Instrument Control (GPIB, Serial, VISA, IVI)

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TNT4882 interrupt in 9914 compatibility mode

Hi!

I am using NI-4882-PCI card communicating with TNT4882 device installed on card. I'm using TNT4882 device in 9914 compatibility mode. Communication seems working with register polling. However, I can't get INTR line activated.

 

For ISR0 interupts I have configured IMR0 and IMR3. Following listing shows poll status from ISR0 and IMR3:

 

int0=0x90,int3=0x2
int0=0x90,int3=0x2
int0=0xd1,int3=0x2
int0=0x81,int3=0x2
int0=0x82,int3=0x2

 

I interpret these status as follows:

int0/MSB should indicate that unmasked interrupt in ISR0 is active

int3=0x2 should indicate that IMR3/TLCINT IE is set passing unmasked ISR0/ISR1/ISR2 interrupts to INTR pin.

 

What else should I configure in order to get INTR pin activated?

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Found the problem, required AUXCR register command ~dai = Disable All Interrupts => not set state.

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