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AM6422: R5F ENET printf

wanglili 王
Intellectual 690 points
Part Number: AM6422

Tool/software:

Hello，

    

    We are developing using SDK 8.6, implementing Ethernet-based Telnet functionality on R5F under FreeRTOS. Currently, there's an issue: during implementation, when the Ethernet connection is successfully established, the system uses the printf function to send data over Ethernet. How can this printf be mapped to the Ethernet interface? Additionally, when the Ethernet connection is disconnected, printf should revert to printing via the serial port.

Is such functionality achievable?Is it feasible to directly use printf as previously implemented on other platforms in the current environment?

  • 0
    TI__Mastermind 27300 points

    Hi wanglili 王,

    Thanks for your query.

    wanglili 王 said:
    the system uses the printf function to send data over Ethernet.

    I doubt printf is used for debug logs on console. correct ? 

    Can you pint me to SDK example you are referring here ?

    wanglili 王 said:
    We are developing using SDK 8.6

    Any specific reason to use old SDK.? 

    Would suggest you to move to latest SDK for better support.

    www.ti.com/.../11.00.00.15

    Regards

    Ashwani

  • 0 in reply to Ashwani Goel
    Intellectual 690 points

    Hello，

        Currently, we have no plans to switch the SDK version since all the newly added features have been debugged on this current version, and it would take some time to adapt after switching. We will consider updating it in the future.

    If we stick with the current 8.6 version, how can we implement the functionality I proposed?

  • 0 in reply to wanglili 王
    TI__Expert 3080 points

    Hello Wanglili,

    Can you also point to the example that you are referring to where the printf function is being used to send data over Ethernet? Traditionally, the SDK had implementation to send data via serial to console. Let me check with our experts if this can be possible on system level. This would likely need additional handling in the printf module. 

    wanglili 王 said:
    Is it feasible to directly use printf as previously implemented on other platforms in the current environment?

    Can you please give a reference to previously implemented platforms?

    Thanks and regards,
    Teja.

  • 0 in reply to Teja Rowthu
    Intellectual 690 points

    Hello，

        We were using VxWorks before. When implementing Telnet previously, we directly called the printf function, and through packet capturing, we found that its output was being sent over Ethernet. Is there a way to redirect or re-mirror the output of printf to be transmitted over Ethernet?

  • 0 in reply to wanglili 王
    TI__Expert 3080 points

    Hi Wanglili,

    We haven't supported this type of feature earlier in the SDK directly to change the assignment of printf function during runtime. Let me check with our experts internally, and get back to you in a week.

    If there is anything else that you need help with, please let me know.

    Thanks and regards,
    Teja.

  • 0 in reply to Teja Rowthu
    TI__Expert 3080 points

    Hi Wanglili,

    I have checked with our experts, and I regret to inform that this functionality is not available directly in SDK. How would this impact your project? We can work together to find some feasible solution for you if you are open to sharing some details regarding your requirement and implementation.

    Thanks and regards,
    Teja.

  • 0 in reply to Teja Rowthu
    Intellectual 690 points

    Hello，

        Currently, we can replace the printf function with the function that sends data via Ethernet to achieve this functionality. Since the number of function calls is quite large, we hope to have a method that enables direct transmission over Ethernet without the need to change the function names. It is still usable at present. Thank you very much for your help.

  • 0 in reply to wanglili 王
    TI__Expert 3080 points

    Hi Wanglili,

    Unfortunately, we don't have Out of Box support for this functionality. But I am glad to know you have a solution for this. Can I mark this thread as closed if you don't have any more queries regarding this?

    Regards,
    Teja.

  • 0 in reply to Teja Rowthu
    Intellectual 690 points

    Yes，you can mark it.