From e2cb35e9ad726713da701b8a95393473471560b4 Mon Sep 17 00:00:00 2001 From: dbestm Date: Mon, 4 Apr 2016 23:02:48 +0200 Subject: [PATCH] [XXX_F746XG] Move erasing of BkUpR in RTC API The erasing of back up register is only needed when using LSI in RTC API --- .../hal/TARGET_STM/TARGET_STM32F7/rtc_api.c | 22 ++++++++++--------- 1 file changed, 12 insertions(+), 10 deletions(-) diff --git a/libraries/mbed/targets/hal/TARGET_STM/TARGET_STM32F7/rtc_api.c b/libraries/mbed/targets/hal/TARGET_STM/TARGET_STM32F7/rtc_api.c index e43d2b1bf0..2293faba5e 100644 --- a/libraries/mbed/targets/hal/TARGET_STM/TARGET_STM32F7/rtc_api.c +++ b/libraries/mbed/targets/hal/TARGET_STM/TARGET_STM32F7/rtc_api.c @@ -46,16 +46,6 @@ void rtc_init(void) 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; @@ -71,6 +61,16 @@ void rtc_init(void) 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! @@ -103,6 +103,7 @@ void rtc_init(void) void rtc_free(void) { +#if DEVICE_RTC_LSI // Enable Power clock __PWR_CLK_ENABLE(); @@ -115,6 +116,7 @@ void rtc_free(void) // Disable access to Backup domain HAL_PWR_DisableBkUpAccess(); +#endif // Disable LSI and LSE clocks RCC_OscInitTypeDef RCC_OscInitStruct;