Kenji Arai
In the past, you need modify rtc_api.c in mbed-dev source code. From this revision, you can just use RTC function all of conditions (Normal, Reset, Stand-by, Power OFF).
Note
From now on, you do NOT need any modification for mbed-dev library because STM team updates rtc_api.c source code and support RTC function under reset & standby condition includes power off condition (You need additional VBAT back-up hardware).
Please refer following NOTE information.
/users/kenjiArai/notebook/nucleo-series-rtc-control-under-power-onoff-and-re/
Revision 1:7a48c475bbd2, committed 2015-02-14
- Comitter:
- kenjiArai
- Date:
- Sat Feb 14 11:35:34 2015 +0000
- Parent:
- 0:0751c92c0f71
- Child:
- 2:77ec44bf1fa5
- Commit message:
- support L152 mbed. Need to modify rtc_api.c in mbed-src.
Changed in this revision
--- a/SetRTC.lib Sat Feb 07 03:18:40 2015 +0000 +++ b/SetRTC.lib Sat Feb 14 11:35:34 2015 +0000 @@ -1,1 +1,1 @@ -http://developer.mbed.org/users/kenjiArai/code/SetRTC/#e4c20fd769f1 +http://developer.mbed.org/users/kenjiArai/code/SetRTC/#3129de8d50ea
--- a/main.cpp Sat Feb 07 03:18:40 2015 +0000
+++ b/main.cpp Sat Feb 14 11:35:34 2015 +0000
@@ -6,7 +6,7 @@
* http://www.page.sannet.ne.jp/kenjia/index.html
* http://mbed.org/users/kenjiArai/
* Created: January 17th, 2015
- * Revised: Feburary 7th, 2015
+ * Revised: Feburary 14th, 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
@@ -18,6 +18,7 @@
// Include ---------------------------------------------------------------------------------------
#include "mbed.h"
#include "TextLCD.h"
+ // MUST -> need to modify rtc_api.c, please refer SetRTC.h file [CATION] and modify_info_xxx.h
#include "SetRTC.h"
// Definition ------------------------------------------------------------------------------------
@@ -25,6 +26,11 @@
#define USE_LCD
+#if defined(TARGET_NUCLEO_F401RE) || defined(TARGET_NUCLEO_F411RE) || defined(TARGET_NUCLEO_L152RE)
+#else
+#error "Target is only Nucleo F401RE, F411RE and L152RE"
+#endif
+
// Object ----------------------------------------------------------------------------------------
DigitalIn userSW(USER_BUTTON);
DigitalOut myled(LED1); // Indicate the sampling period
@@ -73,7 +79,7 @@
}
show_RTC_reg(); // only for debug purpose
while(1) {
- myled = !myled;
+ myled = 1;
seconds = time(NULL);
strftime(buf, 40, " %B %d,'%y, %H:%M:%S\r\n", localtime(&seconds));
pc.printf("[Time] %s", buf);
@@ -88,7 +94,7 @@
if (counter){
--counter;
// 012345678901234567890123456789012345678901234567890123456789012
- pc.printf("Is time correct? If okay, nothing. If not, please hit any key.\r");
+ pc.printf("Is time correct? If no, hit any key.\r");
wait(1.0);
if (pc.readable() == 1){
buf[0] = pc.getc(); // dummy read
@@ -110,7 +116,8 @@
#endif
pc.printf("\r\nEnter Deep Sleep Mode, please push RESET to wake-up\r\n");
wait(1.0);
- myled = 0;
+ myled = 0;
+ deepsleep_preparation();
deepsleep();
}
}
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/mbed-src.lib Sat Feb 14 11:35:34 2015 +0000 @@ -0,0 +1,1 @@ +http://mbed.org/users/mbed_official/code/mbed-src/#cfdbf9d61292
--- a/mbed-src_check_rtc_base464.lib Sat Feb 07 03:18:40 2015 +0000 +++ /dev/null Thu Jan 01 00:00:00 1970 +0000 @@ -1,1 +0,0 @@ -http://developer.mbed.org/users/kenjiArai/code/mbed-src_check_rtc_base464/#f8b8977c8d16