CC3200的SmartConfig 断开重连

由于产品需要，用CC3200这颗芯片做smarrconfig （用的是TI的例程）目前没有配置上路由器，不过设备断开后，或者断电后不能重新链接之前的路由器，有什么方法可以让CC3200断线重连功能呢？能否给出个具体的步骤和方法，接口等，由于第一次使用CC3200，目前学的很吃力。希望有大神指教。谢谢

Terry Han：

建议参考一下SDK中的例子cc3200-sdk\example\connection_policy

关于详细的测试备注如下：

static long SetConnectionPolicy(){unsigned char policyVal;long lRetVal = -1;

/* Clear all stored profiles and reset the policies */lRetVal = sl_WlanProfileDel(0xFF); ASSERT_ON_ERROR(lRetVal);lRetVal = sl_WlanPolicySet(SL_POLICY_CONNECTION, SL_CONNECTION_POLICY(0,0,0,0,0), 0, 0); ASSERT_ON_ERROR(lRetVal);//———————————————-(1)通过增加profile方式连接AP-OK———————————————– //Add Profile/* user needs to change SSID_NAME = "<Secured AP>"SECURITY_TYPE = SL_SEC_TYPE_WPASECURITY_KEY = "<password>"and set the priority as per requirement to connect with a secured AP */SlSecParams_t secParams;secParams.Key = SECURITY_KEY;secParams.KeyLen = strlen(SECURITY_KEY);secParams.Type = SECURITY_TYPE;lRetVal = sl_WlanProfileAdd(SSID_NAME,strlen(SSID_NAME),0,&secParams,0,1,0);ASSERT_ON_ERROR(lRetVal);

//set AUTO policy automatically reconnect to one of its stored profiles 自动模式下CC3200会从SPI_Flash中读取存储的profile配置AP信息并连接APlRetVal = sl_WlanPolicySet(SL_POLICY_CONNECTION,SL_CONNECTION_POLICY(1,0,0,0,0),&policyVal, 1 /*PolicyValLen*/); ASSERT_ON_ERROR(lRetVal);//wait until IP is acquiredwhile((!IS_CONNECTED(g_ulStatus)) || (!IS_IP_ACQUIRED(g_ulStatus))){_SlNonOsMainLoopTask();}CLR_STATUS_BIT(g_ulStatus, STATUS_BIT_CONNECTION);CLR_STATUS_BIT(g_ulStatus, STATUS_BIT_IP_AQUIRED);//// ****** Put breakpoint here ******// If control comes here- means device connected to AP in auto mode////注意并未采用主动连接的方式：lRetVal = sl_WlanConnect((signed char*)SSID_NAME, strlen(SSID_NAME), 0, &secParams, 0);//————————————————————————————————————————-// Disconnect from APlRetVal = sl_WlanDisconnect();if(0 == lRetVal){// Waitwhile(IS_CONNECTED(g_ulStatus)){#ifndef SL_PLATFORM_MULTI_THREADED_SlNonOsMainLoopTask();#endif}}//———————————————-(2)通过SmartConfig方式连接AP-OK———————————————– //delete profileslRetVal = sl_WlanProfileDel(0xFF); ASSERT_ON_ERROR(lRetVal);

//set Auto SmartConfig policylRetVal = sl_WlanPolicySet(SL_POLICY_CONNECTION,SL_CONNECTION_POLICY(1,0,0,0,1),&policyVal,0); ASSERT_ON_ERROR(lRetVal);// reset the NWPlRetVal = ResetNwp(); //重启NWP，相当于网络断掉ASSERT_ON_ERROR(lRetVal);// wait for smart config to complete and device to connect to an AP//wait until IP is acquiredwhile((!IS_CONNECTED(g_ulStatus)) || (!IS_IP_ACQUIRED(g_ulStatus))){_SlNonOsMainLoopTask(); //查看NWP返回的消息！！！—在这处理消息来处理 SimpleLinkGeneralEventHandler()/SimpleLinkWlanEventHandler/..等回调函数！！！}CLR_STATUS_BIT(g_ulStatus, STATUS_BIT_CONNECTION);CLR_STATUS_BIT(g_ulStatus, STATUS_BIT_IP_AQUIRED);//// ****** Put breakpoint here ******// If control comes here- means device connected to AP in smartconfig mode////备注：配置完sl_WlanPolicySet()后并未调用lRetVal = sl_WlanSmartConfigStart()但是通过手机Smart Starter进行SmartConfig也能配置CC3200连接AP！！！—而在provisioning_smartconfig例程中是调用了的！//————————————————————————————————————————-

//———————————————-(3)Fast方式连接AP-OK———————————————– /* Delete all profiles (0xFF) stored */lRetVal = sl_WlanProfileDel(0xFF); ASSERT_ON_ERROR(lRetVal);// reset the NWPlRetVal = ResetNwp(); //重启NWP，相当于网络断掉ASSERT_ON_ERROR(lRetVal);

/* Set connection policy to Fast, Device will connect to last connected AP.* This feature can be used to reconnect to AP */lRetVal = sl_WlanPolicySet(SL_POLICY_CONNECTION , SL_CONNECTION_POLICY(1,1,0,0,0), 0, 0); //Fast模式特点可以用在重连AP–YES 测试OKASSERT_ON_ERROR(lRetVal);

/* Connect to the open AP */// lRetVal = sl_WlanConnect(SSID_NAME, strlen(SSID_NAME), 0, 0, 0);//————————增加—————————–

secParams.Key = (signed char*)SECURITY_KEY;secParams.KeyLen = strlen(SECURITY_KEY);secParams.Type = SECURITY_TYPE;lRetVal = sl_WlanConnect((signed char*)SSID_NAME, strlen(SSID_NAME), 0, &secParams, 0);//——————————————————— ASSERT_ON_ERROR(lRetVal);//wait until IP is acquiredwhile((!IS_CONNECTED(g_ulStatus)) || (!IS_IP_ACQUIRED(g_ulStatus))){_SlNonOsMainLoopTask();}CLR_STATUS_BIT(g_ulStatus, STATUS_BIT_CONNECTION);CLR_STATUS_BIT(g_ulStatus, STATUS_BIT_IP_AQUIRED);// // Add unsecured AP profile with priority 6 (7 is highest) —之前的SDK不支持这种模式，必须要增加Profile形式？现在可以删除这个？===Test-OK，可以删除！// // Because of a limitation in SDK-0.5 which prevents the automatic addition// // of the profile (fast), the application is required to explicitly add it.// // The limitation shall be addressed in subsequent SDK release, and the below// // lines for adding the profile can be removed then…! // secParams.Key = "";// secParams.KeyLen = 0;// secParams.Type = SL_SEC_TYPE_OPEN;// lRetVal = sl_WlanProfileAdd((signed char*)SSID_NAME,strlen(SSID_NAME), 0, &secParams, 0, 6, 0);// ASSERT_ON_ERROR(lRetVal);

// reset the NWPlRetVal = ResetNwp(); //重启NWP，相当于网络断掉，注意此时并未保存profile,CC3200选择最近联网的AP中进行连接！ASSERT_ON_ERROR(lRetVal);

/* Wait for the connection to be established */while((!IS_CONNECTED(g_ulStatus)) || (!IS_IP_ACQUIRED(g_ulStatus))){_SlNonOsMainLoopTask();}//// ****** Put breakpoint here ******// If control comes here- means device connected to AP in FAST mode////————————————————————————————————————————-//remove all policieslRetVal = sl_WlanPolicySet(SL_POLICY_CONNECTION,SL_CONNECTION_POLICY(0,0,0,0,0),&policyVal,0); ASSERT_ON_ERROR(lRetVal);

return SUCCESS;

}

补充一个UDP测试的AP断开重连的程序

if(Flag_SL_WLAN_DISCONNECT_EVENT==1) //每次AP断开后都会进入到SimpleLinkWlanEventHandler()函数中，产生SL_WLAN_DISCONNECT_EVENT事件—测试OK{unsigned char policyVal;UART_PRINT("AP Disconnect Try Reconnect\n\r");// lRetVal = sl_WlanPolicySet(SL_POLICY_CONNECTION , SL_CONNECTION_POLICY(1,1,0,0,0), 0, 0); //通过Fast模式无法重连AP，// (1)// ResetNwp(); //可能是在通信过程中突然将AP关闭后，CC3200并未保存AP的信息，导致即使重启NWP也无法连接AP现象，即使重启好了AP也不行// 使能profile重启NWP也无法连接AP，而例程中的方法是在AP连接的状态下将NWP重启，是可以连接AP的，可能在NWP重启sl_stop时保存了AP信息！// WlanConnect(); //通过AP断开后启动OK，自己重连的方式测试OK—每次AP断开后都可以进入到SimpleLinkWlanEventHandler()中断函数中，// (2) 可以自动重连// lRetVal = sl_WlanPolicySet(SL_POLICY_CONNECTION,SL_CONNECTION_POLICY(1,0,0,0,0),&policyVal, 1 /*PolicyValLen*/); // ASSERT_ON_ERROR(lRetVal);// ResetNwp();// (3) 在(2)基础上什么也不用做，直接等待，CC3200会自动重连的！然后连接建立UDP开始发送数据//wait until IP is acquiredwhile((!IS_CONNECTED(g_ulStatus)) || (!IS_IP_ACQUIRED(g_ulStatus))){_SlNonOsMainLoopTask();}

Terry Han：

CC3200在连接到AP后保存Profile，在CC3200再次启动后，注意不要将所有的Profile删除，否则就无法连接到你之前记录的路由器AP上了，在程序中查找

//*****************************************************************************//! \brief This function puts the device in its default state. It://! – Set the mode to STATION//! – Configures connection policy to Auto and AutoSmartConfig//! – Deletes all the stored profiles  ———————————————————–这个地方不要打开，否则会删除所有的Profile//! – Enables DHCP//! – Disables Scan policy//! – Sets Tx power to maximum//! – Sets power policy to normal//! – Unregister mDNS services//! – Remove all filters//!//! \param none//! \return On success, zero is returned. On error, negative is returned//*****************************************************************************static long ConfigureSimpleLinkToDefaultState()

SlVersionFull ver = {0};_WlanRxFilterOperationCommandBuff_t RxFilterIdMask = {0};

unsigned char ucVal = 1;unsigned char ucConfigOpt = 0;unsigned char ucConfigLen = 0;unsigned char ucPower = 0;

long lRetVal = -1;long lMode = -1;

lMode = sl_Start(0, 0, 0);ASSERT_ON_ERROR(lMode);

// If the device is not in station-mode, try configuring it in station-mode if (ROLE_STA != lMode){if (ROLE_AP == lMode){// If the device is in AP mode, we need to wait for this event // before doing anything while(!IS_IP_ACQUIRED(g_ulStatus)){#ifndef SL_PLATFORM_MULTI_THREADED_SlNonOsMainLoopTask(); #endif}}

// Switch to STA role and restart lRetVal = sl_WlanSetMode(ROLE_STA);ASSERT_ON_ERROR(lRetVal);

lRetVal = sl_Stop(0xFF);ASSERT_ON_ERROR(lRetVal);

lRetVal = sl_Start(0, 0, 0);ASSERT_ON_ERROR(lRetVal);

// Check if the device is in station again if (ROLE_STA != lRetVal){// We don't want to proceed if the device is not coming up in STA-mode return DEVICE_NOT_IN_STATION_MODE;}}// Get the device's version-informationucConfigOpt = SL_DEVICE_GENERAL_VERSION;ucConfigLen = sizeof(ver);lRetVal = sl_DevGet(SL_DEVICE_GENERAL_CONFIGURATION, &ucConfigOpt, &ucConfigLen, (unsigned char *)(&ver));ASSERT_ON_ERROR(lRetVal);UART_PRINT("Host Driver Version: %s\n\r",SL_DRIVER_VERSION);UART_PRINT("Build Version %d.%d.%d.%d.31.%d.%d.%d.%d.%d.%d.%d.%d\n\r",ver.NwpVersion[0],ver.NwpVersion[1],ver.NwpVersion[2],ver.NwpVersion[3],ver.ChipFwAndPhyVersion.FwVersion[0],ver.ChipFwAndPhyVersion.FwVersion[1],ver.ChipFwAndPhyVersion.FwVersion[2],ver.ChipFwAndPhyVersion.FwVersion[3],ver.ChipFwAndPhyVersion.PhyVersion[0],ver.ChipFwAndPhyVersion.PhyVersion[1],ver.ChipFwAndPhyVersion.PhyVersion[2],ver.ChipFwAndPhyVersion.PhyVersion[3]);

// Set connection policy to Auto + SmartConfig // (Device's default connection policy)lRetVal = sl_WlanPolicySet(SL_POLICY_CONNECTION, SL_CONNECTION_POLICY(1, 0, 0, 0, 1), NULL, 0);ASSERT_ON_ERROR(lRetVal);

// Remove all profileslRetVal = sl_WlanProfileDel(0xFF);——————————————————————不要删除所有的ProfileASSERT_ON_ERROR(lRetVal);

//// Device in station-mode. Disconnect previous connection if any// The function returns 0 if 'Disconnected done', negative number if already// disconnected Wait for 'disconnection' event if 0 is returned, Ignore // other return-codes//lRetVal = sl_WlanDisconnect(); //会把标志位置位,中断是在后面发生的！在后面清除标志位if(0 == lRetVal){// Waitwhile(IS_CONNECTED(g_ulStatus)){#ifndef SL_PLATFORM_MULTI_THREADED_SlNonOsMainLoopTask(); #endif}}

// Enable DHCP clientlRetVal = sl_NetCfgSet(SL_IPV4_STA_P2P_CL_DHCP_ENABLE,1,1,&ucVal);ASSERT_ON_ERROR(lRetVal);

// Disable scanucConfigOpt = SL_SCAN_POLICY(0);lRetVal = sl_WlanPolicySet(SL_POLICY_SCAN , ucConfigOpt, NULL, 0);ASSERT_ON_ERROR(lRetVal);

// Set Tx power level for station mode// Number between 0-15, as dB offset from max power – 0 will set max powerucPower = 0;lRetVal = sl_WlanSet(SL_WLAN_CFG_GENERAL_PARAM_ID, WLAN_GENERAL_PARAM_OPT_STA_TX_POWER, 1, (unsigned char *)&ucPower);ASSERT_ON_ERROR(lRetVal);//add //lRetVal = sl_WlanPolicySet(SL_POLICY_CONNECTION , SL_CONNECTION_POLICY(1,1,0,0,0), 0, 0);

// Set PM policy to normallRetVal = sl_WlanPolicySet(SL_POLICY_PM , SL_NORMAL_POLICY, NULL, 0);ASSERT_ON_ERROR(lRetVal);

// Unregister mDNS serviceslRetVal = sl_NetAppMDNSUnRegisterService(0, 0);ASSERT_ON_ERROR(lRetVal);

// Remove all 64 filters (8*8)memset(RxFilterIdMask.FilterIdMask, 0xFF, 8);lRetVal = sl_WlanRxFilterSet(SL_REMOVE_RX_FILTER, (_u8 *)&RxFilterIdMask,sizeof(_WlanRxFilterOperationCommandBuff_t));ASSERT_ON_ERROR(lRetVal);

lRetVal = sl_Stop(SL_STOP_TIMEOUT);ASSERT_ON_ERROR(lRetVal);

InitializeAppVariables();return lRetVal; // Success}

chunyi tang：

回复 Terry Han:

这个回答我看过了，多谢你的回复

chunyi tang：

回复 Terry Han:

你的回答我看过，不过我试了试还是不行

KECHEN MA：

回复 chunyi tang:

我试了也不行 请问你搞定了吗？

user5127208：

回复 Terry Han:

请问，（1）中的AP断电，WiFi重连通信的问题解决了吗？？

user5858362：

回复 Terry Han:

是不是把那句话注释掉，还是怎么处理？注释掉的话会收到-72的错误代码