Using NI USB 8451 to read a DC SS500 SPI Sensor

[Ristow]

Hi,

I'm trying to read a SPI sensor with the USB 8451, but i'm getting strange results. The sensor is the DC-SS500 ( http://www.sure-electronics.net/download/DC-SS500_Ver1.0_EN.pdf ),and i'm using the Labview 8.6.

The connection scheme is bellow, but i don't belive there is any problem.

http://forums.ni.com...?v=mpbl-1&px=-1

The code is attached below, and I wrote it based in "General SPI read script" example and DC-SS500 user guide.

When I do the measurement I get response 0 for the read address 0. Changing the read address, as a result I get twice the value of the address.

Anyone know what might be causing the problem?

Thanks

Read DC-SS500 SPI.vi

[Ristow]

Hi,

I'm still having problems with the interface between the NI8451 and the sensor.

Anyone have any tip?

Thanks

[okeanos]

Hi Ristow,

Just noticed this now, and don't know if you've solved the problem already, but it seems to me that you might need to bit-shift the address one bit to the right if you're getting double the address. Just a quick thought. Good luck!