Last night I remembered that there was a temperature sensor on the same bus. It was on a other board, so it was easy to forget. It didn't show on I2C bus spy output either. When I took that sensor away ADC started to work.
Last night I remembered that there was a temperature sensor on the same bus. It was on a other board, so it was easy to forget. It didn't show on I2C bus spy output either. When I took that sensor away ADC started to work.