131 lines
3.9 KiB
ReStructuredText
131 lines
3.9 KiB
ReStructuredText
.. zephyr:code-sample:: telnet-console
|
|
:name: Telnet console
|
|
:relevant-api: shell_api net_core net_if net_mgmt
|
|
|
|
Access Zephyr shell over telnet.
|
|
|
|
Overview
|
|
********
|
|
|
|
This application will setup IPv4/IPv6 addresses on the default
|
|
network interface. The telnet console service is started transparently
|
|
by the kernel, along with the shell and two shell modules: net and kernel.
|
|
Once up and running, you can connect to the target over the network,
|
|
using a telnet client.
|
|
|
|
Requirements
|
|
************
|
|
|
|
- :ref:`networking_with_qemu`
|
|
|
|
|
|
Building and Running
|
|
********************
|
|
|
|
QEMU x86
|
|
========
|
|
|
|
These are instructions for how to use this sample application using
|
|
QEMU on a Linux host connected to a network with DHCP service.
|
|
|
|
To use QEMU for testing, follow the :ref:`networking_with_qemu` guide.
|
|
|
|
Run Zephyr samples/net/telnet application in QEMU:
|
|
|
|
.. zephyr-app-commands::
|
|
:zephyr-app: samples/net/telnet
|
|
:host-os: unix
|
|
:board: qemu_x86
|
|
:goals: run
|
|
:compact:
|
|
|
|
Once started, you should see you IP address details for example:
|
|
|
|
.. code-block:: console
|
|
|
|
[Setup] [INF] main: Starting Telnet sample
|
|
[Setup] [INF] setup_ipv4: IPv4 address: 192.0.2.1
|
|
[Setup] [INF] setup_ipv6: IPv6 address: 2001:db8::1
|
|
|
|
At this point, your QEMU guest is up and running. Connect to the telnet
|
|
console from your linux host this way:
|
|
|
|
.. code-block:: console
|
|
|
|
$ telnet 192.0.2.1
|
|
Telnet escape character is '^]'.
|
|
Trying 192.0.2.1...
|
|
Connected to 192.0.2.1.
|
|
Escape character is '^]'.
|
|
|
|
Now type enter, the shell prompt will appear and you can enter commands,
|
|
for example ``help``.
|
|
|
|
|
|
Freedom-K64F Board
|
|
===================
|
|
|
|
These are instructions for how to use this sample application running on a
|
|
Freedom-K64F board. Unlike running it on QEMU, :ref:`Freedom-K64F board
|
|
<frdm_k64f>` network configuration for IPv4 will rely on DHCPv4. You cad modify
|
|
the :file:`prj_frdm_k64f.conf` to set static IPv4 addresses if it is really needed.
|
|
|
|
For detailed instructions about building, flashing and using the serial console
|
|
logs, follow the :ref:`Freedom-K64F board <frdm_k64f>` documentation section.
|
|
|
|
Connect ethernet cable from :ref:`Freedom-K64F <frdm_k64f>` board to a
|
|
local network providing IPv4 address configuration via DHCPv4. Creating your own
|
|
DHCP server on a local network is not in the scope of this README.
|
|
|
|
Build Zephyr samples/net/telnet application:
|
|
|
|
.. zephyr-app-commands::
|
|
:zephyr-app: samples/net/telnet
|
|
:board: frdm_k64f
|
|
:goals: build
|
|
:compact:
|
|
|
|
Flash the resulting Zephyr binary following the :ref:`Freedom-K64F <frdm_k64f>`
|
|
board documentation noted above.
|
|
|
|
From your host computer, open a serial console to your board:
|
|
|
|
.. code-block:: console
|
|
|
|
$ sudo screen /dev/ttyACM0 115200
|
|
|
|
Plug the Ethernet cable to the :ref:`Freedom-K64F <frdm_k64f>` board.
|
|
Reset the board, you should see first on the console:
|
|
|
|
.. code-block:: console
|
|
|
|
[dev/eth_mcux] [INF] eth_0_init: Enabled 100M full-duplex mode.
|
|
[dev/eth_mcux] [DBG] eth_0_init: MAC 00:04:9f:69:c7:36
|
|
shell> [Setup] [INF] main: Starting Telnet sample
|
|
[Setup] [INF] setup_dhcpv4: Running dhcpv4 client...
|
|
[Setup] [INF] setup_ipv6: IPv6 address: 2001:db8::1
|
|
|
|
And if the DHCPv4 client succeeds, you will soon see something like:
|
|
|
|
.. code-block:: console
|
|
|
|
[Setup] [INF] ipv4_addr_add_handler: IPv4 address: 192.168.0.21
|
|
[Setup] [INF] ipv4_addr_add_handler: Lease time: 86400 seconds
|
|
[Setup] [INF] ipv4_addr_add_handler: Subnet: 255.255.255.0
|
|
[Setup] [INF] ipv4_addr_add_handler: Router: 192.168.0.1
|
|
|
|
The above result depends on your local network.
|
|
At this point you should be able to connect via telnet over the network.
|
|
On your linux host:
|
|
|
|
.. code-block:: console
|
|
|
|
$ telnet 192.168.0.21
|
|
Telnet escape character is '^]'.
|
|
Trying 192.168.0.21...
|
|
Connected to 192.168.0.1.
|
|
Escape character is '^]'.
|
|
|
|
You are now connected, and as for the UART console, you can type in
|
|
your commands and get the output through your telnet client.
|