Rami

Thank you for your response. The USB host will write data that is read from sensors to the Nanopi Neo Air via the USB interface. On the Nanopi Neo Air we need to read this data sent by the USB host and we need to process it (e.g. the USB host write a temperature value to the Nanopi Neo Air via USB, an algorithm running on the Nanopi Neo Air needs to read this temperature value, process it and then send it via wireless communication). Can you help me determine the right peripheral protocol for my application and how I can do it please?

Hello, I am working on a project in which we need to use a Nanopi Neo Air (based on SoC Allwinner H3). In this project we need to use the USB serial interface to communicate with another part of the project. We need to configure the Nanopi Neo Air USB interface as a peripheral USB . Nanopi Neo Air's USB serial interface is configured by default as a USB host, and in "armbian-config" there is no way to change this configuration. The USB host (which is the other part of the project) will send data to the Nanopi Neo Air whenever there is new data. Is it possible to configure the Nanopi Neo Air as a peripheral USB? How can we do this configuration (if you have documentation please)? Thanks in advance, Best regards, Rami.

Hello, Thank you for your response. Can you help me find the answers to the other questions please? Best regards, Rami.

Hello, I am working with a Nanopi Neo Air incorporating the System on Chip Allwinner H3. I need to establish a serial communication via the SPI bus, to do this I am looking for some information related to the SPI bus. Can you help me to know the following information please: - What are the min and max SPI bus frequencies that I can use with the Nanopi Neo Air (Allwinner H3)? How can I calculate them? And are there specific frequency values to use (meaning the relationship is not linear, for example: 3.84MHz, 4.34MHz, etc)? - Can the Nanopi Neo Air be configured as an SPI bus master and as a slave (not at the same time) or only as a master? - What is the maximum number of bits that we can send via the SPI bus per second? If there are several, can you please specify them? Thank you very much in advance. Best regards, Rami

Ok thank you for upur response

My problem of the ethernet connection is solved with the projectoarduino solution. I have another question about the WiringNP library: to match the version of Nanopi WiringNP library uses information found in this path /sys/class/sunxi_sys/ info_sys, I find the file info_sys only on the xenial image of FriendlyElec. Is there an equivalent file of this one in Armbian's image?

Hello, I am very sorry for my late response. lgor: Yes I have verified that with the image of armbian we can not boot directly from a SSD disk. guidol: For the wifi connection I can use the internet on my Nanopi Core but I can not connect to SSH. For the image of Neo Plus2 it is possible what will be a solution but on the site of armbian is still in test version so I can not download it (it's the same case as the image of Core2 ). So can you give me the link with which I can download the image of Neo Plus2 please? projectoarduino: I will test your solution and tell you if it works well or not.

I need a Debian kernel as it is case with your kernel stretch. And if I use a normal Neo image can I make a boot from ssd disk?

Yes I use a Nanopi Neo Core buy on the official website of FriendlyElec and likewise for the kernel it is downloaded from the site of armbian.

Yes I wrote it without space except here I made a typo.

Thank you for your response. I added the line in /boot/armbianEnv.txt using the following command: sudo echo "fdtfile = sun8i-h3-nanopi-neo.dtb" >> /boot/armbianEnv.txt and I rebooted but the problem still persists. I use the command lines because when I type sudo nano /boot/armbianEnv.txt the result is as follows: ␛) 0␛ [1; 24r␛ [m␏␛ [4l␛ [7h␛ [39;? 49m␛ [25l␛ [1c␛ [39;? 49m␛ [m␏␛ [H␛ [J␛ [22 ; 33H␛ [0; 10; 7m␏ [Reading File] ␛ [m␏␛ [22; 32H␛ [0; 10; 7m␏ [Read 10 lines] ␛ [m␏␛ [H␛ [39; 49m␛ [ 0; 10; 7m␏ GNU nanopi @ nanopiair: ~ $ 1H [m␏ No ␛ [14G ␛ [0; 10; 7m␏ ^ C␛ [m␏ Cancel␛ [K␛ [22; 63HARD changes.] ␛ [23 1H Y␛ [m␏ Yes␛ [K␛ [? 25h␛ [? 0c Spell ␛ [0; 10; 7m␏ ^ _␛ [m␏ Go To Line For wifi activation I used all of the following steps: sudo nmcli dev sudo nmcli r wifi on sudo nmcli dev wifi sudo nmcli dev wifi connect "SSID" password "PASSWORD"

Hello ladies and gentlemen, I am working on a project for which I use a Nanopi Neo Core with its mini shield. With this mini shield I encountered some problems. The first problem is when I want to know the IP address for an Ethernet connection I got the following answer: pi@nanopiair:~$ sudo ifconfig lo: flags=73<UP,LOOPBACK,RUNNING> mtu 65536 inet 127.0.0.1 netmask 255.0.0.0 inet6 ::1 prefixlen 128 scopeid 0x10<host> loop txqueuelen 1000 (Local Loopback) RX packets 0 bytes 0 (0.0 RX errors 0 dropped 0 overruns 0 frame 0 TX packets 0 bytes 0 (0.0 TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0 I have this problem only with the Armbian kernel while with that of FriendlyElec it works properly. In my case of use I need a Debian kernel. The second problem is that when I connected a wifi dongle to my mini shield and I tried to connect in SSH I can’t do it. I created an empty file in / boot called SSH and I checked that SSH is enabled but this problem still persists. The error message is as follows: Server unexpectedly closed network connection. For handling the Nanopi I use the USB-UART adapter, so the configuration interface launched with the command "sudo armbian-config" does not display correctly to better check my configurations. Can you help me solve these problems please? I thank you in advance.