• State
  • Locked Locked
  • Replies 3 replies
  • Subscribers 31 subscribers
  • Views 958 views
  • Users 0 members are here
Support feedback
Options
Options
Related

This thread has been locked.

If you have a related question, please click the "Ask a related question" button in the top right corner. The newly created question will be automatically linked to this question.

about tm4c freertos + lwip, use socket API problem

rubin lee
Prodigy 210 points

hi, i am a user of tm4c1294, about the examples of freertos_demo.

it used a combination of freertos + lwip + raw api, i have modify it to use the BSD socket. but i have met a problem.

in my application, i created several task, one is establish socket connection, receive ethernet data and send them to comm port; the other task is to send data to  remote server using same socket fd.

now the problem comes, after a long time continuous running, the system hangs, it may respond to ping, or just dead. 

i have checked about the interrupt priority setting ok, so where is the cause?

  • 0
    TI__Guru**** 244440 points
    Hello Rubin

    Did you check if the stack has not overflowed?

    Regards
    Amit
  • 0 in reply to Amit Ashara
    Prodigy 210 points
    i checked the freertos's stack it didn't overflow.
    first, by enable configCHECK_FOR_STACK_OVERFLOW = 2, it will enable a overflow hook function, but in debug, the program didn't gointo it; and by using INCLUDE_uxTaskGetStackHighWaterMark = 1, i check the stack depth value each time data received, no abnormal too.
    but there is an interesting thing, when i limit each socket in their own task(the same socket won't be handled in more than 1 task), the problem seems disappeared. in other words, each socket only run in their created task.
  • 0 in reply to Amit Ashara
    Prodigy 210 points
    according to my test, it seems that if the each socket only runs in the task who created them, the system will works fine, this seem that there is a problem in the internal configuration opt of lwip or freertos's mbox.