Tahank you for your reply jeremyzhou.
In my application I got data on RS485 device and i display on web using LPC1764+TLK105. After some time ping is dropped and also web-page is not display. If i go through debugger RxConsumeIndex and RxProduceIndex are same. So received data is not processed. It work fine but only for some time.
p = lpc_low_level_input(netif);
if (p == NULL) {
return;
}
In above code lpc_low_level_input(netif) function return NULL value. If i restart my device then everything is ok.
Hi Divyesh Tilava,
Thanks for your reply.
I think I need the more information.
Had you ever used the Wireshark to illustrate the communication between the PC and target device?
If yes, I was wondering if you can share with me.
Have a great day,
Ping
-----------------------------------------------------------------------------------------------------------------------
Note: If this post answers your question, please click the Correct Answer button. Thank you!
-----------------------------------------------------------------------------------------------------------------------
hello jeremyzhou,
Yes i have test it with wireshark . The ping request goes successfully but no reply from device. Will you please guide me how to allocate pbuf in Memory pool? and for that how to modified lpc17xx_40xx_emac.c file driver?
Hi Divyesh Tilava,,
Thanks for your reply.
I'd highly recommend you to refer to the Lwip demos in the LPCOpen library prior to other demos.
LPCOpen library:
LPCOpen Software for LPC17XX|NXP
I think these demos will illustrate the cooperation with the Lwip TCP/IP stack.
Hope it helps.
Have a great day,
Ping
-----------------------------------------------------------------------------------------------------------------------
Note: If this post answers your question, please click the Correct Answer button. Thank you!
-----------------------------------------------------------------------------------------------------------------------
Hi Divyesh Tilava,
Thanks for your interest in NXP Semiconductor products and for the opportunity to serve you.
I was wondering if you can describe the law of Ethernet issue, it can help to me to figure out the root cause of the issue.
Have a great day,
Ping
-----------------------------------------------------------------------------------------------------------------------
Note: If this post answers your question, please click the Correct Answer button. Thank you!
-----------------------------------------------------------------------------------------------------------------------