Driver Development Kit (DDK)

self calibration of NI PCI-6351 (X series) using the DDK

I am adapting an advanced electrochemical software running on FreeBSD which where written for the NI PCI-6251 (M-Series) for a new customer to the NI PCIe-6351 (X-Series).

The new board is installed and the X-Series DDK examples work as expected. In said EC software I got AI, AO (both with and without DMA) as well as DIO and PFI already working without major problems.

Now I am stuck in finding even the command for doing internal signal routing which would be necessary for porting the self calibration routines, which I wrote in 2009 for the PCI-6251, see here: https://forums.ni.com/t5/Driver-Development-Kit-DDK/self-calibration-of-NI-PCI-6251-M-series-using-t...

I attached to this message my working calibration sub-routines for said M series board.

Questions:

1) How would I set the internal routing?

2) What are the selectors for the positive and negative internal sources?

On the M series board I had:

typedef enum

{

noCalsrc=-1,

scxi0 = 0,

scxi1 = 1,

calRef = 2,

calSrc05 = 3,

calSrc2 = 4,

calSrc10 = 5,

gndAI = 6,

selAO = 7,

// derived selectors

calSrc01 = 8, // => calSrc05, PWMlo = 3, PWMhi = 2

calSrc02 = 9, // => calSrc05, PWMlo = 7, PWMhi = 3

calSrc1 = 10, // => calSrc2, PWMlo = 9, PWMhi = 3

calSrc5 = 11 // => calSrc10, PWMlo = 9, PWMhi = 3

} pos_src;

enum

{

noCalSrcNeg = -1,

scxiNeg0 = 0,

scxiNeg1 = 1,

Tsensor = 2, // according to a measurement series T in °C = 100*Ut - 50

senseAI = 3,

sense2AI = 4,

gndAONeg = 5,

gndAINeg = 6,

calSrc10Neg = 7

} neg_src;

How do I set a PWM source?

4) Does the eepromHelper method getSelfCalVoltRef() give the actual value of the internal reference voltage?

I am searching already for several hours in the X Series DDK and its relevant documentation and I could not find anything which is even remotely with similar to the M Series respect to internal signal routing.Many thanks in advance for any help.

Best regards

Rolf