Correct way to HW shutdown the ethernet port when using FreeRTOS tcp

Libraries
1

I’m working on a stm32f4 device that sends data to the server once in an hour.
I want to shut down the Ethernet off between sends. Just turning the ethernet off with the GPIO ports sometimes cause the network to not work correctly when turning back on.
I need it to work with both DHCP and static IP.

2

Hello @NoamYu,

I prefer and suggest keeping the Ethernet turned on - since IP task will only run periodically based on the value of ipconfigMAX_IP_TASK_SLEEP_TIME (~10 seconds) to check for normal housekeeping tasks.

But in case you want extremely low power consumption I see your point in switching off the Ethernet. When you turn the ethernet ON again, it needs to be re-initialized along with contacting the DHCP server to get an IP-address etc. I would suggest that once you switch the Ethernet back on again, try calling FreeRTOS_NetworkDown function. It will send an event to the IP task which in-turn would do everything necessary to bring the network back up.

Let me know if that works for you.

3

It’s working. Thanks for the help

4

Thanks for letting the forum know that it works now.
Can you indicate how you solved it? Even if it was a mistake on your side, it might help others who’ve got stuck at the same point, and look for a solution in this post.

Thanks