- Fix voltage divider devicetree configuration to reference ADC controller directly instead of channel node
- Switch from ADC API to sensor API for voltage divider usage
- Add required sensor and voltage divider configuration options
- Remove unnecessary zephyr,user node that was causing compilation issues
- The voltage divider now properly uses sensor framework and builds successfully
Hardware setup:
- Uses ADC1 channel 1 on pin PA0
- Voltage divider with 2.2kΩ output and 3.2kΩ total resistance
- Provides voltage readings through sensor API accounting for divider ratio
- Revert ADC_GAIN to ADC_GAIN_1 due to driver limitation.
- Revert ADC_REF to ADC_REF_INTERNAL due to driver limitation.
- Set zephyr,vref-mv to 3300 to match observed hardware behavior.
Eduard Iten