing module

830 connecting circuit

Detailed ways

The present invention is described in detail below in conjunction with accompanying drawing:

Illustrate by Fig. 1, this figure is the overall flow chart of the method for detecting host computer USB interface transfer rate of the present invention, explain as follows:

First start the USB driver (step 110); then download the firmware program in the USB driver to the peripheral device controller chip (step 120); then determine the type of the USB controller (step 130); next, according to the The USB controller type transmits data, and determines the transmission time (step 140); finally determines the transmission rate of the USB controller according to the data transmission amount and the transmission time (step 150).

The USB driver (USB Driver) can be a USB driver under Windows or Linux, depending on the type of operating system. Among them, the USB Driver under the Windows operating system can be modified on the basis of the code provided by the development kit provided by Cypress, so as to obtain the USB Driver required for detection; the USB Driver under the Linux operating system has no software program that can be used directly. The invention is to obtain the firmware program required for detection by modifying the dabusb driver included in the Linux operating system.

The existing USB standards include USB1.0 and USB2.0, which correspond to different USB controllers respectively.

By executing the firmware program in the peripheral device controller chip (such as Cypress's EZ-USB FX2 chip), the USB Driver can control the peripheral device controller chip to read data, and thus obtain the amount of transmitted data and the transmission time. The transfer rate of the USB controller can be detected by comparing the amount of transferred data/transfer time.

Next, the flow of the present invention will be further described.

See also Fig. 2, this figure is the flow chart of starting the USB driver that the present invention proposes, and description is as follows:

First read the peripheral device controller chip information (step 210); then determine that there is no firmware program in the peripheral device controller chip (step 220).

This peripheral equipment controller chip can be USB2.0FX2 chip, common chip all contains firmware program, and firmware program is burnt in the read-only memory (ROM) in this chip, but the USB2.0 used in the present invention There is no ROM in the chip.

Please refer to Fig. 3, this figure is the flow chart that downloads the firmware program in this USB driver program in the peripheral equipment controller chip that the present invention proposes, and description is as follows:

Restart this peripheral device controller chip (step 310) after firmware program download finishes; Carry out this firmware program (step 320) in this peripheral device controller chip; Read this peripheral device controller chip information again, determine peripheral device A firmware program in the controller chip (step 330); control the peripheral device controller chip according to the type of the USB controller (step 340).

Because there is no ROM in the used USB2.0 chip of the present invention, does not contain firmware program, so just can make full use of the characteristic of USB2.0 chip, the firmware program in the USB Driver is directly written in the storage area in FX2, then according to The USB controller type controls the storage area in the FX2 to perform detection through the firmware program.

Please refer to Fig. 4, this figure is the flow chart that the present invention proposes according to this USB controller type this peripheral equipment controller chip is controlled, and description is as follows:

Execute firmware program initialization (step 410); Begin to receive the interrupt signal of this peripheral device controller chip (step 420); According to the chip setting data packet situation that receives, carry out corresponding operation (step 430); According to the chip setting data that receives again The package case performs the corresponding operation (step 440).

The firmware program actually controls the storage area in FX2 in the USB2.0 chip, because in different types of USB controllers, the endpoints of the FIFO (First In Fist Out) are different, during the initialization process of the firmware program , it is necessary to perform space allocation and related buffer settings according to the characteristics of each FIFO endpoint, so as to realize the control of the peripheral device controller chip and perform detection.

Please refer to Fig. 5, which is a flow chart of performing corresponding operations according to the situation of the received chip setting data packet proposed by the present invention, as follows:

When the data packet is received, perform corresponding operations according to the content of the data packet (step 510); when the data packet is not received, continue to prepare to receive the data packet after a delay of 1 second (step 520).

The content in the data packet includes: device interrupt request, USB bus idle flag and delay processing settings and other related information, which is an important basis for the chip to perform operations.

Please refer to Fig. 6, which is a flow chart of performing corresponding operations according to the situation of the chip setting data packet received again proposed by the present invention, as follows:

When receiving this data packet again, carry out wherein device interrupt request (step 610); When not receiving this data packet again, determine the setting situation (step 620) of USB bus idle mark and delay processing; According to this setting situation The associated operations are performed (step 630).

Please refer to Fig. 7, which is a flow chart of performing relevant operations according to the setting situation proposed by the present invention, and the description is as follows:

When the USB bus idle sign and the delay processing are all set, delay the processing (step 710) of the packet; when the USB bus idle sign is not set, then set the sign (step 720); If set, delay processing is set (step 730).

Please refer to FIG. 8 , which is a block diagram of the system for detecting the transmission rate of the host USB interface proposed by the present invention. The peripheral device controller chip 820 composed of the module 821 and the firmware processing module 822 is used to provide a connection circuit 830 between the host computer and the peripheral device controller chip.

Wherein, the peripheral device controller chip is a USB2.0 chip peripheral device controller chip, the USB controller 811 is used to provide a USB interface for performing detection, the driver module 812 is used to generate a firmware program that provides detection, and the storage module 821 It is the storage area in FX2 of the USB2.0 chip, used for storing the firmware program for providing detection, and the firmware processing module 822 is used for executing the firmware program.

The following describes the use of two preferred USB Driver examples.

The USB Driver under the Windows operating system is modified on the basis of the code provided by the development kit provided by Cypress to obtain the USB Driver required for detection. The steps are as follows:

(1) The Hex2C software of the application development kit converts the firmware program *.hex into the c language code *.c;

(2) Add *.c to the download array;

(3) Add the function of judging the peripheral equipment information before the code of the download firmware program, so as to decide whether to download the firmware program or control the peripheral equipment;

(4) Use Windows DDK build program to get *.sys USB driver; and

(5) Copy the *.sys and corresponding *.inf files to the Windows system directory.

After the program is generated, by executing the USB Driver, the firmware program can be downloaded to the storage area in the FX2 of the USB2.0 chip, and the detection process can be completed by executing it in the USB2.0 chip.

There is no USB Driver program that can be used directly under the Linux operating system. The present invention obtains the required driver for detection by modifying the dabusb driver carried in the Linux operating system. The steps are as follows:

(1) The Hex2C software of the application development kit converts the firmware program *.hex into the c language code *.c;

(2) Add *.c to the download array;

(3) Add the function of judging the peripheral equipment information before the code of the download firmware program, so as to decide whether to download the firmware program or control the peripheral equipment;

(4) Add the product id and vendorid of our peripheral equipment in the dabusb code of linux;

(5) Modify the fpga and interface parts in the probe function;

(6) Modify the error reporting conditions of the open function to cooperate with our peripheral equipment;

(7) Modify the endpoint settings for bulk transmission, and use copy_from_user and copy_to_user to exchange data between the driver and the application;

(8) Compile with gcc to obtain dabusb.o; and

(9) Application script control realizes loading driver.

After the program is generated, by executing the USB Driver, the firmware program can be downloaded to the storage area in the FX2 of the USB2.0 chip, and the detection process can be completed by executing it in the USB2.0 chip.

The above are only preferred embodiments of the present invention, and are not used to limit the scope of the present invention; that is, all equivalent changes and improvements made according to the content of the present invention should belong to the patent scope of the present invention.

Claims (13)

1, a kind of method that detects main frame USB interface transfer rate is characterized in that, described method may further comprise the steps at least:

Start the USB driver;

Firmware program in the described USB driver is downloaded in the peripheral controls chip;

Determine the type of USB controller;

According to described USB controller type transmission data, determine the transmission time; And

Determine the transfer rate of described USB controller according to volume of transmitted data and described transmission time.

2, the method for detection main frame USB interface transfer rate as claimed in claim 1 is characterized in that, the step that starts the USB driver is further comprising the steps of:

Read described peripheral controls chip information; And

Determining does not have firmware program in the described peripheral controls chip.

3, the system of detection main frame USB interface transfer rate as claimed in claim 1 is characterized in that, described peripheral controls chip is the USB2.0 chip.

4, the method for detection main frame USB interface transfer rate as claimed in claim 1 is characterized in that, the step that the firmware program in the described USB driver downloads in the peripheral controls chip is further comprising the steps of:

Firmware program restarts described peripheral controls chip after downloading and finishing;

In described peripheral controls chip, carry out described firmware program;

Again read the peripheral controls chip information, determine the firmware program in the described peripheral controls chip; And

According to described USB controller type described peripheral controls chip is controlled.

5, the method for detection main frame USB interface transfer rate as claimed in claim 4 is characterized in that, and is further comprising the steps of according to the step that described USB controller type is controlled described peripheral controls chip:

Carry out the firmware program initialization;

Begin to receive the look-at-me of described peripheral controls chip;

According to the chip that receives the packet situation is set and carries out corresponding operating;

According to the chip that receives once more the packet situation is set and carries out corresponding operating.

6, the method for detection main frame USB interface transfer rate as claimed in claim 5 is characterized in that, the execution firmware program is initialized as the buffer zone end points according to the USB controller, and allocation space is also carried out the correlation buffer setting.

7, the method for detection main frame USB interface transfer rate as claimed in claim 5 is characterized in that, according to the chip that receives the packet situation is set and carries out corresponding operating for when receiving described packet, carries out corresponding operating according to the content of described packet.

8, the method for detection main frame USB interface transfer rate as claimed in claim 5, it is characterized in that, according to the chip that receives the packet situation is set and carries out corresponding operating, postpones to continue after the kind to prepare in 1 second the described packet of reception for when not receiving described packet.

9, the method for detection main frame USB interface transfer rate as claimed in claim 5 is characterized in that, according to the chip that receives once more the packet situation is set and carries out corresponding operating for when receiving described packet once more, carries out device interrupt request wherein.

10, the method for detection main frame USB interface transfer rate as claimed in claim 5 is characterized in that, according to the chip that receives once more packet situation execution corresponding operating being set is to carry out following steps when not receiving described packet once more:

When not receiving described packet once more, the situation that is provided with of determining the usb bus idle marker and postponing to handle; And

Carry out associative operation, described being operating as according to the described situation that is provided with: when described usb bus idle marker and postpone to handle when all being provided with, postpone processing to described packet; When described usb bus idle marker is not provided with, described sign is set then; When described delay processing is not provided with, delay then is set handles.

11, a kind of system that detects main frame USB interface transfer rate is characterized in that, described system comprises:

One host computer, described host computer comprises: a USB controller is used to provide the USB interface of carrying out detection; And a driver module, be used to generate the firmware program that detection is provided;

One peripheral controls chip, described peripheral controls chip comprises: a storage module is used to deposit the detection data; One firmware handle module is used to carry out described firmware program; And

One connecting circuit is used to provide the connecting circuit between described host computer and the described peripheral controls chip.

12, the system of detection main frame USB interface transfer rate as claimed in claim 11 is characterized in that, described peripheral controls chip is a USB2.0 peripheral controls chip.

13, the system of detection main frame USB interface transfer rate as claimed in claim 11 is characterized in that, described storage module is the storage area in the USB2.0 chip.

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