This is a RTC additional function. This is only for Nucleo F401RE & F411RE mbed(Added L152RE, F334R8, L476RG & F746xx). If you connected battery backup circuit for internal RTC, you can make a power-off and reset condition. RTC still has proper time and date.

Dependents:   Nucleo_rtos_sample PB_Emma_Ethernet

Please refer following NOTE information.
/users/kenjiArai/notebook/nucleo-series-rtc-control-under-power-onoff-and-re/

modify_info_L152.h

Committer:
kenjiArai
Date:
2015-05-16
Revision:
8:88d30761683b
Parent:
2:765470eab2a6
Child:
12:4074fe3e67c7

File content as of revision 8:88d30761683b:

/*
 * mbed Application program
 *      Library differ part (This is only information document)
 *
 * Copyright (c) 2015 Kenji Arai / JH1PJL
 *  http://www.page.sannet.ne.jp/kenjia/index.html
 *  http://mbed.org/users/kenjiArai/
 *      Created: January   23rd, 2015
 *      Revised: Feburary  16th, 2015
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED,
 * INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE
 * AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
 * DAMAGES OR OTHER  LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 */
//*************************************************************************************************
//  Replace following files in the library
//      rtc_api.c -> rtc_api_L152.c
//*************************************************************************************************
//
// (1) Update mbed-src library if you want
// (2) File rtc_api_L152.c copy to directry
//     /mbed-src/targets/hal/TARGET_STM/TARGET_STM32L1/
// (3) Delete rtc_api.c in the same directory
// (4) Edit rtc_api_L152.c
//      (a)Delete 1st line
//      (b)Delete last line
//