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authorPeter Hinch <peter@hinch.me.uk>2015-10-14 10:01:14 +0100
committerDamien George <damien.p.george@gmail.com>2015-10-20 12:05:16 +0100
commitb106532b32b7b92d62250ca6a9edea078e042597 (patch)
treef84ad75a7079b0b3951f3fea91033da8f6a8beef
parent8e6e9eaea575f2f9b7b3591c813002cd94ff45e3 (diff)
downloadmicropython-b106532b32b7b92d62250ca6a9edea078e042597.tar.gz
micropython-b106532b32b7b92d62250ca6a9edea078e042597.zip
stmhal/rtc: Init uses YMD rather than backup register to detect powerup.
-rw-r--r--stmhal/rtc.c8
1 files changed, 3 insertions, 5 deletions
diff --git a/stmhal/rtc.c b/stmhal/rtc.c
index 1be0b6e62b..679f586631 100644
--- a/stmhal/rtc.c
+++ b/stmhal/rtc.c
@@ -161,6 +161,7 @@ STATIC void RTC_CalendarConfig(void);
void rtc_init(void) {
RTCHandle.Instance = RTC;
+ RTC_DateTypeDef date;
/* Configure RTC prescaler and RTC data registers */
/* RTC configured as follow:
@@ -188,8 +189,8 @@ void rtc_init(void) {
// record how long it took for the RTC to start up
rtc_info = HAL_GetTick() - tick;
- // check data stored in BackUp register0
- if (HAL_RTCEx_BKUPRead(&RTCHandle, RTC_BKP_DR0) != 0x32f2) {
+ HAL_RTC_GetDate(&RTCHandle, &date, FORMAT_BIN);
+ if (date.Year == 0 && date.Month ==0 && date.Date == 0) {
// fresh reset; configure RTC Calendar
RTC_CalendarConfig();
} else {
@@ -233,9 +234,6 @@ STATIC void RTC_CalendarConfig(void) {
// init error
return;
}
-
- // write data to indicate the RTC has been set
- HAL_RTCEx_BKUPWrite(&RTCHandle, RTC_BKP_DR0, 0x32f2);
}
/*