Kenji Arai / SetRTC

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/

Diff: SetRTC.h

Revision:
7:fa32602e23ec
Parent:
6:ef7d2c83034d
Child:
13:44e5327acb05
--- a/SetRTC.h	Thu Feb 19 02:56:12 2015 +0000
+++ b/SetRTC.h	Sat May 16 00:34:50 2015 +0000
@@ -7,7 +7,7 @@
  *  http://www.page.sannet.ne.jp/kenjia/index.html
  *  http://mbed.org/users/kenjiArai/
  *      Created:  October   24th, 2014
- *      Revised:  Feburary  19th, 2015
+ *      Revised:  May       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
@@ -52,17 +52,21 @@
  * int main() {
  *   time_t seconds;
  *
- *   CheckRTC();
+ *   if (SetRTC(0) == 1) { // No use COMP(PB5 or 6) (only L152RE)
+ *       PRINTF("Use External CLK (Good for RTC)\r\n");
+ *   } else {
+ *       PRINTF("Use Internal CLK (Bad for RTC)\r\n");
+ *   }
  *   printf("Time: %s", ctime(&seconds));
  * }
  * @endcode
  */
 
 /** Check and Set RTC
-  * @param none
+  * @param use_comparator = 1 Use COMP(only for L152 PB5 or 6 set-up), =0 no HW modification
   * @return if proper setting = 1, if not = 0
   */
-int32_t SetRTC(void);
+int32_t SetRTC(uint8_t use_comparator);
 
 /** Show(print) RTC related registers
   * @param none