STM32L4x supplying the IOs via internal voltage regulator of microcontroller

Job ID: 32139821

Budget: $30 – $250 CAD

a source code based on STM32Duino to run the Microcontroller IOs via internal voltage regulator of STM32L4x chips. These are mandatory:
1- Source code runs in Arduino environment using STM32Duino core (1.6 or 1.9)
2- IO should run on regulated 2.50V on a wide range of supply from 1.8V to 3.3V
3- no other components except microcontroller.