1 files changed, 164 insertions, 0 deletions
diff --git a/Projects/NUCLEO-WB15CC/Applications/BLE/BLE_MeshLightingLPN/Core/Src/standby_stm32wb15.c b/Projects/NUCLEO-WB15CC/Applications/BLE/BLE_MeshLightingLPN/Core/Src/standby_stm32wb15.c
new file mode 100644
index 000000000..f7172d804
--- /dev/null
+++ b/Projects/NUCLEO-WB15CC/Applications/BLE/BLE_MeshLightingLPN/Core/Src/standby_stm32wb15.c
@@ -0,0 +1,164 @@
+/* USER CODE BEGIN Header */
+/**
+  ******************************************************************************
+  * @file    standby_stm32wb15.c
+  * @author  MCD Application Team
+  * @brief   Specific code for standby mode
+  ******************************************************************************
+  * @attention
+  *
+  * Copyright (c) 2021 STMicroelectronics.
+  * All rights reserved.
+  *
+  * This software is licensed under terms that can be found in the LICENSE file
+  * in the root directory of this software component.
+  * If no LICENSE file comes with this software, it is provided AS-IS.
+  *
+  ******************************************************************************
+  */
+/* USER CODE END Header */
+
+/* Includes ------------------------------------------------------------------*/
+#include "main.h"
+#include "app_entry.h"
+#include "app_common.h"
+#include "app_debug.h"
+
+/* Private includes ----------------------------------------------------------*/
+/* USER CODE BEGIN Includes */
+
+/* USER CODE END Includes */
+
+/* Private typedef -----------------------------------------------------------*/
+/* USER CODE BEGIN PTD */
+
+/* USER CODE END PTD */
+
+/* Private define ------------------------------------------------------------*/
+/* USER CODE BEGIN PD */
+
+/* USER CODE END PD */
+
+/* Private macro -------------------------------------------------------------*/
+/* USER CODE BEGIN PM */
+
+/* USER CODE END PM */
+
+/* Private variables ---------------------------------------------------------*/
+uint32_t backup_MSP;
+uint32_t backup_IPCC_C1MR;
+uint32_t boot_after_standby;
+extern RTC_HandleTypeDef hrtc;
+/* USER CODE BEGIN PV */
+
+/* USER CODE END PV */
+
+/* Private function prototypes -----------------------------------------------*/
+uint32_t standby_boot_mng(void);
+void standby_hw_save(void);
+void standby_hw_restore(void);
+/* USER CODE BEGIN PFP */
+
+/* USER CODE END PFP */
+
+/* Private user code ---------------------------------------------------------*/
+/* USER CODE BEGIN 0 */
+
+/* USER CODE END 0 */
+
+/*******************************************************************************
+ * This part may be updated by the user
+ ******************************************************************************/
+
+  /**
+  * @brief  standby_hw_save function, saves hardware context to restore
+  * @param  None
+  * @retval None
+  */
+void standby_hw_save(void)
+{
+  backup_IPCC_C1MR = READ_REG(IPCC->C1MR);
+
+  /* USER CODE BEGIN standby_hw_save */
+
+  /* USER CODE END standby_hw_save */
+  return;
+}
+
+  /**
+  * @brief  standby_hw_restore function, restore and reconfigure hardware context
+  * @param  None
+  * @retval None
+  */
+void standby_hw_restore(void)
+{
+  /* USER CODE BEGIN standby_hw_restore_1 */
+
+  /* USER CODE END standby_hw_restore_1 */
+
+  APPD_Init();
+  Init_Exti();
+  Init_Smps();
+  HAL_Init();
+
+  HW_IPCC_Init();
+  HW_IPCC_Enable();
+  WRITE_REG(IPCC->C1MR, backup_IPCC_C1MR);
+
+  if( !LL_HSEM_1StepLock( HSEM, CFG_HW_RCC_SEMID ) )
+  {
+    LL_RCC_SetClkAfterWakeFromStop(LL_RCC_STOP_WAKEUPCLOCK_HSI);
+    LL_HSEM_ReleaseLock( HSEM, CFG_HW_RCC_SEMID, 0 );
+  }
+  LL_HSEM_ReleaseLock( HSEM, CFG_HW_PWR_STANDBY_SEMID, 0 );
+
+  /* In this user section add MX init functions present in main.c , except MX_RTC_Init() */
+  /* USER CODE BEGIN standby_hw_restore_2 */
+  
+  MX_GPIO_Init();
+  
+  /* USER CODE END standby_hw_restore_2 */
+
+  HW_TS_Init(hw_ts_InitMode_Limited, &hrtc);
+
+  LL_PWR_EnableSRAM2Retention();
+
+  /* USER CODE BEGIN standby_hw_restore_3 */
+  APPE_Led_Init();
+  APPE_Button_Init();
+  /* USER CODE END standby_hw_restore_3 */
+
+  return;
+}
+
+/*******************************************************************************
+ * Do not update code from this limit.
+ ******************************************************************************/
+
+  /**
+  * @brief  standby_boot_mng function, will restore MCU context if wakeup from standby
+  * @param  None
+  * @retval None
+  */
+uint32_t standby_boot_mng(void)
+{
+#if ( CFG_LPM_STANDBY_SUPPORTED != 0 )
+  __HAL_RCC_HSEM_CLK_ENABLE();
+  while( LL_HSEM_1StepLock( HSEM, CFG_HW_PWR_STANDBY_SEMID ) );
+
+  if( __HAL_PWR_GET_FLAG(PWR_FLAG_SB) != RESET )
+  {
+    __disable_irq( );
+
+    boot_after_standby = 1;
+  }else{
+    boot_after_standby = 0;
+
+    LL_HSEM_ReleaseLock( HSEM, CFG_HW_PWR_STANDBY_SEMID, 0 );
+  }
+#else
+  boot_after_standby = 0;
+#endif
+
+  return boot_after_standby;
+}