Ethernet Echo Server

ali2399 · ‎2016-11-10

Posted on November 10, 2016 at 09:40

Hi,

I have a problem about ethernet echo server.Sended data from client can be readed but with echo. Besides, I want to send data to client.Because of this;

uint8_t buffer[8];

buffer[0] = (0xFF000000 & (uint32_t)(100)) >> 24;

buffer[1] = (0x00FF0000 & (uint32_t)(100)) >> 16;

buffer[2] = (0x0000FF00 & (uint32_t)(100)) >> 8;

buffer[3] = (0x000000FF & (uint32_t)(100));

buffer[4] = (0xFF000000 & (uint32_t)(300)) >> 24;

buffer[5] = (0x00FF0000 & (uint32_t)(300)) >> 16;

buffer[6] = (0x0000FF00 & (uint32_t)(300)) >> 8;

buffer[7] = (0x000000FF & (uint32_t)(300));

/* enqueue data for transmission */

wr_err = tcp_write(tpcb, ptr->payload, ptr->len, 1);

wr_err = tcp_write(tpcb, &buffer, 8, 1);

This function is written in static void tcp_echoserver_send().But with this way , data is made echo.How can be closed echo ?

#ethernet #cubemx #lwip

slimen · ‎2016-11-11

Posted on November 11, 2016 at 16:28

Hello,

I suggest you refer to the ''LwIP_TCP_Echo_Server'' example under your firmware package (STM32CubeXX) to find the needed functions.

For example for STM32CubeF4:

STM32Cube_FW_F4_V1.13.0\Projects\STM324xG_EVAL\Applications\LwIP\LwIP_TCP_Echo_Server

Regards