CN104503860A - Embedded device low-power-consumption watchdog utilization method - Google Patents
Embedded device low-power-consumption watchdog utilization method Download PDFInfo
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- CN104503860A CN104503860A CN201410854075.6A CN201410854075A CN104503860A CN 104503860 A CN104503860 A CN 104503860A CN 201410854075 A CN201410854075 A CN 201410854075A CN 104503860 A CN104503860 A CN 104503860A
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- house dog
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Abstract
The invention belongs to a watchdog utilization method and particularly relates to an embedded device low-power-consumption watchdog utilization method. The method comprises the steps of A, setting watchdog time to be n second during the normal operation of the device; B, calculating the longest time of sleep, which is m seconds, before the program runs to enter the low-power-consumption stop mode; C, resetting counts of the watchdog, and resetting the watchdog time to be longer than m seconds; D, enabling the watchdog to enter sleep and wake up after the longest time m seconds or shorter than m seconds; E, setting the watchdog time to operate normally for n seconds after waking up; F, ending. By the aid of the method, the problem that the overall running effect is affected due to automatic resetting of the device when the device enters the low-power-consumption stop mode and the device stop mode time is longer than n seconds is solved.
Description
Technical field
The invention belongs to a kind of house dog using method, particularly relate to a kind of embedded device low-power consumption house dog using method.
Background technology
Existing embedded device house dog set of time is n second, and n will carry out a dog feeding operation within second, otherwise device reset is restarted.When equipment enters low-power consumption stop mode, at this moment the time of equipment stop mode can only be less than n second, otherwise when the equipment stop mode time is greater than n second, equipment can reset and restart.The overall operation effect of equipment can be affected like this, have very large defect and limitation.
Summary of the invention
Technical matters to be solved by this invention is: a kind of embedded device low-power consumption house dog using method---solve when equipment enters low-power consumption stop mode, the equipment stop mode time is when being greater than n second, equipment can reset and restart, and affects the problem of the overall operation effect of equipment.
The using method of house dog when the present invention is achieved in that a kind of embedded device low-power consumption, is characterized in that: the method comprises the following steps:
A. the time arranging house dog during normal operation is n second;
B., before program runs to and enters low-power consumption stop mode, the maximum duration calculating this time sleep is m second;
C. the counting of house dog resets, and resets the time of house dog for being greater than m second;
D. enter sleep, the longest m wakes up after second, or is less than m and wakes up second;
E. after waking up, the set of time of house dog runs n second for normal;
F. terminate.
Further technical scheme of the present invention is: described method can also be:
The maximum duration that B sleeps at every turn does not need to calculate, and fixed value is m second;
The house dog time that C resets is fixed as the value being greater than m second.
Further technical scheme of the present invention is: the maximum duration m of described house dog arranges according to device hardware difference different, and the equipment low-power consumption stop mode time, m will within the maximum time of house dog.
Further technical scheme of the present invention is: arrange between n second house dog time and computing equipment low-power consumption stop mode maximum duration, run other flow processs.
Further technical scheme of the present invention is: after the method circulation N time, terminates.
The invention has the beneficial effects as follows: the present invention can before equipment enters low-power consumption stop mode, according to the time demand of equipment equipment low-power consumption stop mode, what reset house dog feeds the dog time, such equipment would not be restarted because reason for this reason resets, low-power consumption and house dog can be good at coordinative role, the defect before elimination and limitation.
Accompanying drawing explanation
The using method of house dog during a kind of embedded device low-power consumption of Fig. 1 the present invention;
Embodiment
Below in conjunction with the drawings and specific embodiments, the present invention is further detailed explanation:
Embodiment 1
As shown in Figure 1, the using method of house dog when the present invention is achieved in that a kind of embedded device low-power consumption, the method comprises the following steps:
A. the time arranging house dog during normal operation is n second;
B., before program runs to and enters low-power consumption stop mode, the maximum duration calculating this time sleep is m second;
C. the counting of house dog resets, and resets the time of house dog for being greater than m second;
D. enter sleep, the longest m wakes up after second, also can be less than m and wake up second;
E. after waking up, the set of time of house dog runs n second for normal;
F. terminate.
When house dog normally runs, setting-up time is n second, enter low-power consumption stop mode, computing equipment low-power consumption stop mode maximum duration, prevent equipment low-power consumption stop mode overlong time from making equipment restart reset, when equipment enters low-power consumption stop mode, detect the maximum duration of equipment low-power consumption stop mode, the counting of house dog resets afterwards, resetting the house dog time is greater than the equipment low-power consumption stop mode time, house dog stops how long being all within the equipment low-power consumption stop mode time in low-power consumption, also be within the timing of house dog, can not cause house dog because low-power consumption stops causing the reset of equipment to restart.
Embodiment 2
The using method of house dog during a kind of embedded device low-power consumption of the present invention can also be following steps:
A. the time arranging house dog during normal operation is n second;
The maximum duration that B sleeps at every turn does not need to calculate, and fixed value is m second;
The house dog time that C resets also can be fixed as the value being greater than m second;
D. enter sleep, the longest m wakes up after second, also can be less than m and wake up second;
E. after waking up, the set of time of house dog runs n second for normal;
F. terminate.
As described in embodiment 1-2, a kind of embedded device low-power consumption is the using method of house dog, and the maximum duration m of described house dog arranges according to device hardware difference different, and the equipment low-power consumption stop mode time, m will within the maximum time of house dog.This maximum duration does not have account form, and can be understood as the length of one's sleep that equipment needs, can be fixing also can not fixing.
Be understandable that, for those of ordinary skills, can be equal to according to technical scheme of the present invention and inventive concept thereof and replace or change, and all these change or replace the protection domain that all should belong to the claim appended by the present invention.
Claims (5)
1. the using method of house dog during embedded device low-power consumption, is characterized in that: the method comprises the following steps:
A. the time arranging house dog during normal operation is n second;
B., before program runs to and enters low-power consumption stop mode, the maximum duration calculating this time sleep is m second;
C. the counting of house dog resets, and resets the time of house dog for being greater than m second;
D. enter sleep, the longest m wakes up after second, or is less than m and wakes up second;
E. after waking up, the set of time of house dog runs n second for normal;
F. terminate.
2. house dog using method during a kind of embedded device low-power consumption according to claim 1, is characterized in that: described method step B and step C is improved to:
The maximum duration that B sleeps at every turn does not need to calculate, and fixed value is m second;
The house dog time that C resets is fixed as the value being greater than m second.
3. according to house dog using method during a kind of embedded device low-power consumption described in claim 1 or 2,
It is characterized in that: the maximum duration l of described house dog arranges and determines according to device hardware, and equipment low-power consumption stop mode maximum duration m is within the maximum time of house dog.
4. house dog using method during a kind of embedded device low-power consumption according to claim 1 and 2, is characterized in that: between steps A and step B, operational outfit normal flow.
5. a kind of embedded device low-power consumption house dog using method according to claim 1 and 2, is characterized in that: after the method circulation N time, terminates.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410854075.6A CN104503860A (en) | 2014-12-31 | 2014-12-31 | Embedded device low-power-consumption watchdog utilization method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410854075.6A CN104503860A (en) | 2014-12-31 | 2014-12-31 | Embedded device low-power-consumption watchdog utilization method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104503860A true CN104503860A (en) | 2015-04-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410854075.6A Pending CN104503860A (en) | 2014-12-31 | 2014-12-31 | Embedded device low-power-consumption watchdog utilization method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107851050A (en) * | 2015-07-08 | 2018-03-27 | 微软技术许可有限责任公司 | The WatchDog Timer of high availability and energy efficient |
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| US5761414A (en) * | 1995-12-06 | 1998-06-02 | Mitsuba Corporation | Method for detecting execution errors of a microprocessor |
| CN2599652Y (en) * | 2002-12-04 | 2004-01-14 | 华为技术有限公司 | Entrance guard dog checking circuit |
| CN1815449A (en) * | 2005-02-01 | 2006-08-09 | 艾默生网络能源有限公司 | Watchdog control method |
| CN101171563A (en) * | 2005-05-10 | 2008-04-30 | Nxp股份有限公司 | Sleep watchdog circuit for asynchronous digital circuits |
| CN101711052A (en) * | 2009-11-03 | 2010-05-19 | 深圳和而泰智能控制股份有限公司 | Method for reducing stand-by power consumption of wireless transceiver system and system thereof |
| CN103676728A (en) * | 2013-11-27 | 2014-03-26 | 奇瑞汽车股份有限公司 | Watchdog circuit system for electronic control unit of automobile |
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2014
- 2014-12-31 CN CN201410854075.6A patent/CN104503860A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5761414A (en) * | 1995-12-06 | 1998-06-02 | Mitsuba Corporation | Method for detecting execution errors of a microprocessor |
| CN2599652Y (en) * | 2002-12-04 | 2004-01-14 | 华为技术有限公司 | Entrance guard dog checking circuit |
| CN1815449A (en) * | 2005-02-01 | 2006-08-09 | 艾默生网络能源有限公司 | Watchdog control method |
| CN101171563A (en) * | 2005-05-10 | 2008-04-30 | Nxp股份有限公司 | Sleep watchdog circuit for asynchronous digital circuits |
| CN101711052A (en) * | 2009-11-03 | 2010-05-19 | 深圳和而泰智能控制股份有限公司 | Method for reducing stand-by power consumption of wireless transceiver system and system thereof |
| CN103676728A (en) * | 2013-11-27 | 2014-03-26 | 奇瑞汽车股份有限公司 | Watchdog circuit system for electronic control unit of automobile |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107851050A (en) * | 2015-07-08 | 2018-03-27 | 微软技术许可有限责任公司 | The WatchDog Timer of high availability and energy efficient |
| CN107851050B (en) * | 2015-07-08 | 2021-04-09 | 微软技术许可有限责任公司 | Device with watchdog timer and method for operating watchdog timer |
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Application publication date: 20150408 |
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