HDC2080: Can't read Temperature/RH data from HDC2080 with CC3220MODASF

Hi,

 We are using HDC2080 sensor with CC3220MODASF in our custom PCB. I can able to read/write  all the registers from HDC2080 and are write values but always getting the temperature of LSB=0 and MSB=0. Please any one help us to make it finish. See my code here

                
    uint16_t        temperature;
    uint8_t         txBuffer[1];
    uint8_t         rxBuffer[2];
    I2C_Handle      i2c;
    I2C_Params      i2cParams;
    I2C_Transaction i2cTransaction;

                txBuffer[0] = 0x00;
                i2cTransaction.slaveAddress = 0x40;
                i2cTransaction.writeBuf = txBuffer;
                i2cTransaction.writeCount = 1;
                while(!(I2C_transfer(i2c, &i2cTransaction)));


                usleep(7000);


                i2cTransaction.slaveAddress = 0x40;
                i2cTransaction.readBuf = rxBuffer;
                i2cTransaction.readCount = 2;
                while(!(I2C_transfer(i2c, &i2cTransaction)));

                UART_PRINT("L = %d \r\n", rxBuffer[0]);
                UART_PRINT("H = %d \r\n", rxBuffer[1]);



        temperature = rxBuffer[1];
        temperature = (temperature << 8)|rxBuffer[0];
        float newtemperature = (((float)temperature/65536) * 165)-40;
        UART_PRINT("Temperature = %f ('C) \r\n", newtemperature);

Before and after reading I am trying to read DRDY reg 0x04 its giving val 0x80 before read of temperature data and after read also.

I also tried by changing the config of MEASUREMENT CONFIGURATION reg 0x0F to 0x74 and did soft reset also by RESET&DRDY/INT CONF reg 0x0E by val 0x80.

my code:

        txBuffer[0] = 0x0E;
        txBuffer[1] = 0x80;
        i2cTransaction.slaveAddress = 0x40;
        i2cTransaction.writeBuf = txBuffer;
        i2cTransaction.writeCount = 2;
        while(!(I2C_transfer(i2c, &i2cTransaction)));


        txBuffer[0] = 0x0F;
        txBuffer[1] = 0x02;
        i2cTransaction.slaveAddress = 0x40;
        i2cTransaction.writeBuf = txBuffer;
        i2cTransaction.writeCount = 2;
        while(!(I2C_transfer(i2c, &i2cTransaction)));

Thank you