LPC Microcontrollers中的主题 LPC1764 +TLK105

LPC1764 +TLK105

djtilava — Thu, 09 Feb 2017 10:03:28 GMT

I am using LPC1764 +TLK105(PHY) in my application which is web server . It is running good for some times after that it does not give ping also. WHile communication to other devices on UART is running ok . So what will be the issue?#LPC1764 #ETHERNET

Re: LPC1764 +TLK105

jeremyzhou — Tue, 14 Feb 2017 01:48:35 GMT

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

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Re: LPC1764 +TLK105

djtilava — Wed, 15 Feb 2017 09:35:29 GMT

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.

Re: LPC1764 +TLK105

jeremyzhou — Wed, 22 Feb 2017 02:35:51 GMT

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

Re: LPC1764 +TLK105

djtilava — Thu, 23 Feb 2017 04:29:45 GMT

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?

Re: LPC1764 +TLK105

jeremyzhou — Thu, 23 Feb 2017 08:50:10 GMT

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