CN201754276U - On-line software upgrade and reset control circuit and system thereof - Google Patents
On-line software upgrade and reset control circuit and system thereof Download PDFInfo
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- CN201754276U CN201754276U CN2010200567067U CN201020056706U CN201754276U CN 201754276 U CN201754276 U CN 201754276U CN 2010200567067 U CN2010200567067 U CN 2010200567067U CN 201020056706 U CN201020056706 U CN 201020056706U CN 201754276 U CN201754276 U CN 201754276U
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- 230000005669 field effect Effects 0.000 claims description 3
- 239000004065 semiconductor Substances 0.000 claims description 3
- 238000010586 diagram Methods 0.000 description 8
- 210000004072 lung Anatomy 0.000 description 6
- 230000008094 contradictory effect Effects 0.000 description 5
- 230000009286 beneficial effect Effects 0.000 description 4
- 230000002093 peripheral effect Effects 0.000 description 3
- 206010002091 Anaesthesia Diseases 0.000 description 2
- 230000009471 action Effects 0.000 description 2
- 230000037005 anaesthesia Effects 0.000 description 2
- 230000029058 respiratory gaseous exchange Effects 0.000 description 2
- 208000004756 Respiratory Insufficiency Diseases 0.000 description 1
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 229940127554 medical product Drugs 0.000 description 1
- 229910044991 metal oxide Inorganic materials 0.000 description 1
- 150000004706 metal oxides Chemical class 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
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Abstract
The utility model provides an on-line software upgrade and reset control circuit, which comprises an upgrade control circuit and a reset control circuit, wherein the upgrade control circuit connected with an external lower computer is used for controlling the lower computer to download and upgrade software, and the reset control circuit connected with the lower computer is used for controlling the lower computer to reset. When control signals of the upgrade control circuit indicate download enabling, control signals of the reset control circuit indicate reset disenabling. The utility model further provides a system applying the on-line software upgrade and reset control circuit. The on-line software upgrade and reset control circuit and the system thereof can realize watchdog reset and/or manual reset, and realize on-line software downloading and upgrading.
Description
Technical field
The utility model relates to the medical product field, relates in particular to the lung ventilator with multi-CPU system and the online software upgrade and the reset control circuit of Anesthesia machine.The utility model also relates to a kind of online software upgrade and reset controlling system.
Background technology
The medical electronics product is lung ventilator for example, it is severe case's important salvage tool, more and more general in clinical practice, become ICU (intensive care unit, the grave illness room), the equipment of section office's indispensability such as division of respiratory disease, emergency department, Anesthesia Recovery Room, be used to anaesthetize, the respiratory failure due to a variety of causes and the breathing supportive treatment after the major operation.Lung ventilator mainly is made up of gas circuit structure and electrical control two large divisions, and gas circuit structure provides the patient respiration gas flow loop; Electric control system provides the control of device parts such as valve, sensor and data processing etc., thereby realizes regulation and control and alarm indication to airshed, to reach the purpose that appropriate airshed is provided to patient.At present, general lung ventilator all adopts many CPU (central processing unit, central processing unit) system, by a master system (perhaps main CPU system) other lower computer system (perhaps secondary cpu system) is upgraded, it is online software upgrade, finish the software upgrading of whole lung ventilator by online upgrading, thereby avoid opening the trouble of casing.Simultaneously, the lung ventilator hardware system also needs reliable reset and protection ability, makes it can carry out reset and protection immediately when running into abnormal conditions.
The utility model content
In order to solve the above-mentioned technical matters of prior art switch, be necessary to provide a kind of online software upgrade and reset control circuit with online software upgrading and reset and protection function.
Also be necessary to provide a kind of online software upgrade and reset controlling system.
A kind of online software upgrade and reset control circuit, comprise being connected and be used to control the upgrading control circuit of described slave computer software download and upgrade and be used to control the reset control circuit that described slave computer resets with being connected with described slave computer with outside slave computer, when the control signal of described upgrading control circuit enabled for downloading, the control signal of described reset control circuit could not for resetting.
In the utility model online software upgrade and the reset control circuit, described reset control circuit comprises first pull-up resistor, second pull-up resistor, the feeding-dog signal wire jumper, first terminating resistor, second terminating resistor, the watchdog chip and first switch element, described watchdog chip comprises the feeding-dog signal end, hand-reset end and watchdog reset end, described slave computer is connected to the feeding-dog signal input end of watchdog chip successively by the feeding-dog signal wire jumper and first terminating resistor, external voltage source is successively via first pull-up resistor, the feeding-dog signal wire jumper is connected the feeding-dog signal end with first terminating resistor, described hand-reset end is connected to external voltage source via second pull-up resistor, described watchdog reset end is successively via second terminating resistor, the source electrode of first switch element, drain electrode is connected to slave computer, and the grid of described first switch element is connected to the software upgrading control end.
In the utility model online software upgrade and the reset control circuit, described reset control circuit also comprises manual reset switch, and described hand-reset end is also via described manual reset switch ground connection.
In the utility model online software upgrade and the reset control circuit, described upgrading control circuit comprises the 3rd pull-up resistor, the 4th pull-up resistor, first pull down resistor, manual upgrading switch, second switch unit and the 3rd switch element, the 3rd pull-up resistor is connected between software upgrading control end and the external voltage source, external voltage source is connected to the grid of first switch element by the 3rd pull-up resistor, manually upgrading switch one end is connected to the grid of first switch element, other end ground connection, the bootmode pin also passes through the drain electrode of second switch unit successively, the source electrode base, the grid of second switch unit is via the first pull down resistor ground connection and via the drain electrode of the 3rd switch element, source ground, the drain electrode of the 3rd switch element also is connected to voltage source by the 4th pull-up resistor, the grid of the 3rd switch element is connected to master system, is used to receive the control signal of master system.
In the utility model online software upgrade and the reset control circuit, described first switch element, second switch unit and the 3rd switch element are N type metal-oxide-semiconductor field effect ts.
In the utility model online software upgrade and the reset control circuit, described first switch element, second switch unit and the 3rd switch element are and door or phase inverter.
In the utility model online software upgrade and the reset control circuit, the upgrading control circuit comprises the 3rd pull-up resistor, build-out resistor and the switch of manually upgrading, described the 3rd pull-up resistor is connected between software upgrading control end and the external voltage source, described manual upgrading switch one end is connected to the grid of first switch element, other end ground connection, described bootmode pin also is connected to master system via build-out resistor.
In the utility model online software upgrade and the reset control circuit, described download debugging interface adopts jtag interface.
A kind of online software upgrade and reset controlling system, comprise master system, lower computer system, reset control circuit, upgrading control circuit and download debugging interface, lower computer system comprises the slave computer central processing unit, described master system connects described slave computer CPU (central processing unit) by serial line interface, described reset control circuit connects described slave computer central processing unit, described upgrading control circuit connects described slave computer central processing unit and described master system, described download debugging interface connects described slave computer central processing unit, described reset control circuit is used to described slave computer central processing unit to reset, described upgrading control circuit is used for described slave computer central processing unit is manually upgraded or carried out online upgrading according to the control signal of master system, and described download debugging interface is used for the slave computer central processing unit is debugged.
In the utility model online software upgrade and the reset controlling system, described slave computer central processing unit comprises software upgrading control end and reseting controling end, described upgrading control circuit is connected to described software upgrading control end, and described reset control circuit is connected to described reseting controling end
Compared to prior art, the beneficial effect of the utility model online software upgrade and reset control circuit is to comprise upgrading control circuit and reset control circuit, have online software download and reset function, and can reset and online software upgrade by the effective coordination slave computer.
Compared to prior art, the further beneficial effect of the utility model online software upgrade and reset control circuit is that reset function is invalid when online downloading mode is effective; When reset function was effective, online downloading mode was invalid.
Compared to prior art, the further beneficial effect of the utility model online software upgrade and reset control circuit is to comprise first switch element, the watchdog reset function was lost efficacy by first switch element and solved online download and the contradictory problems that resets when effective by online downloading mode, reset function is forbidden under the JTAG pattern simultaneously, functions such as energy effective coordination watchdog reset, online software upgrade and JTAG on-line debugging make things convenient for On-line Product upgrading and debugging.
Compared to prior art, the beneficial effect of the utility model online software upgrade and reset controlling system is to comprise upgrading control circuit and reset control circuit, function be can realize according to the control signal of host computer, On-line Product upgrading and test made things convenient for slave computer online software upgrade and watchdog reset.
Description of drawings
Fig. 1 is the frame structure synoptic diagram of the utility model online software upgrade and a kind of embodiment of reset control circuit.
Fig. 2 is the electrical block diagram of the utility model online software upgrade and reset controlling system first embodiment.
Fig. 3 is the electrical block diagram of the utility model online software upgrade and reset controlling system second embodiment.
Fig. 4 is the electrical block diagram of the utility model online software upgrade and reset controlling system the 3rd embodiment.
Embodiment
Below in conjunction with Figure of description the utility model embodiment is described further.
Seeing also Fig. 1, is the frame structure synoptic diagram of the utility model online software upgrade and a kind of embodiment of reset control circuit.This online software and reset controlling system 10 comprise and upgrading control circuit 11 and reset control circuit 11.Described upgrading control circuit 11 is connected with slave computer 13, is used to control described slave computer software download and upgrade.Described reset control circuit is connected with described slave computer 13, is used to control described slave computer 13 and resets.When the control signal of 11 pairs of slave computers 13 of described upgrading control circuit enabled for downloading, the control signal of 12 pairs of slave computers 13 of described reset control circuit could not for resetting.Therefore, this online software upgrade and the control circuit 10 that resets have online software download and reset function, and can reset and online software upgrade by the effective coordination slave computer, solve online download and the contradictory problems that resets.
Seeing also Fig. 2, is the electrical block diagram of the utility model online software upgrade and reset controlling system first embodiment.This online upgrading and reset controlling system 20 comprise master system 21, lower computer system 201, reset control circuit 23, upgrading control circuit 24, download debugging interface 25.Wherein, when the control signal of described software upgrading control circuit 24 enabled for downloading, the control signal of described reset control circuit 23 could not for resetting.
The general input/output terminal P3 of slave computer central processing unit 22 is connected to the feeding-dog signal input end WDI of watchdog chip 231 successively by the feeding-dog signal wire jumper J1 and the first terminating resistor R3.External voltage source VDD is connected feeding-dog signal end WDI via the first pull-up resistor R1, hello dog pilot lamp D1, feeding-dog signal wire jumper J1 with the first terminating resistor R3 successively.Hand-reset end MR is connected to external voltage source VDD via manual reset switch K1 ground connection and via the second pull-up resistor R2.Watchdog reset end RESET is connected to reset terminal P2 via source electrode, the drain electrode of the second terminating resistor R4, the first switch element Q1 successively.The grid of the first switch element Q1 is connected to software upgrading control end P1.
Upgrading control circuit 24 comprises the 3rd pull-up resistor R5 and the 4th pull-up resistor R7, the first pull down resistor R6, manually upgrade K switch 2, second switch unit Q2 and the 3rd switch element Q3.The 3rd pull-up resistor R5 is connected between software upgrading control end P1 and the external voltage source VDD, also is voltage source V DD is connected to the first switch element Q1 by the 3rd pull-up resistor R5 grid.Manually upgrading K switch 2 one ends are connected to the grid of the first switch element Q1, other end ground connection.Bootmode pin P1 also passes through drain electrode, the source electrode base of second switch unit Q2 successively.The grid of second switch unit Q2 is via the first pull down resistor R6 ground connection and via drain electrode, the source ground of the 3rd switch element Q3.The drain electrode of the 3rd switch element Q3 also is connected to voltage source V DD by the 4th pull-up resistor R7.The grid of the 3rd switch element Q3 is connected to master system 21, is used to receive the control signal of master system 21.
Download debugging interface 25 and connect slave computer central processing unit 22, be used to slave computer central processing unit 22 that debugging interface is provided, wherein, this is downloaded debugging interface 25 and adopts JTAG (JointTest Action Group) interface, guarantees the jtag interface functional reliability by pull-up resistor.Outer PC can be debugged by downloading 25 pairs of lower computer systems 201 of debugging interface.
Above-mentioned first, second and the 3rd switch element Q1, Q2, Q3 are N type metal oxide semiconductor field effect transistor.Wherein, the 3rd switch element Q3 plays buffer action.Reset control circuit 3 can realize that hand-reset and house dog automatically reset.Upgrading control circuit 4 can be realized online upgrading and manually upgrading.
This online upgrading and reset controlling system 20 have mode of operations such as reset mode, online downloading mode and JTAG pattern, and its concrete principle of work is described below:
(1) reset mode: when WDT wire jumper J1 connected, voltage source V DD applied the grid of high level to the first switch element Q1 by the 3rd pull-up resistor R5, and the first switch element Q1 conducting is fed dog pilot lamp D1 and lighted.At this moment, online software upgrade and reset control circuit 20 are operated in reset mode.Press manual reset switch K1 and just can realize hand-reset, when perhaps reset control circuit 20 is not received feeding-dog signal in the long period of setting, carry out house dog by watchdog reset port RESET and automatically reset lower computer system 201.The reset terminal P2 of slave computer central processing unit 22 keeps low level, and it is in reset mode, and with the communicating interrupt of master system 21, and JTAG software download and online software upgrade all interrupt.
(2) online downloading mode: the K switch of manually upgrading 2 is pressed, perhaps master system 21 control signal when being low level that outputs to upgrading control circuit 24, and online software upgrade and reset control circuit 20 are operated in online downloading mode.At this moment, the software upgrading control end P1 ground connection of slave computer central processing unit 22, the first switch element Q1 grid is a low level, the first switch element Q1 closes, because Q1 causes reverse interlock function, reset terminal P2 keeps high level.Reset control circuit 23 quits work, and reset function is forbidden.After online downloading mode starts, allow the software program of master system 21 by serial ports upgrading or renewal lower computer system 201.
(3) JTAG pattern is pulled out WDT wire jumper J1, and the forbidding reset function starts the JTAG pattern, and software upgrading control end P1 and the reset terminal P2 of slave computer CPU are high level.
The utility model online software upgrade control circuit 20 also can have other change embodiments.For example, the described first switch element Q1, second switch unit Q2 and the 3rd switch element Q3 can be the high transistors of other corresponding speeds, can also be other elements, also can also use the device that has negative function with door or phase inverter etc. with three-terminal switch control function.
Compared to prior art, this online software upgrade and reset controlling system 20 are when online downloading mode is effective, the watchdog reset function was lost efficacy by the first switch element Q1, solve online download and the contradictory problems that resets, reset function is forbidden under the JTAG pattern simultaneously, functions such as energy effective coordination watchdog reset, online software upgrade and JTAG on-line debugging make things convenient for On-line Product upgrading and debugging.
Seeing also Fig. 3, is the electrical block diagram of the utility model online software upgrade and reset controlling system second embodiment.This online upgrading and reset controlling system 30 comprise master system 31, lower computer system (figure does not show), reset control circuit 33, upgrading control circuit 34, download debugging interface 35.Master system 31 comprises primary processor, and it is connected with upgrading control circuit 34, can apply control signal to upgrading control circuit 34.Master system 31 is connected to slave computer by the RS232 serial line interface.Lower computer system comprises slave computer central processing unit 32 and peripheral circuit (figure does not show).Slave computer central processing unit 32 comprises software upgrading control end P1, reset terminal P2, general input/output terminal P3 and asynchronous serial port UART.Described slave computer central processing unit 32 can adopt arm processor ADuC7026, but is not limited to ADuC7026, as long as have online downloading mode and the processor of the function that resets all can be applicable to this online upgrading and reset controlling system 30.Master system 31 is connected to the asynchronous serial port UART of slave computer central processing unit 32 by RS232.
Reset control circuit 33 comprises the first pull-up resistor R1 and the second pull-up resistor R2, feeds dog pilot lamp D1, feeding-dog signal wire jumper J1, the first terminating resistor R3 and the second terminating resistor R4, watchdog chip (Watch dog IC) the 331 and first switch element Q1.Watchdog chip 331 comprises feeding-dog signal end WDI, hand-reset end MR and watchdog reset end RESET.
The general input/output terminal P3 of slave computer central processing unit 32 is connected to the feeding-dog signal input end WDI of watchdog chip 331 successively by the feeding-dog signal wire jumper J1 and the first terminating resistor R3.External voltage source VDD is connected feeding-dog signal end WDI via the first pull-up resistor R1, hello dog pilot lamp D1, feeding-dog signal wire jumper J1 with the first terminating resistor R3 successively.Hand-reset end MR is connected to external voltage source VDD via the second pull-up resistor R2.Watchdog reset end RESET is connected to reset terminal P2 via source electrode, the drain electrode of the second terminating resistor R4, the first switch element Q1 successively.The grid of the first switch element Q1 is connected to software upgrading control end P1.Upgrading control circuit 34 comprises the 3rd pull-up resistor R5 and the 4th pull-up resistor R7, the first pull down resistor R6, manually upgrade K switch 2, second switch unit Q2 and the 3rd switch element Q3.The 3rd pull-up resistor R5 is connected between software upgrading control end P1 and the external voltage source VDD, also is voltage source V DD is connected to the first switch element Q1 by the 3rd pull-up resistor R5 grid.Manually upgrading K switch 2 one ends are connected to the grid of the first switch element Q1, other end ground connection.Bootmode pin P1 also passes through drain electrode, the source electrode base of second switch unit Q2 successively.The grid of second switch unit Q2 is via the first pull down resistor R6 ground connection and via drain electrode, the source ground of the 3rd switch element Q3.The drain electrode of the 3rd switch element Q3 also is connected to voltage source V DD by the 4th pull-up resistor R7.The grid of the 3rd switch element Q3 is connected to master system 31, is used to receive the control signal of master system 31.Download debugging interface 35 and connect slave computer central processing unit 32, be used to slave computer central processing unit 32 that the download debugging interface is provided, wherein, this is downloaded debugging interface 35 and adopts JTAG (Joint TestAction Group) interface.
The structure and the principle of work of the utility model second embodiment online software upgrade and reset controlling system 30 and the utility model first embodiment online software upgrade and reset controlling system 20 are basic identical, its difference has been to omit manual reset switch K1 and corresponding hand-reset function, and reset mode utilizes house dog to reset.
Compared to prior art, this online software upgrade and reset controlling system 30 are when online downloading mode is effective, the watchdog reset function was lost efficacy by the first switch element Q1, solve online download and the contradictory problems that resets, reset function is forbidden under the JTAG pattern simultaneously, functions such as energy effective coordination watchdog reset, online software upgrade and JTAG on-line debugging make things convenient for On-line Product upgrading and debugging.
Seeing also Fig. 4, is the electrical block diagram of the 3rd embodiment of the utility model online software upgrade and reset controlling system.
This online upgrading and reset controlling system 40 comprise master system 41, lower computer system (figure does not show), reset control circuit 43, upgrading control circuit 44, download debugging interface 45.Master system 41 comprises primary processor, and it is connected with upgrading control circuit 44, can apply control signal to upgrading control circuit 44.Master system 41 is connected to slave computer by the RS232 serial line interface.Lower computer system comprises slave computer central processing unit 42 and peripheral circuit (figure does not show).Slave computer central processing unit 42 comprises software upgrading control end P1, reset terminal P2, general input/output terminal P3 and asynchronous serial port UART.Described slave computer central processing unit 42 can adopt arm processor ADuC7026, but is not limited to ADuC7026, as long as have online downloading mode and the processor of the function that resets all can be applicable to this online upgrading and reset control circuit 40.Master system 41 is connected to asynchronous serial port UART by RS232.
The general input/output terminal P3 of slave computer central processing unit 42 is connected to the feeding-dog signal input end WDI of watchdog chip 331 successively by the feeding-dog signal wire jumper J1 and the first terminating resistor R3.External voltage source VDD is connected feeding-dog signal end WDI via the first pull-up resistor R1, hello dog pilot lamp D1, feeding-dog signal wire jumper J1 with the first terminating resistor R3 successively.Hand-reset end MR is connected to external voltage source VDD via the second pull-up resistor R2.Watchdog reset end RESET is connected to reset terminal P2 via source electrode, the drain electrode of the second terminating resistor R4, the first switch element Q1 successively.The grid of the first switch element Q1 is connected to software upgrading control end P1.Upgrading control circuit 34 comprises the 3rd pull-up resistor R5, build-out resistor R6 and the K switch 2 of manually upgrading.The 3rd pull-up resistor R5 is connected between software upgrading control end P1 and the external voltage source VDD, also is voltage source V DD is connected to the first switch element Q1 by the 3rd pull-up resistor R5 grid.Manually upgrading K switch 2 one ends are connected to the grid of the first switch element Q1, other end ground connection.Bootmode pin P1 also is connected to master system 41 via build-out resistor R6, is used to receive the control signal of master system 41.Download debugging interface 45 and connect slave computer central processing unit 42.Download debugging interface 45 and adopt JTAG (Joint TestAction Group) interface.
The utility model the 3rd embodiment online software upgrade and reset controlling system 40 are basic identical with the online software upgrade and reset controlling system 30 structures of second embodiment shown in Figure 3, its difference is: omitted second, third switch element Q2,03 of an acting in opposition, adopted the control signal that resistance R 6 is mated host computer.
Compared to prior art, this online software upgrade and reset controlling system 40 are when online downloading mode is effective, the watchdog reset function was lost efficacy by the first switch element Q1, solve online download and the contradictory problems that resets, reset function is forbidden under the JTAG pattern simultaneously, functions such as energy effective coordination watchdog reset, online software upgrade and JTAG on-line debugging make things convenient for On-line Product upgrading and debugging.
In sum, the utility model online software upgrade and reset control circuit and system thereof can realize watchdog reset and/or hand-reset, and realize online software download renewal.When the JTAG mode software is downloaded, only need pull out wire jumper J1 and promptly disconnect feeding-dog signal, handled easily can the effective coordination watchdog reset, functions such as online software upgrade and JTAG on-line debugging, makes things convenient for On-line Product upgrading and debugging.
The above only is preferred embodiment of the present utility model, not in order to restriction the utility model, all any modifications of being done within spirit of the present utility model and principle, is equal to and replaces and improvement etc., all should be included within the protection domain of the present utility model.
Claims (8)
1. online software upgrade and reset control circuit is characterized in that: comprise being connected with outside slave computer being used to control the upgrading control circuit of described slave computer software download and upgrade and being used to control the reset control circuit that described slave computer resets with being connected with described slave computer.
2. online software upgrade as claimed in claim 1 and reset control circuit, it is characterized in that: described reset control circuit comprises first pull-up resistor, second pull-up resistor, the feeding-dog signal wire jumper, first terminating resistor, second terminating resistor, the watchdog chip and first switch element, described watchdog chip comprises the feeding-dog signal end, hand-reset end and watchdog reset end, described slave computer is connected to the feeding-dog signal input end of watchdog chip successively by the feeding-dog signal wire jumper and first terminating resistor, external voltage source is successively via first pull-up resistor, the feeding-dog signal wire jumper is connected the feeding-dog signal end with first terminating resistor, described hand-reset end is connected to external voltage source via second pull-up resistor, described watchdog reset end is successively via second terminating resistor, the source electrode of first switch element, drain electrode is connected to slave computer, and the grid of described first switch element is connected to the software upgrading control end.
3. online software upgrade as claimed in claim 2 and reset control circuit is characterized in that: described reset control circuit also comprises manual reset switch, and described hand-reset end is also via described manual reset switch ground connection.
4. as claim 2 or 3 described online software upgrade and reset control circuits, it is characterized in that: described upgrading control circuit comprises the 3rd pull-up resistor, the 4th pull-up resistor, first pull down resistor, manual upgrading switch, second switch unit and the 3rd switch element, the 3rd pull-up resistor is connected between software upgrading control end and the external voltage source, external voltage source is connected to the grid of first switch element by the 3rd pull-up resistor, manually upgrading switch one end is connected to the grid of first switch element, other end ground connection, the bootmode pin also passes through the drain electrode of second switch unit successively, source ground, the grid of second switch unit is via the first pull down resistor ground connection and via the drain electrode of the 3rd switch element, source ground, the drain electrode of the 3rd switch element also is connected to voltage source by the 4th pull-up resistor, the grid of the 3rd switch element is connected to master system, is used to receive the control signal of master system.
5. online software upgrade as claimed in claim 4 and reset control circuit is characterized in that: described first switch element, second switch unit and the 3rd switch element are N type metal-oxide-semiconductor field effect ts.
6. online software upgrade as claimed in claim 4 and reset control circuit is characterized in that: described first switch element, second switch unit and the 3rd switch element are and door or phase inverter.
7. online software upgrade as claimed in claim 4 and reset control circuit, it is characterized in that: the upgrading control circuit comprises the 3rd pull-up resistor, build-out resistor and the switch of manually upgrading, described the 3rd pull-up resistor is connected between software upgrading control end and the external voltage source, described manual upgrading switch one end is connected to the grid of first switch element, other end ground connection, described bootmode pin also is connected to master system via build-out resistor.
8. online software upgrade and reset controlling system, it is characterized in that: comprise master system, lower computer system, reset control circuit, upgrading control circuit and download debugging interface, lower computer system comprises the slave computer central processing unit, described master system connects described slave computer central processing unit by serial line interface, described reset control circuit connects described slave computer central processing unit, described upgrading control circuit connects described slave computer central processing unit and described master system, and described download debugging interface connects described slave computer central processing unit.
9 online software upgrade as claimed in claim 8 and reset controlling systems, it is characterized in that: described slave computer central processing unit comprises software upgrading control end and reseting controling end, described upgrading control circuit is connected to described software upgrading control end, and described reset control circuit is connected to described reseting controling end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010200567067U CN201754276U (en) | 2010-01-19 | 2010-01-19 | On-line software upgrade and reset control circuit and system thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010200567067U CN201754276U (en) | 2010-01-19 | 2010-01-19 | On-line software upgrade and reset control circuit and system thereof |
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| CN201754276U true CN201754276U (en) | 2011-03-02 |
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| CN2010200567067U Expired - Lifetime CN201754276U (en) | 2010-01-19 | 2010-01-19 | On-line software upgrade and reset control circuit and system thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101751369B (en) * | 2010-01-19 | 2012-10-03 | 深圳市普博科技有限公司 | Online software updating and resetting control circuit and system thereof |
| CN103324544A (en) * | 2013-06-20 | 2013-09-25 | 郑州宇通客车股份有限公司 | Online debugging circuit for single chip microcomputer system with external watchdog |
-
2010
- 2010-01-19 CN CN2010200567067U patent/CN201754276U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101751369B (en) * | 2010-01-19 | 2012-10-03 | 深圳市普博科技有限公司 | Online software updating and resetting control circuit and system thereof |
| CN103324544A (en) * | 2013-06-20 | 2013-09-25 | 郑州宇通客车股份有限公司 | Online debugging circuit for single chip microcomputer system with external watchdog |
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