Failed to read analog value.

[schosdas]

Hello

I am using sdk v17.0 and nRF52DK.

I'm going to simply read the analog sensor MICS-5524 (gas sensor).  And to do this, we used the SAADC example code and connected it to the 5V, Gnd, and A0 pins.

However, it does not read any value from the sensor.  I checked it in Arduino first, so I don't think it's a problem with the sensor.

Can I know about this problem?

Thank you!

[Charlie]

Hi,

The SAADC example actually uses AIN0(P0.02). You can find its position from the DK schemtic in the hardware design package.

Best regard,

Charlie

[schosdas]

Ah.. The DK board says A0 is p0.03, but you are right. It works well after changing the code to Ain1.

Thank you!