connect to attendance machine

[alaamokhtar]

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I have an attendance machine and SDK for it

I use the next command for getting attendance log

ip="10.0.0.244"
machineno=1
d11=0
this.Parent.olecontrol1.setipAddress(@ip,5005,0)
MESSAGEBOX(this.Parent.olecontrol1.openCommPort(machineno))
this.Parent.olecontrol1.enableDevice(machineno,1)

MESSAGEBOX(this.Parent.olecontrol1.readgeneralLogCount(machineno,@d11))
MESSAGEBOX(d11)
MESSAGEBOX(this.Parent.olecontrol1.readgeneralLogData(@machineno))

the first messagebox return true

and the second return true

the third messagebox return the no of logs (300 logs)

but the third return false

so I can't get the 300 logs to my tables


when I use get error function and I get

error number =3

from ocx manual i know that error 3 mean An error has happened to receipt of the data

 

[Olaf Doschke]

Even if we knew which attendance machine you have, we couldn't use it's SDK without having the hardware. The ole control reports an error in retrieving data, ask the machine vendor about what should be done. I'd assume configuration, maybe another license. It's not a FoxPro issue at all and there's nothing further we could do to help, can we?

My question would be, why you pass in machine no by ref into the readgeneralLogData method. A parameter is only passed by ref, if the method could change it (in/out) parameter, which seems weird if you rea the log of a certain machine, the machine no wouldn't change, would it?

Maybe you rather let some developer work for you and create a foxpro (function) library to wrap that SDK for your easier use. The developer would need hands on the device, most probably, and of course SDK manual etc.

Bye, Olaf.

 

[Mike Lewis]

Yes, I agree with Olaf. This is not a Foxpro issue. You will need to take it up with the support people of the hardware vendor.

In any case, your question is not particularly clear. For example, you wrote:

the third messagebox return the no of logs (300 logs)
but the third return false

It can't return both a number and false. That doesn't make sense. In general, messageboxes never return false. They return an integer which indicates which button has been clicked. But as that's not relevant in this case, I suspect you mean something different. You will need to clarify your question if you want a useful answer.

Mike





__________________________________
Mike Lewis (Edinburgh, Scotland)

Visual FoxPro articles, tips and downloads

 

[Olaf Doschke]

Yes Mike,

I guess 300 is returned via d11 in the call of readgeneralLogCount(machineno,@d11), the second messagebox then shows this 300. Then readgeneralLogData should return the net log data, instead of just the count, but that fails. Maybe because of config, maybe 300 log entries are already too much to read in one go. Whatever, several things are lost in translation here, not only regarding programming languages.

Bye, Olaf.

 

[Mike Lewis]

... several things are lost in translation here, not only regarding programming languages.

Neatly put.

Mike



__________________________________
Mike Lewis (Edinburgh, Scotland)

Visual FoxPro articles, tips and downloads

 

[GriffMG]

The first thing I would do is check that the attendance machine is on the same subnet as your VFP program, otherwise
you will probably be getting rubbish.

Secondly you are passing by reference to the control:

@d11 and @machineno

Which IMPLIES that the control is expected to update the two values perhaps.

So is it possible the second function should be returning a string into a buffer
of some sort?

Perhaps like this:

m.LogCount = this.Parent.olecontrol1.readgeneralLogCount(machineno,@d11)
m.LogDataBuffer= space(m.LogCount * 255)
this.Parent.olecontrol1.readgeneralLogData(machineno,@LogDataBuffer)
? m.LogDataBuffer

But, with just a tiny bit of googling I found this - which might point you in the right direction

http://www.atbcode.com/code/sc0y5e81-490075

It's all in pascal, for delphi presumably - but I suspect this is the kit you have and this has a number of functions
to help you read it.




Regards

Griff
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