Libusb - Driver 64 Bit

/* Allocate a 8‑MiB buffer – well beyond 32‑bit limits */ buf = (unsigned char *)malloc(8 * 1024 * 1024); r = libusb_bulk_transfer(dev, 0x81, buf, 8 * 1024 * 1024, &transferred, 5000); if (r == 0) printf("Read %d bytes\n", transferred); else fprintf(stderr, "Transfer error %d\n", r);