TELNET Console
Overview
See Telnet console for the original description.
Requirements
This sample application negotiate IPv4 address from a DHCPv4 server running everywhere in your local network.
The 10/100 Ethernet MAC already configured in RMII/MII mode with MDIO using the
&macdevicetree label.
Building and Running
Build and flash TELNET Console as follows:
west build -b magpie_f777ni -p -d build/telnet-magpie_f777ni zephyr/samples/net/telnet -- -DCONFIG_NET_DHCPV4=y -DCONFIG_NET_LOG=y -DCONFIG_LOG=y -DCONFIG_GPIO_SHELL=y -DCONFIG_I2C_SHELL=y
west flash -d build/telnet-magpie_f777ni
Once DHCPv4 client address negotiation completed with server, details are shown on the console like this:
To verify the Zephyr application clients are running, bind the TELNET server to the network interface, and has received an IPv4 address by typing on Linux host:
$ ping -c3 192.168.10.197
PING 192.168.10.197 (192.168.10.197) 56(84) bytes of data.
64 bytes from 192.168.10.197: icmp_seq=1 ttl=64 time=0.303 ms
64 bytes from 192.168.10.197: icmp_seq=2 ttl=64 time=0.261 ms
64 bytes from 192.168.10.197: icmp_seq=3 ttl=64 time=0.264 ms
--- 192.168.10.197 ping statistics ---
3 packets transmitted, 3 received, 0% packet loss, time 2052ms
rtt min/avg/max/mdev = 0.261/0.276/0.303/0.019 ms
$ nmap -Pn 192.168.10.197
Starting Nmap 7.80 ( https://nmap.org ) at … … …
Nmap scan report for 192.168.10.197
Host is up (0.0018s latency).
Not shown: 999 closed ports
PORT STATE SERVICE
23/tcp open telnet
Nmap done: 1 IP address (1 host up) scanned in 4.33 seconds
At this point you should be able to connect via telnet over the network.
On your Linux host:
$ telnet 192.168.10.197
Trying 192.168.10.197...
Connected to 192.168.10.197.
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. Now type enter, the
shell prompt will appear and you can enter commands, for example help
or kernel version.
~$ kernel version
Zephyr version 4.1.0
~$ bridle version
Bridle version 4.1.0
~$ device list
devices:
- rcc@40023800 (READY)
DT node labels: rcc
- reset-controller (READY)
DT node labels: rctl
- interrupt-controller@40013c00 (READY)
DT node labels: exti
- gpio@40022800 (READY)
DT node labels: gpiok
- gpio@40022400 (READY)
DT node labels: gpioj
- gpio@40022000 (READY)
DT node labels: gpioi
- gpio@40021C00 (READY)
DT node labels: gpioh
- gpio@40021800 (READY)
DT node labels: gpiog
- gpio@40021400 (READY)
DT node labels: gpiof
- gpio@40021000 (READY)
DT node labels: gpioe
- gpio@40020C00 (READY)
DT node labels: gpiod
- gpio@40020800 (READY)
DT node labels: gpioc
- gpio@40020400 (READY)
DT node labels: gpiob
- gpio@40020000 (READY)
DT node labels: gpioa
- rng@50060800 (READY)
DT node labels: rng
- serial@40007800 (READY)
DT node labels: uart7
- serial@40004c00 (READY)
DT node labels: uart4 tmph_serial1 tmph_serial
- rtc@40002800 (READY)
DT node labels: rtc
- i2c@40006000 (READY)
DT node labels: i2c4 tmph_i2c1 tmph_i2c
- i2c@40005800 (READY)
DT node labels: i2c2
- spi@40013400 (READY)
DT node labels: spi4 tmph_spi1 tmph_spi
- ethernet@40028000 (READY)
DT node labels: mac
Simple GPIO Operations
Switch user LED 2 on and off
~$ gpio get gpio@40021800 12
0
~$ gpio conf gpio@40021800 12 oh0
~$ gpio set gpio@40021800 12 1
~$ gpio set gpio@40021800 12 0
~$ gpio blink gpio@40021800 12
Hit any key to exit
Simple I2C Operations
Scan I2C bus 2
~$ i2c scan i2c@40005800
0 1 2 3 4 5 6 7 8 9 a b c d e f
00: -- -- -- -- -- -- -- -- -- -- -- --
10: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
20: 20 21 -- -- -- -- -- -- -- -- -- -- -- -- -- --
30: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
40: 40 41 42 43 44 45 46 -- -- -- -- -- -- -- -- --
50: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
60: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
70: -- -- -- -- -- -- -- --
9 devices found on i2c@40005800