diff --git a/inc/mlx90614.h b/inc/mlx90614.h
index 313dc72..cd02d45 100644
--- a/inc/mlx90614.h
+++ b/inc/mlx90614.h
@@ -5,6 +5,8 @@
 #ifndef MLX90614_H
 #define MLX90614_H
 
+#define I2C_EVENT_MASTER_MODE_SELECT          ((uint32_t)(I2C_FLAG_I2CBSY | I2C_FLAG_MASTER | I2C_FLAG_RBNE))
+
 void i2c_config(void);
 int read_ir_mlx90614(void);
 
diff --git a/src/mlx90614.c b/src/mlx90614.c
index 98c24be..96ae00b 100644
--- a/src/mlx90614.c
+++ b/src/mlx90614.c
@@ -5,9 +5,9 @@
 #include "mlx90614.h"
 #include "gd32e23x.h"
 #include "systick.h"
+#include <stdio.h>
 
-void i2c_config(void)
-{
+void i2c_config(void) {
     rcu_periph_clock_enable(RCU_I2C0);
     rcu_periph_clock_enable(GPIOF);
 
@@ -23,34 +23,34 @@ void i2c_config(void)
     nvic_irq_enable(I2C0_ER_IRQn, 2);
 }
 
-int read_ir_mlx90614(void)
-{
+int read_ir_mlx90614(void) {
     uint8_t Data[5];
     int inttemp_ir = 0;
     uint32_t TIMEOUT = 0;
     while (TIMEOUT < 10000 && i2c_flag_get(I2C0, I2C_FLAG_I2CBSY))
         TIMEOUT++;
-    if (TIMEOUT >= 10000)
-    {
+    if (TIMEOUT >= 10000) {
         //printf("ERROR0\r\n");
         return -410;
     }
     TIMEOUT = 0;
-    I2C_GenerateSTART(I2C0, ENABLE);
-    while (TIMEOUT < 10000 && !I2C_CheckEvent(I2C0, I2C_EVENT_MASTER_MODE_SELECT))
+    // I2C_GenerateSTART(I2C0, ENABLE);
+    i2c_start_on_bus(I2C0);
+    // while (TIMEOUT < 10000 && !I2C_CheckEvent(I2C0, I2C_EVENT_MASTER_MODE_SELECT))
+    while (TIMEOUT < 10000 && !i2c_flag_get(I2C0, I2C_EVENT_MASTER_MODE_SELECT))
         TIMEOUT++;
-    if (TIMEOUT >= 10000)
-    {
+    if (TIMEOUT >= 10000) {
         //printf("ERROR1\r\n");
         return -410;
     }
     //	I2C_AcknowledgeConfig(I2C0,DISABLE);
     TIMEOUT = 0;
-    I2C_Send7bitAddress(I2C0, 0XB4, I2C_Direction_Transmitter);
-    while (TIMEOUT < 10000 && !I2C_CheckEvent(I2C0, I2C_EVENT_MASTER_TRANSMITTER_MODE_SELECTED))
+    // I2C_Send7bitAddress(I2C0, 0XB4, I2C_Direction_Transmitter);
+    i2c_master_addressing(I2C0, 0XB4, I2C_TRANSMITTER);
+    // while (TIMEOUT < 10000 && !I2C_CheckEvent(I2C0, I2C_EVENT_MASTER_TRANSMITTER_MODE_SELECTED))
+    while (TIMEOUT < 10000 && !i2c_flag_get(I2C0, I2C_FLAG_TR))
         TIMEOUT++;
-    if (TIMEOUT >= 10000)
-    {
+    if (TIMEOUT >= 10000) {
         printf("ERROR2\r\n");
         return -410;
     }
@@ -60,8 +60,7 @@ int read_ir_mlx90614(void)
     I2C_GenerateSTART(I2C0, ENABLE);
     while (TIMEOUT < 10000 && !I2C_CheckEvent(I2C0, I2C_EVENT_MASTER_MODE_SELECT))
         TIMEOUT++;
-    if (TIMEOUT >= 10000)
-    {
+    if (TIMEOUT >= 10000) {
         //printf("ERROR3\r\n");
         return -410;
     }
@@ -69,8 +68,7 @@ int read_ir_mlx90614(void)
     I2C_Send7bitAddress(I2C0, 0XB4, I2C_Direction_Receiver);
     while (TIMEOUT < 10000 && !I2C_CheckEvent(I2C0, I2C_EVENT_MASTER_BYTE_RECEIVED))
         TIMEOUT++;
-    if (TIMEOUT >= 10000)
-    {
+    if (TIMEOUT >= 10000) {
         //printf("ERROR4\r\n");
         return -410;
     }
@@ -79,8 +77,7 @@ int read_ir_mlx90614(void)
     Data[0] = I2C_ReceiveData(I2C0);
     while (TIMEOUT < 10000 && !I2C_CheckEvent(I2C0, I2C_EVENT_MASTER_BYTE_RECEIVED))
         TIMEOUT++;
-    if (TIMEOUT >= 10000)
-    {
+    if (TIMEOUT >= 10000) {
         //printf("ERROR5\r\n");
         return -410;
     }
@@ -89,8 +86,7 @@ int read_ir_mlx90614(void)
     Data[1] = I2C_ReceiveData(I2C0);
     while (TIMEOUT < 10000 && !I2C_CheckEvent(I2C0, I2C_EVENT_MASTER_BYTE_RECEIVED))
         TIMEOUT++;
-    if (TIMEOUT >= 10000)
-    {
+    if (TIMEOUT >= 10000) {
         //printf("ERROR6\r\n");
         return -410;
     }
@@ -99,8 +95,7 @@ int read_ir_mlx90614(void)
     Data[2] = I2C_ReceiveData(I2C0);
     while (TIMEOUT < 10000 && !I2C_CheckEvent(I2C0, I2C_EVENT_MASTER_BYTE_RECEIVED))
         TIMEOUT++;
-    if (TIMEOUT >= 10000)
-    {
+    if (TIMEOUT >= 10000) {
         //printf("ERROR7\r\n");
         return -410;
     }
@@ -110,8 +105,7 @@ int read_ir_mlx90614(void)
     Data[3] = I2C_ReceiveData(I2C0);
     while (TIMEOUT < 10000 && !I2C_CheckEvent(I2C0, I2C_EVENT_MASTER_BYTE_RECEIVED))
         TIMEOUT++;
-    if (TIMEOUT >= 10000)
-    {
+    if (TIMEOUT >= 10000) {
         //printf("ERROR11\r\n");
         return -410;
     }
@@ -120,7 +114,7 @@ int read_ir_mlx90614(void)
     I2C_GenerateSTOP(I2C0, ENABLE);
     I2C_AcknowledgeConfig(I2C0, ENABLE);
     //printf("data:%x,%x,%x\r\n",Data[0],Data[1],Data[2]);
-    inttemp_ir = (int)((Data[0] + Data[1] * 255) * 0.2 - 2731.5);
+    inttemp_ir = (int) ((Data[0] + Data[1] * 255) * 0.2 - 2731.5);
     //		printf("temp:%d\r\n",inttemp_ir);