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.. currentmodule:: network
.. _network.LAN:
class LAN -- control an Ethernet module
=======================================
This class allows you to control the Ethernet interface. The PHY hardware type is board-specific.
Example usage::
import network
nic = network.LAN(0)
print(nic.ifconfig())
# now use socket as usual
...
Constructors
------------
.. class:: LAN(id, *, phy_type=<board_default>, phy_addr=<board_default>, ref_clk_mode=<board_default>)
Create a LAN driver object, initialise the LAN module using the given
PHY driver name, and return the LAN object.
Arguments are:
- *id* is the number of the Ethernet port, either 0 or 1.
- *phy_type* is the name of the PHY driver. For most board the on-board PHY has to be used and
is the default. Suitable values are port specific.
- *phy_addr* specifies the address of the PHY interface. As with *phy_type*, the hardwired value has
to be used for most boards and that value is the default.
- *ref_clk_mode* specifies, whether the data clock is provided by the Ethernet controller or
the PYH interface.
The default value is the one that matches the board. If set to ``LAN.OUT`` or ``Pin.OUT``
or ``True``, the clock is driven by the Ethernet controller, if set to ``LAN.IN``
or ``Pin.IN`` or ``False``, the clock is driven by the PHY interface.
For example, with the Seeed Arch Mix board you can use::
nic = LAN(0, phy_type=LAN.PHY_LAN8720, phy_addr=1, ref_clk_mode=Pin.IN)
Methods
-------
.. method:: LAN.active([state])
With a parameter, it sets the interface active if *state* is true, otherwise it
sets it inactive.
Without a parameter, it returns the state.
.. method:: LAN.isconnected()
Returns ``True`` if the physical Ethernet link is connected and up.
Returns ``False`` otherwise.
.. method:: LAN.status()
Returns the LAN status.
.. method:: LAN.ifconfig([(ip, subnet, gateway, dns)])
Get/set IP address, subnet mask, gateway and DNS.
When called with no arguments, this method returns a 4-tuple with the above information.
To set the above values, pass a 4-tuple with the required information. For example::
nic.ifconfig(('192.168.0.4', '255.255.255.0', '192.168.0.1', '8.8.8.8'))
.. method:: LAN.config(config_parameters)
Sets or gets parameters of the LAN interface. The only parameter that can be
retrieved is the MAC address, using::
mac = LAN.config("mac")
The parameters that can be set are:
- ``trace=n`` sets trace levels; suitable values are:
- 2: trace TX
- 4: trace RX
- 8: full trace
- ``low_power=bool`` sets or clears low power mode, valid values being ``False``
or ``True``.
Specific LAN class implementations
----------------------------------
On the mimxrt port, suitable values for the *phy_type* constructor argument are:
``PHY_KSZ8081``, ``PHY_DP83825``, ``PHY_DP83848``, ``PHY_LAN8720``, ``PHY_RTL8211F``.
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