I need control active high/low properties of 6509 under RLP

[yundorri]

Hi, Everyone!

I need control 6509 under Register Level Programming under Linux.

But there are no commands which can control active high/low property.

How can I set that function?

ps) when I control 6534 board, there is function which can control that function

      portPolarityA/B/C/DRegister()

[AlanArmstead]

I don't think that property really applies to the 6509 device.  Because the 6509 doesn't have handshaking or hardware-timed input or output (static i/o only) it doesn't really need an active high/low property.

-Alan A.

[yundorri]

Okay...

You mean if user send 1, then high will output and user send 0, then low will output.

so user can make any signal via 1 or 0.

Then I have a question one more. How can I setup initial states of outputs?

On my device, init high or low input can make other results.

I remember someone says pulled-up or pulled-down can setup initial states. Is that right?

Then what's resistor value of them?

Thanks Dear..

ps) Sorry for my poor English.

메시지가 03-27-2006 05:11 PM에 yundorri에 의해 편집되었음

[AlanArmstead]

The easiest way to set the power up states would be to go to a windows machine with NI-DAQmx installed and follow the instructions in this knowledgebase:  How Do I Set Programmable Power Up States and What Boards Support Them?

-Alan A.

[yundorri]

Thanks Dear.

I think you mean there are no tools can run under Linux.

But, if board is programmed once by windows tool such like MAX or LabView,

then that board no more need to change power up states because that feature

is nonvolatile.

Then, what is MAX?? Is that run under MS Windows only?

And are there no way to program that feature under Linux?

메시지가 03-28-2006 06:10 PM에 yundorri에 의해 편집되었음

[AlanArmstead]

You can use NI-DAQmx 8.0 for Linux to set the power up states of devices that support that feature (like the 6509).  And yes, you only need to program the power up states once for the device and they will maintain that power up state until changed again by the user.

-Alan A.

[yundorri]

Hi, Dear.

I think I solved all problems.

Thank you everyone. Special thanks to Alan.