How can i read a 8 channel 12 bit adc?

[labviewviewer]

Hello to all,

I don’t know how to get the data from a 8 channel 12bit ad card into the pc by serial port.

I want to open the serial port and to read the data out. The data consists of eight hex codes, one for every channel. The hex code must be transformed into a voltage. The 8 voltages must be stored in a file.

Maybe someone can help me or has a vi for me.

thanks for your help

[MikeS81]

Hi labviewviewer,

can you show your hex codes? Which range do you measure? You need to know how many of voltage is one step.

Mike

Message Edited by MikeS81 on 02-05-2009 11:28 AM

[labviewviewer]

Hello mike, thanks for your interesse.

The hexcode range is from 0000 to 0FFF ( 0 to 4095) and voltage from 0 to 2,5 volts.

Maybe this could help you. 

[Coq_Rouge]

If this is a product the vendor or manufactur should provide you with the transmision protocol. Use this to make an instrument driver. You may also try Google. If it is a common product, a driver will be available for downloading. If this is a custom device, some sort of a protocol also has to be specified.

Good luck

[MikeS81]

Hi labviewviewer,

you also need to know how how you receive the data. Is your data compresed or do you get 2 Byte for one value. If you know this, then you can read your bit values and multiply it with 2.5/4095.

Mike

[labviewviewer]

Hello,

the adc is from phytec AduC812

http://www.phytec.com/products/sbc/8051/phyCORE-ADuC8xx.html

[Coq_Rouge]

I took a quick look at your board. It look like you need to make a program and download it to your board. The board is like a PC with a new unformated harddisk. It is not good for anything before you put some program into it

[labviewviewer]

hello t06afre,

i think you are right. i've heared that you need a dll and a header file to make your own vi.

I got ADuC812.h but no dll.

What can i do otherwise to get the data out of the board?

[Coq_Rouge]

I do not think you can program your phytec with labview. You need some development tools. I guess phytec may help you with some advice. Send phytec a mail, or call them. But after you have programmed your phytec device, Labview will be able receive data from your unit using a serial data link.