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/
mbed.bld@1:eaa3c3f36c03, 2014-10-25 (annotated)
- Committer:
- kenjiArai
- Date:
- Sat Oct 25 05:42:45 2014 +0000
- Revision:
- 1:eaa3c3f36c03
- Parent:
- 0:bad75bd13618
- Child:
- 2:8b6a8cfa173a
RTC Clock test program only for Nucleo F401RE & F411RE. Standard Lib. cannot support a LSE(External 32.768kHz Xtal) mode due to short time-out setting (Other words, capacitor's value for Xtal are not optimize due to poor design consideration)
Who changed what in which revision?
User | Revision | Line number | New contents of line |
---|---|---|---|
kenjiArai | 1:eaa3c3f36c03 | 1 | http://mbed.org/users/mbed_official/code/mbed/builds/552587b429a1 |