VCCdio Set Voltage

[max-zipfl]

Hello,

I have the MODEL PCIE-ADIO16-16F card and am trying to get it up and running.
I was able to read the card's voltages, so that's good.

However, I have not found a way to adjust the VCCdio voltage at pin 68 (it currently stays at 1.65 V).
How can I set this Voltage to for example 5.0V?

Also, is there a convenient wrapper for the Linux driver like the one in the Windows version (AIOAIO.dll)?

Thank you very much

[jdolanIV]

The apcilib.h has functions that wrap the reads and writes. https://github.com/accesio/APCI/blob/master/apcilib/apcilib.h
ACCES's PCI Linux support is limited to more direct register access and IRQ handling. There is a project to bring it closer to parity with Windows, but that is in early stages.

If you don't need interrupts, you can use any API that gets you reads and writes to the card's address space and skip the APCI driver.

I can just go by what is in the manual. https://accesio.com/MANUALS/PCIe-ADIO16-16F.pdf

The manual says that pin is 68 "Watchdog Active". Are you maybe looking for pin 34?

There is a note on page 3. Do you have the feature mentioned?

1
: VCCio pin outputs fused 3.3VDC @ 0.5A on standard models.
-VCCIO option converts VCCio into a user input between 1.65VDC
and 5.5VDC.

Looking at Chapter 8, I think what it's telling me is that VCCdio is fixed at 1.65V unless you have the -VCCIO option. Then the pin becomes an input that is used as a reference voltage for DIO.

Let me know if this helps or if you still have questions. We're here to help get it working.

-- Jay