From 506aed609d9cfe2c366443c94e7c98d2dec36672 Mon Sep 17 00:00:00 2001
From: YunHorn Technology <dp.s@yunhorn.com>
Date: Fri, 1 Mar 2024 16:02:02 +0800
Subject: [PATCH] try low power

---
 Core/Src/main.c         |  7 +++----
 Core/Src/stm32_lpm_if.c | 14 ++++++++++++--
 2 files changed, 15 insertions(+), 6 deletions(-)

diff --git a/Core/Src/main.c b/Core/Src/main.c
index 151b3f4..f2085de 100644
--- a/Core/Src/main.c
+++ b/Core/Src/main.c
@@ -109,16 +109,15 @@ int main(void)
   MX_GPIO_Init();
   MX_DMA_Init();
 
-  MX_I2C2_Init();
+  LED_ON;
 
+  MX_I2C2_Init();
 
   MX_LoRaWAN_Init();
 
+
   /* USER CODE BEGIN 2 */
 
-
-
-
   /* USER CODE END 2 */
 
   /* Infinite loop */
diff --git a/Core/Src/stm32_lpm_if.c b/Core/Src/stm32_lpm_if.c
index bfa47d5..0743ca7 100644
--- a/Core/Src/stm32_lpm_if.c
+++ b/Core/Src/stm32_lpm_if.c
@@ -81,14 +81,24 @@ const struct UTIL_LPM_Driver_s UTIL_PowerDriver =
 void PWR_EnterOffMode(void)
 {
   /* USER CODE BEGIN EnterOffMode_1 */
-
+	HAL_SuspendTick();
+  /* Clear Status Flag before entering STOP/STANDBY Mode */
+	LL_PWR_ClearFlag_C1STOP_C1STB();
+	//__HAL_PWR_CLEAR_FLAG(PWR_FLAG_WU);
+	HAL_PWR_EnterSTANDBYMode();
   /* USER CODE END EnterOffMode_1 */
 }
 
 void PWR_ExitOffMode(void)
 {
   /* USER CODE BEGIN ExitOffMode_1 */
-
+	HAL_ResumeTick();
+	/*
+	__HAL_PWR_CLEAR_FLAG(PWR_FLAG_SB);
+	 __HAL_PWR_CLEAR_FLAG(PWR_FLAG_WU);
+	HAL_PWR_EnableBkUpAccess();
+	__HAL_RCC_RTCAPB_CLK_ENABLE();
+	*/
   /* USER CODE END ExitOffMode_1 */
 }