diff --git a/Application/BSP/BSP_POWER.c b/Application/BSP/BSP_POWER.c
new file mode 100644
index 0000000..26773ae
--- /dev/null
+++ b/Application/BSP/BSP_POWER.c
@@ -0,0 +1,19 @@
+
+
+#include "BSP_POWER.h"
+#include "lptim.h"
+#include "ulog.h"
+
+#define LPTIM_CLK 500     // Hz
+#define SLEEP_TIME 10     // seconds to wait
+
+void BSP_POWER_Init() {
+    uint16_t counter = LPTIM_CLK * SLEEP_TIME;
+    HAL_LPTIM_Counter_Start_IT(&hlptim4, counter);
+}
+
+
+void HAL_LPTIM_AutoReloadMatchCallback(LPTIM_HandleTypeDef *hlptim) {
+
+
+}
\ No newline at end of file
diff --git a/Application/BSP/BSP_POWER.h b/Application/BSP/BSP_POWER.h
index b3d1885..ff34a81 100644
--- a/Application/BSP/BSP_POWER.h
+++ b/Application/BSP/BSP_POWER.h
@@ -1,4 +1,9 @@
+#pragma once
 // Driver for standby and sleep managment
 // Timer for automatic standby
 // Wakeup Pin Setting
-// also shutdown procedure
\ No newline at end of file
+// also shutdown procedure
+
+void BSP_POWER_Init();
+
+
diff --git a/Application/BSP/CMakeLists.txt b/Application/BSP/CMakeLists.txt
index 14ee8b5..8b75cb2 100644
--- a/Application/BSP/CMakeLists.txt
+++ b/Application/BSP/CMakeLists.txt
@@ -2,7 +2,8 @@
 add_library(BSP STATIC 
 BSP_EE24.c
 BSP_INA.c
+BSP_POWER.c
 )
 
 target_include_directories(BSP PUBLIC ./)
-target_link_libraries(BSP PRIVATE EE24 INA219) 
+target_link_libraries(BSP PRIVATE EE24 INA219 ulog) 
diff --git a/CLS_Master.ioc b/CLS_Master.ioc
index 19f3645..fd53cad 100644
--- a/CLS_Master.ioc
+++ b/CLS_Master.ioc
@@ -171,7 +171,7 @@ I2C2.I2C_Speed_Mode=I2C_Standard
 I2C2.IPParameters=Timing,I2C_Speed_Mode,Analog_Filter,I2C_Rise_Time,I2C_Fall_Time
 I2C2.Timing=0x00D0D8FF
 KeepUserPlacement=false
-LPTIM4.ClockPrescaler=LPTIM_PRESCALER_DIV2
+LPTIM4.ClockPrescaler=LPTIM_PRESCALER_DIV64
 LPTIM4.IPParameters=ClockPrescaler
 LPUART1.BaudRate=2000000
 LPUART1.IPParameters=BaudRate
diff --git a/Core/Src/freertos.c b/Core/Src/freertos.c
index b78e7cc..abe87bb 100644
--- a/Core/Src/freertos.c
+++ b/Core/Src/freertos.c
@@ -34,6 +34,7 @@
 #include "tim.h"
 #include "BSP_EE24.h"
 #include "BSP_INA.h"
+#include "BSP_POWER.h"
 /* USER CODE END Includes */
 
 /* Private typedef -----------------------------------------------------------*/
@@ -181,6 +182,8 @@ void StartDefaultTask(void *argument)
 
   BSP_INA_Init();
 
+  BSP_POWER_Init();
+
   char  INA_LOG[72];
 
   /* Infinite loop */
diff --git a/Core/Src/lptim.c b/Core/Src/lptim.c
index a39849f..99787d4 100644
--- a/Core/Src/lptim.c
+++ b/Core/Src/lptim.c
@@ -39,7 +39,7 @@ void MX_LPTIM4_Init(void)
   /* USER CODE END LPTIM4_Init 1 */
   hlptim4.Instance = LPTIM4;
   hlptim4.Init.Clock.Source = LPTIM_CLOCKSOURCE_APBCLOCK_LPOSC;
-  hlptim4.Init.Clock.Prescaler = LPTIM_PRESCALER_DIV2;
+  hlptim4.Init.Clock.Prescaler = LPTIM_PRESCALER_DIV64;
   hlptim4.Init.Trigger.Source = LPTIM_TRIGSOURCE_SOFTWARE;
   hlptim4.Init.OutputPolarity = LPTIM_OUTPUTPOLARITY_HIGH;
   hlptim4.Init.UpdateMode = LPTIM_UPDATE_IMMEDIATE;
diff --git a/cmake_generated/cmake_generated.cmake b/cmake_generated/cmake_generated.cmake
index 560c6c3..c5480be 100644
--- a/cmake_generated/cmake_generated.cmake
+++ b/cmake_generated/cmake_generated.cmake
@@ -26,6 +26,7 @@ set(sources_SRCS ${sources_SRCS}
     ${CMAKE_CURRENT_SOURCE_DIR}/Core/Src/gpio.c
     ${CMAKE_CURRENT_SOURCE_DIR}/Core/Src/i2c.c
     ${CMAKE_CURRENT_SOURCE_DIR}/Core/Src/tim.c
+    ${CMAKE_CURRENT_SOURCE_DIR}/Core/Src/lptim.c
     ${CMAKE_CURRENT_SOURCE_DIR}/Core/Src/rng.c
     ${CMAKE_CURRENT_SOURCE_DIR}/Core/Src/rtc.c
     ${CMAKE_CURRENT_SOURCE_DIR}/Core/Src/sdmmc.c
@@ -69,6 +70,7 @@ set(sources_SRCS ${sources_SRCS}
     ${CMAKE_CURRENT_SOURCE_DIR}/Drivers/STM32H7xx_HAL_Driver/Src/stm32h7xx_hal_sd.c
     ${CMAKE_CURRENT_SOURCE_DIR}/Drivers/STM32H7xx_HAL_Driver/Src/stm32h7xx_hal_sd_ex.c
     ${CMAKE_CURRENT_SOURCE_DIR}/Drivers/STM32H7xx_HAL_Driver/Src/stm32h7xx_hal_tim.c
+    ${CMAKE_CURRENT_SOURCE_DIR}/Drivers/STM32H7xx_HAL_Driver/Src/stm32h7xx_hal_lptim.c
     ${CMAKE_CURRENT_SOURCE_DIR}/Drivers/STM32H7xx_HAL_Driver/Src/stm32h7xx_hal_tim_ex.c
     ${CMAKE_CURRENT_SOURCE_DIR}/Drivers/STM32H7xx_HAL_Driver/Src/stm32h7xx_hal_uart.c
     ${CMAKE_CURRENT_SOURCE_DIR}/Drivers/STM32H7xx_HAL_Driver/Src/stm32h7xx_hal_uart_ex.c