原创 W5100的简单TCP通讯协议的固件开发与更新

2012-2-8 10:34 1490 13 13 分类: MCU/ 嵌入式

下面是我对一个简单W5100的TCP协议固件的注释,
在此我们使用了W5100的开发板(W5100E01-ARV),开发和更新非常简单,AVR Studio的使用示意图放在最后。
这个程序实现了简单的socket建立,以太网收发数据的程序。
可以调用device terminal来进行测试。(在wiznet主页中可以搜索到这个小软件,可轻松实现串口和以太网的数据互通)
程序如下:
#include <stdio.h>

#include <stdlib.h>

#include <avr/io.h>

#include <avr/interrupt.h>

#include <string.h>

 

#include "../header/types.h"

#include "../header/serial.h"

#include "../header/socket.h"

#include "../header/w5100.h"

 

#define MAX_SIZE 2048

 

#define RX_BUF 0x1100

#define TX_BUF 0x1900


void main()

{


//initialize


cli(); // disable interrupt

EICRA=0x00;

EICRB=0x00;

EIMSK=0x00;

EIFR=0x00;

MCUCR = 0x80; // enable external ram

XMCRA=0x40; //define lower sector of memory for EXternal ram and upper sector for W5100C and others

sei(); // enable interrupts

uart_init(0,7);

lcd_init();

 

//set IP address


uint8 addr[6];


iinchip_init();

sysinit(0x55,0x55); //

addr[0] = 192; addr[1] = 168; addr[2] = 1; addr[3] = 20;

setSIPR(addr);

addr[0] = 192; addr[1] = 168; addr[2] = 1; addr[3] = 1;

setGAR(addr);

addr[0] = 255; addr[1] = 255; addr[2] = 255; addr[3] = 0;

setSUBR(addr);

memcpy(addr, "\x00\x08\xDC\x00\x00\x00",6);

setSHAR(addr);


uint8 lcd[50];


// IINCHIP_READ get register value from SIPR(Source IP register)

sprintf(lcd,"IP: %d.%d.%d.%d",IINCHIP_READ(SIPR0),IINCHIP_READ(SIPR0+1),IINCHIP_READ(SIPR0+2),IINCHIP_READ(SIPR0+3));

lcd_puts(lcd); //print LCD string into LCD


uint8 len;


//Create socket 0 for TCP mode at port 5000

//#define Sn_MR_TCP 0x01

socket(0, Sn_MR_TCP, 5000, 0);

//extern uint8 socket(SOCKET s, uint8 protocol, uint16 port, uint8 flag);

 

//listen the socket 0

listen(0);

 

//check the status of Listen status (if entered), print to serial

if( getSn_SR(0) == SOCK_LISTEN)

{

printf("Listen Mode");


}


// if data is received

// extern uint16 getSn_RX_RSR(SOCKET s); // get socket RX recv buf size

while(getSn_RX_RSR(0) ==0 );

printf("got data \r\n");


//print data length

len = getSn_RX_RSR(0);

printf("the size is %u \r\n",len);

 

//set Send(TX) and Receive(RX) buffer pointer

uint8 * TX_BUFFER = (uint8 *) TX_BUF;

uint8 * RX_BUFFER = (uint8 *) RX_BUF;


if( len > MAX_SIZE)

len = MAX_SIZE;

 

//put the received data into RX buffer, save length to len

len = recv(0,RX_BUFFER,len);


//send data from RX Buffer to socket 0

send(0,RX_BUFFER,len);

}

 


使用AVR STUDIO编译,生成hex文件,然后烧录到MCU芯片中(Atmega128)

图片如下:

1.jpg

 


在下一节,我们将再次介绍一下UDP协议的简单实现。
如果您有什么疑问请留言或者来信:wiznetbj@wiznettechnology.com,希望本篇文章可以给您带来帮助,谢谢。

 

文章评论0条评论)

登录后参与讨论
我要评论
0
13
关闭 站长推荐上一条 /2 下一条