Kinetis Design StudioのトピックRe: Processor Expert ADC configuration question...

Processor Expert ADC configuration question...

mike1974 — Tue, 09 Jun 2015 16:28:02 GMT

Hello everyone,

I'm using the ADC component in Processor Expert (found in "CPU Internal Peripherals --> Converter --> ADC"). I don't see any way to configure the ADC to do continuous conversions (instead of just a single conversion) and also hardware averaging.

Anyone know how to do this?

Right now I'm having to circumvent P.E, and do my own manual config in the code. It works, but it's a rather ugly way of doing it because I had to duplicate some P.E. struct definitions in my code.

Thank you,

--Michael

Re: Processor Expert ADC configuration question...

Carlos_Mendoza — Tue, 09 Jun 2015 20:47:29 GMT

Hi Michael,

Could you tell us which KDS version and MCU are you using?

Best Regards,

Carlos Mendoza

Technical Support Engineer

Re: Processor Expert ADC configuration question...

mike1974 — Tue, 09 Jun 2015 21:17:35 GMT

Hi Carlos I am using KDS 2.0.0 and MK22FN1MOVLQ12

Re: Processor Expert ADC configuration question...

Carlos_Mendoza — Thu, 11 Jun 2015 21:49:06 GMT

Hi Michael,

Thanks for the information, I would recommend you to better use the ADC_LDD component:

You can use the "StartLoopMeasurement" method of this component for a continuous conversion and depending on the number of conversions selected the Hardware Average is enabled/disabled.

Hope it helps!

Best Regards,

Carlos Mendoza

Technical Support Engineer

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Re: Processor Expert ADC configuration question...

rabbitz — Thu, 11 Jun 2015 23:33:31 GMT

Hi Carlos,

If I need do continuous sampling at 20Khz, how can I achieve it?

Use "StartLoopMeasurement" method and timer interrupt at 50uS interval to read the ADC value?

Regards

Sam

Re: Processor Expert ADC configuration question...

Carlos_Mendoza — Fri, 12 Jun 2015 22:50:19 GMT

Hi Rabbitz,

In your case it would be better to use the "StartLoopTriggeredMeasurement" method and configure the ADC to be triggered by the timer, you can use as reference the "HW triggered conversion of a selected sample group, with interrupt service" example included on the component help:

Hope it helps!

Best Regards,

Carlos Mendoza

Technical Support Engineer

Re: Processor Expert ADC configuration question...

mike1974 — Thu, 18 Jun 2015 21:28:17 GMT

Great thank you Carlos