Posted on May 02, 2016 at 11:22 Just for more information. I also tested with VBAT, and the return value is about 3050. On the board, VBAT is connected to VDD = VDDA = VREF+. If correctly, it must be 4095.
Testing with other external channels (ADC1_IN2/IN3), the result is ok.
So, what's the problem with internal channels? I can't figure out it.