From bdbc85ac6453a1856de8092253d0032ad734dc4a Mon Sep 17 00:00:00 2001 From: dbestm Date: Fri, 1 Apr 2016 11:18:06 +0200 Subject: [PATCH] [xxx_L476XG] remove erase of BkUpR in RTC API the erase of back up regsiters are needed only when using RTC+LSI --- .../hal/TARGET_STM/TARGET_STM32L4/rtc_api.c | 22 ++++++++++--------- 1 file changed, 12 insertions(+), 10 deletions(-) diff --git a/libraries/mbed/targets/hal/TARGET_STM/TARGET_STM32L4/rtc_api.c b/libraries/mbed/targets/hal/TARGET_STM/TARGET_STM32L4/rtc_api.c index 1176bdf9ae..bfb43bec9d 100644 --- a/libraries/mbed/targets/hal/TARGET_STM/TARGET_STM32L4/rtc_api.c +++ b/libraries/mbed/targets/hal/TARGET_STM/TARGET_STM32L4/rtc_api.c @@ -52,16 +52,6 @@ void rtc_init(void) RtcHandle.Instance = RTC; - // Enable Power clock - __HAL_RCC_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; @@ -78,6 +68,16 @@ void rtc_init(void) error("Cannot initialize RTC with LSE\n"); } #else + // Enable Power clock + __HAL_RCC_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! @@ -116,6 +116,7 @@ void rtc_init(void) void rtc_free(void) { +#if DEVICE_RTC_LSI // Enable Power clock __HAL_RCC_PWR_CLK_ENABLE(); @@ -128,6 +129,7 @@ void rtc_free(void) // Disable access to Backup domain HAL_PWR_DisableBkUpAccess(); +#endif // Disable LSI and LSE clocks RCC_OscInitTypeDef RCC_OscInitStruct;