topic Ethernet Code For LPC2478 controller using LPC24xx.h file on LPCXpresso IDE in LPC Microcontrollers

Ethernet Code For LPC2478 controller using LPC24xx.h file on LPCXpresso IDE

VijayaJangam1 — Wed, 15 Oct 2025 09:51:12 GMT

Ethernet Code For LPC2478 controller using LPC24xx.h file on LPCXpresso IDE work code Used PHY chip for Ethernet communication and use SRAM it gets problem for Ethernet communication in IDE give me solution. my all files are attached here please check and give me corrections and why this sys_calls.c file is used

Re: Ethernet Code For LPC2478 controller using LPC24xx.h file on LPCXpresso IDE

Harry_Zhang — Fri, 17 Oct 2025 08:00:03 GMT

Hi @VijayaJangam1

I have checked your main.c.

If you're using external SRAM for buffers (tx_buf), make sure:

External memory is enabled and initialized before using it.

Your code does not include PHY register initialization via MDIO/MDC.

Harry

Re: Ethernet Code For LPC2478 controller using LPC24xx.h file on LPCXpresso IDE

VijayaJangam1 — Sat, 18 Oct 2025 10:16:44 GMT

Ethernet Code using intrnal SRAm base_RAM_ETH_16 = 0x7fe00000 ; /* RAM_ETH_16 */
__base_RAM2 = 0x7fe00000 ; /* RAM2 */
__top_RAM_ETH_16 = 0x7fe00000 + 0x4000 ; /* 16K bytes */
__top_RAM2 = 0x7fe00000 + 0x4000 ; /* 16K bytes */ use this adress transmit string data from transmitter to receiver I'm working on Ethernet communication between two LPC2478 boards using LPCXpresso IDE. I want to send a string from one board to another using broadcast MAC (FF:FF:FF:FF:FF:FF) and store all buffers in internal SRAM (no external RAM or lwIP). send data in the form string from transmitter to receiver Give me corrections and why this problem face. give me solution Thank you .....

Re: Ethernet Code For LPC2478 controller using LPC24xx.h file on LPCXpresso IDE

Harry_Zhang — Fri, 24 Oct 2025 08:00:58 GMT

Hi @VijayaJangam1

I have checked your some code.

I have some advices.

1. I think your PHY may not complete auto-negotiation before EMAC is enabled.

So i think you can

while (!phy_link_up()) { dly(1000000); } // Wait for stable link

2. Did you config the ENET_TX_EN, ENET_TXD0, ENET_TXD1, ENET_REF_CLK pin?

Harry

Re: Ethernet Code For LPC2478 controller using LPC24xx.h file on LPCXpresso IDE

vijayajangam — Sat, 17 Jan 2026 10:30:22 GMT

I have checked but my Ethernet code is not working

if You hve any sample code for ethernet provide me please for LPCXpresso IDE.