1 files changed, 134 insertions, 0 deletions
diff --git a/Projects/P-NUCLEO-WB55.Nucleo/Applications/BLE/BLE_MeshLightingProvisioner/Core/Src/lp_timer.c b/Projects/P-NUCLEO-WB55.Nucleo/Applications/BLE/BLE_MeshLightingProvisioner/Core/Src/lp_timer.c
new file mode 100644
index 000000000..404bb2e3b
--- /dev/null
+++ b/Projects/P-NUCLEO-WB55.Nucleo/Applications/BLE/BLE_MeshLightingProvisioner/Core/Src/lp_timer.c
@@ -0,0 +1,134 @@
+/**
+ ***************************************************************************************
+  * File Name          : lp_timer.c
+  * Description        : Low power timer to be used within Mesh Application.
+ ***************************************************************************************
+  * @attention
+  *
+  * <h2><center>&copy; Copyright (c) 2019 STMicroelectronics.
+  * All rights reserved.</center></h2>
+  *
+  * This software component is licensed by ST under BSD 3-Clause license,
+  * the "License"; You may not use this file except in compliance with the 
+  * License. You may obtain a copy of the License at:
+  *                        opensource.org/licenses/BSD-3-Clause
+  *
+  ******************************************************************************
+  */
+
+/* Includes ------------------------------------------------------------------*/  
+#include "app_common.h"
+
+#include "lp_timer.h"
+
+/* Exported variables --------------------------------------------------------*/
+/* Private function prototypes -----------------------------------------------*/
+static void LpTimerCb(void);
+
+/* Private typedef -----------------------------------------------------------*/
+typedef struct
+{
+  uint32_t LpTimeLeftOnEntry;
+  uint8_t LpTimer_Id;
+} LpTimerContext_t;
+
+/* Private define ------------------------------------------------------------*/
+/* Private macro -------------------------------------------------------------*/
+/* Private variables ---------------------------------------------------------*/
+static LpTimerContext_t LpTimerContext;
+
+/* Functions Definition ------------------------------------------------------*/
+
+/**
+ * @brief Initialize the low power timer
+ *
+ * @param  None
+ * @retval None
+ */
+void LpTimerInit(void)
+{
+  (void) HW_TS_Create(CFG_TIM_PROC_ID_ISR, &(LpTimerContext.LpTimer_Id), hw_ts_SingleShot, LpTimerCb);
+
+  return;
+}
+
+/**
+ * @brief  Request to start a low power timer ( running is stop mode )
+ *
+ * @param  time_to_sleep : in ms
+ * @retval None
+ */
+void LpTimerStart(uint32_t time_to_sleep)
+{
+  /* Converts the number of ms into hw timer tick */
+  if(time_to_sleep > 0x400000)
+  {
+    time_to_sleep = time_to_sleep / (CFG_TS_TICK_VAL);
+    time_to_sleep *= 1000;
+  }
+  else
+  {
+    time_to_sleep *= 1000;
+    time_to_sleep = time_to_sleep / (CFG_TS_TICK_VAL);
+  }
+
+  HW_TS_Start(LpTimerContext.LpTimer_Id, time_to_sleep);
+
+  /**
+   * There might be other timers already running in the timer server that may elapse
+   * before this one.
+   * Store how long before the next event so that on wakeup, it will be possible to calculate
+   * how long the tick has been suppressed
+   */
+  LpTimerContext.LpTimeLeftOnEntry = HW_TS_RTC_ReadLeftTicksToCount();
+
+  return;
+}
+
+/**
+ * @brief  Read how long the timer has run
+ *
+ * @param  None
+ * @retval The time elapsed in ms
+ */
+uint32_t LpGetElapsedTime(void)
+{
+  uint32_t return_value;
+
+  return_value = (CFG_TS_TICK_VAL) * (uint32_t)(LpTimerContext.LpTimeLeftOnEntry - HW_TS_RTC_ReadLeftTicksToCount());
+  return_value = return_value / 1000;
+
+  /**
+   * The system may have been out from another reason than the timer
+   * Stop the timer after the elapsed time is calculated other wise, HW_TS_RTC_ReadLeftTicksToCount()
+   * may return 0xFFFF ( TIMER LIST EMPTY )
+   * It does not hurt stopping a timer that exists but is not running.
+   */
+  HW_TS_Stop(LpTimerContext.LpTimer_Id);
+
+  return return_value;
+}
+
+
+/*************************************************************
+ *
+ * LOCAL FUNCTIONS
+ *
+ *************************************************************/
+/**
+ * @brief Low power timer callback
+ *
+ * @param  None
+ * @retval None
+ */
+static void LpTimerCb( void )
+{
+  /**
+   * Nothing to be done
+   */
+
+  return;
+}
+
+/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/
+