Some documentation modification

Signed-off-by: fpr <[email protected]>

Author: fpr

Diff for: libraries/LwIP/library.properties

@@ -3,7 +3,7 @@ version=2.0.0
 author=Adam Dunkels <[email protected]>
 maintainer=See url
 sentence=A Lightweight TCP/IP stack
-paragraph=lwIP is a small independent implementation of the TCP/IP protocol suite that has been developed by Adam Dunkels at the Computer and Networks Architectures (CNA) lab at the Swedish Institute of Computer Science (SICS). The focus of the lwIP TCP/IP implementation is to reduce the RAM usage while still having a full scale TCP. This making lwIP suitable for use in embedded systems with tens of kilobytes of free RAM and room for around 40 kilobytes of code ROM.category=Communication
+paragraph=lwIP is a small independent implementation of the TCP/IP protocol suite that has been developed by Adam Dunkels at the Computer and Networks Architectures (CNA) lab at the Swedish Institute of Computer Science (SICS). The focus of the lwIP TCP/IP implementation is to reduce the RAM usage while still having a full scale TCP. This making lwIP suitable for use in embedded systems with tens of kilobytes of free RAM and room for around 40 kilobytes of code ROM.
 category=Communication
 url=http://git.savannah.gnu.org/cgit/lwip.git
 architectures=stm32

Diff for: libraries/NativeEthernet/README.adoc

@@ -1,10 +1,21 @@
 = Ethernet Library for Arduino =
 
-With the Arduino Ethernet Shield, this library allows an Arduino board to connect to the internet.
+With an STM32 board with Ethernet compatibility, this library allows an STM32
+board (NUCLEO, DISCOVERY, ...) to connect to the internet.
 
 For more information about this library please visit us at
 http://www.arduino.cc/en/Reference/Ethernet
 
+== Note ==
+The library is based on LwIP, a Lightweight TCP/IP stack.
+http://git.savannah.gnu.org/cgit/lwip.git
+
+EthernetClass::maintain() in no more required to renew IP address from DHCP.
+It is done automatically by the LwIP stack in a background task.
+
+An Idle task is required to handle timer and data reception. Be careful to not
+lock the system in a loop where LwIP could never be updated.
+
 == License ==
 
 Copyright (c) 2010 Arduino LLC. All right reserved.