From 6a5da1c1f73fc7bbc93a2b5ec17e3fe06c98efbe Mon Sep 17 00:00:00 2001
From: joris <laborde.joris@gmail.com>
Date: Fri, 2 Jun 2017 20:03:09 +0200
Subject: [PATCH] cpu/stm32-common: add RTC support to stm32l0
Signed-off-by: joris <laborde.joris@gmail.com>
---
cpu/stm32_common/periph/rtc.c | 22 +++++++++++++++-------
1 file changed, 15 insertions(+), 7 deletions(-)
diff --git a/cpu/stm32_common/periph/rtc.c b/cpu/stm32_common/periph/rtc.c
index ce81dd2231..195354bad5 100644
--- a/cpu/stm32_common/periph/rtc.c
+++ b/cpu/stm32_common/periph/rtc.c
@@ -27,7 +27,8 @@
#if defined(CPU_FAM_STM32F0) || defined(CPU_FAM_STM32F2) || \
defined(CPU_FAM_STM32F3) || defined(CPU_FAM_STM32F4) || \
- defined(CPU_FAM_STM32F7) || defined(CPU_FAM_STM32L1)
+ defined(CPU_FAM_STM32F7) || defined(CPU_FAM_STM32L0) || \
+ defined(CPU_FAM_STM32L1)
/* guard file in case no RTC device was specified */
#if RTC_NUMOF
@@ -65,7 +66,7 @@ void rtc_init(void)
PWR->CR |= PWR_CR_DBP;
#endif
-#if defined(CPU_FAM_STM32L1)
+#if defined(CPU_FAM_STM32L1) || defined(CPU_FAM_STM32L0)
if (!(RCC->CSR & RCC_CSR_RTCEN)) {
#else
if (!(RCC->BDCR & RCC_BDCR_RTCEN)) {
@@ -192,9 +193,15 @@ int rtc_set_alarm(struct tm *time, rtc_alarm_cb_t cb, void *arg)
/* Enable RTC write protection */
RTC->WPR = 0xFF;
+#if defined(CPU_FAM_STM32L0)
+ EXTI->IMR |= EXTI_IMR_IM17;
+#else
EXTI->IMR |= EXTI_IMR_MR17;
+#endif
+
EXTI->RTSR |= EXTI_RTSR_TR17;
-#if defined(CPU_FAM_STM32F0)
+
+#if defined(CPU_FAM_STM32F0) || defined(CPU_FAM_STM32L0)
NVIC_SetPriority(RTC_IRQn, 10);
NVIC_EnableIRQ(RTC_IRQn);
#else
@@ -235,7 +242,7 @@ void rtc_clear_alarm(void)
void rtc_poweron(void)
{
-#if defined(CPU_FAM_STM32L1)
+#if defined(CPU_FAM_STM32L1) || defined(CPU_FAM_STM32L0)
/* Reset RTC domain */
RCC->CSR |= RCC_CSR_RTCRST;
RCC->CSR &= ~(RCC_CSR_RTCRST);
@@ -274,7 +281,7 @@ void rtc_poweron(void)
void rtc_poweroff(void)
{
-#if defined(CPU_FAM_STM32L1)
+#if defined(CPU_FAM_STM32L1) || defined(CPU_FAM_STM32L0)
/* Reset RTC domain */
RCC->CSR |= RCC_CSR_RTCRST;
RCC->CSR &= ~(RCC_CSR_RTCRST);
@@ -293,7 +300,7 @@ void rtc_poweroff(void)
#endif
}
-#if defined(CPU_FAM_STM32F0)
+#if defined(CPU_FAM_STM32F0) || defined(CPU_FAM_STM32L0)
void isr_rtc(void)
#else
void isr_rtc_alarm(void)
@@ -331,4 +338,5 @@ static uint8_t byte2bcd(uint8_t value)
#endif /* defined(CPU_FAM_STM32F0) || defined(CPU_FAM_STM32F2) || \
defined(CPU_FAM_STM32F3) || defined(CPU_FAM_STM32F4) || \
- defined(CPU_FAM_STM32F7) || defined(CPU_FAM_STM32L1) */
+ defined(CPU_FAM_STM32F7) || defined(CPU_FAM_STM32L0) || \
+ defined(CPU_FAM_STM32L1) */
--
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