diff --git a/Adafruit_BusIO_Register.cpp b/Adafruit_BusIO_Register.cpp
index 7f8c37a..fb4735a 100644
--- a/Adafruit_BusIO_Register.cpp
+++ b/Adafruit_BusIO_Register.cpp
@@ -310,3 +310,25 @@ bool Adafruit_BusIO_RegisterBits::write(uint32_t data) {
  *    @returns The data width used when initializing the register
  */
 uint8_t Adafruit_BusIO_Register::width(void) { return _width; }
+
+/*!
+ *    @brief  Set the default width of data
+ *    @param width the default width of data read from register
+ */
+void Adafruit_BusIO_Register::setWidth(uint8_t width) { _width = width; }
+
+/*!
+ *    @brief  Set register address
+ *    @param address the address from register
+ */
+void Adafruit_BusIO_Register::setAddress(uint16_t address) {
+  _address = address;
+}
+
+/*!
+ *    @brief  Set the width of register address
+ *    @param address_width the width for register address
+ */
+void Adafruit_BusIO_Register::setAddressWidth(uint16_t address_width) {
+  _addrwidth = address_width;
+}
diff --git a/Adafruit_BusIO_Register.h b/Adafruit_BusIO_Register.h
index 278ccc8..bc27e5f 100644
--- a/Adafruit_BusIO_Register.h
+++ b/Adafruit_BusIO_Register.h
@@ -33,6 +33,7 @@ public:
   Adafruit_BusIO_Register(Adafruit_I2CDevice *i2cdevice, uint16_t reg_addr,
                           uint8_t width = 1, uint8_t byteorder = LSBFIRST,
                           uint8_t address_width = 1);
+
   Adafruit_BusIO_Register(Adafruit_SPIDevice *spidevice, uint16_t reg_addr,
                           Adafruit_BusIO_SPIRegType type, uint8_t width = 1,
                           uint8_t byteorder = LSBFIRST,
@@ -54,6 +55,10 @@ public:
 
   uint8_t width(void);
 
+  void setWidth(uint8_t width);
+  void setAddress(uint16_t address);
+  void setAddressWidth(uint16_t address_width);
+
   void print(Stream *s = &Serial);
   void println(Stream *s = &Serial);