Maixduino Analogue inputs don't work

The analogue inputs don't work; trying:

Serial.println(analogRead(A0));

always prints 0, and:

Serial.println(analogRead(33));

always prints 33.

Mar 18 '20 15:03 technoblogy

None analog input pin exist!

See wiring.c uint32_t analogRead( uint32_t ulPin ) { #if (defined(BOARD_SIPEED_MAIX_GO) || defined(BOARD_SIPEED_MAIX_ONE_DOCK) ) return 0; #endif }

analogRead() is a dummy function.

Apr 05 '20 07:04 CombiesGit

I'm referring to the Maixduino board. There are six analog pins; see here:

Apr 05 '20 07:04 technoblogy

Ahh,

The analog pins are owned by ESP not by K210.

Apr 05 '20 09:04 CombiesGit

They still need to be supported in the Maixduino core.

Apr 05 '20 10:04 technoblogy

For use analog pins you will need write SPI code for connection between the ESP32 and k210. Analog pins only works from the ESP.

Jul 29 '20 00:07 barni2000

Is there a plan to add the necessary code to the Arduino core, so analogRead() will work as expected?

Jul 29 '20 11:07 technoblogy