Stm32-DS3231
STM32F103 (blue pill) interface with DS3231 program with Arduino IDE.
SDA -->SDA
SCL --> SCL
the main library was source by: https://github.com/NorthernWidget/DS3231
STM32F103 (blue pill) interface with DS3231 program with Arduino IDE.
SDA -->SDA
SCL --> SCL
the main library was source by: https://github.com/NorthernWidget/DS3231