LPC MicrocontrollersのトピックRe: GPIO Analog Input or ADC Analog Input (LPC55S06-EVK)

GPIO Analog Input or ADC Analog Input (LPC55S06-EVK)

caden013 — Fri, 04 Jun 2021 18:07:23 GMT

Hello, all

I am trying to use the headers on my board (J13) to take in analog input; however, it appears that the GPIO pins are only for digital input/output. In the MCUXpresso SDK API Reference Manual, the only accessible GPIO "pin directions" are kGPIO_DigitalInput and kGPIO_DigitalOutput.

I want to setup a pin as an analog input, but do I accomplish this by using the GPIO method? If not, do I have to use the ADC instead?

Thanks in advance.

Re: GPIO Analog Input or ADC Analog Input (LPC55S06-EVK)

Alice_Yang — Mon, 07 Jun 2021 08:06:57 GMT

Hello caden013,

What function do you want to use about the analog signal?

Only the below pins can used as analog function:

And please pay attention the configuration:

Alice