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/
Diff: main.cpp
- Revision:
- 2:77ec44bf1fa5
- Parent:
- 1:7a48c475bbd2
- Child:
- 3:7b3edf54c706
--- a/main.cpp Sat Feb 14 11:35:34 2015 +0000
+++ b/main.cpp Mon Feb 16 13:07:57 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 14th, 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
@@ -18,7 +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
+ // MUST -> need to modify rtc_api.c, please refer SetRTC.h file [CAUTION] and modify_info_xxx.h
#include "SetRTC.h"
// Definition ------------------------------------------------------------------------------------
@@ -66,20 +66,20 @@
lcd.setContrast(0x14);
#endif
pc.printf("\r\n\r\nTest Nucleo RTC Function\r\n");
+ myled = !myled;
+ if (SetRTC() == OK) {
+ pc.printf("External");
+ } else {
+ pc.printf("Internal");
+ }
+ pc.printf(" Xtal for RTC\r\n");
+ show_RTC_reg(); // only for debug purpose
// waiting for Initial screen
myled = 1;
wait(1.0);
myled = !myled;
wait(1.0);
- myled = !myled;
- if (SetRTC() == OK) {
- pc.printf("External Xtal for RTC\r\n");
- } else {
- pc.printf("Internal Xtal for RTC\r\n");
- }
- show_RTC_reg(); // only for debug purpose
while(1) {
- myled = 1;
seconds = time(NULL);
strftime(buf, 40, " %B %d,'%y, %H:%M:%S\r\n", localtime(&seconds));
pc.printf("[Time] %s", buf);
@@ -91,34 +91,35 @@
strftime(buf, 10, "%H:%M:%S", localtime(&seconds));
lcd.printf(buf);
#endif
+ --counter;
if (counter){
- --counter;
// 012345678901234567890123456789012345678901234567890123456789012
pc.printf("Is time correct? If no, hit any key.\r");
- wait(1.0);
+ }
+ while (seconds == time(NULL)){
if (pc.readable() == 1){
buf[0] = pc.getc(); // dummy read
time_enter_mode();
- counter = SHOW_KEY_PROMPT;
}
- pc.printf(" \r");
- } else {
- wait(1.0);
- }
- if (userSW == 0){
+ if (userSW == 0){
#if defined(USE_LCD)
- lcd.locate(0, 0); // 1st line top
- // 12345678
- lcd.printf(" Enter ");
- lcd.locate(0, 1); // 2nd line top
- // 12345678
- lcd.printf(" Sleep " );
+ lcd.locate(0, 0); // 1st line top
+ // 12345678
+ lcd.printf(" Enter ");
+ lcd.locate(0, 1); // 2nd line top
+ // 12345678
+ lcd.printf(" Sleep " );
#endif
- pc.printf("\r\nEnter Deep Sleep Mode, please push RESET to wake-up\r\n");
- wait(1.0);
- myled = 0;
- deepsleep_preparation();
- deepsleep();
+ pc.printf("\r\nEnter Deep Sleep Mode, please push RESET to wake-up\r\n");
+ wait(1.0);
+ myled = 0;
+ deepsleep_preparation();
+ deepsleep();
+ }
}
+ if (counter){
+ pc.printf(" \r");
+ }
+ myled = !myled;
}
}