2024-09-16 08:53 PM
Hi!
when I run the HAL example code LwIP_HTTP_Server_Netconn_RTOS I get HAL_ETH_ErrorCallback() called on every packet, but the program seems to work fine.
its this bit that gets called (so something hapenning with DMA)
if((HAL_ETH_GetDMAError(heth) & ETH_DMACSR_RBU) == ETH_DMACSR_RBU)
{
osSemaphoreRelease(RxPktSemaphore);
}
I've read as much as is humanly possible on this and other forums to see if this is normal or what the issue could be, but I have found nothing.
I've played around with using different LwIP & Ethernet buffer sizes etc, and different memory sections/protection options etc, but it wont go away, yet the program still runs fine.
Can anyone explain what is going on please.
the code I'm using is in
STM32Cube_FW_H7_V1.11.2\Projects\NUCLEO-H723ZG\Applications\LwIP\LwIP_HTTP_Server_Netconn_RTOS
thanks all,
Mark
Solved! Go to Solution.
2024-09-17 01:53 AM
Hello @MS.9,
Thank you for your contribution. The RBU problem was resolved by correcting the tail pointer calculation in this fix: [HAL][ETH] Fix the calculation of the tail pointer so that it points … · STMicroelectronics/stm32h7xx_hal_driver@ceda3ce (github.com)
With Regards,
2024-09-16 10:40 PM
> I've played around with using different LwIP & Ethernet buffer sizes etc, and different memory
> sections/protection options etc, but it wont go away, yet the program still runs fine.
Have you also increased the number of descriptors?
I don't use the HAL ETH driver and I don't know Netcon or RTOS ...
So what kind of "lwIP RX buffer scheme" is used?
2024-09-17 01:53 AM
Hello @MS.9,
Thank you for your contribution. The RBU problem was resolved by correcting the tail pointer calculation in this fix: [HAL][ETH] Fix the calculation of the tail pointer so that it points … · STMicroelectronics/stm32h7xx_hal_driver@ceda3ce (github.com)
With Regards,
2024-09-17 04:41 AM
Thanks for the quick response and fix.
I had seen this error for a long while and never really looked into it as everyhing seemed to work ok.
sad to see it go - was becoming a familiar friend