Pico Technical Support and Discussion Forum

mentalsurge · Guest

Hello,

Can you please give me some more info on the set_trigger function.
I cannot get it to work correctly in my program. (C++)
I need it to trigger when I get a voltage on channel 11, but it seems to just return straight away.

I was using the following syntax:

adc11_set_trigger(true, false, 0, 11, false, 300, 0);

The voltage that is my trigger is around 1V. My adc11 is V3, and I am using Visual C++ for windows.

Many thanks

Dan Tallentire.

Guest · Posted: Fri Nov 29, 2002 2:40 pm Post subject: ADC11 Set Trigger Values

Hello,

It looks like you have scaled the 1V into adc counts incorrectly so the unit is trigger early.

A description of the function is given below

mentalsurge · Guest

Thankyou for the response, but this still does not seem to be working.

It does not matter what I set the trigger value to, it still does not wait for the trigger. I know my ADC11 is working, as it intializes correctly in the code, and I have used the digital output from the code also.

I have also checked the channel using the Picoscope, and this shows the voltage change from the channel.

Changing the trigger value to well above the level of my voltage does not make any difference, as it still triggers straight away.

Any ideas?

Thanks,

Dan Tallentire.

matthew · Posted: Tue Dec 10, 2002 6:00 pm Post subject:

Hi Dan,

Does the ADC-11 trigger correctly in PicoScope (you hint at this but do not state it explicitly)?
Try it in Auto-Trigger mode.

Regards,

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