script tinkering

* disable TG watchdogs
* align port forwarding with espressif examples
* show qemu output
* adding link to esp-idf example

Author: softhack007

.github/scripts/run-qemu.sh

@@ -75,12 +75,15 @@ echo "Flash image created successfully"
 # Run QEMU ESP32
 # Note: ESP32 in QEMU has limited peripheral support
 # Network configuration uses user-mode networking with port forwarding
+#    -nic user,model=open_eth,id=lo0,hostfwd=tcp:127.0.0.1:PORT_HOST-:PORT_GUEST # for port forwarding
+#    -global driver=timer.esp32.timg,property=wdt_disable,value=true # disables TG watchdog timers
 echo "Starting QEMU..."
 ${QEMU_BIN} \
     -nographic \
     -machine esp32 \
     -drive file=${FLASH_IMAGE},if=mtd,format=raw \
-    -nic user,model=open_eth,hostfwd=tcp::${HTTP_PORT}-:80 \
+    -nic user,model=open_eth,id=lo0,hostfwd=tcp::${HTTP_PORT}-:80 \
+    -global driver=timer.esp32.timg,property=wdt_disable,value=true \
     -serial mon:stdio &
 
 QEMU_PID=$!

.github/workflows/qemu-e2e-test.yml

@@ -116,7 +116,7 @@ jobs:
       - name: Start QEMU with WLED firmware in background
         run: |
           chmod +x .github/scripts/run-qemu.sh
-          bash .github/scripts/run-qemu.sh .pio/build/esp32_16MB_QEMU_debug qemu-esp32 8080 > qemu-output.log 2>&1 &
+          bash .github/scripts/run-qemu.sh .pio/build/esp32_16MB_QEMU_debug qemu-esp32 8080 2>&1 | tee qemu-output.log &
           echo "Waiting for QEMU to start and WLED to boot..."
           sleep 45
       
@@ -142,7 +142,7 @@ jobs:
           # Check for network/DHCP initialization in logs
           echo ""
           echo "=== Verifying Network Initialization ==="
-          sleep 5  # Give a bit more time for network logs
+          sleep 20  # Give a bit more time for network logs
           
           if grep -i "ETH Started\|ETH Connected\|eth: link up" qemu-output.log > /dev/null 2>&1; then
             echo "✓ Ethernet initialization detected in logs"

wled00/wled.cpp

@@ -1076,6 +1076,8 @@ bool WLED::initEthernet()
   #ifdef WLED_QEMU
   // QEMU: Skip hardware initialization - QEMU's open_eth doesn't fully emulate MAC registers
   // The ethernet hardware init crashes with LoadStorePIFAddrError in emac_ll_clock_enable_rmii_output
+  // espresiv ecample on how to init open_eth:
+  // https://github.com/espressif/esp-afr-sdk/blob/release/v4.4/examples/common_components/protocol_examples_common/connect.c - look for esp_eth_mac_new_openeth()
 
   // Don't call ETH.begin() - avoids MAC register crash
   // But manually initialize lwIP and DHCP for QEMU