cc3200 无线UART程序设计

问题描述：我在wlan_staion的代码增加了一些代码，主要是增加了BsdTcpClient代码，使其作为客户端

                  在wlan_ap的代码里增加了BsdTcpServer代码，使其成为服务器。其他一些必要的修改都已完成。针对BsdTcpClient中的

 sAddr.sin_addr.s_addr = sl_Htonl((unsigned int)g_ulDestinationIp);中的参数g_ulDestinationIp

修改  #define IP_ADDR             0xc0a8015f /* 192.168.1.95*/。其中192.168.1.95是路由器分配给另一块板的地址，这块板做服务器。

尽管如此，还是不能实现连接。

实验显示如下

请问为什么总是无法建立连接？

感谢！

Hi, Endi Mati,

你的TCP 服务器是建立在做AP的这个板上吗？那它的IP默认应该是192.168.1.1哦。

我不是太明白你说的192.168.1.195的IP是怎么回事，能否描述一下， 谢谢。

是的，我在getting_started_with_wlan_ap这个例子的基础上修改了ConfigureMode（）和 WlanAPMode（）函数

static int ConfigureMode(int iMode)
{
char pcSsidName[33]="TP_LINK_478BE8";
long lRetVal = -1;

//UART_PRINT("Enter the AP SSID name: ");
// GetSsidName(pcSsidName,33);

lRetVal = sl_WlanSetMode(ROLE_AP);
ASSERT_ON_ERROR(lRetVal);

lRetVal = sl_WlanSet(SL_WLAN_CFG_AP_ID, WLAN_AP_OPT_SSID, strlen(pcSsidName),
(unsigned char*)pcSsidName);
ASSERT_ON_ERROR(lRetVal);

UART_PRINT("Device is configured in AP mode: %s\n\r",pcSsidName);

/* Restart Network processor */
lRetVal = sl_Stop(SL_STOP_TIMEOUT);

// reset status bits
CLR_STATUS_BIT_ALL(g_ulStatus);

return sl_Start(NULL,NULL,NULL);
}

//****************************************************************************
//
//! \brief Opening a TCP server side socket and receiving data
//!
//! This function opens a TCP socket in Listen mode and waits for an incoming
//! TCP connection.
//! If a socket connection is established then the function will try to read
//! 1000 TCP packets from the connected client.
//!
//! \param[in] port number on which the server will be listening on
//!
//! \return 0 on success, -1 on error.
//!
//! \note This function will wait for an incoming connection till
//! one is established
//
//
int BsdTcpServer(unsigned short usPort)
{
SlSockAddrIn_t sAddr;
SlSockAddrIn_t sLocalAddr;
//int iCounter;
int iAddrSize;
int iSockID;
int iStatus;
// int iNewSockID;
//long lLoopCount = 0;
long lNonBlocking = 1;
// int iTestBufLen;

//filling the TCP server socket address
sLocalAddr.sin_family = SL_AF_INET;
sLocalAddr.sin_port = sl_Htons((unsigned short)usPort);
sLocalAddr.sin_addr.s_addr = 0;

// creating a TCP socket
iSockID = sl_Socket(SL_AF_INET,SL_SOCK_STREAM, 0);
if( iSockID < 0 )
{
// error
ASSERT_ON_ERROR(SOCKET_CREATE_ERROR);
}

iAddrSize = sizeof(SlSockAddrIn_t);

// binding the TCP socket to the TCP server address
iStatus = sl_Bind(iSockID, (SlSockAddr_t *)&sLocalAddr, iAddrSize);
if( iStatus < 0 )
{
// error
sl_Close(iSockID);
ASSERT_ON_ERROR(BIND_ERROR);
}

// putting the socket for listening to the incoming TCP connection
iStatus = sl_Listen(iSockID, 0);
if( iStatus < 0 )
{
sl_Close(iSockID);
ASSERT_ON_ERROR(LISTEN_ERROR);
}

// setting socket option to make the socket as non blocking
iStatus = sl_SetSockOpt(iSockID, SL_SOL_SOCKET, SL_SO_NONBLOCKING,
&lNonBlocking, sizeof(lNonBlocking));
if( iStatus < 0 )
{
sl_Close(iSockID);
ASSERT_ON_ERROR(SOCKET_OPT_ERROR);
}
iNewSockID = SL_EAGAIN;

// waiting for an incoming TCP connection
while( iNewSockID < 0 )
{
// accepts a connection form a TCP client, if there is any
// otherwise returns SL_EAGAIN
iNewSockID = sl_Accept(iSockID, ( struct SlSockAddr_t *)&sAddr,
(SlSocklen_t*)&iAddrSize);
if( iNewSockID == SL_EAGAIN )
{
MAP_UtilsDelay(10000);
}
else if( iNewSockID < 0 )
{
// error
sl_Close(iNewSockID);
sl_Close(iSockID);
ASSERT_ON_ERROR(ACCEPT_ERROR);
}
}

UART_PRINT("\r\n SEND:ppp");
while(iFlag)
{
osi_Sleep(100);

}
// close the connected socket after receiving from connected TCP client
iStatus = sl_Close(iNewSockID);
ASSERT_ON_ERROR(iStatus);
// close the listening socket
iStatus = sl_Close(iSockID);
ASSERT_ON_ERROR(iStatus);

return SUCCESS;
}

//****************************************************************************
//
//! \brief start simplelink, wait for the sta to connect to the device and
//! run the ping test for that sta
//!
//! \param pvparameters is the pointer to the list of parameters that can be
//! passed to the task while creating it
//!
//! \return None
//
//****************************************************************************
void WlanAPMode( void *pvParameters )
{
//int iTestResult = 0;
unsigned char ucDHCP;
long lRetVal = -1;

InitializeAppVariables();

//
// Following function configure the device to default state by cleaning
// the persistent settings stored in NVMEM (viz. connection profiles &
// policies, power policy etc)
//
// Applications may choose to skip this step if the developer is sure
// that the device is in its default state at start of applicaton
//
// Note that all profiles and persistent settings that were done on the
// device will be lost
//
lRetVal = ConfigureSimpleLinkToDefaultState();
if(lRetVal < 0)
{
if (DEVICE_NOT_IN_STATION_MODE == lRetVal)
UART_PRINT("Failed to configure the device in its default state \n\r");

LOOP_FOREVER();
}

UART_PRINT("Device is configured in default state \n\r");

//
// Asumption is that the device is configured in station mode already
// and it is in its default state
//
lRetVal = sl_Start(NULL,NULL,NULL);

if (lRetVal < 0)
{
UART_PRINT("Failed to start the device \n\r");
LOOP_FOREVER();
}

UART_PRINT("Device started as STATION \n\r");

//
// Configure the networking mode and ssid name(for AP mode)
//
if(lRetVal != ROLE_AP)
{
if(ConfigureMode(lRetVal) != ROLE_AP)
{
UART_PRINT("Unable to set AP mode, exiting Application...\n\r");
sl_Stop(SL_STOP_TIMEOUT);
LOOP_FOREVER();
}
}

while(!IS_IP_ACQUIRED(g_ulStatus))
{
//looping till ip is acquired
}

unsigned char len = sizeof(SlNetCfgIpV4Args_t);
SlNetCfgIpV4Args_t ipV4 = {0};

// get network configuration
lRetVal = sl_NetCfgGet(SL_IPV4_AP_P2P_GO_GET_INFO,&ucDHCP,&len,
(unsigned char *)&ipV4);
if (lRetVal < 0)
{
UART_PRINT("Failed to get network configuration \n\r");
LOOP_FOREVER();
}

UART_PRINT("Connect a client to Device\n\r");
while(!IS_IP_LEASED(g_ulStatus))
{
//wating for the client to connect
}
UART_PRINT("Client is connected to Device\n\r");

lRetVal = BsdTcpServer(5001);
if(lRetVal <0)
{
UART_PRINT("TCP Server failed\n/r");

}

// revert to STA mode
lRetVal = sl_WlanSetMode(ROLE_STA);
if(lRetVal < 0)
{
ERR_PRINT(lRetVal);
LOOP_FOREVER();
}

// Switch off Network processor
lRetVal = sl_Stop(SL_STOP_TIMEOUT);
// UART_PRINT("WLAN AP example executed successfully");
while(1);
}
//***************************************************************************
//Sendtask function
void SendTask(void *pvParameters)
{
char cTxBuf[100];

char cGetChar;
int iStatus;
int iCounter=0;


while(1)
{ // uart reciver char
cGetChar = MAP_UARTCharGetNonBlocking(UARTA0_BASE);
if((cGetChar != 0xff)||(iNewSockID > 0))
{
//echo char
MAP_UARTCharPut(UARTA0_BASE,cGetChar);
//save reciver char
cTxBuf[iCounter++] = cGetChar;
//Enter(0x0d)or Esc(0x1b)
if((cGetChar ==0x0d) || (cGetChar == 0x1b))
{
//echo and save line feed
MAP_UARTCharPut(UARTA0_BASE,0x0a);
cTxBuf[iCounter++] = 0x0a;
//send tcp data package
iStatus = sl_Send(iNewSockID,cTxBuf,iCounter,0);

if((iStatus > 0)&& (cGetChar == 0x0d))
{ // enter

UART_PRINT("send:");

iCounter = 0;

}
else

{ //send error or enter
UART_PRINT("\r senddata end \n\r");
iFlag = 0;

}

}

}
osi_Sleep(100);
}
}
//receive TCO data package
void ReceiveTask(void *pvParameters)
{
char cRxBuf[100];
int iStatus;

while(1)
{
if(iNewSockID > 0)
{
//receiver TCP datapage
iStatus = sl_Recv(iNewSockID,cRxBuf,100,0);



if(iStatus>0)
{
//enter
if(cRxBuf[iStatus-2] == 0X0d)
{
//save char end
cRxBuf[iStatus]=0;
UART_PRINT("\n\r receive:");
//SEND CHAR
Message(cRxBuf);


}
else
{
//ESC
UART_PRINT("\n\r receive date end\n\r");
iFlag = 0;

}



}
}


osi_Sleep(100);
}

}

这里是作为服务器的。在getting_started_with_wlan_station例子里面做了相应更改

// wireless transfer
int WuartTransfer(unsigned long ulBase,int iSockID)
{
char cTxBuf[100];
char cRxBuf[100];
char cGetChar;
int iStatus;
int iCounter=0;

UART_PRINT("\r\n send:hello wuart ap ");
while(1)
{ // uart reciver char
cGetChar = MAP_UARTCharGetNonBlocking(ulBase);
if(cGetChar != 0xff)
{
//echo char
MAP_UARTCharPut(ulBase,cGetChar);
//save reciver char
cTxBuf[iCounter++] = cGetChar;
//Enter(0x0d)or Esc(0x1b)
if((cGetChar ==0x0d) || (cGetChar == 0x1b))
{
//echo and save line feed
MAP_UARTCharPut(ulBase,0x0a);
cTxBuf[iCounter++] = 0x0a;
//send tcp data package
iStatus = sl_Send(iSockID,cTxBuf,iCounter,0);

if(iStatus <= 0)
{ // error processor
ASSERT_ON_ERROR(sl_Close(iSockID));
UART_PRINT("send data error\n\r");
break;

}

//enter
if(cGetChar == 0x0d)
{
UART_PRINT("send:");
iCounter = 0;
}
//Esc
else
break;

}

}
//receive TCO data package
iStatus = sl_Recv(iSockID,cRxBuf,100,0);
if(iStatus > 0)
{
//Enter
if(cRxBuf[iStatus-2] == 0x0d)
{
//save char end (0x00)
cRxBuf[iStatus] = 0;
UART_PRINT("\r\n receive:");
//send char string
Message(cRxBuf);
UART_PRINT("SEND:");

}
else
break;

}
}


return(iStatus);
}


//*****************************************************************************
//! \brief Opening a TCP client side socket and sending data
//!
//! This function opens a TCP socket and tries to connect to a Server IP_ADDR
//! waiting on port PORT_NUM.
//! If the socket connection is successful then the function will send 1000
//! TCP packets to the server.
//!
//! \param[in] port number on which the server will be listening on
//!
//! \return 0 on success, -1 on Error.
//
int BsdTcpClient(unsigned short usPort)
{
// int iCounter;
// short sTestBufLen;
SlSockAddrIn_t sAddr;
int iAddrSize;
int iSockID;
int iStatus;
// long lLoopCount = 0;

// filling the buffer
/* for (iCounter=0 ; iCounter<BUF_SIZE ; iCounter++)
{
g_cBsdBuf[iCounter] = (char)(iCounter % 10);
}

sTestBufLen = BUF_SIZE;
*/
//filling the TCP server socket address
sAddr.sin_family = SL_AF_INET;
sAddr.sin_port = sl_Htons((unsigned short)usPort);
sAddr.sin_addr.s_addr = sl_Htonl((unsigned int)g_ulDestinationIp);


iAddrSize = sizeof(SlSockAddrIn_t);

// creating a TCP socket
iSockID = sl_Socket(SL_AF_INET,SL_SOCK_STREAM, 0);
if( iSockID < 0 )
{
ASSERT_ON_ERROR(SOCKET_CREATE_ERROR);
}

// connecting to TCP server
iStatus = sl_Connect(iSockID, ( SlSockAddr_t *)&sAddr, iAddrSize);
if( iStatus < 0 )
{
// error
sl_Close(iSockID);
ASSERT_ON_ERROR(CONNECT_ERROR);
}
//set non-blocking mode use for wireless transfer

long lNonblocking = 1;
iStatus = sl_SetSockOpt(iSockID, SL_SOL_SOCKET,
SL_SO_NONBLOCKING,&lNonblocking,sizeof(lNonblocking));

if(iStatus < 0)
{
sl_Close(iSockID);
UART_PRINT("TCP Client failed\n\r");


}
//wireless uart transfer
iStatus = WuartTransfer(UARTA0_BASE,iSockID);
if (iStatus<0)
{
UART_PRINT("WUART Transfer failed\n\r");

}

iStatus = sl_Close(iSockID);
//closing the socket after sending 1000 packets
ASSERT_ON_ERROR(iStatus);

return SUCCESS;
}

使其成为客户端。这里客户当需要服务器的地址，而我作为服务器的那块板的地址是192.168.1.95。

感谢，我已解决。