Steve Thackery

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5 years, 2 months ago.

How to read two ADCs (FRDM-K64F)

The K64F has two ADCs on board. I'd like to connect one permanently to a pin to handle an audio stream in real time, while the other I want to switch between a number of analogue pins in slow time which have analogue control voltages on them.

However, AnalogIn has no way of specifying which of the ADCs to connect to a given pin.

How can I do this? Thank you!! :-)

1 Answer

Pekka Saavalainen
5 years, 2 months ago.

Hi Steve,

There is way to set the pin: AnalogIn ain0(A0); AnalogIn ain1(A1);

I hope this helps.

Regards, Pekka

Thanks for replying, Pekka. I don't think I worded my question very well. Take this line:

AnalogIn ain0(A0)

Which of the two ADCs will be connected to A0?

What I want to do is use one of the ADCs for the audio input pin, and the other ADC for the three control voltages. I don't know how to ensure this.

posted by Steve Thackery 02 Oct 2019