Re: [ts-7000] Using TS-7500 SBC to collect and transfer camera data over TCP/IP

[walter marvin <>]

I think you'll have some problems with that.  Consider that the TS7500 has a cycle time of 250 MHZ. that's 10 cycles per sample, or maybe 2-4 instructions.  Further the DIO pins are on the 7500's "S-BUS" which has to be set-up before you could do it.  The number of instructions per

potential interrupt is to small to be practical, even if it weren't It would require a Linux device driver to do it. The other problem is that the TS-7500 already has all its interrupts allocated. There are two alternatives:

1) DMA

2) External buffering hardware

Option 1 is problematical, since there is no hardware support for it, and again, no drivers. Potentially a DMA based driver could be developed, but it's not a trivial task (sorry for the pun)

Option 2 requires more hardware, but is more practical. Even so, you might wind up buffering all the data, because the TS7500 would still have to handle the average data rate if the data is continuous or semi continuous.

Hope that helps

PS. I do Linux Device Drivers on the TS-7500, could you use some help here?

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From: Mike Travis <>
To: "" <>
Sent: Thursday, July 28, 2011 7:34 PM
Subject: Re: [ts-7000] Using TS-7500 SBC to collect and transfer camera data over TCP/IP

 

We actually use 3 ccd sensor blocks that digitize infrared emitting LEDs. Based on the strength and perceived position of the IR image we calculate to high accuracy a point in 3 dimensional space. The sensor block camera array is a system we've ha for years, were now trying to incorporate the SBC into the camera array. 

I just wanted to know if anyone had used 8 DIO pins to input 8 bits of data at 25 MHz before. 

Mike

On Jul 28, 2011, at 5:27 PM, walter marvin <m("yahoo.com","walter_b_marvin");" target="_blank" href="">> wrote:

 

why a ccd? why not use an ip camera? Then its an easy problem

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From: mtrav100 <m("gmail.com","mtravis100");" target="_blank" href="">>
To: m("yahoogroups.com","ts-7000");" target="_blank" href="">m("yahoogroups.com","ts-7000");" target="_blank" href="">
Sent: Thursday, July 28, 2011 6:40 PM
Subject: [ts-7000] Using TS-7500 SBC to collect and transfer camera data over TCP/IP

 

Hello,

I ordered a TS-7500 today and expect to receive it some time next week.

I'm looking to collect 8-bits of data at 25MHz (from 3 CCD sensor blocks daisy-chained) and transfer them to a computer over TCP/IP. I was planning on using the DIO pins on the expansion header to collect the data and maybe use a .C or .CPP routine to transfer the data to the computer.

I was wondering if anyone has done anything like this before and could maybe steer me in the right direction before I get the actual board and begin experimenting with it.

Thanks!
Mike

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