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TPC-650H User Manual

18

Appendix B Watchdog Timer

Programming

B.1 Overview

The TPC-650H watchdog timer can be used to monitor system software
operation and take corrective action if the software fails to function after
the programmed period. This section describes the operation of the
watchdog timer, and how to program it.
The watchdog timer is built into the super I/O controller W83627HF. It
provides the following functions for user programming:
•  Can be enabled and disabled by user's program.
•  Timer can be set from 1 to 255 seconds or 1 to 255 minutes.
•  Generates an interrupt or resets signal if the software fails to reset the

timer after time-out.

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Содержание TPC-650H

Страница 1: ...TPC 650H 5 7 VGA TFT LCD Intel Atom Touch Panel Computer User Manual...

Страница 2: ...prior written permission of Advantech Co Ltd Information provided in this manual is intended to be accurate and reli able However Advantech Co Ltd assumes no responsibility for its use nor for any inf...

Страница 3: ...lacement materials service time and freight Please consult your dealer for more details If you think you have a defective product follow these steps 1 Collect all the information about the problem enc...

Страница 4: ...used in accordance with the instruction manual may cause harmful interference to radio communications Operation of this equipment in a residential area is likely to cause harmful interference in whic...

Страница 5: ...cord so that people cannot step on it Do not place anything over the power cord 10 All cautions and warnings on the equipment should be noted 11 If the equipment is not used for a long time disconnec...

Страница 6: ...NG TO THE MANUFACTURER S INSTRUCTIONS The sound pressure level at the operator s position according to IEC 704 1 1982 is no more than 70 dB A DISCLAIMER This set of instructions is given according to...

Страница 7: ...igure 2 3 Power Connector and Power Lines 9 Figure 2 4 Power Receptor Button Pin Assignment 9 Chapter 3 Features in Windows XP Embedded 12 3 1 EWF 12 3 2 HORM 13 Appendix A Serial Port Settings 16 A 1...

Страница 8: ...TPC 650H User Manual viii C 2 6 IOCTL_WDT_REBOOT 31 C 3 Examples 32...

Страница 9: ...CHAPTER 1 General Information This chapter gives background infor mation on TPC 650H Sections include Introduction Specifications I O Ports Arrangement Panel Mounting Exploded Diagrams Dimensions Cuto...

Страница 10: ...t to circulate inside the equipment Bright Display The TFT LCD display suits industrial demands for clear interfaces Web based Terminal Solution TPC 650H is designed as a Web based terminal solution s...

Страница 11: ...specifications Watchdog Timer W83627 watchdog timer 1 6 second timeout period 1 2 2 I O Ports 2 serial ports RS 232 COM1 COM2 1 RJ 45 Ethernet port 2 USB 2 0 Ports compliant with USB 1 0 and 1 1 1 2 3...

Страница 12: ...D Backlight Life Time 50 000 hours 1 4 Touchscreen Specifications Touch Type Resistive Base Glass Construction Tempered Glass Resolution 1024 x 1024 Light Transmission 75 typical Controller USB Interf...

Страница 13: ...position before installing TPC 650H into the panel opening 2 Install the TPC 650H into the panel opening 3 Find the eight clampers and eight long screws in the accessory pack Hook the clampers to the...

Страница 14: ...t Weight 1 43 kg without HDD Dimensions W x H x D 195 x 148 x 58 mm 7 68 x 5 83 x 2 28 Cutout 189 1 x 142 1 mm suggested Figure 1 3 Dimensions 188 1 188 1 141 1 141 1 70 5 70 5 58 58 6 6 195 195 148 1...

Страница 15: ...2 CHAPTER 2 System Setup This chapter provides a brief explana tion for operating TPC 650H...

Страница 16: ...tem Setup You can easily get TPC 650H started by following the below steps Step 1 Unpack the TPC 650H package Check the packing list at the beginning of this manual to make sure all items have been in...

Страница 17: ...Connect the power connector to the 24 VDC power lines The power lines can either be of some power adapter or in house power source Figure 2 3 Power Connector and Power Lines Figure 2 4 Power Receptor...

Страница 18: ...ur accessory box The various drivers in the CD ROM disc have their own text files which help users install the drivers and understand their functions These files are a very useful supplement to the in...

Страница 19: ...2 CHAPTER 3 Features in Windows XP Embedded Sections include EWF HORM Advantech Utilities...

Страница 20: ...access The benefits are as the following Write protect one or more partitions on your system Enable read only media such as CD ROM or flash to boot and run Prolong the lifespan of write sensitive stor...

Страница 21: ...en system reboot automatically Open those software that customers want to directly use after system resume from hibernation Hibernate via Advantech HORM utility Please Click Start Menu All Programs Ad...

Страница 22: ...TPC 650H User Manual 14...

Страница 23: ...2 APPENDIX A Serial Port Settings...

Страница 24: ...TPC 650H User Manual 16 Appendix A Serial Port Settings A 1 COM1 COM2 Connector Definition Pin Signal 1 NDCD 2 NRX 3 NTX 4 NDTR 5 GND 6 NDSR 7 NRTS 8 NCTS 9 NRI 6 5 9 1...

Страница 25: ...2 APPENDIX B Watchdog Timer Programming...

Страница 26: ...programmed period This section describes the operation of the watchdog timer and how to program it The watchdog timer is built into the super I O controller W83627HF It provides the following function...

Страница 27: ...re Unlock W83627 Unlock W83627 Select register of watchdog timer Select register of watchdog timer Enable the function of the watchdog timer Enable the function of the watchdog timer Use the function...

Страница 28: ...Write 1 to bit 3 set minute as counting unit F6 hex write 0 stop timer default 01 FF hex The amount of the count in seconds or minutes depends on the value set in register F5 hex This number decides h...

Страница 29: ...Mov al 07h Select registers of watchdog timer Out dx al Inc dx Mov al 08h Out dx al Dec dx Enable the function of watchdog timer Mov al 30h Out dx al Inc dx Mov al 01h Out dx al Dec dx Set second as...

Страница 30: ...mer and set 5 minutes as timeout interval Mov dx 2eh unlock W83627H Mov al 87h Out dx al Out dx al Mov al 07h Select registers of watchdog timer Out dx al Inc dx Mov al 08h Out dx al Dec dx Enable the...

Страница 31: ...v al 0f6h Out dx al Inc dx Mov al 5 Out dx al Dec dx lock W83627HF Mov al 0aah Out dx al 3 Enable watchdog timer to be reset by mouse Mov dx 2eh unlock W83627H Mov al 87h Out dx al Out dx al Mov al 07...

Страница 32: ...e reset by mouse Mov al 0f7h Out dx al Inc dx In al dx Or al 80h Out dx al Dec dx lock W83627HF Mov al 0aah Out dx al 4 Enable watchdog timer to be reset by keyboard Mov dx 2eh unlock W83627H Mov al 8...

Страница 33: ...imer to be strobed reset by keyboard Mov al 0f7h Out dx al Inc dx In al dx Or al 40h Out dx al Dec dx lock W83627HF Mov al 0aah Out dx al 5 Generate a time out signal without timer counting Mov dx 2eh...

Страница 34: ...function of watchdog timer Mov al 30h Out dx al Inc dx Mov al 01h Out dx al Dec dx Generate a time out signal Mov al 0f7h Out dx al Write 1 to bit 5 of F7 register Inc dx In al dx Or al 20h Out dx al...

Страница 35: ...2 APPENDIX C Watchdog Timer Programming on WinCE...

Страница 36: ...urces Then programmers can use DeviceIOControl functions to enable disable the watchdog timer The introduction below includes DeviceIOControl the definition of the parameter and an example C 1 Device...

Страница 37: ...wIoControlCode parameter specifies an operation that does not require input data nInBufferSize in Size in bytes of the buffer pointed to by lpInBuffer lpOutBuffer out Long pointer to a buffer that rec...

Страница 38: ...lpOutBuffer unused nOutBufferSize unused C 2 2 IOCTL _WDT_DISABLE Disables the watchdog time of your application lpInBuffer unsed nInBufferSize unused lpOutBuffer unused nOutBufferSize unused C 2 3 I...

Страница 39: ...watchdog time setting lpInBuffer The DWORD points to your watchdog time setting The watchdog time setting is just a number 0 means 2 seconds 1 means 5 seconds 2 means 10 seconds 3 means 15 seconds 4 m...

Страница 40: ...compatibility reasons you can define IOCTL as below define IOCTL_WDT_ENABLE 0x1001 define IOCTL_WDT_DISABLE 0x1002 define IOCTL_WDT_STROBE 0x1003 define IOCTL_WDT_GETTIMEOUT 0x1004 define IOCTL_WDT_SE...

Страница 41: ...T nIndex sizeof nIndex NULL 0 dwTemp NULL Enable the Watchdog timer DeviceIoControl m_hWDT IOCTL_WDT_ENABLE NULL 0 NULL 0 dwTemp NULL While 1 do your job here Sleep 8000 DeviceIoControl m_hWDT IOCTL_W...

Страница 42: ...TPC 650H User Manual 34...

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