adjust board structure

main/boards/kevin-box-2/axp2101.h

@@ -1,22 +1,15 @@
 #ifndef __AXP2101_H__
 #define __AXP2101_H__
 
-#include <driver/i2c_master.h>
+#include "i2c_device.h"
 
-class Axp2101 {
+class Axp2101 : public I2cDevice {
 public:
-    Axp2101() = default;
-    bool Initialize(i2c_master_bus_handle_t i2c_bus, int i2c_device_address);
+    Axp2101(i2c_master_bus_handle_t i2c_bus, uint8_t addr);
     bool IsCharging();
     bool IsChargingDone();
     int GetBatteryLevel();
     void PowerOff();
-
-private:
-    i2c_master_dev_handle_t i2c_device_ = nullptr;
-
-    void WriteReg(uint8_t reg, uint8_t value);
-    uint8_t ReadReg(uint8_t reg);
 };
 
 #endif