Add support for Teensy 4.1 and the QNEthernet library

.github/workflows/compile-examples.yml

@@ -36,6 +36,7 @@ jobs:
         - name: MKRWAN
         - name: Arduino_Cellular
         - name: Blues Wireless Notecard
+        - name: QNEthernet
       SKETCH_PATHS: |
         - examples/ConnectionHandlerDemo
         - examples/CheckInternetAvailabilityDemo
@@ -105,6 +106,9 @@ jobs:
           - fqbn: "rp2040:rp2040:rpipicow"
             platform-name: rp2040:rp2040
             artifact-name-suffix: rp2040-rp2040-rpipicow
+          - fqbn: "teensy:avr:teensy41"
+            platform-name: teensy:avr
+            artifact-name-suffix: teensy-avr-teensy41
 
         # Make board type-specific customizations to the matrix jobs
         include:
@@ -193,6 +197,14 @@ jobs:
                 source-url: https://github.com/earlephilhower/arduino-pico/releases/download/global/package_rp2040_index.json
             sketch-paths: |
               - examples/ConnectionHandlerDemo-Notecard
+          - board:
+              platform-name: teensy:avr
+            platforms: |
+              # Install Teensy platform via Boards Manager
+              - name: teensy:avr
+                source-url: https://www.pjrc.com/teensy/package_teensy_index.json
+            sketch-paths: |
+              - examples/ConnectionHandlerDemo
 
     steps:
       - uses: actions/checkout@v5

src/ConnectionHandlerDefinitions.h

@@ -144,6 +144,10 @@
   #define NETWORK_CONNECTED WL_CONNECTED
 #endif
 
+#if defined(ARDUINO_TEENSY41)
+  #define BOARD_HAS_ETHERNET
+#endif
+
 #endif // BOARD_HAS_NOTECARD
 
 /******************************************************************************

src/EthernetConnectionHandler.cpp

@@ -74,12 +74,19 @@ NetworkConnectionState EthernetConnectionHandler::update_handleInit()
 
   // An ip address is provided -> static ip configuration
   if (ip != INADDR_NONE) {
+#if defined(ARDUINO_TEENSY41)
+    if (Ethernet.begin(nullptr, ip,
+        IPAddress(_settings.eth.dns.type, _settings.eth.dns.bytes),
+        IPAddress(_settings.eth.gateway.type, _settings.eth.gateway.bytes),
+        IPAddress(_settings.eth.netmask.type, _settings.eth.netmask.bytes)) == 0) {
+#else
     if (Ethernet.begin(nullptr, ip,
         IPAddress(_settings.eth.dns.type, _settings.eth.dns.bytes),
         IPAddress(_settings.eth.gateway.type, _settings.eth.gateway.bytes),
         IPAddress(_settings.eth.netmask.type, _settings.eth.netmask.bytes),
         _settings.eth.timeout,
         _settings.eth.response_timeout) == 0) {
+#endif  // ARDUINO_TEENSY41
 
       DEBUG_ERROR(F("Failed to configure Ethernet, check cable connection"));
       DEBUG_VERBOSE("timeout: %d, response timeout: %d",
@@ -88,7 +95,11 @@ NetworkConnectionState EthernetConnectionHandler::update_handleInit()
     }
   // An ip address is not provided -> dhcp configuration
   } else {
+#if defined(ARDUINO_TEENSY41)
+    if (Ethernet.begin(nullptr, _settings.eth.timeout) == 0) {
+#else
     if (Ethernet.begin(nullptr, _settings.eth.timeout, _settings.eth.response_timeout) == 0) {
+#endif  // ARDUINO_TEENSY41
       DEBUG_ERROR(F("Waiting Ethernet configuration from DHCP server, check cable connection"));
       DEBUG_VERBOSE("timeout: %d, response timeout: %d",
         _settings.eth.timeout, _settings.eth.response_timeout);
@@ -110,6 +121,10 @@ NetworkConnectionState EthernetConnectionHandler::update_handleConnecting()
     return NetworkConnectionState::CONNECTED;
   }
 
+#if defined(ARDUINO_TEENSY41)
+  DEBUG_INFO(F("Connected to network"));
+  return NetworkConnectionState::CONNECTED;
+#else
   int ping_result = Ethernet.ping("time.arduino.cc");
   DEBUG_INFO(F("Ethernet.ping(): %d"), ping_result);
   if (ping_result < 0)
@@ -123,6 +138,7 @@ NetworkConnectionState EthernetConnectionHandler::update_handleConnecting()
     DEBUG_INFO(F("Connected to Internet"));
     return NetworkConnectionState::CONNECTED;
   }
+#endif  // ARDUINO_TEENSY41
 
 }
 
@@ -141,7 +157,11 @@ NetworkConnectionState EthernetConnectionHandler::update_handleConnected()
 
 NetworkConnectionState EthernetConnectionHandler::update_handleDisconnecting()
 {
+#if defined(ARDUINO_TEENSY41)
+  Ethernet.end();
+#else
   Ethernet.disconnect();
+#endif
   return NetworkConnectionState::DISCONNECTED;
 }
 

src/EthernetConnectionHandler.h

@@ -26,6 +26,10 @@
 #elif defined(ARDUINO_OPTA)
   #include <Ethernet.h>
   #include <PortentaEthernet.h>
+#elif defined(ARDUINO_TEENSY41)
+  #include <QNEthernet.h>
+
+  using namespace qindesign::network;
 #endif
 
 #ifndef BOARD_HAS_ETHERNET