Information real-time interaction terminal based on embedded system

Abstract

The invention discloses an information real-time interaction terminal based on an embedded system. The information real-time interaction terminal comprises a CPU main control module, an SPI expansioncommunication module, a level conversion module and a power management module. The CPU master control module comprises a core processor AM3358, a reset circuit, a clock circuit, a download circuit, aFLASH circuit and an SDRAM circuit. The AM3358 is provided with six configurable serial ports and two high-speed SPI interfaces, the CPU main control module is connected with the SPI expansion communication module through a high-speed SPI interface, and the SPI expansion communication module converts an SPI signal into a serial port signal and transmits the serial port signal to the level conversion module; the CPU main control module can configure a serial port to be connected with the level conversion module and convert a received TTL level into an RS422 level to communicate with the external equipment, and the power supply management module supplies power to the system. According to the present invention, the problem that the communication serial ports are insufficient is effectively solved, and meanwhile the input and output states of the serial ports can be freely configured.

Description

technical field [0001] The invention relates to an information real-time interactive terminal, in particular to an embedded system-based information real-time interactive terminal, which belongs to the field of communication serial port expansion devices. Background technique [0002] In recent years, with the gradual maturity of hardware modularization and integrated design, when designing actual hardware systems, it is often necessary for the core control device to have multiple serial ports to facilitate communication and control with external components. With the increase of collected data in the satellite receiver system, when the antenna, the display and control terminal, and the satellite data solving module interact satellite signal data, the problem of insufficient communication serial ports will gradually appear. The present invention mainly solves the problem of communication between modules in the satellite receiver system To solve the problem of insufficient num...

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Problems solved by technology

[0006] In view of the above-mentioned prior art, the technical problem to be solved in the present invention is to provide a kind of information system based on embedded system that can effectively solve the problem of insufficient communication serial ports and realize data forwarding and information interaction between modules in the satellite receiver system. real-time interactive terminal

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