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FSoui.1
Visitor II
June 2, 2022
Question

Ethernet Rx interrupt issue on STM32F7

  • June 2, 2022
  • 1 reply
  • 1195 views

Hello guys, so I'm trying to establish an Ethernet communication between my PC and STM32F746G-DISCO without using LWIP. I set the Rx mode to interrupt and configured the MPU now the problem is the interrupt only works for 4 times. After looking I found out that it goes only 4 times because that's the length of the Rx buffer. I kept looking for a solution so the data will be overwritten to the buffer once it's full but I couldn't make it. Can anyone help me with it ?

Thank you

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    Piranha
    Graduate II
    June 2, 2022

    Even, when not using lwIP, one can still look at it's related code as an example of how to use broken bloatware named HAL:

    https://github.com/STMicroelectronics/STM32CubeF7/blob/master/Projects/STM32756G_EVAL/Applications/LwIP/LwIP_HTTP_Server_Raw/Src/ethernetif.c

    If you write your own code, then look at this:

    https://github.com/lsgunth/lwip_contrib/blob/master/ports/stm32f2x7/netif/stif.c

    Also...

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

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