add init of the RTC

Signed-off-by: Francois Ramu <[email protected]>

Author: FRASTM

src/utility/HCISharedMemTransport.cpp

@@ -19,6 +19,8 @@
 
 #include "HCISharedMemTransport.h"
 #include "STM32Cube_FW/hw.h"
+#include "stm32wbxx_hal_rtc.h"
+#include "stm32wbxx_hal_rtc_ex.h"
 
 /* global var used as semaphore to control incoming events */
 volatile bool sys_event; /* true : M0 core is already up and running */
@@ -463,6 +465,28 @@ size_t HCISharedMemTransportClass::write(const uint8_t* data, size_t length)
 //private:
     void start_ble_rf(void)
 {
+
+LL_PWR_EnableBkUpAccess();
+__HAL_RCC_RTC_CONFIG(RCC_RTCCLKSOURCE_LSE);
+__HAL_RCC_RTC_ENABLE();
+
+RTC_HandleTypeDef hrtc;
+
+hrtc.Instance = RTC;
+hrtc.Init.HourFormat = RTC_HOURFORMAT_24;
+hrtc.Init.AsynchPrediv = 0x7F;
+hrtc.Init.SynchPrediv = 0x0FF;
+hrtc.Init.OutPut = RTC_OUTPUT_DISABLE;
+hrtc.Init.OutPutPolarity = RTC_OUTPUT_POLARITY_HIGH;
+hrtc.Init.OutPutType = RTC_OUTPUT_TYPE_OPENDRAIN;
+if (HAL_RTC_Init(&hrtc) != HAL_OK) {
+        Error_Handler();
+}
+MODIFY_REG(RTC->CR, RTC_CR_WUCKSEL, 0);
+HAL_RTCEx_EnableBypassShadow(&hrtc);
+
+
+
         if ((LL_RCC_IsActiveFlag_PINRST()) && (!LL_RCC_IsActiveFlag_SFTRST())) {
             /* Simulate power off reset */
             LL_PWR_EnableBkUpAccess();