diff --git a/ESP32-IDF_Temperture-Node-v2/main/hello_world_main.c b/ESP32-IDF_Temperture-Node-v2/main/hello_world_main.c
index b314cdc0c..7127adbac 100644
--- a/ESP32-IDF_Temperture-Node-v2/main/hello_world_main.c
+++ b/ESP32-IDF_Temperture-Node-v2/main/hello_world_main.c
@@ -26,108 +26,20 @@
 */
 #include <stdio.h>
 #include "esp_log.h"
-#include "driver/i2c.h"
+#include "i2c_bus.h"
 #include "bme280.h"
 
 static const char *TAG = "i2c-simple-example";
 
-#define I2C_MASTER_SCL_IO           21      /*!< GPIO number used for I2C master clock */
-#define I2C_MASTER_SDA_IO           22      /*!< GPIO number used for I2C master data  */
-#define I2C_MASTER_NUM              I2C_NUM_0                          /*!< I2C master i2c port number, the number of i2c peripheral interfaces available will depend on the chip */
-#define I2C_MASTER_FREQ_HZ          400000                     /*!< I2C master clock frequency */
-#define I2C_MASTER_TX_BUF_DISABLE   0                          /*!< I2C master doesn't need buffer */
-#define I2C_MASTER_RX_BUF_DISABLE   0                          /*!< I2C master doesn't need buffer */
-#define I2C_MASTER_TIMEOUT_MS       1000
-#define I2C_ACKS                    0x1
-#define I2C_ACKM                    0x0
-#define I2C_NOACKM                  0x1                         // I2C NACK value
-#define I2C_WRITE_BIT               I2C_MASTER_WRITE
-#define I2C_READ_BIT                 I2C_MASTER_READ
-
-#define MPU9250_SENSOR_ADDR                 0x76        /*!< Slave address of the MPU9250 sensor */
-#define MPU9250_WHO_AM_I_REG_ADDR           0xD0        /*!< Register addresses of the "who am I" register */
-
-#define MPU9250_PWR_MGMT_1_REG_ADDR         0x88        /*!< Register addresses of the power managment register */
-#define MPU9250_RESET_BIT                   7
-
-/**
- * @brief Read a sequence of bytes from a MPU9250 sensor registers
- */
-static esp_err_t mpu9250_register_read(uint8_t reg_addr, uint8_t *data, size_t len)
-{
-    return i2c_master_write_read_device(I2C_MASTER_NUM, MPU9250_SENSOR_ADDR, &reg_addr, 1, data, len, I2C_MASTER_TIMEOUT_MS / portTICK_PERIOD_MS);
-}
-
-/*static esp_err_t bme280_I2C_burst_read(uint8_t device_address, uint8_t register_address, uint8_t *registers_data, size_t count)
-{
-    int command_result = 0;
-    //unsigned char array[BME280_I2C_BUFFER_LEN];
-    unsigned char pos;
-    array[0] = register_address;
-    command_result = i2c_master_write_read_device(0, device_address, write_buffer, write_size, *array, read_size, I2C_MASTER_TIMEOUT_MS / portTICK_PERIOD_MS);
-    //error = i2c_master_write_read_device(I2C_MASTER_NUM, MPU9250_SENSOR_ADDR, &register_address, 1, registers_data, count, I2C_MASTER_TIMEOUT_MS / portTICK_PERIOD_MS);
-}*/
-
-static esp_err_t bme280_read_raw_temperature(uint8_t device_address, uint8_t *raw_temperature) {
-    // BME280_INIT_VALUE LN 136
-    // BME280_TEMPERATURE_MSB_REG 0xFA
-    // BME280_TEMPERATURE_DATA_LENGTH
-    // BME280_TEMPERATURE_DATA_SIZE
-    // I2C_MASTER_TIMEOUT_MS / portTICK_PERIOD_MS
-
-    esp_err_t command_result;
-    //unsigned char raw_temperature[BME280_TEMPERATURE_DATA_SIZE] = {0, 0, 0};
-    //command_result = i2c_master_read_from_device(0, BME280_I2C_ADDRESS1, *raw_temperature, BME280_TEMPERATURE_DATA_SIZE, I2C_MASTER_TIMEOUT_MS / portTICK_PERIOD_MS);
-    command_result = i2c_master_write_read_device(0, device_address, *raw_temperature, BME280_TEMPERATURE_DATA_SIZE, BME280_TEMPERATURE_REGISTER, 1, I2C_MASTER_TIMEOUT_MS / portTICK_PERIOD_MS);
-    return command_result;
-}
-
-/**
- * @brief Write a byte to a MPU9250 sensor register
- */
-static esp_err_t mpu9250_register_write_byte(uint8_t reg_addr, uint8_t data)
-{
-    int ret;
-    uint8_t write_buf[2] = {reg_addr, data};
-
-    ret = i2c_master_write_to_device(I2C_MASTER_NUM, MPU9250_SENSOR_ADDR, write_buf, sizeof(write_buf), I2C_MASTER_TIMEOUT_MS / portTICK_PERIOD_MS);
-
-    return ret;
-}
-
-/**
- * @brief i2c master initialization
- 
-static esp_err_t i2c_master_init(void)
-{
-    int i2c_master_port = I2C_MASTER_NUM;
-
-    i2c_config_t conf = {
-        .mode = I2C_MODE_MASTER,
-        .sda_io_num = I2C_MASTER_SDA_IO,
-        .scl_io_num = I2C_MASTER_SCL_IO,
-        .sda_pullup_en = GPIO_PULLUP_ENABLE,
-        .scl_pullup_en = GPIO_PULLUP_ENABLE,
-        .master.clk_speed = I2C_MASTER_FREQ_HZ,
-    };
-
-    i2c_param_config(i2c_master_port, &conf);
-
-    return i2c_driver_install(i2c_master_port, conf.mode, I2C_MASTER_RX_BUF_DISABLE, I2C_MASTER_TX_BUF_DISABLE, 0);
-}*/
-
-/**
- * @brief Initialize ESP32 as an I2C master device
- */
 static esp_err_t i2c_driver_initialize(void)
 {
     int i2c_master_port = 0;
 
     i2c_config_t conf = {
         .mode = I2C_MODE_MASTER,
-        .sda_io_num = GPIO_NUM_21,
+        .sda_io_num = 21,
         .sda_pullup_en = GPIO_PULLUP_ENABLE,
-        .scl_io_num = GPIO_NUM_22,
+        .scl_io_num = 22,
         .sda_pullup_en = GPIO_PULLUP_ENABLE,
         .master.clk_speed = I2C_MASTER_FREQ_HZ,
         .clk_flags= 0,