diff --git a/examples/default_example/main/xgzf4000-poll-data.c b/examples/default_example/main/xgzf4000-poll-data.c
index 6e24cd2..54c8bb0 100644
--- a/examples/default_example/main/xgzf4000-poll-data.c
+++ b/examples/default_example/main/xgzf4000-poll-data.c
@@ -1,7 +1,7 @@
 #include "esp_log.h"
 #include "xgzf4000.h"
 
-static const char *TAG = "XGZF4000_APP";
+static const char *TAG_XGZF = "XGZF4000_APP";
 
 #define I2C_XGZF4000_ADDR 0x50 // default I2C address of the XGZF4000 sensor
 #define I2C_MASTER_SCL_IO    19    // Assign the SCL pin number
@@ -25,12 +25,12 @@ static void poll_air_flow_data(void) {
 
         // Log the flow rate in the selected unit
         #ifdef CONFIG_FLOW_RATE_UNIT_LMIN
-        ESP_LOGI(TAG, "Raw Flow Rate: %u, Flow Rate: %.2f L/min", flow_rate_raw, flow_rate);
+        ESP_LOGI(TAG_XGZF, "Raw Flow Rate: %u, Flow Rate: %.2f L/min", flow_rate_raw, flow_rate);
         #elif CONFIG_FLOW_RATE_UNIT_CMH
-        ESP_LOGI(TAG, "Raw Flow Rate: %u, Flow Rate: %.2f m³/h", flow_rate_raw, flow_rate);
+        ESP_LOGI(TAG_XGZF, "Raw Flow Rate: %u, Flow Rate: %.2f m³/h", flow_rate_raw, flow_rate);
         #endif
     } else {
-        ESP_LOGE(TAG, "Failed to read air flow data");
+        ESP_LOGE(TAG_XGZF, "Failed to read air flow data");
     }
 }
 
@@ -42,13 +42,13 @@ void app_main(void) {
         .i2c_addr = I2C_XGZF4000_ADDR,
     };
 
-    ESP_ERROR_CHECK(xgzf4000_new_sensor(I2C_MASTER_NUM, I2C_SDA_PIN, I2C_SCL_PIN));
+    ESP_ERROR_CHECK(xgzf4000_new_sensor(I2C_MASTER_NUM, I2C_MASTER_SDA_IO, I2C_MASTER_SCL_IO));
 
 
-    if (init_xgzf4000_sensor() != ESP_OK) {
-        ESP_LOGE(TAG, "Failed to initialize XGZF4000 sensor");
-        return;
-    }
+    // if (init_xgzf4000_sensor() != ESP_OK) {
+    //     ESP_LOGE(TAG_XGZF, "Failed to initialize XGZF4000 sensor");
+    //     return;
+    // }
 
     while (1) {
         poll_air_flow_data();
diff --git a/include/xgzf4000.h b/include/xgzf4000.h
index 4ddc38a..1924772 100644
--- a/include/xgzf4000.h
+++ b/include/xgzf4000.h
@@ -39,7 +39,7 @@ typedef struct {
 } xgzf4000_i2c_config_t;
 
 
-esp_err_t xgzf4000_new_sensor(i2c_port_t i2c_num, int sda_pin, int scl_pin)
+esp_err_t xgzf4000_new_sensor(i2c_port_t i2c_num, int sda_pin, int scl_pin);
 
 /**
  * @brief Delete XGZF4000 device handle.
diff --git a/xgzf4000.c b/xgzf4000.c
index 00ac927..15b4ba1 100644
--- a/xgzf4000.c
+++ b/xgzf4000.c
@@ -19,6 +19,10 @@
 #include "xgzf4000.h"
 #include "xgzf4000_reg.h"
 
+#define I2C_MASTER_FREQ_HZ   100000 // I2C master frequency
+#define I2C_MASTER_RX_BUF_DISABLE 0
+#define I2C_MASTER_TX_BUF_DISABLE 0
+
 #define K_FACTOR 1000 // Proportionality factor for converting raw flow data to actual flow rate, either 1000 or 1000
 
 static esp_err_t xgzf4000_read_flow_data(xgzf4000_dev_handle_t dev, uint8_t *data, size_t len)