Hi,
I've made a little class for serial communication, which i want to export from
c++ to python. My problem is, that this class does not know what data it's
receiving. The layer above the protocol knows how to handle the data. Here is
an example:
class Packet{
public:
uint8_t id;
uint8_t data[256];
template<typename T>
void copy_to(T *pointer){
if(sizeof(T) > sizeof(data)){
cout << "size of object you want to copy data to is
bigger then a Packtet. Do you know what you are doing?" << endl;
}
memcpy(pointer,&data,sizeof(T));
}
void copy_to_void(void *p, uint8_t size){
memcpy(p,&data,size);
}
};
struct example_data{
uint8_t ad_value;
int16_t acc_x;
int16_t acc_y;
};
I use pyplusplus to export everything. With the line
template void Packet::copy_to<example_data>(example_data*)
it works. But how do i do that, without knowing exemple_data at compile time...
I know ctypes has some pointer and dataalignmentstuff, but my understanding of
pyplusplus, boost::python and ctype's is not good enough.
Maybe it is possible to get a ctype-pointer and use the
copy_to_void()-Funktion. But i don't know how????
Can somebody help me?
Regards, Hendrik
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