drivers: counter: add support for rtc in STM32C0-series

This commit extends the rtc counter driver to work on
the STM32C0-series.

Signed-off-by: Benjamin Björnsson <[email protected]>

Author: benjaminbjornsson

drivers/counter/Kconfig.stm32_rtc

@@ -13,7 +13,7 @@ menuconfig COUNTER_RTC_STM32
 	select USE_STM32_LL_EXTI
 	help
 	  Build RTC driver for STM32 SoCs.
-	  Tested on STM32 F0, F2, F3, F4, F7, G0, G4, H7, L1, L4, L5, U5 series
+	  Tested on STM32 C0, F0, F2, F3, F4, F7, G0, G4, H7, L1, L4, L5, U5 series
 
 if COUNTER_RTC_STM32
 

drivers/counter/counter_ll_stm32_rtc.c

@@ -37,7 +37,8 @@ LOG_MODULE_REGISTER(counter_rtc_stm32, CONFIG_COUNTER_LOG_LEVEL);
 
 #if defined(CONFIG_SOC_SERIES_STM32L4X)
 #define RTC_EXTI_LINE	LL_EXTI_LINE_18
-#elif defined(CONFIG_SOC_SERIES_STM32G0X)
+#elif defined(CONFIG_SOC_SERIES_STM32C0X) \
+	|| defined(CONFIG_SOC_SERIES_STM32G0X)
 #define RTC_EXTI_LINE	LL_EXTI_LINE_19
 #elif defined(CONFIG_SOC_SERIES_STM32F4X) \
 	|| defined(CONFIG_SOC_SERIES_STM32F0X) \
@@ -371,7 +372,9 @@ void rtc_stm32_isr(const struct device *dev)
 
 #if defined(CONFIG_SOC_SERIES_STM32H7X) && defined(CONFIG_CPU_CORTEX_M4)
 	LL_C2_EXTI_ClearFlag_0_31(RTC_EXTI_LINE);
-#elif defined(CONFIG_SOC_SERIES_STM32G0X) || defined(CONFIG_SOC_SERIES_STM32L5X)
+#elif defined(CONFIG_SOC_SERIES_STM32C0X) \
+	|| defined(CONFIG_SOC_SERIES_STM32G0X) \
+	|| defined(CONFIG_SOC_SERIES_STM32L5X)
 	LL_EXTI_ClearRisingFlag_0_31(RTC_EXTI_LINE);
 #elif defined(CONFIG_SOC_SERIES_STM32U5X)
 	/* in STM32U5 family RTC is not connected to EXTI */