FreeRTOS demo working in Linux/Ubuntu but not in Windows_Webserver on LPC1768

Kernel
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dviesca wrote on Tuesday, July 16, 2019:

I adapted this demo: https://www.freertos.org/LPC1768_CrossWorks.html to work on a Seeed Arch Pro board that uses an LPC1768 micro (the same one as the demo).
FreeRTOS version: 10.2.1
I was able to successfully compile the demo using a makefile and when I plug the board (both USB and Ethenet cables of course) to a Linux or an Ubuntu PC the demo works like a charm. However, when I do the same on a Windows PC the board doesn’t execute the demo.

What happens:

  • The “powered on” LED on the board turns on, this is normal.
  • My PC detects the board and lets me put the .bin file in it without (apparently) errors. This is expected.
  • The board keeps “unplugging” and “plugging” itself consistently every ~20 seconds (this doesn’t happen in a Linux or an Ubuntu machine). If I don’t put a .bin file to the board in that ~20 second window a .txt file appears with an error that reads “TIMEOUT”.
  • I programmed the board to blink an LED to see if it’s responding properly while executing the demo. The LED blinks fine in Linux/Ubuntu but it doesn’t turn on if it’s plugged in a Windows host.

I have read extensively but can’t seem to find anything that can explain why the demo works on Linux/Ubuntu but not on Windows except maybe that the stack size is not sufficient, however I don’t believe that’s the problem. Any ideas?

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rtel wrote on Tuesday, July 16, 2019:

This is a really old demo so I’m not really familiar with it any more,
but you say you plugged in both the USB and the Ethernet. I presume you
tried with just the USB plugged in in case the Ethernet was causing a
crash or something - so I would guess that there was something different
between the ways Windows and Linux are attempting to enumerate the USB.
Maybe I’m just stating the obvious, which is not helpful.

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dviesca wrote on Tuesday, July 16, 2019:

Yes, I have tried plugging in the USB by itself to no avail. If there is a problem enumerating the USB in the Windows host would you have any ideas or pointers as of what can be done to fix this? Thank you.