diff --git a/README.md b/README.md
index d0b53e2..3ffcf6c 100644
--- a/README.md
+++ b/README.md
@@ -7,6 +7,7 @@
 ## Dependencies
 
 1. [zh_avr_free_rtos](http://git.zh.com.ru/avr_libraries/zh_avr_free_rtos)
+2. [zh_avr_common](http://git.zh.com.ru/avr_libraries/zh_avr_common)
 
 ## Using
 
@@ -16,6 +17,7 @@ In an existing project, run the following command to install the component:
 cd ../your_project/lib
 git clone http://git.zh.com.ru/avr_libraries/zh_avr_free_rtos
 git clone http://git.zh.com.ru/avr_libraries/zh_avr_i2c
+git clone http://git.zh.com.ru/avr_libraries/zh_avr_common
 ```
 
 In the application, add the component:
diff --git a/include/zh_avr_i2c.h b/include/zh_avr_i2c.h
index ce54695..5db9a40 100644
--- a/include/zh_avr_i2c.h
+++ b/include/zh_avr_i2c.h
@@ -5,30 +5,14 @@
 #include "avr/io.h"
 #include "avr/interrupt.h"
 #include "stdbool.h"
+#include "avr_err.h"
+#include "avr_bit_defs.h"
 
 #ifdef __cplusplus
 extern "C"
 {
 #endif
 
-	typedef enum
-	{
-		AVR_FAIL = -1,
-		AVR_OK,
-		AVR_ERR_NO_MEM,
-		AVR_ERR_INVALID_ARG,
-		AVR_ERR_INVALID_STATE,
-		AVR_ERR_INVALID_SIZE,
-		AVR_ERR_NOT_FOUND,
-		AVR_ERR_NOT_SUPPORTED,
-		AVR_ERR_TIMEOUT,
-		AVR_ERR_INVALID_RESPONSE,
-		AVR_ERR_INVALID_CRC,
-		AVR_ERR_INVALID_VERSION,
-		AVR_ERR_NOT_FINISHED,
-		AVR_ERR_NOT_ALLOWED
-	} avr_err_t;
-
 	/**
 	 * @brief Initialize I2C bus.
 	 *
diff --git a/version.txt b/version.txt
index afaf360..1cc5f65 100644
--- a/version.txt
+++ b/version.txt
@@ -1 +1 @@
-1.0.0
\ No newline at end of file
+1.1.0
\ No newline at end of file
diff --git a/zh_avr_i2c.c b/zh_avr_i2c.c
index fbc8e47..45f7377 100644
--- a/zh_avr_i2c.c
+++ b/zh_avr_i2c.c
@@ -1,15 +1,9 @@
 #include "zh_avr_i2c.h"
 
-#define ZH_ERROR_CHECK(cond, err, ...) \
-	if (!(cond))                       \
-	{                                  \
-		return err;                    \
-	}
-
-#define I2C_OK 0x01
-#define I2C_NACK 0x02
-#define I2C_COLLISION 0x04
-#define I2C_BUS_FAIL 0x08
+#define I2C_OK AVR_BIT0
+#define I2C_NACK AVR_BIT1
+#define I2C_COLLISION AVR_BIT2
+#define I2C_BUS_FAIL AVR_BIT3
 
 #define I2C_START ((1 << TWINT) | (1 << TWEN) | (1 << TWIE))
 #define I2C_MASTER_READ 1