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  • Author Author: Jan Cumps
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Review 5: Atmel SMART SAMA5D4 Xplained Ultra - TCP/IP running

Jan Cumps

I've blogged about my first steps with the kit, Review 1: Unboxing and First Steps.

The second review was on cross compilation on a Windows machine: Review 2: Building the Libraries from Source

 

image

 

This time I connected the board to my home network.

That wasn't difficult at all.

At first I plugged the network cable from router to board while it had already booted.

The network was detected:

 

Oct 30 08:29:16 sama5d4-xplained kernel: macb f8020000.ethernet eth0: link up (100/Full)

 

I didn't get a lease. When I asked linux what my  ip address was, I only got the localhost:

 

root@sama5d4-xplained:~# ip addr show
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN group default
    link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
    inet 127.0.0.1/8 scope host lo
       valid_lft forever preferred_lft forever
2: eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP group default qlen 1000
    link/ether 2a:30:59:a4:17:10 brd ff:ff:ff:ff:ff:ff

 

 

A simple reboot with the cable connected gave me an ip address

 

root@sama5d4-xplained:~# /sbin/ifconfig
eth0      Link encap:Ethernet  HWaddr 96:73:72:46:14:ab
          inet addr:192.168.1.50  Bcast:0.0.0.0  Mask:255.255.255.0
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:30 errors:0 dropped:0 overruns:0 frame:0
          TX packets:4 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000
          RX bytes:2375 (2.3 KiB)  TX bytes:788 (788.0 B)
          Interrupt:22


lo        Link encap:Local Loopback
          inet addr:127.0.0.1  Mask:255.0.0.0
          UP LOOPBACK RUNNING  MTU:65536  Metric:1
          RX packets:10 errors:0 dropped:0 overruns:0 frame:0
          TX packets:10 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:0
          RX bytes:700 (700.0 B)  TX bytes:700 (700.0 B)

 

I was also able to ping other computers in  my network:

 

root@sama5d4-xplained:~# ping 192.168.1.27
PING 192.168.1.27 (192.168.1.27) 56(84) bytes of data.
64 bytes from 192.168.1.27: icmp_seq=1 ttl=128 time=91.3 ms
64 bytes from 192.168.1.27: icmp_seq=2 ttl=128 time=4.80 ms
64 bytes from 192.168.1.27: icmp_seq=3 ttl=128 time=2.83 ms

 

and the board shows up on my router's status page

image

 

I was able to connect to the board via a browser from another pc. It shows an "It works!" message (see the first picture).

 

Next Steps:

 

I couldn't get a telnet or ssh session into the board yet. Putty says "Network error: Connection refused"

I'll have to do some more digging to see how I can get that to work on the distro that's on the board, and what I need to do to get this running.

 

This may be my next step up in getting my cross-compiled programs installed and running on the linux distro.

Parents Comment Children
  • in reply to clem57

    , I'm doing this step by step. I've restricted to flashing the headless 'linux4sam-poky-sama5d4_xplained-4.6' linux image at the moment.

    I flashed that as per instructions and that worked fine.

    If I can't get telnet of SSH to work, I'm going to try to find out why before moving to the next image.

     

    ...

     

    Here is my details: 3.10.1+ #1 linux on Nov 5 2014

    ...

     

    root@sama5d4-xplained:~# uname -a
Linux sama5d4-xplained 3.10.0-custom #1 Thu Oct 30 16:04:45 CST 2014 armv7l GNU/Linux

  • in reply to Jan Cumps

    WINSCP works for me also... openssh iis the server portion. Also the web server is ok.

  • in reply to clem57

    , you have that HDMI demo loaded, and you have ssh running on that, right?

     

    On that headless distro I'm using the openssh daemon seems to be missing:

     

    cat /etc/ssh/sshd_config|more
# override default of no subsystems
Subsystem       sftp    /usr/lib/openssh/sftp-server

root@sama5d4-xplained:/usr/lib# cd /usr/lib/openssh
-sh: cd: /usr/lib/openssh: No such file or directory

     

    I'll  try to load that HDMI version distro...

  • in reply to clem57

    ok, ,

    I have now flashed the HDMI image. Oddly enough my board boots with a different linux version than yours - but with the same date. I get 3.10.0, you 3.10.1:

     

    Poky (Yocto Project Reference Distro) 1.6.1 sama5d4-xplained /dev/ttyS0


sama5d4-xplained login: root
root@sama5d4-xplained:~# uname -a
Linux sama5d4-xplained 3.10.0+ #1 Wed Nov 5 17:30:56 CST 2014 armv7l GNU/Linux
root@sama5d4-xplained:~#

     

    Here's the log of my load attempt:

    -I- Waiting ...
-I- TCL platform : Windows NT
-I- SAM-BA 2.15  on : windows
-I- current connection is \USBserial\COM27, \\USBserial\\COM27 to be matched 
-I- Retrieved arguments from command line :
-I- argv 0 : \USBserial\COM27
-I- argv 1 : at91sama5d4x-ek
-I- argv 2 : demo_linux_nandflash_hdmi.tcl
-I- Connection \USBserial\COM27
-I- Connection : \USBserial\COM27 (target(comType) = 0)
-I- Board : at91sama5d4x-ek
-I- Traces Level : 4
-I- target(handle) : 50740032
-I- sourcing board description file C:/Program Files (x86)/Atmel/sam-ba_2.15/sam-ba.exe/../tcl_lib/at91sama5d4x-ek/at91sama5d4x-ek.tcl
Read device Chip ID at 0xFC069040 --- get 0x8a5c07c0
-I- Found chip : at91sama5d4x_0 (Chip ID : 0x8a5c07c0)
-I- Loading applet applet-lowlevelinit-sama5d4x.bin at address 0x200000
...
-I- Complete 99%
-I- Writing: 0x40000 bytes at 0xB780000 (buffer addr : 0x20024DF4)
-I- 0x40000 bytes written by applet
-I- === DONE. ===

  • in reply to Jan Cumps

    Hooray: SSH works with that HTMI image

     

    image

     

    Thanks and !