0.27.0

[ssilverman]

Added

• New QNETHERNET_FLUSH_AFTER_WRITE configuration macro for flushing after every call to EthernetClient::write(). This may reduce TCP efficiency.
• Added a W5500 driver.
• Added a new EthernetHardwareStatus::EthernetTeensy41 enum value.
• New QNETHERNET_DEFAULT_HOSTNAME option.

Changed

• Made it easier to add other low-level drivers.
• Redesigned the driver interface.
• Un-deprecated EthernetClass::begin(mac, timeout) and begin(mac, ip, dns, gateway, subnet).
• Un-deprecated EthernetClass::init(sspin) and added a driver function for setting the chip select pin. The type of sspin was also changed to int.
• Removed dependency on elapsedMillis. This might help with compiling for other platforms.
• Made the library easier to compile for other platforms.
• Replaced all #define guards with #pragma once.
• All QNETHERNET_* configuration macros can now be defined in a new qnethernet_opts.h file in addition to the project build.
• Removed test dependencies on Teensy-specific things.
• Renamed t41 driver source files to use teensy41 in the name instead.
• Changed return type of EthernetUDP::beginWithReuse() and beginMulticastWithReuse() to bool.
• Using better randomness for LWIP_RAND().
• Changed attributes to use the C++ style.
• Changed the default hostname to "qnethernet-lwip".
• Renamed enet_get_mac(mac) to enet_get_system_mac(mac).

Fixed

• Added missing hostByName to keywords.txt.
• Fixed enet_output_frame() to return false if there's no output buffer.
• Fixed EthernetClient::write(buf, size) to re-check the state after a call to loop().
• Fixed util::writeMagic() mac parameter to be const.
• Fixed test_ethernet's tearDown() to remove listeners before calling Ethernet.end(). This ensures no out-of-scope variables are accessed.
• Updated StdioPrint to not use errno because stdio doesn't set this.

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This discussion was created from the release 0.27.0.