I have a STM32L051 microcontroller and use the STM32L0Cube HAL.
I read fom the manual, that the STM32L0 have a possibility to provide a stable reference voltage for external ADC/DAC/... This is the VREF(BUF). If I understand correctly, using the CFGR3 register, I can enable the VREF, as well as check if it is ready. Additionally, I can choose to connect it to the PB0/1 output (SEL_VREF_OUT).
However in the examples provided, the VREF is only used internally for Comparator and ADCs, and not for external ICs.
Should I configure, say PB1, to be a standard DAC pin, and then using CFGR3 to connect it to the VREF?
Could someone give me some pointers on how to output the VREF on a PB1?