CCS/LMP91000EVM: Communication between LMP91000EVM and CC2650

Tool/software: Code Composer Studio

Helllo community, 

     I have been trying to communicate the LMP91000EVM with the CC2650 via I2C  and I am unfamiliar with the concepts. I am trying to configure the LMP91000 into the 3-cell mode, also knows as Amperometric mode because I am going to be conducting chemical readings. I have been looking around but I can't seem to wrap my head around as too how I will be able to do this. The following code shows my attempt at reading the status_register = 0x00, which lets me know if the LMP91000 is on. 

Void lmp91000(UArg arg0, UArg arg1)
{

    I2C_init();

    /* local variables */
    uint8_t         txBuffer[3];
    uint8_t         rxBuffer[3];
    I2C_Handle      handle;
    I2C_Params      params;
    I2C_Transaction transaction;


    /* Opening the driver */
    I2C_Params_init(&params);
    params.bitRate = I2C_400kHz;


    /* Initialize master I2C transaction structure */
    transaction.writeCount = 0;
    transaction.writeBuf = txBuffer;
    transaction.readCount = 1;
    transaction.readBuf = rxBuffer;
    transaction.slaveAddress = 0x48;

    /* Open I2C */
    handle = I2C_open(Board_I2C0, &params);

    /* Check for I2C initialization */
    if(handle == NULL)
    {
        System_printf("Error initializing\n");
    }
    else
    {
        System_printf("I2C initialized\n");
    }

    /* Checks the status of the LMP91000 */

    txBuffer[0] = LMP91000_STATUS_REG;

    bool trans = I2C_transfer(handle, &transaction);
    if(trans)
    {

        if(rxBuffer[0] == LMP91000_READY)
        {
            System_printf("LMP Ready.\n");
        }
        else
        {
            System_printf("Not Successful\n");
        }
    }
    System_flush();
}

If anyone can point me in the right direction, I have not found many guides and the datasheet has not been much help. 

Best Regards, 

     Francisco