Help using NI-845x SPI and DIO in MatLab

I am trying use the SPI interface as well as control the DIO pins. So far I have to connect to the NI box 2 seperate ways to make it work. I found an example that supposedly does this but it doesn't work.

device = ni845x('NI box serial');
spi_obj = spi(device, 0, 0);

I get the following error regarding the vendor???

Error using spi

Expected input number 1, vendorName, to match one of these values:

'aardvark', 'ni845x'

The input did not match any of the valid values.

Error in stest (line 17)

spi_obj = spi(device, 0, 0)

Answer 1

[Walter Roberson]

spi_obj = spi('ni845x', 0, 0);

[Erik]

I can connect that way but then I dont have access to the DIO pins, only the SPI pins

[Walter Roberson]

Well, it is currently not supported to call spi() given a ni845x() device.

Consider the possibility of using

spi_obj = spi('ni845x', 0, 0);
connect(spi_obj);

device = ni845x('NI box serial');
configureDigitalPin(device,"P0.0","input");

num_values = 4;
value1 = read(spi_obj, num_values);
value2 = readDigitalPin(controller,"P0.0");

[Erik]

i get this error on line 3 (device = ni845x('NI box serial'))

Failed to create controller object. Unable to find controller with specified serial number or specified serial number is invalid.

[Walter Roberson]

'NI box serial' has to be the serial number of the device.

If you only have one ni845x then

device = ni845x();

[Erik]

this what I got before

Failed to create controller object. Connection to controller with the specified serial number already exists.

[Walter Roberson]

It just might be the case that you can either establish an spi connection or a DIO connection. I do not know. I do not have any ni845x to experiment with.

I can say that spi() has no option to accept a device returned from ni845x()

I suggest that you open a support case.

[Erik]

Thats what I kinda thought. Thanks for you time