Follow these steps to execute the application in your device:

  1. Open a serial connection using any terminal program such as Tera Term, Minicom, Coolterm, or HyperTerminal. The examples in this documentation use Minicom to work with the device command line.

    Use the following settings:

    Parameter Value

    Port

    Serial port where the device is connected

    Baud rate

    115200

    Data bits

    8

    Parity

    None

    Stop bits

    1

    Flow control

    None

  2. Log in to the device. The default login user is root without password. See How to find the IP of your device.

    Your device and your host machine must be in the same network.
  3. Transfer the application to your device using SCP in your host computer. If it is the first connection, you are prompted to continue. In this case, type yes and press Enter.

    ~> scp hello-world root@192.168.42.30:/home/root/
    The authenticity of host '192.168.42.30 (192.168.42.30)' can't be established.
    RSA key fingerprint is 46:91:93:11:31:d1:e0:b4:1e:3a:e9:fd:51:7f:bd:5a.
    Are you sure you want to continue connecting (yes/no)? yes
    Warning: Permanently added '192.168.42.30' (RSA) to the list of known hosts.
    hello-world                                                                                       100%   12KB  11.8KB/s   00:00
    ~>
  4. In the device terminal, launch the application you have just transferred. The message "Hello world!" is printed 10 times, one every second.

    ~# /home/root/hello-world
    1 - Hello world!
    2 - Hello world!
    3 - Hello world!
    4 - Hello world!
    5 - Hello world!
    6 - Hello world!
    7 - Hello world!
    8 - Hello world!
    9 - Hello world!
    10 - Hello world!
    ~#

How to find the IP of your device

You can find the IP of your device with the ifconfig command.

~# ifconfig
eth0      Link encap:Ethernet  HWaddr 00:FA:C0:00:24:01 
          inet addr:192.168.42.30  Bcast:192.168.42.255  Mask:255.255.255.0
          inet6 addr: fe80::2fa:c0ff:fe00:2401%lo/64 Scope:Link
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:719975 errors:0 dropped:0 overruns:0 frame:0
          TX packets:61809 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000
          RX bytes:111965191 (106.7 MiB)  TX bytes:9871502 (9.4 MiB)
 
lo        Link encap:Local Loopback 
          inet addr:127.0.0.1  Mask:255.0.0.0
          inet6 addr: ::1%1/128 Scope:Host
          UP LOOPBACK RUNNING  MTU:65536  Metric:1
          RX packets:58 errors:0 dropped:0 overruns:0 frame:0
          TX packets:58 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1
          RX bytes:4569 (4.4 KiB)  TX bytes:4569 (4.4 KiB)
 
wlan0     Link encap:Ethernet  HWaddr 00:FA:C0:00:24:02 
          UP BROADCAST MULTICAST  MTU:1500  Metric:1
          RX packets:0 errors:0 dropped:0 overruns:0 frame:0
          TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000
          RX bytes:0 (0.0 B)  TX bytes:0 (0.0 B)
~# ifconfig
eth0      Link encap:Ethernet  HWaddr 00:40:9D:98:A6:37 
          UP BROADCAST MULTICAST  MTU:1500  Metric:1
          RX packets:0 errors:0 dropped:0 overruns:0 frame:0
          TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000
          RX bytes:0 (0.0 B)  TX bytes:0 (0.0 B)

eth1      Link encap:Ethernet  HWaddr 00:40:9D:98:A6:36 
          inet addr:192.168.42.30  Bcast:10.101.2.255  Mask:255.255.255.0
          inet6 addr: fe80::240:9dff:fe98:a636%lo/64 Scope:Link
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:1360759 errors:0 dropped:0 overruns:0 frame:0
          TX packets:172594 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000
          RX bytes:163158464 (155.5 MiB)  TX bytes:29408643 (28.0 MiB)

lo        Link encap:Local Loopback 
          inet addr:127.0.0.1  Mask:255.0.0.0
          inet6 addr: ::1%1/128 Scope:Host
          UP LOOPBACK RUNNING  MTU:65536  Metric:1
          RX packets:22 errors:0 dropped:0 overruns:0 frame:0
          TX packets:22 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1
          RX bytes:1581 (1.5 KiB)  TX bytes:1581 (1.5 KiB)

wlan0     Link encap:Ethernet  HWaddr 00:40:9D:98:A6:38 
          UP BROADCAST MULTICAST  MTU:1500  Metric:1
          RX packets:0 errors:0 dropped:0 overruns:0 frame:0
          TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000
          RX bytes:0 (0.0 B)  TX bytes:0 (0.0 B)

In this example, the target IP address is 192.168.42.30.