Hi RAc,
I’ve sorted out the issue with needing to use Timer 2 rather than SysTick to drive calling xPortSysTickHandler(). That was the same issue that was reported in post startup-freertos-9-0-0-stm32f4-interrupt-before-starting-scheduler-hang/7105 on these forums (it won’t let me post a link). As a result I have one less hardware interrupt being fired.
The output of the latest test shows:
--- 192.168.10.179 ping statistics ---
807 packets transmitted, 597 packets received, 26.0% packet loss
round-trip min/avg/max/stddev = 0.406/0.552/0.740/0.056 ms
In the debug output there is one entry Network buffers: 0 lowest 0 which is concerning but I doubt that accounts for 210 packets being lost.
I’ll break Wireshark out tomorrow and see if it gives any clues!
-Andy.