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SW4STM32 and SW4Linux fully supports the STM32MP1 asymmetric multicore Cortex/A7+M4 MPUs

   With System Workbench for Linux, Embedded Linux on the STM32MP1 family of MPUs from ST was never as simple to build and maintain, even for newcomers in the Linux world. And, if you install System Workbench for Linux in System Workbench for STM32 you can seamlessly develop and debug asymmetric applications running partly on Linux, partly on the Cortex-M4.
You can get more information from the ac6-tools website and download (registration required) various documents highlighting:

System Workbench for STM32

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LWiP debug output not working...

Posted by vikas on 2016-07-15 15:28

hoping someone might be able to help....
Im trying to enable debug output from LWIP , but having troubles. Im working with the NucleoF767ZI board, but I dont imagine this issue is specific.

I’ve setup a project via CubeMX, imported into SW4STM32 and things are starting to look OK, RTOS is up and running, LWIP appears on the network so is up an running also. Now I’d like to enable some debug out from LWIP.

printf has been rerouted to UART3 for debug via the virtual COM. From what I learned it should be able to use the printf when enabled and output some debug.

in the lwipopts.h I added code to enable it ;

  1. define LWIP_DEBUG 1
  2. define ETHARP_DEBUG LWIP_DBG_ON
  3. define NETIF_DEBUG LWIP_DBG_ON
  4. define ICMP_DEBUG LWIP_DBG_ON
  5. define IP_DEBUG LWIP_DBG_ON


No luck so far with this, I have to be missing something here... let me know any ideas please :-)

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Posted by hsenaniZigen on 2016-07-25 20:31

Hey vikas,

I realize my response is super late, but have you implemented the platform printf in the “cc.h” file?

Assuming you have a printf funct working, you need something like this in the “cc.h” file:

“#define LWIP_PLATFORM_DIAG(message)     do { printf message; } while(0)”

Hope this helps.

EDIT: Formatting.

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Posted by vikas on 2016-07-26 00:10

Hi,

Its quite timely actually- Id occupied myself with getting the USB OTG up and running in the meantime and just came back to wondering about the lwip debug today.

Good news, I added the line as you suggest and looks like it was all that was missing. Now I see the debug from USB and LWIP during startup as desired. Awesome!

I’ll have to add this one to my notebook, thanks for the pointer!

Vik

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