https://forum.armbian.com/topic/5647-nanopi-neo-wiringnp-missing-sunxi_infosys_info/

`/etc/sys_info/`
```
sunxi_platform    : Sun8iw7p1
sunxi_secure      : normal
sunxi_chipid      : 2c21020e786746240000540000000000
sunxi_chiptype    : 00000042
sunxi_batchno     : 1
sunxi_board_id    : 1(0)
```

in the file `wiringPi/boardtype_friendlyelec.c` look for the lines:

```
   if (!(f = fopen("/sys/class/sunxi_info/sys_info", "r"))) {
        if (!(f = fopen("/etc/sys_info", "r"))) {
            LOGE("open /sys/class/sunxi_info/sys_info failed.");
            return -1;
        }
    }
```