Binding class methods with pointer arguments

[codenio]

Hi all, I am trying to bind a cpp http module using pybind11.

Declaration of cpp class method

namespace INTR
{
	class Comm : public Transport_IF, public _COM::_COMM
	{
              bool isOnline = false;
	      public:
                void StreamRead(uint8_t* buffer, uint32_t len);
        };
}

py::class_<Comm>(m, "Comm")
.def("StreamRead", &Comm::StreamRead)
;

using the below python code

from cppcomm import Comm as comm
receiveBuffLen = 900
receiveBuff = bytearray(receiveBuffLen)
client = comm.getInstance(IP, PORT)
client.StreamRead(receiveBuff, receiveBuffLen)

gives the following error

TypeError: StreamRead(): incompatible function arguments. The following argument types are supported:
    1. (self: cppcomm.Comm, arg0: int, arg1: int) -> None

Unable to find a way to specify the argument type as pointer instead of int.
could someone help here by providing poniters/urls to relevant documents for getting this resolved.

Thanks
codenio