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Moxa DA-683-SP-XPE [20/35] The watchdog control code walkthrough
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Watchdog Control Code
The code for controlling the watchdog/COP timer is the simplest and least-customizable of the included sample
scripts. The code itself is provided on the software DVD, under \examples\Example\C++\WatchDog\
,
and the executable file Watchdog.exe is on the software DVD\examples\Release. This sample code may
be modified to integrate the watchdog timer with specific applications
Using this code, any program may be set up so that the watchdog timer will provide a last-line failsafe against
application crashes. For instance, the DA-683 may be set up so that whenever a mission-critical application
fails the watchdog timer will send a message to a system administrator and then initiate an automatic reboot.
To test the watchdog executable, follow the steps below.
The Watchdog Control Code Walkthrough
1. If you haven’t yet, create the folder c:\programs\examples, then copy over Watchdog.exe and run
the script.
2. To keep the system from rebooting, press Enter at least once every 10 seconds, or the system will reboot
automatically.
3. To stop the watchdog, press q to exit the program.
Содержание
- Da 683 windows embedded standard 7 software manual 1
- First edition april 2014 1
- Www moxa com product 1
- Copyright notice 2
- Da 683 windows embedded standard 7 software manual 2
- Disclaimer 2
- Technical support contact information 2
- Trademarks 2
- Www moxa com support 2
- Table of contents 3
- Introduction 4
- Software components 5
- System initialization 6
- Attention 7
- Create a new user account 7
- Enabling embedded filters 8
- Enhanced write filter 9
- Overview 9
- Enabling enhanced write filter 10
- Committing data and or disabling ewf 11
- Configuring file based write filter 12
- File based write filter 12
- Overview 12
- Excluding files from fbwf protection 14
- Managing temporary files cached in the overlay 16
- Customizable sample code 17
- Sample code for customizing the da 683 18
- The dio control walkthrough 18
- The led control walkthrough 19
- C programs example 20
- The watchdog control code walkthrough 20
- Watchdog control code 20
- System recovery 21
- Overview setting up the recovery environment 22
- Recovery 22
- Step 1 prepare the usb drive 22
- Tuxboot windows 23 exe 22
- Attention 23
- F home partimag 23
- Recovery os_image 23
- Step 2 setting the bios to boot via usb 23
- F home partimag 24
- Step 3 opt create a custom system image 24
- Home partima 25
- Warning 26
- Step 4 reset bios to original state 27
- Step 5 perform a test restoration 28
- A sample code for da 683 customization 30
- Sample code for da 683 customization 30
- Include include mxdev h define di_port_number 4 define do_port_number 4 int _tmain intargc _tchar argv handle hdiodev intport_no int data intndata 0 intnret 0 int port 0 int mode 0 int n 0 tchar sin tchar smode _tprintf _t dio test program r n _tprintf _t t 0 exit program r n _tprintf _t t 1 display do di r n _tprintf _t t 2 set do value r n 31
- Sample code for digital i o control 31
- Sin _gettchar n _tstoi sin do switch n if char 1 display the di do status case 1 open device hdiodev mxdgio_open for inti 0 i di_port_number i get digital input port_no i ndata mxdgio_get_input_signal hdiodev port_no _tprintf _t di d d r n port_no ndata 31
- Copyright c moxa inc all rights reserved 33
- Include include mxdev h define led_port_number 8 int _tmain intargc _tchar argv handle hleddev intport_no int data intnled 0 intnret 0 int port 0 int mode 0 int n 0 tchar sin tchar smode _tprintf _t led test program r n _tprintf _t t 0 exit program r n _tprintf _t t 1 display led r n _tprintf _t t 2 set led value r n 33
- Sample code for led control 33
- Sin _gettchar n _tstoi sin do switch n if char 1 display the led output status case 1 open device hleddev mxgpio_open for inti 0 i led_port_number i get digital input port_no i nled mxgpio_get_data hleddev port_no _tprintf _t led d d r n port_no nled 33
- This software is distributed under the terms of the 33
- The watchdog control sample code 35
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