DIO Config output initial values

[Joao]

Hello All

I am using PCI-MIO-16E-4, with traditional NI DAQ and LabView 7.1.

DIO port default configuration is as input, high impedance with pull-ups, which turns out to be all "ones".

When I configure some of the lines as outputs they imediatelly output the value "zero".

Is it possible to configure a line as an output while keeping the output value of "one"?

Regards,

          Joao

[kdmcmullan]

Hi.

I've not used THAT particular board, but can't you set the outputs to '1' before configuring the lines as outputs?

[Joao]

Thanks for the tip, but I dont think I can do that, I must always use config before writing or reading the DIO lines.

Joao

[kdmcmullan]

Ah.

OKay - another stab in the dark, then: how about using config to set the IOs as inputs, set the lines as '1' then set the lines as outputs?

[johan G.]

Hi,
A simple solution is to write 1 on the line just after the configuration.

Johan G.
NIF

[kdmcmullan]

I had the impression that our friend wanted to maintain the high setting of the pin. Ergo the suggestion of setting DIOs before configuring them as outputs.

Joao,

it's probably overdue, but could we ask why it's important to keep the outputs high while switching them to be outputs?