BERKSHIRE PRODUCTS PC Watchdog Manual de usuario

USB

PC Watchdog

Hardware Manual

BERKSHIRE PRODUCTS, INC

Phone: 770-271-0088

http://www.berkprod.com/

Rev: 2.30

PC Watchdog is a re istered trademark of Berkshire Products

Table of Contents

1. INTRODUCTION ..................................................................................................................................... 1

2. OPERATION ............................................................................................................................................ 3

3. DIP SWITCH SETTINGS ........................................................................................................................ 5

3.1 MODE SWITCHES - SW1 & SW2 ................................................................................................................... 5

3.2 SWITCH #1 - PASSIVE MODE ........................................................................................................................... 5

3.3 SWITCH #2 - ACTIVE MODE ............................................................................................................................ 5

3.4 SWITCH #3 - BUZZER DISABLE ........................................................................................................................ 5

3.5 SWITCH #4 - OVER- TEMP RESET .................................................................................................................... 6

3.6 SWITCH #5 - POWER ON DELA (POD) ......................................................................................................... 6

3.7 SWITCHES #6-8 - WATCHDOG DELA TIME ..................................................................................................... 6

4. SUPPLIED COMPONENTS ................................................................................................................... 7

4.1 INSTALLATION OF SUPPLIED COMPONENTS ........................................................................................................ 7

4.2 USB INTERNAL CONNECTION HEADER ........................................................................................................... 8

4.2.1 INTERNAL MOUNTING .................................................................................................................................... 8

4.3 DRIVER INFORMATION .................................................................................................................................... 8

4.4 AUXILIAR RELA ........................................................................................................................................ 9

4.5 EXTERNAL DIGITAL INPUT (REV-C BOARDS) .................................................................................................. 9

5. LEDS AND BUZZER ............................................................................................................................ 10

5.1 DUAL LEDS ................................................................................................................................................ 10

5.2 SMT USB ACTIVE ..................................................................................................................................... 10

5.3 BUZZER ....................................................................................................................................................... 10

6. WATCHDOG PROGRAMS, DRIVERS AND API ............................................................................ 11

6.1 BPI_WDOG_CONFIG PROGRAM .................................................................................................................. 11

6.2 BPI_WDOG_TICKLE PROGRAM ................................................................................................................... 11

6.3 DRIVERS ...................................................................................................................................................... 11

6.4 DLL & SAMPLE CODE ................................................................................................................................ 11

6.5 WEB SITE DOWNLOADS ................................................................................................................................ 11

7. ORIGINAL DISTRIBUTION FILES .................................................................................................. 12

8. APPENDIX A - SPECIFICATIONS ..................................................................................................... 13

9. APPENDIX B - WARRANT ............................................................................................................... 14

10. APPENDIX C - SERVICE AND TECH SUPPORT .......................................................................... 15

10.1 CALLING TECH SUPPORT ............................................................................................................................. 15

10.2 PRODUCT RETURNS ..................................................................................................................................... 15

11. APPENDIX D - AGENC APPROVALS ........................................................................................... 16

11.1 FCC - CLASS A ........................................................................................................................................ 16

11.2 CE ........................................................................................................................................................... 16

1 Introduction

The USB PC Watchdog i an internal device that i u ed to monitor a PC in order to en ure maximum

y tem availability. It ha the following feature :

•Connect to USB port on a PC running Win98, ME, 2000, XP, Vi ta, Win7 including 64-Bit

ver ion .

•Receive power from USB bu .

•Watchdog timer that can be et from 5 econd to 1 hour via DIP witch or 1 econd to 18 hour via

oftware control.

•Monitor the PC USB bu for line activity in the pa ive mode.

•Can be u ed right from the box without any upport program .

•Ha an on-board temp en or to detect fan failure or other over-temp condition .

•Two temperature trip point .

•Trip point can be modified by u er oftware.

•Audible alarm for the temperature trip point.

•Programmable option allow the Watchdog to hold the PC in re et after the upper trip occur .

•Al o ha an active Mode that allow a u er program to have additional control over the Watchdog.

•Two externally vi ible LED how tatu of Watchdog.

•Watchdog ha a econd relay available on an external jack to control other device uch a

triggering an alarm panel.

•New Rev-C ver ion ha u er available digital input for 0.0 to +5.0 input .

•Digital input that can be u ed a external watchdog “tickle” or for edge detection.

•Programmable power-on delay to allow the PC to complete it initialization equence.

•Non-Volatile memory to tore operating parameter .

•Eight byte of non-volatile memory re erved for u er data to implement imple oftware protection

•New: non-volatile memory option to allow low temperature trip point .

The late t ver ion of all manual and ample code can be found on our ite at:

http://www.berkprod.com/

If you have any que tion , correction , or feedback about thi manual plea e contact u at:

http://www.berkprod.com/Other_Page /Contact_U .a px

2 Operation

Thi device i de igned to monitor PC u ed in critical application uch a : File Server , Voice Mail

Sy tem , ISP y tem , indu trial application , etc. The idea i to make ure the PC i alway available

and running; e pecially for y tem that are not continuou ly monitored.

When the PC i powered up, or after a re et of the PC, the PC Watchdog will wait a pre et amount of

time (2.5 minute tandard) to allow the PC to complete it re et and initialization equence. Thi time

will be referred to a Power-On-Delay (POD). After thi time ha expired, the PC Watchdog will Arm

it elf and tart a watchdog timer running (u er defined time-out period). There i a DIP Switch option

to allow the Watchdog to extend thi time for PC that need additional re-boot time.

Once the Watchdog i ready to arm it elf it will check the DIP Switche and enable up to two

independent operating mode . The e mode can both be active at once. They are:

•Passive Mode – monitor the USB bu for a 32mS polling (interrupt) tran action. Plea e note that

thi mode i no longer recommended.

•Active Mode – require that the ho t communicate with the board via direct communication on a

regular ba i .

Additional DIP Switche are u ed to et the timeout period and temperature mode. If no activity i

detected in Pa ive or Active Mode by the time the Watchdog timer expire , the PC Watchdog will

tart it re et equence on the PC.

The two LED on the Watchdog are u ed for tatu indication. The top LED provide the arming tatu

of the Watchdog by varying the rate at which the LED fla he . When the Watchdog re et the PC it

will turn on the bottom LED and leave it on which provide an indication that at lea t one Watchdog

re et ha occurred, po ibly more. In Active Mode the PC can turn thi LED off and al o get a count of

the number of re et that have occurred. The bottom LED will al o fla h (on or off) once per econd for

a tenth of a econd if a Watchdog timer re et ('tickle”) event occurred in the prior econd.

Note: If you stop your application program or you reset the PC with CTL-ALT-DEL, then e sure to

disa le the Watchdog y unplugging the reset ca le or remove power y disconnecting he USB ca le.

Otherwise it may count down and reset your PC at an inopportune time!

The temperature circuit on the board will monitor the internal temperature of the PC. There are two

tandard temperature trip point available: 46°C (115°) and 56°C (133°F). At the fir t trip point the PC

Watchdog board can activate the Aux relay if the option i elected. It will al o activate an audible

alarm. At the econd trip point the PC Watchdog can optionally activate the re et relay to top the PC

from further proce ing.

There i an option to allow hifting the trip point higher via oftware control. The trip point can be

increa ed in 1°C increment up to 77°C (171°F) and 87°C (189°F).

New for Firmware 3.10 and higher:

The temperature circuit on the board can al o monitor the internal temperature of the PC for low

temperature trip point . There are two low temperature trip point available between 30°C (86°F) and

-40°C (-40°F). At the fir t trip point the PC Watchdog board will activate the Aux relay if the option i

elected. It can al o activate the buzzer. At the econd low temperature trip point the PC Watchdog can

optionally activate the re et relay to top the PC from further proce ing.

The new feature i available with a DLL function call or by u ing BPI_WDog_Config program.

3 Dip Switch Settings

All the witche are read at power up and after each time that the Watchdog re et the PC. A witch

that i DOWN i OFF and a witch that i UP i ON. The following ection cover the witch option .

Switch Description

1 Enable Passive Mode

2 Enable Active Mode

3 Disable Buzzer

4 Temperature Reset Enable

5 Po er On Delay

6-8 Watchdog Delay Time

3 1 Mode Switches - SW1 & SW2

The e two witche et the operating mode of the Watchdog. If both of the e witche are off then the

Watchdog power up in factory diagno tic mode and will not operate properly!

It i OK for one or both of the e witche to be on at one time. The Watchdog will upport both mode

together.

3 2 Switch #1 - Passive Mode

When thi mode i active the Watchdog will monitor the USB for a 32mS polling (interrupt) packet

from the ho t PC. Each packet will cau e the Watchdog to re et it timeout count. If the PC lock up

and the packet top then the Watchdog will count down to zero and re et the PC. We recommend that

you no longer u e thi option. There i a program on the CD that will “tickle” the board in Active

Mode.

3 3 Switch #2 - Active Mode

If thi witch i on the Watchdog enter command mode. Thi require that the PC end command to

the Watchdog a USB data packet to make it re et the timeout counter. Command can be ent with

the BPI_WDog_Tickle program and with a u er application program u ing the DLL.

3 4 Switch #3 - Buzzer Disable

If thi witch i on the buzzer will be di abled. The buzzer can al o be di abled with oftware option .

3 5 Switch #4 - Over- temp Reset

If thi witch i on then the Watchdog will re et and hold the re et on a PC during an over-temp

condition. The fir t trip point i 46°C (115°F) at which point the buzzer will tart to ound. The econd

trip point where the Watchdog can re et the PC i 56°C (133°F). If the Watchdog re et the PC, it will

remain in re et until the temperature drop back below 50°C (122°F). There i a oftware option to

allow hifting the trip point higher via oftware control. The trip point can be increa ed in 1°C

increment up to 77°C (171°F) and 87°C (189°F).

3 6 Switch #5 - Power On Delay (POD)

After a power up or a PC re et the Watchdog normally wait 2.5 minute to allow the PC to re-boot.

Thi time can be hortened in oftware Command Mode. Sometime the PC will require more than 2.5

minute to complete the re-boot, which can be accommodated by turning on thi witch.

In Pa ive or Active Mode the Watchdog will delay tarting the timeout counter until it " ee " the fir t

activity in either of the e mode .

** NOTE ** - Be Careful with this switch. If it is on and the PC locks up during reset then the oard

would not get “tickled” since no program would load. This would leave the PC permanently

frozen. A etter option is to store a longer POD time in non-volatile memory.

3 7 Switches #6-8 - Watchdog Delay Time

The e witche et the delay time until the watchdog re et the PC. A long a the watchdog i

receiving re-trigger pul e it will continue to re et the delay time. The etting and time are hown

below:

Switches 6-8 Delay Time Switches 6-8 Delay Time

OFF-OFF-OFF 5 Seconds ON-OFF-OFF 5 Minutes

OFF-OFF-ON 10 Seconds ON-OFF-ON 10 Minutes

OFF-ON-OFF 30 Seconds ON-ON-OFF 30 Minutes

OFF-ON-ON 1 Minutes ON-ON-ON 1 Hour

The e time can be overridden with other delay by a u er program.

4 Supplied Components

The tandard Watchdog package contain the following item :

•The USB PC Watchdog timer on a tandard PC I/O bracket.

•A USB interface cable (Internal or External type)

•A CD-ROM.

•A re et cable

4 1 Installation of Supplied Components

Perform the e tep to in tall the Watchdog:

•Locate an unu ed I/O lot in the PC. Remove the blank bracket and in tall the Watchdog.

•Make ure the Dip witche are et properly before applying power to the Watchdog ince it only

check the witche at power up and after each re et of the PC.

•Di connect the PC re et cable from the motherboard. Plug thi cable onto the J1 (J5 on Rev-B)

header labeled Reset SW in the upper left corner of the Watchdog board.

•Plug the upplied re et cable onto J2 (J4on Rev-B) labeled CPU Reset on the Watchdog board and

plug the other end onto the original re et header on the motherboard.

•Connect the External type USB cable to Ho t port on the PC or a port on a hub. Connect the other

end of the cable to the Watchdog. We recommend connecting to a primary port on the PC rather

than u ing a hub. That way you do not have to worry about the hub powering down or going into

leep mode.

•If you have an internal cable then ee next ection

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