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Ubuntu Base Minimal Image (Xenial Xerus 16.04.3)

Ubuntu Xenial Base Minimal Image (barebone minimal image) for the NanoPi NEO2 H5.

This OS Image firmware is based on legacy kernel 3.10.65+ squeezed to get some benefits like CSI/VFE already in use by Desktop Images. This Image is made available so you can compare to and test the performance against Mainline kernel.

Please, note this is a WiP with a somewhat working DVFS cpu frequency ranging from 480 Mhz to 1008 Mhz. Idle Temp. is ~ 35ºC (- 45ºC after a few hours and ambient Temp- ~ 22ºC ) without heatsink and the board works in a reliable way.

The goal here is to have USB camera working and the board run in a stable way.

New OS Image update

  • Attempt to Support 2.8" TFT LCD (FriendlyElec) with touch
  • SPI enabled
  • small fix an optimization

use at your own risk

Legacy (kernel 3.10.65+) x Mainline (kernel 4.11.2)

Simple test with a legacy kernel (3.10.65+) versus mainline kernel (4.11.2) to see how this old kernel stacks up against modern kernel.

How this simple test was conducted:

  • 7ziped a binary file and gathered information about CPU freq and Temp in ºC
  • legacy kernel used a 4 GB sd card, mainline used 8 GB sd card
  • Time to compress this binary file must not be considered since SD CARD performance differs

Kernel 3.10.65+ with interactive governor legacy with interactive governor

Kernel 3.10.65+ with ondemand governor legacy with interactive governor

Kernel 4.11.2 with ondemand governor legacy with interactive governor

Collected Data

  • plot_legacy_kernel_ondemand_governor.txt
  • plot_mainline_kernel_ondemand_governor.txt
  • plot_legacy_kernel_interactive_governor.txt

USB camera Log

Conecting a 720p USB Camera gives the following log:

[  348.953880] ehci_irq: highspeed device connect
[  349.178887] usb 3-1: new high-speed USB device number 2 using sunxi-ehci
[  349.426710] usb 3-1: New USB device found, idVendor=1b71, idProduct=0056
[  349.426732] usb 3-1: New USB device strings: Mfr=2, Product=1, SerialNumber=0
[  349.426749] usb 3-1: Product: USB 2.0 Camera
[  349.426766] usb 3-1: Manufacturer: Sonix Technology Co., Ltd.
[  349.686481] uvcvideo: Found UVC 1.00 device USB 2.0 Camera (1b71:0056)
[  349.700509] input: USB 2.0 Camera as /devices/soc.0/1c1d000.ehci3-controller/usb3/3-1/3-1:1.0/input/input4
[  349.701669] usbcore: registered new interface driver uvcvideo
[  349.701681] USB Video Class driver (1.1.1)
[  349.767156] 2:3:1: cannot get freq at ep 0x84
[  349.786550] usbcore: registered new interface driver snd-usb-audio

Modules loaded:

Module                  Size  Used by
snd_usb_audio         130575  0
uvcvideo               66170  0
snd_usbmidi_lib        19739  1 snd_usb_audio
snd_hwdep               7121  1 snd_usb_audio
videobuf2_vmalloc       3303  1 uvcvideo
vfe_v4l2              778548  0
videobuf2_dma_contig     9798  1 vfe_v4l2
videobuf2_memops        2675  2 videobuf2_vmalloc,videobuf2_dma_contig
videobuf2_core         31309  2 uvcvideo,vfe_v4l2
sunxi_ir_rx             8543  0
vfe_io                 38940  1 vfe_v4l2
sunxi_keyboard          6854  0
ss                     34391  0

Using the 720p USB camera with mjpg-streamer with this command is quite simple:

./mjpg_streamer -i "./input_uvc.so -r 1280x720 -f 30 -q 90 -n" -o "./output_http.so -w ./www"
MJPG Streamer Version: svn rev: 
 i: Using V4L2 device.: /dev/video0
 i: Desired Resolution: 1280 x 720
 i: Frames Per Second.: 30
 i: Format............: MJPEG
 o: www-folder-path...: ./www/
 o: HTTP TCP port.....: 8080
 o: username:password.: disabled
 o: commands..........: enabled

Board is running smooth with 480Mhz and 44ºC and using ~4% Cpu. Things changed a bit when grabbing YUV and compressing to a JPEG, Cpu usage varies from 4 to 10% and one core is 100% I can get 12.5 FPS at web client side.

top - 02:06:42 up 24 min,  2 users,  load average: 0.12, 0.09, 0.11
Tasks:  93 total,   1 running,  92 sleeping,   0 stopped,   0 zombie
%Cpu(s):  0.0 us,  0.6 sy,  0.0 ni, 99.4 id,  0.0 wa,  0.0 hi,  0.0 si,  0.0 st
KiB Mem :   479800 total,   346340 free,    34868 used,    98592 buff/cache
KiB Swap:        0 total,        0 free,        0 used.   416925 avail Mem 

  PID USER      PR  NI    VIRT    RES    SHR S  %CPU %MEM     TIME+ COMMAND     
 9066 ubuntu    20   0    7648   1676   1176 R   1.3  0.3   0:00.90 top         
 2057 ubuntu    20   0  318236   8268   7824 S   1.0  1.7   0:44.47 mjpg_strea+ 
   20 root      20   0       0      0      0 S   0.3  0.0   0:00.23 kworker/2:0 
    1 root      20   0    6580   3812   2376 S   0.0  0.8   0:04.30 systemd     
    2 root      -2   0       0      0      0 S   0.0  0.0   0:00.00 kthreadd    
    3 root      20   0       0      0      0 S   0.0  0.0   0:00.27 ksoftirqd/0 
    5 root       0 -20       0      0      0 S   0.0  0.0   0:00.00 kworker/0:+ 
    6 root      20   0       0      0      0 S   0.0  0.0   0:00.40 kworker/u8+ 
    7 root      rt   0       0      0      0 S   0.0  0.0   0:00.01 migration/0 
    8 root      20   0       0      0      0 S   0.0  0.0   0:00.59 rcu_preempt 
    9 root      20   0       0      0      0 S   0.0  0.0   0:00.00 rcu_bh      
   10 root      20   0       0      0      0 S   0.0  0.0   0:00.00 rcu_sched   
   11 root      rt   0       0      0      0 S   0.0  0.0   0:00.01 watchdog/0  
   12 root      rt   0       0      0      0 S   0.0  0.0   0:00.01 watchdog/1  
   13 root      rt   0       0      0      0 S   0.0  0.0   0:00.01 migration/1 
   14 root      20   0       0      0      0 S   0.0  0.0   0:00.01 ksoftirqd/1 
   15 root      20   0       0      0      0 S   0.0  0.0   0:00.00 kworker/1:0 

Issues

  • Shutdown

    If you issue a shutdown command (sudo shutdown -h), the board actualy is put to a stand-by mode, but is safe to cut down the power. when in stand-by mode the green led will be ON, and you can remove the power cord.

GPIO

The Leds turn on when you power the board (in uboot stage), and is turned off when kernel is fully loaded.
There are the gpio(s) where you can manipulate the two Led(s) (blue and green).
normal_led and standby_led are the pins to manipulate.

To manipulate the leds:

Type in shell:

sudo su        
password: ubuntu

Turn ON

echo 1 > /sys/class/gpio_sw/normal_led/data 
echo 1 > /sys/class/gpio_sw/standby_led/data 

Turn OFF

echo 0 > /sys/class/gpio_sw/normal_led/data 
echo 0 > /sys/class/gpio_sw/standby_led/data 

Instructions to install

To flash the Image to SD CARD we need a linux box and a SD card reader/writer. This will be done in your HOST PC.

Requirements:

- We need a linux box

- Install md5sum

- PSU with at least 2.0A

- Good SD CARD, 8GB minimum (find a good and trusted brand)

- Good USB card reader (make sure you have a trusted USB card reader) or your Laptop SD CARD reader

Rebuild our new kernel, type:

    cat rootfs_neo2_rc1.tar.gz.0* > rootfs_neo2_rc1.tar.gz

Rebuild new kernel (TFT LCD support), type:

    cat rootfs_rc2.tar.gz.0* > rootfs_rc2.tar.gz

Check MD5 (must match with this):

    md5sum boot_neo2_rc1.tar.gz 
    5149c05cc5d9e25b19635e2892651775  boot_neo2_rc1.tar.gz

and

    md5sum rootfs_neo2_rc1.tar.gz
    8034aba52437086c41045bd0b621edfb  rootfs_neo2_rc1.tar.gz

After you insert you SD card into the SD CARD reader, we need to find the device: Finding your SD CARD device after inserting it, type:

    dmesg|tail

If you have a USB card reader the format would be some thing like this

    dmesg|tail
    [97286.659006] sdc: detected capacity change from 15523119104 to 0
    [99023.137526] sd 4:0:0:0: [sdc] 30318592 512-byte logical blocks: (15.5 GB/14.4 GiB)
    [99023.147516] sd 4:0:0:0: [sdc] No Caching mode page found
    [99023.147521] sd 4:0:0:0: [sdc] Assuming drive cache: write through
    [99023.162514] sd 4:0:0:0: [sdc] No Caching mode page found
    [99023.162518] sd 4:0:0:0: [sdc] Assuming drive cache: write through
    [99023.168535]  sdc: sdc1 sdc2

If you have a lpatop SD CARD reader, the format would be something like this:

    dmesg|tail
    [63376.329036] mmc0: new SDHC card at address 1234
    [63376.368234] mmcblk0: mmc0:1234 SA04G 3.67 GiB 
    [63376.368372]  mmcblk0: p1 p2

Flash New Image to SD CARD, type in shell:

    sudo chmod +x *.sh
    sudo ./burn_sdcard.sh /dev/sdc

or

    sudo chmod +x *.sh
    sudo ./burn_sdcard.sh /dev/mmcblk0

Flash New Image with FBTFT LCD support to SD CARD, type in shell:

    sudo chmod +x *.sh
    sudo ./burn_sdcard_v2.sh /dev/sdc

or

    sudo chmod +x *.sh
    sudo ./burn_sdcard_v2.sh /dev/mmcblk0

Wait until finish. Remove the SD CARD and boot you device with the SD CARD inserted and Enjoy!

First time boot:

user: ubuntu
pasw: ubuntu

*** WIP ***

History Log:

  • initial commit (readme file)
  • Updated
  • Plotting data samples
  • Instructions to install (WiP)

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H5 firmware for NanoPi NEO2 H5 (EXPERIMENTAL)

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