if (mpu_write_mem(ii, this_write, (unsigned char*)&firmware[ii]))
            return -1;

        if (mpu_read_mem(ii, this_write, cur))
            return -1;

        if (memcmp(firmware+ii, cur, this_write))
            return -2;

inv_mpu.c里的mpu_load_firmware()读写出现问题， if (memcmp(firmware+ii, cur, this_write)) 会返回，有朋友遇过一样的题题吗