STM32 has a 12bit ADC, but when I read it, the resolution is 10-bit. Why?

[bryan costanich]

Posted on November 13, 2017 at 16:53

Hi folks!

The STM32 series has a 12-bit ADC, but when I'm reading values from AnalogInputs on a Netduino, it's only 10-bit precision (1,024 steps). Why is that? Is there something being lost in the .NET MicroFramework layer? Or is this just how the ADC works?

[waclawek.jan]

Posted on November 13, 2017 at 17:09

Or is this just how the ADC works?

No.

Is there something being lost in the .NET MicroFramework layer?

Maybe. What does the Netduino documentation say?

JW

[bryan costanich]

Posted on November 13, 2017 at 17:47

It doesn't specifiy.

I'm writing that documentation.

I'll go dig around the Microframework code. My guess is that it's set this way to be Arduino compatible.