bsp: [stm32] add stm32f407-micu RTC support

Author: Dailingxiang1

bsp/stm32/stm32f407-micu/board/CubeMX_Config/Inc/stm32f4xx_hal_conf.h

@@ -58,7 +58,7 @@
 /* #define HAL_IWDG_MODULE_ENABLED */
 /* #define HAL_LTDC_MODULE_ENABLED */
 /* #define HAL_RNG_MODULE_ENABLED */
-/* #define HAL_RTC_MODULE_ENABLED */
+#define HAL_RTC_MODULE_ENABLED
 /* #define HAL_SAI_MODULE_ENABLED */
 #define HAL_SD_MODULE_ENABLED
 /* #define HAL_MMC_MODULE_ENABLED */

bsp/stm32/stm32f407-micu/board/Kconfig

@@ -100,6 +100,23 @@ menu "On-chip Peripheral Drivers"
                 depends on BSP_USING_SDIO
                 default 1000000
         endif
+
+    menuconfig BSP_USING_ONCHIP_RTC
+        bool "Enable RTC"
+        select RT_USING_RTC
+        default n
+        if BSP_USING_ONCHIP_RTC
+            choice
+                prompt "Select clock source"
+                default BSP_RTC_USING_LSE
+
+                config BSP_RTC_USING_LSE
+                    bool "RTC USING LSE"
+
+                config BSP_RTC_USING_LSI
+                    bool "RTC USING LSI"
+            endchoice
+        endif
     source "$(BSP_DIR)/../libraries/HAL_Drivers/drivers/Kconfig"
 
 endmenu