Helmut Tschemernjak / mbed-dev

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API Documentation at this revision

Revision 105:364b35371a11, committed 2016-04-04

Comitter:
mbed_official
Date:
Mon Apr 04 11:15:10 2016 +0100
Parent:
104:e48d70d14486
Child:
106:c405d2eb506d
Commit message:
Synchronized with git revision 76649d8a973284d599f0d65373a87536ebefe53e

Full URL: https://github.com/mbedmicro/mbed/commit/76649d8a973284d599f0d65373a87536ebefe53e/

the erasing of back up register is only needed when using LSI

Changed in this revision

targets/hal/TARGET_STM/TARGET_STM32L0/rtc_api.c Show annotated file Show diff for this revision Revisions of this file
targets/hal/TARGET_STM/TARGET_STM32L1/rtc_api.c Show annotated file Show diff for this revision Revisions of this file 
--- a/targets/hal/TARGET_STM/TARGET_STM32L0/rtc_api.c	Mon Apr 04 10:00:11 2016 +0100
+++ b/targets/hal/TARGET_STM/TARGET_STM32L0/rtc_api.c	Mon Apr 04 11:15:10 2016 +0100
@@ -51,16 +51,6 @@
 
     RtcHandle.Instance = RTC;
 
-    // Enable Power clock
-    __PWR_CLK_ENABLE();
-
-    // Enable access to Backup domain
-    HAL_PWR_EnableBkUpAccess();
-
-    // Reset Backup domain
-    __HAL_RCC_BACKUPRESET_FORCE();
-    __HAL_RCC_BACKUPRESET_RELEASE();
-
 #if !DEVICE_RTC_LSI
     // Enable LSE Oscillator
     RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_LSE;
@@ -75,6 +65,16 @@
         error("Cannot initialize RTC with LSE\n");
     }
 #else
+    // Enable Power clock
+    __PWR_CLK_ENABLE();
+
+    // Enable access to Backup domain
+    HAL_PWR_EnableBkUpAccess();
+
+    // Reset Backup domain
+    __HAL_RCC_BACKUPRESET_FORCE();
+    __HAL_RCC_BACKUPRESET_RELEASE();
+
     // Enable LSI clock
     RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_LSI | RCC_OSCILLATORTYPE_LSE;
     RCC_OscInitStruct.PLL.PLLState   = RCC_PLL_NONE; // Mandatory, otherwise the PLL is reconfigured!
@@ -107,6 +107,7 @@
 
 void rtc_free(void)
 {
+#if DEVICE_RTC_LSI
     // Enable Power clock
     __PWR_CLK_ENABLE();
 
@@ -119,6 +120,7 @@
 
     // Disable access to Backup domain
     HAL_PWR_DisableBkUpAccess();
+#endif
 
     // Disable LSI and LSE clocks
     RCC_OscInitTypeDef RCC_OscInitStruct;

--- a/targets/hal/TARGET_STM/TARGET_STM32L1/rtc_api.c	Mon Apr 04 10:00:11 2016 +0100
+++ b/targets/hal/TARGET_STM/TARGET_STM32L1/rtc_api.c	Mon Apr 04 11:15:10 2016 +0100
@@ -51,16 +51,6 @@
 
     RtcHandle.Instance = RTC;
 
-    // Enable Power clock
-    __PWR_CLK_ENABLE();
-
-    // Enable access to Backup domain
-    HAL_PWR_EnableBkUpAccess();
-
-    // Reset Backup domain
-    __HAL_RCC_BACKUPRESET_FORCE();
-    __HAL_RCC_BACKUPRESET_RELEASE();
-
 #if !DEVICE_RTC_LSI
     // Enable LSE Oscillator
     RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_LSI | RCC_OSCILLATORTYPE_LSE;
@@ -76,6 +66,16 @@
 	    error("Cannot initialize RTC with LSE\n");
     }
 #else	
+    // Enable Power clock
+    __PWR_CLK_ENABLE();
+
+    // Enable access to Backup domain
+    HAL_PWR_EnableBkUpAccess();
+
+    // Reset Backup domain
+    __HAL_RCC_BACKUPRESET_FORCE();
+    __HAL_RCC_BACKUPRESET_RELEASE();
+
 	// Enable LSI clock
 	RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_LSI | RCC_OSCILLATORTYPE_LSE;
 	RCC_OscInitStruct.PLL.PLLState   = RCC_PLL_NONE; // Mandatory, otherwise the PLL is reconfigured!
@@ -114,6 +114,7 @@
 
 void rtc_free(void)
 {
+#if DEVICE_RTC_LSI
     // Enable Power clock
     __PWR_CLK_ENABLE();
 
@@ -126,6 +127,7 @@
 
     // Disable access to Backup domain
     HAL_PWR_DisableBkUpAccess();
+#endif
 
     // Disable LSI and LSE clocks
     RCC_OscInitTypeDef RCC_OscInitStruct;