没有合适的资源?快使用搜索试试~ 我知道了~
首页Quectel_OpenCPU_Watchdog_Application_Note_V1.0
资源详情
资源评论
资源推荐

OpenCPU Watchdog
Application Note
GSM/GPRS Module Series
Rev. OpenCPU_Watchdog_Application_Note_V1.0
Date: 2014-11-14
www.quectel.com

GSM/GPRS Module Series
OpenCPU Watchdog Application Note
OpenCPU_Watchdog_Application_Note Confidential / Released 1 / 17
Our aim is to provide customers with timely and comprehensive service. For any
assistance, please contact our company headquarters:
Quectel Wireless Solutions Co., Ltd.
Office 501, Building 13, No.99, Tianzhou Road, Shanghai, China, 200233
Tel: +86 21 5108 6236
Mail: info@quectel.com
Or our local office, for more information, please visit:
http://www.quectel.com/support/salesupport.aspx
For technical support, to report documentation errors, please visit:
http://www.quectel.com/support/techsupport.aspx
GENERAL NOTES
QUECTEL OFFERS THIS INFORMATION AS A SERVICE TO ITS CUSTOMERS. THE INFORMATION
PROVIDED IS BASED UPON CUSTOMERS’ REQUIREMENTS. QUECTEL MAKES EVERY EFFORT
TO ENSURE THE QUALITY OF THE INFORMATION IT MAKES AVAILABLE. QUECTEL DOES NOT
MAKE ANY WARRANTY AS TO THE INFORMATION CONTAINED HEREIN, AND DOES NOT ACCEPT
ANY LIABILITY FOR ANY INJURY, LOSS OR DAMAGE OF ANY KIND INCURRED BY USE OF OR
RELIANCE UPON THE INFORMATION. ALL INFORMATION SUPPLIED HEREIN IS SUBJECT TO
CHANGE WITHOUT PRIOR NOTICE.
COPYRIGHT
THIS INFORMATION CONTAINED HERE IS PROPRIETARY TECHNICAL INFORMATION OF
QUECTEL CO., LTD. TRANSMITTABLE, REPRODUCTION, DISSEMINATION AND EDITING OF THIS
DOCUMENT AS WELL AS UTILIZATION OF THIS CONTENTS ARE FORBIDDEN WITHOUT
PERMISSION. OFFENDERS WILL BE HELD LIABLE FOR PAYMENT OF DAMAGES. ALL RIGHTS
ARE RESERVED IN THE EVENT OF A PATENT GRANT OR REGISTRATION OF A UTILITY MODEL
OR DESIGN.
Copyright © Quectel Wireless Solutions Co., Ltd. 2014. All rights reserved.
Quectel
Confidential

GSM/GPRS Module Series
OpenCPU Watchdog Application Note
OpenCPU_Watchdog_Application_Note Confidential / Released 2 / 17
About the Document
History
Revision
Date
Author
Description
1.0
2014-11-14
Stanley YONG
Initial
Quectel
Confidential

GSM/GPRS Module Series
OpenCPU Watchdog Application Note
OpenCPU_Watchdog_Application_Note Confidential / Released 3 / 17
Contents
About the Document ................................................................................................................................... 2
Contents ....................................................................................................................................................... 3
Table Index ................................................................................................................................................... 4
Figure Index ................................................................................................................................................. 5
1 Introduction .......................................................................................................................................... 6
2 Principle of OpenCPU Watchdog ....................................................................................................... 7
2.1. Hardware Reference Design ..................................................................................................... 7
2.2. Software Principle ................................................................................................................... 10
2.3. Duty Time and Feed Watchdog ............................................................................................... 11
3 API Functions ..................................................................................................................................... 12
3.1. QI_WTD_Init ............................................................................................................................ 12
3.2. QI_WTD_Start ......................................................................................................................... 13
3.3. Ql_WTD_Feed ........................................................................................................................ 13
3.4. Ql_WTD_Stop ......................................................................................................................... 14
4 Program Watchdog ............................................................................................................................ 15
4.1. For Single Task App ................................................................................................................ 15
4.2. For Multitasks App ................................................................................................................... 16
5 Appendix A Reference ....................................................................................................................... 17
Quectel
Confidential
剩余17页未读,继续阅读















安全验证
文档复制为VIP权益,开通VIP直接复制

评论0