#include <stdio.h>
#include "esp_log.h"
#include "driver/i2c.h"

static const char *TAG = "i2c-simple-example";

#define I2C_MASTER_SCL_IO 32 /*!< GPIO number used for I2C master clock /
#define I2C_MASTER_SDA_IO 26 /!< GPIO number used for I2C master data /
#define I2C_MASTER_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 MPU9250_SENSOR_ADDR 0x61 /*!< Slave address of the MPU9250 sensor /
#define MPU9250_WHO_AM_I_REG_ADDR 0x61 /!< Register addresses of the "who am I" register */

#define MPU9250_PWR_MGMT_1_REG_ADDR 0x6B /*!< 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)
  {
  esp_err_t err = ESP_OK;
  err = i2c_master_write_read_device(I2C_NUM_0, MPU9250_SENSOR_ADDR, &reg_addr, 1, data, len, I2C_MASTER_TIMEOUT_MS / portTICK_RATE_MS);
  return err;
  }
  static esp_err_t i2c_master_init(void)
  {
  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_NUM_0, &conf);
  i2c_set_timeout(I2C_NUM_0, 400000);
  return i2c_driver_install(I2C_NUM_0, conf.mode, I2C_MASTER_RX_BUF_DISABLE, I2C_MASTER_TX_BUF_DISABLE, 0);
  }

void app_main(void)
{
uint8_t data[2];
ESP_ERROR_CHECK(i2c_master_init());
ESP_LOGI(TAG, "I2C initialized successfully");

while (1)
{
    esp_err_t err = mpu9250_register_read(0x00, data, 1);
    if (err != ESP_OK)
    {
        int timevalue;
        i2c_get_timeout(I2C_NUM_0, &timevalue);
        ESP_LOGI(TAG, "time value is : %d  err[%d]", timevalue, err);
    }
    ESP_LOGI(TAG, "WHO_AM_I = %X", data[0]);
    vTaskDelay(2000 / portTICK_PERIOD_MS);
}

ESP_ERROR_CHECK(i2c_driver_delete(I2C_NUM_0));
ESP_LOGI(TAG, "I2C unitialized successfully");

}

Note : interestingly i am able to read and write the Pb hub using the arduino ide wire library so i am confused what could be the issue.
i have go through all the documentation and help i could get online to resolve the issue but i am unable to solve it. any help in this regard would be highly appreciated.