From e1afd2700be6c631f1e74766525724cf95588c3e Mon Sep 17 00:00:00 2001
From: barthess <barthess@35acf78f-673a-0410-8e92-d51de3d6d3f4>
Date: Sun, 18 Sep 2011 21:08:42 +0000
Subject: Added RCC helper support to RTC driver.

git-svn-id: svn://svn.code.sf.net/p/chibios/svn/trunk@3342 35acf78f-673a-0410-8e92-d51de3d6d3f4
---
 os/hal/platforms/STM32/rtc_lld.c       |  2 +-
 os/hal/platforms/STM32F1xx/stm32_rcc.h | 32 ++++++++++++++++++++++++++++++++
 2 files changed, 33 insertions(+), 1 deletion(-)

(limited to 'os')

diff --git a/os/hal/platforms/STM32/rtc_lld.c b/os/hal/platforms/STM32/rtc_lld.c
index 4f404ab27..62e114e66 100644
--- a/os/hal/platforms/STM32/rtc_lld.c
+++ b/os/hal/platforms/STM32/rtc_lld.c
@@ -112,7 +112,7 @@ CH_IRQ_HANDLER(RTC_IRQHandler) {
  * @notapi
  */
 void rtc_lld_init(void){
-  RCC->APB1ENR |= (RCC_APB1ENR_PWREN | RCC_APB1ENR_BKPEN);  /* enable clocking */
+  rccEnableBKP(FALSE);                                      /* enable interface clocking */
   PWR->CR |= PWR_CR_DBP;                                    /* enable access */
 
   if (!(RCC->BDCR & (RCC_BDCR_RTCEN | RCC_BDCR_LSEON))){    /* BKP domain was reseted */
diff --git a/os/hal/platforms/STM32F1xx/stm32_rcc.h b/os/hal/platforms/STM32F1xx/stm32_rcc.h
index 56fa0905c..7735b2034 100644
--- a/os/hal/platforms/STM32F1xx/stm32_rcc.h
+++ b/os/hal/platforms/STM32F1xx/stm32_rcc.h
@@ -202,6 +202,38 @@
 #define rccResetADC1() rccResetAPB2(RCC_APB2RSTR_ADC1RST)
 /** @} */
 
+/**
+ * @brief   Bakup domain interface specific RCC operations
+ * @{
+ */
+/**
+ * @brief   Enables the BKP interface clock.
+ * @note    The @p lp parameter is ignored in this family.
+ *
+ * @param[in] lp        low power enable flag
+ *
+ * @api
+ */
+#define rccEnableBKP(lp) rccEnableAPB1(RCC_APB1ENR_BKPEN, lp);
+
+/**
+ * @brief   Disables BKP interface clock.
+ * @note    The @p lp parameter is ignored in this family.
+ *
+ * @param[in] lp        low power enable flag
+ *
+ * @api
+ */
+#define rccDisableBKP(lp) rccDisableAPB1(RCC_APB1ENR_BKPEN, lp);
+
+/**
+ * @brief   Resets the Backup Domain.
+ *
+ * @api
+ */
+#define rccResetBKP(lp) rccResetAPB1(RCC_APB1ENR_BKPRST);
+/** @} */
+
 /**
  * @brief   CAN peripherals specific RCC operations
  * @{
-- 
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