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HPS-based OSD interface switching scheme of FPGA

A technology of interface switching and solutions, applied in the computer field, can solve the problems of too many main chips and inconvenient circuit layout, etc., and achieve the effect of reducing power consumption and saving the number of chips

Inactive Publication Date: 2014-08-20
SHANDONG CHAOYUE DATA CONTROL ELECTRONICS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the entire multi-unit server, there are many main chips needed to realize the KVM function, which is inconvenient in circuit layout

Method used

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  • HPS-based OSD interface switching scheme of FPGA
  • HPS-based OSD interface switching scheme of FPGA
  • HPS-based OSD interface switching scheme of FPGA

Examples

Experimental program
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Embodiment Construction

[0018] The invention includes devices: a PC, a hardware socket development board, a virtual machine for compiling and modifying the linux3.8 kernel, a serial port and a network port for burning application programs to an SD card, and Quartus 13.1 for downloading hardware circuits.

[0019] figure 2 It is the hardware circuit diagram built by qsys in this design scheme, and the *.sof file generated after instantiating and compiling the circuit diagram module is downloaded to FPGA by QuartusII 13.1.

[0020] image 3 It is the implementation scheme of the software. This implementation scheme is implemented under the linux whose kernel version is linux3.8, and the compiled kernel is burnt to the SD card. Write an application program that realizes OSD interface switching, compile and generate an executable file and burn it to the SD card through the network port and serial port.

[0021] Figure 4 It is a program flow chart. Part of the application program that implements OSD ...

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PUM

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Abstract

The invention provides an HPS-based OSD interface switching scheme of an FPGA and belongs to the field of computers. According to the scheme, the FPGA with a hardcore (HPS) is used as a control unit, a peripheral module of the hardcore is set up through the FPGA, RGA signals are output, so that pictures are displayed on a display screen through a DA conversion chip, and switching between the pictures is controlled through a keyboard. Through the scheme, power consumption is reduced, the number of chips is reduced, and locating and wiring of a PCB of a management panel can be performed conveniently.

Description

[0001] technical field [0002] The invention relates to the field of computers, for use in multi-unit servers. Select the blade mainboard to be operated by calling the OSD interface of the multi-unit server management board. Background technique [0003] In previous multi-unit servers, the calling of the OSD interface was realized through a single-chip microcomputer plus an OSD chip. In the entire multi-unit server, many main chips are required to realize the KVM function, which is inconvenient in circuit layout. Considering the size of the circuit board during circuit design and reducing the number of chips used, a new implementation is needed to realize interface switching. Contents of the invention [0004] The patent of the present invention utilizes FPGA with HPS to replace single-chip microcomputer and OSD chip exactly. Inside FPGA: Use HPS plus FPGA peripheral module to realize switching and calling of OSD interface. [0005] The invention provides a switc...

Claims

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Application Information

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IPC IPC(8): G06F3/02G06F3/14G06F9/44
Inventor 张孝飞刘强金长新
Owner SHANDONG CHAOYUE DATA CONTROL ELECTRONICS CO LTD
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