diff --git a/Middlewares/Coulomb/coulomb.c b/Middlewares/Coulomb/coulomb.c
index 661e626..a2870a6 100644
--- a/Middlewares/Coulomb/coulomb.c
+++ b/Middlewares/Coulomb/coulomb.c
@@ -3,15 +3,15 @@
 
 bool is_coulomb_ready()
 {
-	HAL_I2C_IsDeviceReady(hi2c1,COULOMB_ADDR);
+//	HAL_I2C_IsDeviceReady(hi2c1,COULOMB_ADDR);
 }
-coulomb_write_reg()
+void coulomb_write_reg(uint8_t reg_addr,uint8_t *data)
 {
-	HAL_I2C_IsDeviceReady(COULOMB_ADDR);
+	HAL_I2C_Master_Transmit(&hi2c1,((COULOMB_ADDR<<1) | COULOMB_WRITE_CMD), data, 1, 100);
 }
-coulomb_read_reg()
+void coulomb_read_reg(uint8_t reg_addr,uint8_t *data)
 {
-
+	HAL_I2C_Master_Receive(&hi2c1,((COULOMB_ADDR<<1) | COULOMB_READ_CMD), data, 1, 100);
 }
 
 
diff --git a/Middlewares/Coulomb/coulomb.h b/Middlewares/Coulomb/coulomb.h
index f9baea0..1ee16aa 100644
--- a/Middlewares/Coulomb/coulomb.h
+++ b/Middlewares/Coulomb/coulomb.h
@@ -8,9 +8,17 @@
 #ifndef _COULOMB_H_
 #define _COULOMB_H_
 
+#include "stdbool.h"
+
 #define COULOMB_ADDR 0x64		//device address
 #define COULOMB_WRITE_CMD 0x00	//coulomb write command
 #define COULOMB_READ_CMD 0x01	//coulomb read command
 
 
+bool is_coulomb_ready();
+void coulomb_write_reg(uint8_t reg_addr,uint8_t *data);
+void coulomb_read_reg(uint8_t reg_addr,uint8_t *data);
+
+bool coulomb_read_alcc()
+
 #endif /* _COULOMB_H_ */