diff --git a/Core/Src/freertos.c b/Core/Src/freertos.c
index 6844c54..2a7df6c 100644
--- a/Core/Src/freertos.c
+++ b/Core/Src/freertos.c
@@ -31,7 +31,7 @@
 #include "usart.h"
 #include "stdio.h"
 #include "navikit.h"
-
+#include "coulomb.h"
 #include "stdbool.h"
 /* USER CODE END Includes */
 
@@ -82,6 +82,13 @@ const osThreadAttr_t ButtonDetect_attributes = {
   .priority = (osPriority_t) osPriorityLow,
   .stack_size = 128 * 4
 };
+/* Definitions for CoulombRead */
+osThreadId_t CoulombReadHandle;
+const osThreadAttr_t CoulombRead_attributes = {
+  .name = "CoulombRead",
+  .priority = (osPriority_t) osPriorityLow,
+  .stack_size = 128 * 4
+};
 
 /* Private function prototypes -----------------------------------------------*/
 /* USER CODE BEGIN FunctionPrototypes */
@@ -91,6 +98,7 @@ void StartDefaultTask(void *argument);
 void StartLedBlinkTask(void *argument);
 void StartIWDGRefreshTask(void *argument);
 void StartButtonDetect(void *argument);
+void StartCoulombRead(void *argument);
 
 extern void MX_USB_DEVICE_Init(void);
 void MX_FREERTOS_Init(void); /* (MISRA C 2004 rule 8.1) */
@@ -134,6 +142,9 @@ void MX_FREERTOS_Init(void) {
   /* creation of ButtonDetect */
   ButtonDetectHandle = osThreadNew(StartButtonDetect, NULL, &ButtonDetect_attributes);
 
+  /* creation of CoulombRead */
+  CoulombReadHandle = osThreadNew(StartCoulombRead, NULL, &CoulombRead_attributes);
+
   /* USER CODE BEGIN RTOS_THREADS */
   /* add threads, ... */
 
@@ -243,7 +254,7 @@ void StartButtonDetect(void *argument)
 		  if(NaviKit.pwr_button_pushed == true)
 		  {//仍被按下
 			  if(NaviKit.system_runing == true)
-			  {//当前处于开机状态，进行关机操作
+			  {//当前处于开机状态,进行关机操作
 				  NaviKit.system_runing = false;
 
 				  HAL_GPIO_WritePin(USB2_VBUS_CTL_1_GPIO_Port,USB2_VBUS_CTL_1_Pin, GPIO_PIN_RESET);
@@ -262,7 +273,7 @@ void StartButtonDetect(void *argument)
 
 			  }
 			  else
-			  {//当前处于关机状态，进行开机操作
+			  {//当前处于关机状态,进行开机操作
 				  NaviKit.system_runing = true;
 				  Beep(40);
 				  HAL_GPIO_WritePin(BAT_RELAY_CTL_GPIO_Port ,BAT_RELAY_CTL_Pin, GPIO_PIN_SET);
@@ -296,6 +307,25 @@ void StartButtonDetect(void *argument)
   /* USER CODE END StartButtonDetect */
 }
 
+/* USER CODE BEGIN Header_StartCoulombRead */
+/**
+* @brief Function implementing the CoulombRead thread.
+* @param argument: Not used
+* @retval None
+*/
+/* USER CODE END Header_StartCoulombRead */
+void StartCoulombRead(void *argument)
+{
+  /* USER CODE BEGIN StartCoulombRead */
+  /* Infinite loop */
+  for(;;)
+  {
+	  IIC
+    osDelay(10);
+  }
+  /* USER CODE END StartCoulombRead */
+}
+
 /* Private application code --------------------------------------------------*/
 /* USER CODE BEGIN Application */
 
diff --git a/Middlewares/Coulomb/coulomb.c b/Middlewares/Coulomb/coulomb.c
new file mode 100644
index 0000000..661e626
--- /dev/null
+++ b/Middlewares/Coulomb/coulomb.c
@@ -0,0 +1,21 @@
+#include "coulomb.h"
+#include "i2c.h"
+
+bool is_coulomb_ready()
+{
+	HAL_I2C_IsDeviceReady(hi2c1,COULOMB_ADDR);
+}
+coulomb_write_reg()
+{
+	HAL_I2C_IsDeviceReady(COULOMB_ADDR);
+}
+coulomb_read_reg()
+{
+
+}
+
+
+bool coulomb_read_alcc()
+{
+	return HAL_GPIO_ReadPin(COULOMB_ALCC_GPIO_Port,COULOMB_ALCC_Pin);
+}
diff --git a/Middlewares/Coulomb/coulomb.h b/Middlewares/Coulomb/coulomb.h
new file mode 100644
index 0000000..f9baea0
--- /dev/null
+++ b/Middlewares/Coulomb/coulomb.h
@@ -0,0 +1,16 @@
+/*
+ * coulomb.h
+ *
+ *  Created on: Apr 27, 2020
+ *      Author: oarap
+ */
+
+#ifndef _COULOMB_H_
+#define _COULOMB_H_
+
+#define COULOMB_ADDR 0x64		//device address
+#define COULOMB_WRITE_CMD 0x00	//coulomb write command
+#define COULOMB_READ_CMD 0x01	//coulomb read command
+
+
+#endif /* _COULOMB_H_ */
diff --git a/NaviKit_stm32.ioc b/NaviKit_stm32.ioc
index 355461a..7aed152 100644
--- a/NaviKit_stm32.ioc
+++ b/NaviKit_stm32.ioc
@@ -26,7 +26,7 @@ FREERTOS.FootprintOK=true
 FREERTOS.INCLUDE_xTaskGetCurrentTaskHandle=1
 FREERTOS.INCLUDE_xTaskGetHandle=1
 FREERTOS.IPParameters=Tasks01,configMAX_TASK_NAME_LEN,configUSE_TICKLESS_IDLE,INCLUDE_xTaskGetCurrentTaskHandle,INCLUDE_xTaskGetHandle,configUSE_APPLICATION_TASK_TAG,FootprintOK,configUSE_IDLE_HOOK,configUSE_TICK_HOOK,configUSE_MALLOC_FAILED_HOOK,configGENERATE_RUN_TIME_STATS,configUSE_STATS_FORMATTING_FUNCTIONS,configUSE_TRACE_FACILITY
-FREERTOS.Tasks01=defaultTask,24,128,StartDefaultTask,Default,NULL,Dynamic,NULL,NULL;LedBlinkTask,8,128,StartLedBlinkTask,Default,NULL,Dynamic,NULL,NULL;IWDGRefreshTask,40,128,StartIWDGRefreshTask,Default,NULL,Dynamic,NULL,NULL;ButtonDetect,8,128,StartButtonDetect,Default,NULL,Dynamic,NULL,NULL
+FREERTOS.Tasks01=defaultTask,24,128,StartDefaultTask,Default,NULL,Dynamic,NULL,NULL;LedBlinkTask,8,128,StartLedBlinkTask,Default,NULL,Dynamic,NULL,NULL;IWDGRefreshTask,40,128,StartIWDGRefreshTask,Default,NULL,Dynamic,NULL,NULL;ButtonDetect,8,128,StartButtonDetect,Default,NULL,Dynamic,NULL,NULL;CoulombRead,8,128,StartCoulombRead,Default,NULL,Dynamic,NULL,NULL
 FREERTOS.configGENERATE_RUN_TIME_STATS=0
 FREERTOS.configMAX_TASK_NAME_LEN=32
 FREERTOS.configUSE_APPLICATION_TASK_TAG=0