stmhal: Fix RTC code to work on the F7

57e00ef2 · Dave Hylands · 7f3c0d1e · 57e00ef2
Commit 57e00ef2 authored Nov 07, 2015 by Dave Hylands
--- a/stmhal/rtc.c
+++ b/stmhal/rtc.c
@@ -211,7 +211,7 @@ void rtc_init(void) {
        if (rtc_use_lse) {
            // fall back to LSI...
            rtc_use_lse = false;
-            PWR->CR |= PWR_CR_DBP;
+            HAL_PWR_EnableBkUpAccess();
            RTCHandle.State = HAL_RTC_STATE_RESET;
            if (HAL_RTC_Init(&RTCHandle) != HAL_OK) {
                rtc_info = 0x0100ffff; // indicate error