Check RTC LSE(External Xtal, 32.768kHz) mode
Please refer follow links.
My notebook
http://developer.mbed.org/users/kenjiArai/notebook/nucleo-series-clock-structure-and-xtal-oscillation/
Q&A for RTC Xtal
http://developer.mbed.org/questions/4531/RTC-External-Crystal-Nucleo/
Diff: TextLCD.lib
- Revision:
- 3:921a09e41147
- Parent:
- 2:8b6a8cfa173a