LPCXpresso IDEのトピックRe: How to communicate between two lpc1769 board using ethernet(EMAC)

How to communicate between two lpc1769 board using ethernet(EMAC)

lpcware — Wed, 15 Jun 2016 22:19:02 GMT

Content originally posted in LPCWare by aarthi on Fri Jul 29 22:25:01 MST 2011
Hi,

Now i am working with lpc1769 microcontroller. I just need to know how to communicate between two lpc1769 boards using EMAC. I also tried the EMAC example which is given the IDE but i am not able to communicate and also the code was really tuff to understand .so can anyone help me how to work in this ethernet.:confused:

Re: How to communicate between two lpc1769 board using ethernet(EMAC)

lpcware — Wed, 15 Jun 2016 22:19:03 GMT

Content originally posted in LPCWare by NXP_Europe on Sat Jul 30 15:35:17 MST 2011
Hello aarthi,

did you check on the NXP-website for example code?

see: http://ics.nxp.com/support/documents/microcontrollers/?search=ethernet&locale=en%2C%2CLatn&type=appnote&sort=date

Re: How to communicate between two lpc1769 board using ethernet(EMAC)

lpcware — Wed, 15 Jun 2016 22:19:03 GMT

Content originally posted in LPCWare by Rob65 on Sat Jul 30 23:04:48 MST 2011
It would be good if aarthi could provide some more info.
What kind of boards are you using?

With "communicating between 2 boards with EMAC" do you mean that you connect two boards via a normal ethernet connection (e.g. using the LAN8720A chip on the LPCXpresso board) or are you trying to connect two chips directly using the MAC interface (using the P0.x pins directly) ?

Rob

Re: How to communicate between two lpc1769 board using ethernet(EMAC)

lpcware — Wed, 15 Jun 2016 22:19:04 GMT

Content originally posted in LPCWare by aarthi on Sun Jul 31 20:42:37 MST 2011
I need to connect two boards via normal ethernet connection (using the LAN 8720A on the LPC XPRESSO Board)

Re: How to communicate between two lpc1769 board using ethernet(EMAC)

lpcware — Wed, 15 Jun 2016 22:19:05 GMT

Content originally posted in LPCWare by Rob65 on Sun Jul 31 23:22:31 MST 2011
In that case I would suggest to start from the EasyWeb example.
With the LPCXpresso 4.0.5 tools this can be found in NXP\LPC1000\LPC17xx\LPCXpresso176x_cmsis2.zip.
The ethmac.c in this example supports both the DP83848 (found on the MBC1700 and RDB1768 boards) and the 7820 found on the LPCXpresso board.

The EMAC example found in the MBC1700 examples projects only supports the DP83848 phy chip so that is not a good point to start from.

As soon as you get that running you have a stable base to start from (at least then you know the basic initializations and communications do work).

Rob