How to read data from FTDI FT2232H using FT245 FIFO Mode

Hello dear colleagues,

I am using FTDI's FT2232H chip with MATLAB to write commands from PC to FT2232H chip and then reading the response from a hardware (an ASIC in my case) which is througed to the port via MATLAB accordingly. Here's what I am actually doing.

%% load d2xx library and open channel #0
[~,~] = loadlibrary('ftd2xx.dll', 'ftd2xx.h', 'alias', 'd2xx');
libfunctionsview d2xx;
FT_OK=0;
deviceId = uint32(0);
ftHandle = libpointer('voidPtrPtr', 0);
oc_status = calllib('d2xx', 'FT_Open', deviceId, ftHandle);
if oc_status==FT_OK
disp('Device connected & opened successfully!');
elseif oc_status==1 
 disp('Device invalid handle!'); 
elseif oc_status==2
  disp('Device not found!');
elseif oc_status==3
    disp('Device not opened!'); 
end

Mode = uint8(0); %% Reset mode
Mask = uint8(255);
bitmode_status = calllib('d2xx','FT_SetBitMode',ftHandle,Mask,Mode);
pause(0.00010); %% 10ms delay
Mode = uint8(64); %% Sync FIFO Mode
LatencyTimer = uint8(16); %% Setting Latency Timer

InTransferSize = uint32(2710);
OutTransferSize = uint32(2710);
FT_FLOW_RTS_CTS = uint8(256);
bitmode_status = calllib('d2xx','FT_SetBitMode',ftHandle,Mask,Mode);

if oc_status == FT_OK
status = calllib('d2xx','FT_SetLatencyTimer',ftHandle, LatencyTimer);  
status = calllib('d2xx','FT_SetUSBParameters',ftHandle,InTransferSize,OutTransferSize);
status = calllib('d2xx','FT_SetFlowControl',ftHandle,FT_FLOW_RTS_CTS,11,13);
end

dataTx = [55,0,0,0,0,0]; %% Test Command here
WriteBufferPtr = libpointer('voidPtr', uint8(dataTx));
bytesToWrite = uint16(numel(dataTx));
sizeTransferredPtr = libpointer('voidPtr', 0);
isEndTransaction = true;
[write_status write_buffer bytes_write num_bytes] = calllib('d2xx','FT_Write',ftHandle,WriteBufferPtr,bytesToWrite,sizeTransferredPtr);
if write_status==FT_OK
disp('Data written successfully!');
elseif write_status==1 
 disp('Data not written. Please reconnect FITPix!'); 
end

I am using D2XX library here. The problem is, whenever I try to retrieve information from write_buffer to access the data write buffer but I am getting something like libpointer as a value. How can I use the value in this variable, simply.

Moreover, how can I read the data from FT2232H chip using D2XX FT_Read command in FT245 FIFO mode? I means I simply wanna access the data in read buffer. I tried but it still gave me libpointer and not the value. Any idea and help 'ld be highly appreciated please. Thanks in advance.