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High speed data transmission testing method based on PCI (Programmable Communications Interface) bus

A high-speed data transmission and PCI bus technology, applied in the computer field, can solve the problems of incompetence in data testing and achieve the effect of increasing speed

Inactive Publication Date: 2015-03-18
CHENGDU LINHAI ELECTRONICS
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Problems solved by technology

This PCI bus data transmission test method is suitable for data transmission at a lower rate, but it is difficult for high-speed transmission data testing

Method used

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  • High speed data transmission testing method based on PCI (Programmable Communications Interface) bus

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Embodiment Construction

[0022] The present invention will be further described in detail below in conjunction with test examples and specific embodiments. However, it should not be understood that the scope of the above subject matter of the present invention is limited to the following embodiments, and all technologies realized based on the content of the present invention belong to the scope of the present invention.

[0023] Such as figure 1 As shown, the steps of the high-speed data transmission testing method based on the PCI bus that the present embodiment enumerates are as follows:

[0024] S101: Initialize the application program, set the number of data frames read for each detection to 4096, allocate a data buffer for saving data, and the application program registers the read event with the driver, and waits for the event trigger;

[0025] S102: After the event is triggered, the application program calls the read file operation function in the driver program to read data;

[0026] S103: F...

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Abstract

The invention discloses a high speed data transmission testing method based on a PCI (Programmable Communications Interface) bus, and the method comprises the steps of: setting the number of data frames detected each time, and distributing a data cache region; reading the data and storing the data in the data cache region; judging whether the number of the read data frames reaches a set value, if not, returning to the last step to continue to read the data; if reaching the set value, judging whether the difference value of the adjacent data in each frame of data is 1, if not, displaying error information; if the difference value is 1, judging whether the difference value of the data at the same position in two adjacent data frames is 16384, if not, displaying error information; and if the difference value is 16384, passing the test. The high speed data transmission testing method based on PCI bus disclosed by the invention only needs to check the difference value of adjacent data in each frame of data and the data difference value at the same position of adjacent data frames during the testing process, so that the high speed data transmission test can be realized.

Description

technical field [0001] The invention relates to the technical field of computers, in particular to a PCI bus-based high-speed data transmission testing method. Background technique [0002] A computer bus is a common channel for information transmission between computer components. The bus structure is widely used in microcomputer systems, and its advantages are low system cost, flexible configuration, and convenient maintenance. The hardware modules designed and produced using the bus standard have strong compatibility, and can be easily combined through the system bus to form a microcomputer system that meets different needs. [0003] With the continuous development of computer technology, the architecture of microcomputer has undergone significant changes. Such as the improvement of CPU operating speed, the emergence of multi-processor structure, the widespread use of high-speed cache memory, etc., all require a high-speed bus to transmit data, thus a multi-bus structur...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F11/22
Inventor 吴伟林王亮姜维肖跃先何戎辽
Owner CHENGDU LINHAI ELECTRONICS
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