CN103336755A

CN103336755A - Program-controlled multimode serial port distributor

Info

Publication number: CN103336755A
Application number: CN2013102271713A
Authority: CN
Inventors: 王川; 赵先龙; 张博; 邓玉芬; 阮锐; 孙磊
Original assignee: 92859 FORCES PLA
Current assignee: 92859 FORCES PLA
Priority date: 2013-06-08
Filing date: 2013-06-08
Publication date: 2013-10-02
Anticipated expiration: 2033-06-08
Also published as: CN103336755B

Abstract

The invention relates to a program-controlled multimode serial port distributor. The program-controlled multimode serial port distributor is mainly characterized in the technical aspect by comprising an FPGA (Field Programmable Gata Array) module, a power module, a plurality of MAX 232 serial port chips, a plurality of MAX 3160 serial port chips, and a memory module, wherein the power module is connected to the FPGA module, the memory module, the MAX 232 serial port chips and the MAX 3160 serial port chips, and supplies power for the FPGA module, the memory module, the MAX 232 serial port chips and the MAX 3160 serial port chips; the FPGA module is connected with the MAX 232 serial port chips, the MAX 3160 serial port chips and the memory module; one MAX 232 serial port chip serves as a control serial port and is connected with a host computer. The program-controlled multimode serial port distributor is designed reasonably, that is, a two-mode optional connection function of the multi-serial ports is realized due to the FPGA module and the serial port chips connected with the FPGA module; the working mode of the MAX 3160 serial port chips and the connection manner of any serial ports can be adjusted under the control of the host computer, so as to realize mode conversion and free interconnection functions of a plurality of serial port equipment. The program-controlled multimode serial port distributor has the characteristics of convenience in installation, reliable performance, and flexibility and convenience in use.

Description

Program control multi-mode serial ports divider

Technical field

The invention belongs to the serial port communication technology field, especially a kind of program control multi-mode serial ports divider.

Background technology

Serial communication is a kind of communication modes that transmits data by step-by-steps such as data signal line, ground wire, control lines.Because serial communication is that one one ground transmits information on a transmission line, used transmission line is few, therefore, can be widely used in the external unit of those and computing machine people-machine switching equipment not far from one another and serial storage such as terminal, printer, logic analyser, disk etc.Serial communication comprises RS232 serial ports and RS422 serial ports, a lot of communication facilitiess in some main equipments or system, have been comprised, these communication facilitiess need communicate to finish data exchanging function in real time by serial ports, the communication facilities of existing RS232 serial ports between the above-mentioned communication facilities, the communication facilities that the RS422 serial ports is arranged again, and the data interaction complex forms, how making the communication facilities of their distinct interface carry out efficient communication is the problem that presses for solution at present.

Summary of the invention

The objective of the invention is to overcome the deficiencies in the prior art, propose a kind of reasonable in design, can carry out effectively the multichannel interface conversion function program control multi-mode serial ports divider.

The present invention solves its technical matters and takes following technical scheme to realize:

A kind of program control multi-mode serial ports divider, comprise FPGA module, power module, a plurality of MAX232 serial port chip, a plurality of MAX3160 serial port chip and memory module, power module is connected to FPGA module, memory module, MAX232 serial port chip and MAX3160 serial port chip and is its power supply, the FPGA module is connected with MAX232 serial port chip, MAX3160 serial port chip, memory module, and one of them MAX232 serial port chip is joined as control serial ports and host computer.

And, described FPGA module comprises the bootstrapping module, the parsing of the data stream module, control register, connect mixed-media network modules mixed-media, control pin and data pins, bootstrapping module and control register are connected with program storage and data-carrier store in the memory module respectively, this bootstrapping module also is connected with control register and parsing of the data stream module, this parsing of the data stream module respectively with control serial ports, control register and connection mixed-media network modules mixed-media are connected, this control register is also with the control pin and be connected mixed-media network modules mixed-media and be connected, this connection mixed-media network modules mixed-media also is connected with data pins, and the control pin is connected with the MAX3160 serial port chip with the MAX232 serial port chip respectively with data pins.

And described host computer is connected be used to the mode of operation that FPGA is set with the parsing of the data stream module by the control serial ports, and the mode of operation of described FPGA is operational mode or debugging mode.

And described host computer is connected be used to the connected mode that any serial ports is set with the parsing of the data stream module by the control serial ports, and the connected mode of described any serial ports is interconnected, one-to-many connection or connected in series mutually in twos.

And described host computer is connected be used to the mode of operation that the MAX3160 chip is set with the parsing of the data stream module by the control serial ports, and the mode of operation of described MAX3160 chip is RS422 pattern or RS232 pattern.

And described memory module comprises program storage and data-carrier store.

Advantage of the present invention and good effect are:

The present invention is by any linkage function of many serial ports of FPGA module and be connected MAX232 serial port chip and two kinds of patterns of MAX3160 serial port chip realization, under the control of host computer, can adjust the mode of operation of MAX3160 interface and the connected mode of any serial ports, can realize that a plurality of serial equipment patterns change and free interconnecting function, have easy for installation, dependable performance, characteristics such as flexible and convenient to use.

Description of drawings

Fig. 1 is circuit block diagram of the present invention;

Fig. 2 is FPGA internal logic graph of a relation of the present invention.

Embodiment

Below in conjunction with accompanying drawing the present invention is further described:

A kind of program control multi-mode serial ports divider as shown in Figure 1, comprises FPGA module, power module, a plurality of MAX232 serial port chip, a plurality of MAX3160 serial port chip, memory module and switch is set.Power module is connected to the FPGA module, memory module and MAX232 serial port chip and MAX3160 serial port chip are its power supply, FPGA module and MAX232 serial port chip, the MAX3160 serial port chip, memory module, control serial ports and switch is set and be connected, FPGA module controls MAX232X chip, the MAX3160 serial port chip realizes the communication control function to each serial port chip, can distributing between any distribution serial ports in twos, interconnected or serial ports links to each other with a plurality of serial ports, the FPGA module can also arrange the mode of operation of MAX3160 serial port chip simultaneously, and the mode of operation of MAX3160 serial port chip comprises 422 serial ports patterns or 232 serial ports patterns; Each MAX232X chip all is connected with 9 pin RS232 serial ports to realize the RS232 communication function, and each MAX3160 serial port chip all connects 25 pin RS422 serial ports to realize RS422 communication function or RS232 communication function.In the present embodiment, the quantity of 9 pin RS232 serial ports is 16, and corresponding MAX232 serial port chip is 16, and the quantity of 25 pin RS422 serial ports is 30, and corresponding MAX3160 serial port chip is 30.In above-mentioned MAX232 serial port chip, with one of them MAX232 serial port chip as control serial ports, the FPGA module is joined by this control serial ports and host computer and is realized communication function with host computer, the connection that the FPGA module can receive host computer arranges order and is connected querying command with serial ports, on the one hand the order that arranges according to host computer arranges the mode of operation of each serial port chip, according to the querying command of host computer duty and the annexation of all serial ports of FPGA is sent to host computer on the other hand.The FPGA module realizes procedure stores and data storage function by memory module, this memory module comprises program storage and data-carrier store, wherein program storage is used for storage FPGA control program, data-carrier store is used for storage FPGA data, when program control multi-mode serial ports divider powered on, the FPGA module read data automatically to revert to the duty before the power down from memory module.The mode of operation that switch is used for FPGA is set, can finishes above-mentioned control function under operational mode, under debugging mode, host computer is finished the debug function to program control multi-mode serial ports divider.

As shown in Figure 2, the FPGA module comprises the bootstrapping module, the parsing of the data stream module, control register, connect mixed-media network modules mixed-media, control pin and data pins, bootstrapping module and control register are connected with program storage and data-carrier store in the memory module respectively, this bootstrapping module also is connected with control register and parsing of the data stream module, this parsing of the data stream module respectively with control serial ports, control register and connection mixed-media network modules mixed-media are connected, this control register is also with the control pin and be connected mixed-media network modules mixed-media and be connected, this connection mixed-media network modules mixed-media also is connected with data pins, and the control pin is connected with the MAX3160 serial port chip with the MAX232 serial port chip respectively with data pins.The principle of work of FPGA module is: the FPGA module realizes the functions such as control of the interconnected and serial ports pattern of computer program-control, many serial ports as the processing core of program control multimode serial ports.After system powered on, the program code that the bootstrapping module will be kept in the program register automatically was loaded among the FPGA, with the operation of control parsing of the data stream module and control register.Serial communication between the continual maintenance of parsing of the data stream module and the host computer: the parsing of the data stream module receives the data that host computer transmits, carrying out analysis judgment is order or tune-up data, if order, it is sent into control register and deposits in the data-carrier store preserve; If tune-up data is sent it into the connection mixed-media network modules mixed-media.The parsing of the data stream module collects from the data of controlling register, connection mixed-media network modules mixed-media it to be passed to host computer simultaneously.The order that control register transmits according to the parsing of the data stream module arranges the level of FPGA control pin, realizes the pattern control of work serial ports.The mode of operation of MAX3160 interface and the connected mode of any serial ports are adjusted in the order that the connection mixed-media network modules mixed-media transmits according to the parsing of the data stream module, realize that a plurality of serial equipment patterns change and free interconnecting function.

It is emphasized that; embodiment of the present invention is illustrative; rather than it is determinate; therefore the present invention is not limited to the embodiment described in the embodiment; every other embodiments that drawn by those skilled in the art's technical scheme according to the present invention belong to the scope of protection of the invention equally.

Claims

1. program control multi-mode serial ports divider, it is characterized in that: comprise FPGA module, power module, a plurality of MAX232 serial port chip, a plurality of MAX3160 serial port chip and memory module, power module is connected to FPGA module, memory module, MAX232 serial port chip and MAX3160 serial port chip and is its power supply, the FPGA module is connected with MAX232 serial port chip, MAX3160 serial port chip, memory module, and one of them MAX232 serial port chip is joined as control serial ports and host computer.

2. program control multi-mode serial ports divider according to claim 1, it is characterized in that: described FPGA module comprises the bootstrapping module, the parsing of the data stream module, control register, connect mixed-media network modules mixed-media, control pin and data pins, bootstrapping module and control register are connected with program storage and data-carrier store in the memory module respectively, this bootstrapping module also is connected with control register and parsing of the data stream module, this parsing of the data stream module respectively with control serial ports, control register and connection mixed-media network modules mixed-media are connected, this control register is also with the control pin and be connected mixed-media network modules mixed-media and be connected, this connection mixed-media network modules mixed-media also is connected with data pins, and the control pin is connected with the MAX3160 serial port chip with the MAX232 serial port chip respectively with data pins.

3. program control multi-mode serial ports divider according to claim 2, it is characterized in that: described host computer is connected be used to the mode of operation that FPGA is set with the parsing of the data stream module by the control serial ports, and the mode of operation of described FPGA is operational mode or debugging mode.

4. program control multi-mode serial ports divider according to claim 2, it is characterized in that: described host computer is connected be used to the connected mode that any serial ports is set with the parsing of the data stream module by the control serial ports, and the connected mode of described any serial ports is interconnected, one-to-many connection or connected in series mutually in twos.

5. program control multi-mode serial ports divider according to claim 2, it is characterized in that: described host computer is connected be used to the mode of operation that the MAX3160 chip is set with the parsing of the data stream module by the control serial ports, and the mode of operation of described MAX3160 chip is RS422 pattern or RS232 pattern.

6. program control multi-mode serial ports divider according to claim 1, it is characterized in that: described memory module comprises program storage and data-carrier store.