fopen in DAvE 4.3 (erno = 88) Socket operation on non-socket

Hello everyone,

I'm working with a XMC 4700, I'm trying to use the fopen() as it follows:

const char* pFileName = "SOMETHING.BIN";

FILE* fp = fopen(pFileName, "w");

char * cadena = strerror(errno);

Instead of a direction, the value a I get from fp = 0, from cadena = "Function not implemented" and from errno = 88 (Socket operation on non-socket).

I don't know what I'm doing wrong heir, so I ask for your help.

I thank you in advance.

Best regards

Alan