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Configuration by the Serial Console‎

Another way to configure the device is via a serial console. In case of the C20 - C22 Ethernet Converters an additional USB/UART converter is needed.

For C20 - C22 converters:

  • Turn off the power of the device.
  • Connect Ethernet converter to the dedicated USB/UART converter via microUSB port.
  • Connect the USB/UART converter to the PC.
  • Open the serial console (default baudratebaud rate is 115200).
  • Press and hold the S1 button.
  • Turn on the power.
  • Wait until the ST indicator (orange LED) lights up (it should light up after red light - service mode).
  • Release the S1 button.
  • Login using user’s personal credentials or default login details.
  • If the process is successful, configuration commands can be typed into the terminal.

For C23 - C25 converters:

  • Install STM32 Virtual COM Port Driver.
  • Turn off the power of the device.
  • Connect Ethernet converter directly to the PC (the dedicated USB/UART converter is not obligatory).
  • Open the serial console (default baudratebaud rate is 115200).
  • Press and hold the S1 button.
  • Turn on the power.
  • Wait until the ST indicator (yellow LED) lights up.
  • Release the S1 button.
  • Login using user’s personal credentials or default login details.
  • If the process is successful, configuration command can be typed into the terminal.

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List of all commands

Command

Description

help

Print the help.

conn

Print active TCP connections.

eth_mac

Print or change MAC address.

exit

Close current CLI session.

http_port

Print or change default http port.

ipconfig

Print or change the network configuration.

net_stat

Print lwIP statistics.

ping

Check internet connection with the desired host.

restart

Restart the system.

reboot

Same as restart.

sys_heap_usage

Print current heap usage.

telnet_port

Print or change default telnet port.

uart

Print or change uart configuration.

uart_service

Print or change uart_service configuration.

user

Print or change user configuration.

Ports configuration commands

In terms of ports configuration it is possible to change parameters like: service, baud rate, data bits, parity, stop bits and so on. UART commands below.

  • uart
    • uart help
      Print the help message.

    • uart list
      List available uarts in the system.

      Example:
      uart list
      0: baud: 9600 bits: 8 stop_bits: 1 parity: none (service console)
      1: baud: 115200 bits: 8 stop_bits: 2 parity: odd (covered by cons.)
      2: baud: 9600 bits: 8 stop_bits: 1 parity: none
      3: baud: 1200 bits: 8 stop_bits: 2 parity: even termination: ON (R-COM)
      3: baud: 38400 bits: 8 stop_bits: 2 parity: none termination: OFF

    • uart PORT_NUMBER baud BAUD
      Set PORT_NUMBER baudrate to BAUD. BAUD value can be one of the following:
      2400, 4800, 9600, 14400, 19200, 38400, 57600, 115200.

      Example:
      uart 1 baud 9600
      WARNING: UART covered by console. Changes will take place after the reset.

    • uart PORT_NUMBER bits BITS
      Set bit length to BITS. BITS value can be one only 8.

      Example:
      uart 2 bits 8

    • uart PORT_NUMBER stop_bits STOP_BITS
      Set stop_bits length to STOP_BITS. STOP_BITS value can be only 1 or 2.

      Example:
      uart 2 stop_bits 1

    • uart PORT_NUMBER parity PARITY
      Set uart parity to PARITY. PARITY value can be one of the following: none, odd, even.

      Example:
      uart 3 parity even

    • uart PORT_NUMBER termination STATE
      Set uart termination to new STATE. STATE can be only ON or OFF.

      Example:
      uart 3 termination ON

  • uart_service
    • uart_service help
      Print the help message.

    • uart_service list
      List of uarts services status.

      Example:
      uart_service list
      1 state: ON service: Remote COM port: 1504 enc: YES
      2 state: OFF service: TCP Socket port: 1510
      3 state: OFF service: UDP Socket port: 1510

    • uart_service UART_NUMBER state STATE
      Set UART_NUMBER state to STATE. STATE value can be only ON or OFF.

      Example:
      uart_service 1 state ON

    • uart_service UART_NUMBER service SERVICE
      Set UART_NUMBER service to SERVICE. SERVICE value can be one of the following: Remote COM, 
      TCP Socket, UDP Socket.

      Example:
      uart_service 1 service TCP Socket

    • uart_service UART_NUMBER port PORT_NUMBER
      Set UART_NUMBER port to PORT_NUMBER. PORT_NUMBER value can be any in the range: 1-65535.

      Example:
      uart_service 1 port 1501

    • uart_service UART_NUMBER enc ENC_STATE
      Set UART_NUMBER encryption to ENC_STATE. ENC_STATE can be only YES or NO.

      Example:
      uart_service 1 enc YES
      If ENC_STATE is YES then it will ask for a new password for encryption.

Network settings

The following commands might be helpful to change network settings according to target LAN parameters. 

  • ipconfig
    • ipconfig addr ADDRESS
      Set IP address to ADDRESS.

      Example:
      ipconfig addr 192.168.0.10

    • ipconfig mask NETMASK
      Set subnet mask to NETMASK (in dot-decimal format).

      Example:
      ipconfig mask 255.255.255.0

    • ipconfig mask BIT_COUNT
      Set subnet mask to BIT_COUNT bits.

      Example:
      ipconfig mask 24
    • ipconfig gateway GATEWAY_IP
      Set network gateway to GATEWAY_IP.

      Example:
      ipconfig gateway 192.168.0.1

    • ipconfig dhcp enable/disable
      Enable or disable DHCP client.

      Example:
      ipconfig dhcp enable

    • ipconfig dns1 ADDRESS
      Set primary DNS to ADDRESS, disable getting DNS from DHCP if enabled.

      Example:
      ipconfig dns1 192.168.100.1

    • ipconfig dns2 ADDRESS
      Set secondary DNS to ADDRESS, disable getting DNS from DHCP if enabled.

      Example:
      ipconfig dns2 1.1.1.1

  • eth_mac
    • eth_mac help
      Print the help message.

    • eth_mac default
      Set device’s MAC address to factory-default one.

    • eth_mac set MAC_ADDR
      Set device’s MAC address to MAC_ADDR. Accepts both dash and colon-separated formats.

      Example:
      eth_mac set 01-02-03-04-05-06

      Example:
      eth_mac set 01:02:03:04:05:06

  • http_port
    • http_port help
      Print the help message.

    • http_port PORT_NUMBER
      Set http port to PORT_NUMBER. A PORT_NUMBER value must be in range: 1-65535.

      Example:
      http_port 80

    • http_port status
      Print current http port.

      Example:
      http_port status
      A current http port is 80

  • telnet_port
    • telnet_port help
      Print the help message.

    • telnet_port PORT_NUMBER
      Set Telnet port to PORT_NUMBER. A PORT_NUMBER value must be in range: 1-65535.

      Example:
      telnet_port 23

    • telnet_port status
      Print current Telnet port.

      Example:
      telnet_port status
      A current telnet port is 23

Changing username or password

To change username or password, use user command.

Available commands:

  • user help
    Print the help message.

  • user mod_name USER_NAME NEW_NAME
    Change the user name to NEW_NAME. It fails if the name is used by another user.

    Example:
    user mod_name admin john

  • user passwd USER_NAME
    Change USER_NAME's password.

    Example:
    user passwd admin
    ****** <- here is entered password, but '*' appears instead
    Note: Everyone can change the password for themselves.

Service mode

Procedure to enter service mode for C20 - C22 converters.

  • Turn off the power of the device.
  • Connect Ethernet converter to the dedicated USB/UART converter via microUSB port.
  • Connect the USB/UART converter to the PC.
  • Open the serial console (default baudratebaud rate is 115200).
  • Press and hold the S1 button.
  • Turn on the power.
  • Wait until the ST indicator (red LED) lights up.
  • Release the S1 button.
  • If the process is successful, service commands can be typed into the terminal.

Procedure to enter service mode for C23 - C25 converters.

  • Install STM32 Virtual COM Port Driver (if it was not done before).
  • Turn off the power of the device.
  • Connect Ethernet converter directly to the PC (the dedicated USB/UART converter is not obligatory).
  • Open the serial console (default baudratebaud rate is 115200).
  • Press and hold the S1 button.
  • Turn on the power.
  • Wait until the ST indicator (red LED) lights up.
  • Release the S1 button.
  • If the process is successful, service commands can be typed into the terminal.

List of commands in service mode

Command

Description

help

Print the help.

credits

Print current credits value for this device.

dev_ident

Print the device identification value.

restart

Restart the system.

serial_num

Print the serial number of this device.

version

Display the bootloader version.

xmodem

Download image to the internal Flash using xmodem.

defaults

Reset application variables to defaults.

ipconfig

Print or change the network configuration.

flash_read

Read bytes from flash memory.

md

Read bytes from memory address.

In the service mode, the “ipconfig” command can only show a last static IP address.

Factory reset

To restore default settings, type “defaults”. After that, user will be asked to type “default network” to reset the network settings as well. Then user will be informed if the process is successful.

Additional notes

In order to avoid issues like connecting to host, type “help” to get more information.

To get more details about every particular command, append “help” after each commands (example: ipconfig help).

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