STM32F407VGT6 + STM32CubeMX + Rtos + LWIP + SW4STM32 unable Virtual COM port.

[NorfLoud]

Hello, i have got problem with basic project form STM32CubeMX. Help please.

This is my project https://drive.google.com/file/d/1nJh5805ZFjzibTgeT_i-kSdNzgrmXk0_/view?usp=sharing for STM32CubeMX

I write in SW4STM32 main.c:

* USER CODE BEGIN Includes */

#include "lwip/opt.h"

#include "lwip/arch.h"

#include "lwip/api.h"

#include "usbd_cdc_if.h"

/* USER CODE END Includes */

And I compile the project with "Optimization level -O0" and "Debug level None".

I do .dfu file with DfuFileMgr.exe and load program with DfuSeDemo.exe. Successful.

Driver Virtual Com Port for STM32 version 2.1.0.

Problem: Putty don't open Virtual Com Port. Why is this happening?

If you reduce the number of threads the port opens. But this option is not suitable.

[TDK]

Does your program hard fault as a result of more threads? When you debug it, are things still executing? Possible you just ran out of stack/heap room.

[NorfLoud]

No, the program does not have hard fault. An empty project generated by STM32CubeMX has a heap/stack overflow?

[TDK]

Doesn't look like an empty project to me. But yes, even a trivial program can overflow the stack/heap if those are set too small.

[Piranha · Accepted solution]

The more flawed code you stick together, the less are the chances of something working at all. In case of RTOS + lwIP + USB slapped together by CubeMX the chances are approaching zero.

https://community.st.com/s/question/0D50X0000BOtfhnSQB/how-to-make-ethernet-and-lwip-working-on-stm32

[NorfLoud]

What are the options? Other libraries and IDEs?

[NorfLoud]

Do you know how to detect stack/heap overflow? I haven't found any information on this topic yet...