//!!Ignore key index!!//
int WiFiClass::begin(char* ssid, uint8_t key_idx, char* key)
{
//
// If we already called begin and are already connecting
// then return the status. This prevents sl_WlanConnect()
// from being called repeatedly.
//
if(_connecting) {
delay(500);
return status();
}
//
//initialize the simplelink driver and make sure it was a success
//
bool init_success = WiFiClass::init();
if (!init_success) {
return WL_CONNECT_FAILED;
}
sl_WlanProfileDel(WLAN_DEL_ALL_PROFILES);
//
// Set IP address configuration to DHCP if needed
//
setIpDefaults();
sl_WlanPolicySet(SL_POLICY_CONNECTION , SL_CONNECTION_POLICY(1,1,0,0,0), 0, 0);
//
//get name length and set security type to WEP
//add key and keylength to security parameters
//
int NameLen = strlen(ssid);
SlSecParams_t SecParams = {0};
SecParams.Type = SL_SEC_TYPE_WEP;
SecParams.Key = (signed char *)key;
SecParams.KeyLen = strlen(key);
//
//Connect to the access point (non enterprise, so 5th argument is NULL);
//also mac address parameter set as null (3rd argument)
//
int iRet = sl_WlanConnect((signed char*)ssid, NameLen, NULL, &SecParams, NULL);
//
//return appropriate status as described by arduino wifi library
//the WiFiClass:WiFi_status is handled by the WlanEvenHandler
//in SimpleLinkCallbacks.cpp. However, if iRet < 0, there was an error
//
if (iRet == 0) {
sl_WlanProfileAdd((signed char*)ssid, NameLen, 0, &SecParams, 0, 6, 0);
_connecting = true;
return status();
} else {
return WL_CONNECT_FAILED;
}
}
void WlanConnect()
{
//Add Profile
sl_WlanProfileAdd(g_cWlanSSID, strlen((char*)g_cWlanSSID), 0, &g_SecParams,
0,g_ucPriority,0);
//Connecting to the Access point
sl_WlanConnect(g_cWlanSSID, strlen((char*)g_cWlanSSID), 0, &g_SecParams, 0);
//waiting for the device to connect to the AP and obtain ip address
while (g_uiConnectTimeoutCnt<CONNECTION_TIMEOUT_COUNT &&
((g_ucConnectionStatus == 0) || (g_ucIpObtained == 0)))
{
osi_Sleep(1); //Sleep 1 millisecond
g_uiConnectTimeoutCnt++;
}
g_uiConnectTimeoutCnt = 0;
}
/*
* Application's entry point
*/
int main(int argc, char** argv)
{
SlSecParams_t secParams = {0};
_i32 retVal = -1;
retVal = initializeAppVariables();
ASSERT_ON_ERROR(retVal);
/* Stop WDT and initialize the system-clock of the MCU */
stopWDT();
initClk();
/* Configure command line interface */
CLI_Configure();
displayBanner();
/*
* Following function configures 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 application
*
* Note that all profiles and persistent settings that were done on the
* device will be lost
*/
retVal = configureSimpleLinkToDefaultState();
if(retVal < 0)
{
if (DEVICE_NOT_IN_STATION_MODE == retVal)
CLI_Write(" Failed to configure the device in its default state \n\r");
LOOP_FOREVER();
}
CLI_Write(" Device is configured in default state \n\r");
/*
* Initializing the CC3100 device
* Assumption is that the device is configured in station mode already
* and it is in its default state
*/
retVal = sl_Start(0, 0, 0);
if ((retVal < 0) ||
(ROLE_STA != retVal) )
{
CLI_Write(" Failed to start the device \n\r");
LOOP_FOREVER();
}
CLI_Write(" Device started as STATION \n\r");
/* Delete all profiles (0xFF) stored and reset policy settings */
retVal = sl_WlanProfileDel(0xFF);
if(retVal < 0)
{
LOOP_FOREVER();
}
retVal = sl_WlanPolicySet(SL_POLICY_CONNECTION ,
SL_CONNECTION_POLICY(0, 0, 0, 0, 0), 0, 0);
if(retVal < 0)
{
LOOP_FOREVER();
}
/* Add unsecured AP profile with priority 6 (7 is highest) */
retVal = sl_WlanProfileAdd((_i8 *)UNSEC_SSID_NAME,
pal_Strlen(UNSEC_SSID_NAME), g_BSSID, 0, 0, 6, 0);
if(retVal < 0)
{
LOOP_FOREVER();
}
/* Add WPA2 secured AP profile with priority 7 (highest) */
secParams.Type = SL_SEC_TYPE_WPA;
secParams.Key = SEC_SSID_KEY;
secParams.KeyLen = pal_Strlen(SEC_SSID_KEY);
retVal = sl_WlanProfileAdd((_i8 *)SEC_SSID_NAME,
pal_Strlen(SEC_SSID_NAME), g_BSSID, &secParams, 0, 7, 0);
if(retVal < 0)
{
LOOP_FOREVER();
}
/*
* Enable auto connect (connection to stored profiles according to priority)
* Connection should first be established to higher (secured) profile as in
* this example
*/
retVal = sl_WlanPolicySet(SL_POLICY_CONNECTION ,
SL_CONNECTION_POLICY(1,0,0,0,0), 0, 0);
if(retVal < 0)
{
LOOP_FOREVER();
}
/* Wait for the connection to be established */
while((!IS_CONNECTED(g_Status)) || (!IS_IP_ACQUIRED(g_Status))) { _SlNonOsMainLoopTask(); }
CLI_Write(" Device connected to the AP using 'auto' connection policy\n\r");
/* Delete all profiles (0xFF) stored */
retVal = sl_WlanProfileDel(0xFF);
if(retVal < 0)
{
LOOP_FOREVER();
}
g_Status = 0;
/* Restart the device */
retVal = sl_Stop(SL_STOP_TIMEOUT);
if(retVal < 0)
{
LOOP_FOREVER();
}
retVal = sl_Start(0, 0, 0);
if ((retVal < 0) ||
(ROLE_STA != retVal) )
{
CLI_Write(" Failed to start the device \n\r");
LOOP_FOREVER();
}
/*
* Set connection policy to Fast - Device will connect to the last connected AP.
* This feature can be used to reconnect to AP
*/
retVal = sl_WlanPolicySet(SL_POLICY_CONNECTION,
SL_CONNECTION_POLICY(1, 1, 0, 0, 0), 0, 0);
if(retVal < 0)
{
LOOP_FOREVER();
}
/* Connect to the open AP */
retVal = establishConnectionWithAP();
if(retVal < 0)
{
CLI_Write(" Failed to establish connection w/ an AP \n\r");
LOOP_FOREVER();
}
CLI_Write(" Device was connected to the AP using host-driver API \n\r");
g_Status = 0; /* Status variable */
/* Restart the Device */
retVal = sl_Stop(SL_STOP_TIMEOUT);
if(retVal < 0)
{
LOOP_FOREVER();
}
retVal = sl_Start(0, 0, 0);
if ((retVal < 0) ||
(ROLE_STA != retVal) )
{
CLI_Write(" Failed to start the device \n\r");
LOOP_FOREVER();
}
/* Wait for the connection to be established */
while((!IS_CONNECTED(g_Status)) || (!IS_IP_ACQUIRED(g_Status))) { _SlNonOsMainLoopTask(); }
CLI_Write(" Device connected to the AP using 'fast' connection policy\n\r");
/* Delete all profiles (0xFF) stored */
retVal = sl_WlanProfileDel(0xFF);
if(retVal < 0)
{
LOOP_FOREVER();
}
/* Set Auto SmartConfig policy */
retVal = sl_WlanPolicySet(SL_POLICY_CONNECTION , SL_CONNECTION_POLICY(1,0,0,0,1), 0, 0);
if(retVal < 0)
{
LOOP_FOREVER();
}
/* Restart the Device */
g_Status = 0;
retVal = sl_Stop(SL_STOP_TIMEOUT);
if(retVal < 0)
{
LOOP_FOREVER();
}
retVal = sl_Start(0, 0, 0);
if ((retVal < 0) ||
(ROLE_STA != retVal) )
{
CLI_Write(" Failed to start the device \n\r");
LOOP_FOREVER();
}
/*
* After restarting , device will wait for a command for 2 second and start
* the SmartConfig process if no command is received
*/
CLI_Write(" Device waiting to be connected using SmartConfig technology \n\r");
while((!IS_CONNECTED(g_Status)) || (!IS_IP_ACQUIRED(g_Status))) { _SlNonOsMainLoopTask(); }
CLI_Write(" Device connected to the AP \n\r");
/*
* Cleaning all profiles and setting the default connection policy before exiting the application
* Set connection policy to Auto + SmartConfig (Device's default connection policy)
*/
retVal = sl_WlanProfileDel(0xFF);
if(retVal < 0)
{
LOOP_FOREVER();
}
retVal = sl_WlanPolicySet(SL_POLICY_CONNECTION, SL_CONNECTION_POLICY(1, 0, 0, 0, 1), NULL, 0);
if(retVal < 0)
{
LOOP_FOREVER();
}
return 0;
}
//****************************************************************************
//
//! \brief Configuring the Connection Policy
//!
//! This function configures different Connection Policy such as FAST,AUTO,OPEN
//!
//! \param[in] None
//!
//! \return 0 on success else error code
//!
//! \note
//
//****************************************************************************
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);
//Add Profile
/* user needs to change SSID_NAME = "<Secured AP>"
SECURITY_TYPE = SL_SEC_TYPE_WPA
SECURITY_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
lRetVal = sl_WlanPolicySet(SL_POLICY_CONNECTION,
SL_CONNECTION_POLICY(1,0,0,0,0),
&policyVal, 1 /*PolicyValLen*/);
ASSERT_ON_ERROR(lRetVal);
//wait until IP is acquired
while((!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
//
// Disconnect from AP
lRetVal = sl_WlanDisconnect();
if(0 == lRetVal)
{
// Wait
while(IS_CONNECTED(g_ulStatus))
{
#ifndef SL_PLATFORM_MULTI_THREADED
_SlNonOsMainLoopTask();
#endif
}
}
//delete profiles
lRetVal = sl_WlanProfileDel(0xFF);
ASSERT_ON_ERROR(lRetVal);
//set Auto SmartConfig policy
lRetVal = sl_WlanPolicySet(SL_POLICY_CONNECTION,
SL_CONNECTION_POLICY(1,0,0,0,1),
&policyVal,0);
ASSERT_ON_ERROR(lRetVal);
// reset the NWP
lRetVal = ResetNwp();
ASSERT_ON_ERROR(lRetVal);
// wait for smart config to complete and device to connect to an AP
//wait until IP is acquired
while((!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 smartconfig mode
//
/* Delete all profiles (0xFF) stored */
lRetVal = sl_WlanProfileDel(0xFF);
ASSERT_ON_ERROR(lRetVal);
// reset the NWP
lRetVal = ResetNwp();
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);
ASSERT_ON_ERROR(lRetVal);
/* Connect to the open AP */
lRetVal = sl_WlanConnect(SSID_NAME, strlen(SSID_NAME), 0, 0, 0);
ASSERT_ON_ERROR(lRetVal);
//wait until IP is acquired
while((!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)
// 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 NWP
lRetVal = ResetNwp();
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 policies
lRetVal = sl_WlanPolicySet(SL_POLICY_CONNECTION,
SL_CONNECTION_POLICY(0,0,0,0,0),
&policyVal,0);
ASSERT_ON_ERROR(lRetVal);
return SUCCESS;
}
//*****************************************************************************
//
//! Task implementing MQTT client communication to other web client through
//! a broker
//!
//! \param none
//!
//! This function
//! 1. Initializes network driver and connects to the default AP
//! 2. Initializes the mqtt library and set up MQTT connection configurations
//! 3. set up the button events and their callbacks(for publishing)
//! 4. handles the callback signals
//!
//! \return None
//!
//*****************************************************************************
void MqttClient(void *pvParameters)
{
long lRetVal = -1;
int iCount = 0;
int iNumBroker = 0;
int iConnBroker = 0;
event_msg RecvQue;
unsigned char policyVal;
connect_config *local_con_conf = (connect_config *)app_hndl;
//
// Configure LED
//
GPIO_IF_LedConfigure(LED1|LED2|LED3);
GPIO_IF_LedOff(MCU_RED_LED_GPIO);
GPIO_IF_LedOff(MCU_GREEN_LED_GPIO);
//
// Reset The state of the machine
//
Network_IF_ResetMCUStateMachine();
//
// Start the driver
//
lRetVal = Network_IF_InitDriver(ROLE_STA);
if(lRetVal < 0)
{
UART_PRINT("Failed to start SimpleLink Device\n\r",lRetVal);
LOOP_FOREVER();
}
// switch on Green LED to indicate Simplelink is properly up
GPIO_IF_LedOn(MCU_ON_IND);
// Start Timer to blink Red LED till AP connection
LedTimerConfigNStart();
// Initialize AP security params
SecurityParams.Key = (signed char *)SECURITY_KEY;
SecurityParams.KeyLen = strlen(SECURITY_KEY);
SecurityParams.Type = SECURITY_TYPE;
//
// Connect to the Access Point
//
lRetVal = Network_IF_ConnectAP(SSID_NAME, SecurityParams);
if(lRetVal < 0)
{
UART_PRINT("Connection to an AP failed\n\r");
LOOP_FOREVER();
}
lRetVal = sl_WlanProfileAdd(SSID_NAME,strlen(SSID_NAME),0,&SecurityParams,0,1,0);
//set AUTO policy
lRetVal = sl_WlanPolicySet(SL_POLICY_CONNECTION,
SL_CONNECTION_POLICY(1,0,0,0,0),
&policyVal, 1 /*PolicyValLen*/);
//
// Disable the LED blinking Timer as Device is connected to AP
//
LedTimerDeinitStop();
//
// Switch ON RED LED to indicate that Device acquired an IP
//
GPIO_IF_LedOn(MCU_IP_ALLOC_IND);
UtilsDelay(20000000);
GPIO_IF_LedOff(MCU_RED_LED_GPIO);
GPIO_IF_LedOff(MCU_ORANGE_LED_GPIO);
GPIO_IF_LedOff(MCU_GREEN_LED_GPIO);
//
// Register Push Button Handlers
//
Button_IF_Init(pushButtonInterruptHandler2,pushButtonInterruptHandler3);
//
// Initialze MQTT client lib
//
lRetVal = sl_ExtLib_MqttClientInit(&Mqtt_Client);
if(lRetVal != 0)
{
// lib initialization failed
UART_PRINT("MQTT Client lib initialization failed\n\r");
LOOP_FOREVER();
}
/******************* connection to the broker ***************************/
iNumBroker = sizeof(usr_connect_config)/sizeof(connect_config);
if(iNumBroker > MAX_BROKER_CONN)
{
UART_PRINT("Num of brokers are more then max num of brokers\n\r");
LOOP_FOREVER();
}
connect_to_broker:
while(iCount < iNumBroker)
{
//create client context
local_con_conf[iCount].clt_ctx =
sl_ExtLib_MqttClientCtxCreate(&local_con_conf[iCount].broker_config,
&local_con_conf[iCount].CallBAcks,
&(local_con_conf[iCount]));
//
// Set Client ID
//
sl_ExtLib_MqttClientSet((void*)local_con_conf[iCount].clt_ctx,
SL_MQTT_PARAM_CLIENT_ID,
local_con_conf[iCount].client_id,
strlen((char*)(local_con_conf[iCount].client_id)));
//
// Set will Params
//
if(local_con_conf[iCount].will_params.will_topic != NULL)
{
sl_ExtLib_MqttClientSet((void*)local_con_conf[iCount].clt_ctx,
SL_MQTT_PARAM_WILL_PARAM,
&(local_con_conf[iCount].will_params),
sizeof(SlMqttWill_t));
}
//
// setting username and password
//
if(local_con_conf[iCount].usr_name != NULL)
{
sl_ExtLib_MqttClientSet((void*)local_con_conf[iCount].clt_ctx,
SL_MQTT_PARAM_USER_NAME,
local_con_conf[iCount].usr_name,
strlen((char*)local_con_conf[iCount].usr_name));
if(local_con_conf[iCount].usr_pwd != NULL)
{
sl_ExtLib_MqttClientSet((void*)local_con_conf[iCount].clt_ctx,
SL_MQTT_PARAM_PASS_WORD,
local_con_conf[iCount].usr_pwd,
strlen((char*)local_con_conf[iCount].usr_pwd));
}
}
//
// connectin to the broker
//
if((sl_ExtLib_MqttClientConnect((void*)local_con_conf[iCount].clt_ctx,
local_con_conf[iCount].is_clean,
local_con_conf[iCount].keep_alive_time) & 0xFF) != 0)
{
UART_PRINT("\n\rBroker connect fail for conn no. %d \n\r",iCount+1);
//delete the context for this connection
sl_ExtLib_MqttClientCtxDelete(local_con_conf[iCount].clt_ctx);
break;
}
else
{
UART_PRINT("\n\rSuccess: conn to Broker no. %d\n\r ", iCount+1);
local_con_conf[iCount].is_connected = true;
iConnBroker++;
}
//
// Subscribe to topics
//
if(sl_ExtLib_MqttClientSub((void*)local_con_conf[iCount].clt_ctx,
local_con_conf[iCount].topic,
local_con_conf[iCount].qos, TOPIC_COUNT) < 0)
{
UART_PRINT("\n\r Subscription Error for conn no. %d\n\r", iCount+1);
UART_PRINT("Disconnecting from the broker\r\n");
sl_ExtLib_MqttClientDisconnect(local_con_conf[iCount].clt_ctx);
local_con_conf[iCount].is_connected = false;
//delete the context for this connection
sl_ExtLib_MqttClientCtxDelete(local_con_conf[iCount].clt_ctx);
iConnBroker--;
break;
}
else
{
int iSub;
UART_PRINT("Client subscribed on following topics:\n\r");
for(iSub = 0; iSub < local_con_conf[iCount].num_topics; iSub++)
{
UART_PRINT("%s\n\r", local_con_conf[iCount].topic[iSub]);
}
}
iCount++;
}
if(iConnBroker < 1)
{
//
// no succesful connection to broker
//
goto end;
}
iCount = 0;
for(;;)
{
osi_MsgQRead( &g_PBQueue, &RecvQue, OSI_WAIT_FOREVER);
if(PUSH_BUTTON_SW2_PRESSED == RecvQue.event)
{
Button_IF_EnableInterrupt(SW2);
//
// send publish message
//
sl_ExtLib_MqttClientSend((void*)local_con_conf[iCount].clt_ctx,
pub_topic_sw2,data_sw2,strlen((char*)data_sw2),QOS2,RETAIN);
UART_PRINT("\n\r CC3200 Publishes the following message \n\r");
UART_PRINT("Topic: %s\n\r",pub_topic_sw2);
UART_PRINT("Data: %s\n\r",data_sw2);
}
else if(PUSH_BUTTON_SW3_PRESSED == RecvQue.event)
{
Button_IF_EnableInterrupt(SW3);
//
// send publish message
//
sl_ExtLib_MqttClientSend((void*)local_con_conf[iCount].clt_ctx,
pub_topic_sw3,data_sw3,strlen((char*)data_sw3),QOS2,RETAIN);
UART_PRINT("\n\r CC3200 Publishes the following message \n\r");
UART_PRINT("Topic: %s\n\r",pub_topic_sw3);
UART_PRINT("Data: %s\n\r",data_sw3);
}
else if(BROKER_DISCONNECTION == RecvQue.event)
{
iConnBroker--;
/* Derive the value of the local_con_conf or clt_ctx from the message */
sl_ExtLib_MqttClientCtxDelete(((connect_config*)(RecvQue.hndl))->clt_ctx);
if(!IS_CONNECTED(g_ulStatus))
{
UART_PRINT("device has disconnected from AP \n\r");
UART_PRINT("retry connection to the AP\n\r");
while(!(IS_CONNECTED(g_ulStatus)) || !(IS_IP_ACQUIRED(g_ulStatus)))
{
osi_Sleep(10);
}
goto connect_to_broker;
}
if(iConnBroker < 1)
{
//
// device not connected to any broker
//
goto end;
}
}
}
end:
//
// Deinitializating the client library
//
sl_ExtLib_MqttClientExit();
UART_PRINT("\n\r Exiting the Application\n\r");
LOOP_FOREVER();
}
