STM32+W5100S以太网芯片程序与资料 -

#include "socket.h"
static uint16 local_port;
extern uint16 sent_ptr;
#define __MACRAW__
/**
@brief This Socket function initialize the channel in perticular mode, and set the port and wait for W5200 done it.
@return 1 for sucess else 0.
*/
void setkeepalive(SOCKET s);
uint8 socket(SOCKET s, uint8 protocol, uint16 port, uint8 flag) // 2017-07-17
{
uint8 ret;
if (
((protocol&0x0F) == Sn_MR_TCP) ||
((protocol&0x0F) == Sn_MR_UDP) ||
((protocol&0x0F) == Sn_MR_IPRAW) ||
((protocol&0x0F) == Sn_MR_MACRAW)
)
{
close(s);
if((protocol&0x0F)==Sn_MR_TCP)
{
setkeepalive(s);
}
IINCHIP_WRITE(W5100S_Sn_MR(s) ,protocol | flag);
if (port != 0) {
IINCHIP_WRITE( W5100S_Sn_PORT0(s) ,(uint8)((port & 0xff00) >> 8));
IINCHIP_WRITE( W5100S_Sn_PORT1(s) ,(uint8)(port & 0x00ff));
} else {
local_port++; // if don't set the source port, set local_port number.
IINCHIP_WRITE(W5100S_Sn_PORT0(s) ,(uint8)((local_port & 0xff00) >> 8));
IINCHIP_WRITE(W5100S_Sn_PORT1(s) ,(uint8)(local_port & 0x00ff));
}
IINCHIP_WRITE( W5100S_Sn_CR(s) ,Sn_CR_OPEN); // run sockinit Sn_CR
/* wait to process the command... */
while( IINCHIP_READ(W5100S_Sn_CR(s)) )
;
/* ------- */
ret = 1;
}
else
{
ret = 0;
}
return ret;
}
/**
@brief This function close the socket and parameter is "s" which represent the socket number
*/
void close(SOCKET s)
{
IINCHIP_WRITE( W5100S_Sn_CR(s) ,Sn_CR_CLOSE); //SOCKET关闭
/* wait to process the command... */
while( IINCHIP_READ(W5100S_Sn_CR(s) ) )
;
/* ------- */
/* all clear */
IINCHIP_WRITE( W5100S_Sn_IR(s) , 0xFF);
}
/**
@brief This function established the connection for the channel in passive (server) mode. This function waits for the request from the peer.
@return 1 for success else 0.
*/
uint8 listen(SOCKET s) //设置为等待客户端发出请求模式
{
uint8 ret;
if (IINCHIP_READ( W5100S_Sn_SR(s) ) == Sn_SR_INIT) //指示SOCKET打开并处于TCP模式
{
IINCHIP_WRITE(W5100S_Sn_CR(s) ,Sn_CR_LISTEN); //设置为等待客户端发出请求模式
/* wait to process the command... */
while( IINCHIP_READ(W5100S_Sn_CR(s) ) ) //等待设置完成
;
/* ------- */
ret = 1;
}
else
{
ret = 0;
}
return ret;
}
/**
@brief This function established the connection for the channel in Active (client) mode.
This function waits for the untill the connection is established.
@return 1 for success else 0.
*/
uint8 connect(SOCKET s, uint8 * addr, uint16 port)
{
uint8 ret; // ret定义为是否连接的标志位，ret=0 连接中断；ret=1连接成功
if
(
((addr[0] == 0xFF) && (addr[1] == 0xFF) && (addr[2] == 0xFF) && (addr[3] == 0xFF)) ||
((addr[0] == 0x00) && (addr[1] == 0x00) && (addr[2] == 0x00) && (addr[3] == 0x00)) ||
(port == 0x00)
)
{
ret = 0; // 如果IP地址和Port无法获取，则连接中断
}
else // 如果目的IP和Port未设置，则进行设置
{
ret = 1;
IINCHIP_WRITE( W5100S_Sn_DIPR0(s), addr[0]);
IINCHIP_WRITE( W5100S_Sn_DIPR1(s), addr[1]);
IINCHIP_WRITE( W5100S_Sn_DIPR2(s), addr[2]);
IINCHIP_WRITE( W5100S_Sn_DIPR3(s), addr[3]);
IINCHIP_WRITE( W5100S_Sn_DPORT0(s), (uint8)((port & 0xff00) >> 8));
IINCHIP_WRITE( W5100S_Sn_DPORT1(s), (uint8)(port & 0x00ff));
IINCHIP_WRITE( W5100S_Sn_CR(s) ,Sn_CR_CONNECT); // Sn_CR数值设为0x04，并执行TCP连接请求命令
while ( IINCHIP_READ(W5100S_Sn_CR(s) ) ) ; // MCU读取Sn_CR(s)的数值
while ( IINCHIP_READ(W5100S_Sn_SR(s)) != Sn_SR_SYNSEND ) // 此时Sn_SR(s)寄存器应该处于SOCK_SYNSENT，下面排除不在该状态的几种情况
{
if(IINCHIP_READ(W5100S_Sn_SR(s)) == Sn_SR_ESTABLISHED) // Socket连接已经建立，正常连接
{
break;
}
if (getSn_IR(s) & Sn_IR_TIMEOUT) // 当ARPto或TCPto超时，异常
{
IINCHIP_WRITE(W5100S_Sn_IR(s), (Sn_IR_TIMEOUT)); // 通知MCU该中断，并清中断
ret = 0; // ret置0，连接中断
break;
}
}
}
return ret;
}
/**
@brief This function used for disconnect the socket and parameter is "s" which represent the socket number
@return 1 for success else 0.
*/
void disconnect(SOCKET s)
{
IINCHIP_WRITE( W5100S_Sn_CR(s) ,Sn_CR_DISCON);
/* wait to process the command... */
while( IINCHIP_READ(W5100S_Sn_CR(s) ) )
;
/* ------- */
}
/**
@brief This function used to send the data in TCP mode
@return 1 for success else 0.
*/
uint16 send(SOCKET s, const uint8 * buf, uint16 len)
{
uint8 status=0;
uint16 ret=0;
uint16 freesize=0;
if (len > getSn_TXBUF_SIZE( s)*1024)
ret = getSn_TXBUF_SIZE( s)*1024;
else ret = len;
do
{
freesize = getSn_TX_FSR(s);
status = IINCHIP_READ(W5100S_Sn_SR(s));
if ((status != Sn_SR_ESTABLISHED) && (status != Sn_SR_CLOSE_WAIT))
{
printf("status break\r\n");
ret = 0;
break;
}
}
while (freesize < ret);
send_data_processing(s, (uint8 *)buf, ret);
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