CN101493800A - System and method for implementing a plurality of input-output cartoon letters by general-purpose input-output - Google Patents
System and method for implementing a plurality of input-output cartoon letters by general-purpose input-output Download PDFInfo
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- CN101493800A CN101493800A CNA200810008524XA CN200810008524A CN101493800A CN 101493800 A CN101493800 A CN 101493800A CN A200810008524X A CNA200810008524X A CN A200810008524XA CN 200810008524 A CN200810008524 A CN 200810008524A CN 101493800 A CN101493800 A CN 101493800A
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Abstract
The invention relates to a system for realizing communication of a plurality of input-output cards by utilizing GPIO (general purpose input-output) and a method thereof, which are used for solving the problems of larger link number, higher requirements for bus resources of a processing chip and increase of the cost, caused by using a special I2C and an UART communication pipeline in the prior art. The invention adopts at least a general input-output port to replace a failure line of the I2C or the communication pipeline of one failure line of the UART, utilizes one or a plurality of additional general input-output ports as the backup general input-output ports to realize the expansion of the whole bus, thus achieving the advantages of large backup degree, low cost, flexible switching, few link number and highly reliable interconnection.
Description
Technical field
The present invention relates to the system and method for communicating by letter between a kind of a plurality of input-output card, particularly a kind of system and method that utilizes general input and output to realize and communicating by letter between a plurality of input-output cards.
Background technology
When in computer system, utilizing two input-output cards to carry out two-way communication, can carry out the high reliability of two-way communication in order to ensure two input-output cards, usually use two communication pipes,, realize the high reliability of communication pipe as I2C or UART port.Yet, be relatively to waste the existing bus resource of input-output card like this, in addition, under this kind bus resource condition of limited, be difficult to realize the high reliability of communication pipe.
Please refer to shown in Figure 1A and Figure 1B, Figure 1A is the system architecture diagram of two input-output cartoon letters of known technology, and Figure 1B is two input-output cartoon letters method flow diagrams of known technology.In Figure 1A, the system architecture of known technology comprises plate 14 in one first input-output card 10, one second input-output card 12 and.Carry out the transmission of signal by plate in this 14 between this first input-output card 10 and this second input-output card 12, this first input-output card 10 and this second input-output card 12 respectively have a first microprocessor unit 100 and one second microprocessor unit 120, this first microprocessor unit 100 and this second microprocessor unit 120 are when design, many function pin positions are designed in the capital as required, in any case but all can design communication pipe pin position, in order to communicate by letter with external chip.Therefore, in order to realize the high reliability of communication pipe, two communication pipes of capital design, so this first microprocessor unit 100 has one first communication pipe 1000 and a second communication pipeline 1002, and this second microprocessor unit 120 has a third communication pipeline 1200 and a four-way fuse tube road 1202.
Above-mentioned first communication pipe 1000 and four-way fuse tube road 1202 can be internal integrated circuit (I2C, below all be called for short with this) communication interface, and second communication pipeline 1002 and third communication pipeline 1200 can be general asynchronous reception/forwarder (UART, below all be called for short with this) communication interface.Certainly, when actual design, design that can be opposite, also promptly first communication pipe 1000 and four-way fuse tube road 1200 can be the UART communication interface, and second communication pipeline 1002 and third communication pipeline 1202 can be the I2C communication interface.
Please also refer to Figure 1A and Figure 1B, Figure 1B is two input-output cartoon letters method flow diagrams of known technology, at first, carry out the initialization interconnection action of first input-output card 10 and second input-output card 12, see step S100, whether then detect first communication pipe 1000 and four-way fuse tube road 1202 breaks down, see step S102, if the result who detects is for being, then enable second communication pipeline 1002 and third communication pipeline 1200 and carry out communication operation between first input-output card 10 and second input-output card 12, see step S104, otherwise, if the result who detects is not for the time, then carry out communication operation between first input-output card 10 and second input-output card 12 by first communication pipe 1000 and four-way fuse tube road 1202, see step S106.
As mentioned above, agreement by first communication pipe 1000 and four-way fuse tube road 1202 (I2C) and second communication pipeline 1002 and third communication pipeline 1200 (UART) between two input-output cards realizes in the situation of interconnection, any signal line in first communication pipe 1000 and four-way fuse tube road 1202 is damaged and causes the bus in first communication pipe 1000 and four-way fuse tube road 1202 all to lose efficacy, and then can only use second communication pipeline 1002 and four-way fuse tube road 1202 substitutes first communication pipe 1000 and four-way fuse tube road 1202 modules this moment.First communication pipe 1000, four-way fuse tube road 1202 and second communication pipeline 1002, third communication pipeline 1200 these two paths are for reliable and stable and design, yet wiring quantity is more like this, for processor chips, not having too many resource in the application of reality can utilize, just for processor chips, bus resource for processor chips requires to uprise, so cost also can correspondingly increase.
Summary of the invention
In order to overcome in the known technology resource requirement problem of higher of using the more and bus of wiring quantity, the present invention proposes a kind of system and method that utilizes general input and output to realize a plurality of input-output cartoon letters.
The present invention proposes a kind of system that utilizes general input and output to realize and communicating by letter between a plurality of input-output cards, comprise one first input-output card, this first input-output card has at least one first universal input and output port, and described first universal input and output port comprises at least one first backup universal input and output port; And one second input-output card, be electrically connected at this first input-output card via plate in, this second input-output card has at least one second universal input and output port, and described second universal input and output port comprises at least one second backup universal input and output port; Wherein, when this first universal input and output port breaks down, the described first backup universal input and output port promptly can replace this first universal input and output port that breaks down automatically, and communicates by described first backup universal input and output port and the described second backup universal input and output port.
The present invention also proposes a kind ofly to utilize general input and output to realize method for communicating between a plurality of input-output cards, comprises the following steps: one first universal input and output port of initialization one first input-output card and second universal input and output port of one second input-output card; Detect this first universal input and output port and whether this second universal input and output port breaks down; If the result who detects step is for being, then enable one first backup universal input and output port of this first input-output card and one second backup universal input and output port of this second input-output card, to replace the universal input and output port of this first universal input and output port that breaks down and the universal input and output port of this second universal input and output port respectively; And carry out communication between this first input-output card and this second input-output card by the general output port of this first backup universal input and output port and this second backup.
Because the I2C of known technology or UART port have the restriction of quantity can't carry out extra expansion, yet universal input and output port has extendability, also be that universal input and output port allows autonomous the adjustment, so being the employing universal input and output port, the present invention carries out the communication between at least one the input-output card, from universal input and output port, use one or more input/output port as the agreement of backup universal input and output port, replace known I2C or UART port as communication pipe to simulate existing communication protocol or to define voluntarily.So design makes the present invention can reach the advantage that the backup degree is big, cost is low, switching is flexible, the line number reaches the high reliability interconnection less.
About feature of the present invention and practical operation, conjunction with figs. is described in detail as follows as preferred embodiment.
Description of drawings
The system architecture diagram of Figure 1A for communicating by letter between two input-output cards of known technology;
Figure 1B is a communication means process flow diagram between two input-output cards of known technology;
Fig. 2 A is the system architecture diagram that utilizes general input and output to realize and communicating by letter between a plurality of input-output cards of the present invention; And
Fig. 2 B of the present inventionly utilizes general input and output to realize method for communicating process flow diagram between a plurality of input-output cards.
Wherein, description of reference numerals is as follows:
10 first input-output cards
100 first microprocessor unit
1,000 first communication pipes
1002 second communication pipelines
120 second microprocessor units
12 second input-output cards
1200 third communication pipelines
1202 four-way fuse tube roads
Plate in 14
20 first input-output cards
200 first microprocessor unit
2,000 first universal input and output port
2002,2402 universal input and output port
2,004 first backup universal input and output port
Plate in 22
24 second input-output cards
240 second microprocessor units
2,400 second universal input and output port
2,404 second backup universal input and output port
Embodiment
Please refer to Fig. 2 A, be the system architecture diagram that utilizes general input and output to realize and communicating by letter between a plurality of input-output cards of the present invention, below be as implementation with two input-output cards in the present invention, yet the present invention is not limited to this, and system and method for the present invention all can be applicable on many input-output cards.
System of the present invention comprises plate 22 and one second input-output card 24 in one first input-output card 20.First input-output card 20 and second input-output card 24 respectively have a first microprocessor unit 200 and one second microprocessor unit 240, the first microprocessor unit 200 and second microprocessor unit 240 are when design, many function pin positions are designed in the capital as required, in any case but all can design communication pipe pin position, in order to communicate to connect with external chip.
The first microprocessor unit 200 of first input-output card 20 has at least one first universal input and output port 2000, and described first universal input and output port 2000 comprises at least one first backup universal input and output port 2004 and at least one universal input and output port 2002, employed communication protocol can be I2C or UART on the described universal input and output port 2002, system of the present invention is to be example with I2C in this employed communication protocol, certainly this does not limit the present invention, as long as adaptable communication protocol all can be adopted by system of the present invention.
Middle plate 22 provides the transmission to electric connection and signal thereof between first input-output card 20 and this second input-output card 24, certainly plate 22 is not only the function of the transmission that above-mentioned electric connection and signal thereof are provided in, and middle plate 22 also can comprise other electronic component or other chip.
Second input-output card 24 is to be electrically connected at first input-output card 20 via middle plate 22, second microprocessor unit 240 of second input-output card 24 has at least one second universal input and output port 2400, and described second universal input and output port 2400 comprises at least one second backup universal input and output port 2404 and at least one universal input and output port 2402, employed communication protocol can be corresponding to first universal input and output port, 2000 employed communication protocols on the described universal input and output port 2402, as I2C or UART, system of the present invention is to be example with I2C in this employed communication protocol, and serial data line (SDA) and two circuits of serial clock taps (SCA) have been defined in the specification of I2C, certainly this does not limit the present invention, as long as adaptable communication protocol all can be adopted by system of the present invention.
When practical operation, when the universal input and output port 2002 in the first microprocessor unit 200 of first input-output card 20 breaks down, system of the present invention is to be example with I2C, for example wherein the serial data line of I2C breaks down, when causing the serial data line signal of I2C correctly not to be sent to second input-output card 24, then first microprocessor unit 200 will detect this situation, can automatically use the function that the first backup universal input and output port 2004 and the second backup universal input and output port 2404 realize serial data line, to carry out the communication operation between first input-output card 20 and second input-output card 24.
On the contrary, if wherein the serial clock taps (SLA) of I2C is when breaking down, when causing the serial clock taps signal of I2C correctly not to be sent to second input-output card 24, when then first microprocessor unit 200 will detect this situation, can automatically use the function that the first backup universal input and output port 2004 and the second backup universal input and output port 2404 realize the serial clock taps, to carry out the communication operation between first input-output card 20 and second input-output card 24.
Please also refer to Fig. 2 A and Fig. 2 B, Fig. 2 B of the present inventionly utilizes general input and output to realize method for communicating process flow diagram between a plurality of input-output cards.At first, carry out the initialization action of second universal input and output port 2400 of first universal input and output port 2000 of first input-output card 20 and second input-output card 24, see step S200, wherein initialization action is during according to first microprocessor unit 200 and the design of second microprocessor unit 240, does initialized action for each defined function in pin position.Then, the situation whether the first microprocessor unit 200 and second microprocessor unit 240 will detect severally first universal input and output port 2000 and second universal input and output port 2400 break down, see step S202, in this system of the present invention is to be example with I2C, and detection of the present invention is to judge according to the situation of the backhaul signals of second universal input and output port of second microprocessor unit 240.
If the testing result of step S202 is when being, then further judge whether to break down for serial data line, see step S204, otherwise, if the result that step S202 detects is not for the time, then first microprocessor unit 200 can transmit a reset signal with the action of resetting of second microprocessor unit 240, see step S206, and the universal input and output port 2402 of the universal input and output port 2002 by first input-output card 20 and second input-output card 24 carries out the communication operation between first input-output card 20 and second input-output card 24, sees step S208.
In this embodiment, be to be main end points with first microprocessor unit 200, and be less important end points with second microprocessor unit 240, so among the step S204, be as signal sending end with first microprocessor unit 200, after first microprocessor unit 200 sends signal, if in the time of can't receiving the response signal of 240 loopbacks of second microprocessor unit, also promptly judge when serial data line has broken down, the reason of its fault may be that signal wire damages, the broken string of the serial data line of the universal input and output port 2402 of second microprocessor unit 240 or the power supply of second microprocessor unit 240 are crossed low and can't be sent response signal, so enable first backup universal input and output port 2004 of first input-output card 20 and the second backup universal input and output port 2404 of second input-output card 24, serial data line with the universal input and output port 2402 of the serial data line of the universal input and output port 2002 that replaces first universal input and output port 2000 break down respectively and second universal input and output port 2400, see step S210, the first backup universal input and output port 2004 of this moment and the second backup universal input and output port 2404 are all used as serial data line.
Carry out communication between first input-output card 20 and second input-output card 24 by the first backup universal input and output port 2004 and the general output port 2404 of second backup then, see step S212.Otherwise, if judged result in step S204 is not for the time, further judge whether again to break down for the serial clock taps, see step S214, in step S214, when if the result who judges breaks down for the serial clock taps, then enable first backup universal input and output port 2004 of first input-output card 20 and the second backup universal input and output port 2404 of second input-output card 24, serial clock taps with the universal input and output port 2402 of the serial clock taps of the universal input and output port 2002 that replaces first universal input and output port 2000 break down respectively and second universal input and output port 2400, see step S210, the first backup universal input and output port 2004 of this moment and the second backup universal input and output port 2404 are all used as the serial clock taps.Carry out communication between first input-output card 20 and second input-output card 24 by the first backup universal input and output port 2004 and the general output port 2404 of second backup then, see step S212.
If the judged result of step S214 is not for the time, then first microprocessor unit 200 can transmit a reset signal with the action of resetting of second microprocessor unit 240, see step S206, and the universal input and output port 2402 of the universal input and output port 2002 by first input-output card 20 and second input-output card 24 carries out the communication operation between first input-output card 20 and second input-output card 24, sees step S208.
Say as above-mentioned institute, between two input-output cards, replace in the situation that the I2C agreement realizes interconnection, when the serial data line among the I2C breaks down the serial data line that causes I2C can not correctly arrive another input-output card the time by universal input and output port.First microprocessor unit 200 as order end Simulation with I 2C will detect this situation, when this thing happens, first microprocessor unit 200 will automatically be used the first backup universal input and output port 2004 and replace serial data line, notify second microprocessor unit 240 then as receiving end Simulation with I 2C, the second backup universal input and output port 2404 is enabled as serial data line, then the order end will transmit signal to the second backup universal input and output port 2404 by the first backup universal input and output port 2004, to realize the function of serial data line.
By that analogy, break down the serial clock taps that causes I2C another input-output card can not correctly be arrived the time when the serial clock taps.First microprocessor unit as order end Simulation with I 2C will detect this situation, when this thing happens, first microprocessor will automatically be used the first backup universal input and output port 2004 and replace the serial clock taps, notify second microprocessor unit then as receiving end Simulation with I 2C, the second backup universal input and output port 2404 is enabled as the serial clock taps, the order end will transmit signal to the second backup universal input and output port 2404 by the first backup universal input and output port 2004 then, to realize the function of serial clock taps.So, the present invention can be so as to realizing the function of backup.
The present invention only needs to use simple universal input and output port and realizes interconnection between a plurality of input-output cards, and the difference and the backup degree of the agreement of being moved on the circuit that uses according to reality decide the quantity that backs up universal input and output port.During as wall scroll universal input and output port operation agreement, can use an other backup universal input and output port and realize backup functionality, perhaps realize the backup functionality of degree of backup greatly with other n bar backup universal input and output port, above-mentioned n can be round values, for example can be by number 1 beginning to the number value set of want.Can adopt wall scroll or many backup universal input and output port in two bars or many interconnection, when a universal input and output port broke down, backup universal input and output port circuit will replace the universal input and output port of fault automatically and carry out running.
The present invention adopts a plurality of independently universal input and output port that two advantages are arranged, first advantage, exactly in the time will reaching with the same purpose that realizes of known technology I2C or UART, signal wire used in the present invention is compared less with employed I2C of known technology or UART, promptly the signal wire of tolerable line is less.Second advantage is that universal input and output port can be used as Hot Spare, with the high reliability that realizes communicating by letter between a plurality of input-output cards.When having one or more to break down in the circuit that uses, at this moment, spare line will replace the work of faulty line automatically.
The different communication pipes that are to give up employed specific I2C of known technology and UART of the present invention and known technology, but adopt universal input and output port to realize interconnection running between a plurality of input-output cards, the agreement of on universal input and output port, simulating prior protocols (as I2C or UART) or defining voluntarily, use one or more extra universal input and output port as the backup universal input and output port to realize the backup of entire bus, thereby realize that connection line is few and the backup degree is big, reduce the interconnection between a plurality of input-output cards of cost and high reliability, so to make that the present invention can reach the backup degree big in design, cost is low, switch flexibly, the line number reaches the advantage of high reliability interconnection less.
Though the present invention discloses as above with aforesaid preferred embodiment, yet it is not in order to limit the present invention.Without departing from the spirit and scope of the present invention, change of being done and modification all belong to scope of patent protection of the present invention.Please refer to the scope of appending claims about the protection domain that the present invention defined.
Claims (10)
1. one kind is utilized general input and output to realize method for communicating between a plurality of input-output cards, it is characterized in that, comprises the following steps:
One first universal input and output port of initialization one first input-output card and second universal input and output port of one second input-output card;
Detect this first universal input and output port and whether this second universal input and output port breaks down;
If the result who detects step is for being, then enable one first backup universal input and output port of this first input-output card and one second backup universal input and output port of this second input-output card, to replace the universal input and output port of this first universal input and output port that breaks down and the universal input and output port of this second universal input and output port respectively; And
Carry out communication between this first input-output card and this second input-output card by the general output port of this first backup universal input and output port and this second backup.
2. as claimed in claim 1ly utilize general input and output to realize method for communicating between a plurality of input-output cards, it is characterized in that this detection step is the backhaul signals according to this second universal input and output port.
3. as claimed in claim 1ly utilize general input and output to realize method for communicating between a plurality of input-output cards, it is characterized in that, this detects the step of this first universal input and output port and this second universal input and output port, if testing result is for being, then judge whether to break down for serial data line, otherwise, if testing result is not for, then a first microprocessor unit of this first input-output card can transmit a reset signal with the action of resetting of one second microprocessor unit of this second input-output card.
4. as claimed in claim 3ly utilize general input and output to realize method for communicating between a plurality of input-output cards, it is characterized in that, one first microprocessor unit of this first input-output card can transmit the step of a reset signal, and the universal input and output port that also comprises universal input and output port by this first input-output card and this second input-output card is carried out the communication operation between this first input-output card and this second input-output card.
5. as claimed in claim 3ly utilize general input and output to realize method for communicating between a plurality of input-output cards, it is characterized in that, this judges whether the step that breaks down for serial data line, if judged result is for being, then enable one first backup universal input and output port of this first input-output card and one second backup universal input and output port of this second input-output card, to replace the universal input and output port of this first universal input and output port that breaks down and the universal input and output port of this second universal input and output port respectively, otherwise, if judged result then judges whether to break down for the serial clock taps for not.
6. as claimed in claim 5ly utilize general input and output to realize method for communicating between a plurality of input-output cards, it is characterized in that, this judges whether the step that breaks down for the serial clock taps, if judged result is for being, then enable one first backup universal input and output port of this first input-output card and one second backup universal input and output port of this second input-output card, to replace the universal input and output port of this first universal input and output port that breaks down and the universal input and output port of this second universal input and output port respectively, otherwise, if the result who judges is not for, then a first microprocessor unit of this first input-output card can transmit a reset signal with the action of resetting of one second microprocessor unit of this second input-output card.
7. a system that utilizes general input and output to realize and communicating by letter between a plurality of input-output cards is characterized in that, comprising:
One first input-output card, this first input-output card has at least one first universal input and output port, and described first universal input and output port comprises at least one first backup universal input and output port; And
One second input-output card is electrically connected at this first input-output card, and this second input-output card has at least one second universal input and output port, and described first universal input and output port comprises at least one second backup universal input and output port;
Wherein, when this first universal input and output port breaks down, the described first backup universal input and output port promptly can replace this first universal input and output port that breaks down automatically, and communicates by described first backup universal input and output port and the described second backup universal input and output port.
8. the system that utilizes general input and output to realize and communicating by letter between a plurality of input-output cards as claimed in claim 7 is characterized in that, this first backup universal input and output port is as a serial datum line or a serial clock taps.
9. the system that utilizes general input and output to realize and communicating by letter between a plurality of input-output cards as claimed in claim 7 is characterized in that, this second backup universal input and output port is as a serial datum line or a serial clock taps.
10. the system that utilizes general input and output to realize and communicating by letter between a plurality of input-output cards as claimed in claim 7, it is characterized in that, also comprise plate in, be connected in this first input-output card and this second input-output card, in order to the transmission of signal between this first input-output card and this second input-output card to be provided.
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| Application Number | Priority Date | Filing Date | Title |
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| CN200810008524XA CN101493800B (en) | 2008-01-23 | 2008-01-23 | System and method for implementing a plurality of input-output cartoon letters by general-purpose input-output |
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| CN200810008524XA CN101493800B (en) | 2008-01-23 | 2008-01-23 | System and method for implementing a plurality of input-output cartoon letters by general-purpose input-output |
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| CN101493800A true CN101493800A (en) | 2009-07-29 |
| CN101493800B CN101493800B (en) | 2012-02-08 |
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| US11301409B2 (en) | 2017-04-07 | 2022-04-12 | Hewlett-Packard Development Company, L.P. | Input/Output modules |
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| CN104484246A (en) * | 2014-12-05 | 2015-04-01 | 中国航空工业集团公司第六三一研究所 | Integrated controller switching system |
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| US11301409B2 (en) | 2017-04-07 | 2022-04-12 | Hewlett-Packard Development Company, L.P. | Input/Output modules |
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