//*****************************************************************************
//
//! This function obtains the current time from a SNTP server if required due
//! to not having current time (when booting up) or periodically to update
//! the time
//!
//! \param None
//!
//! \return 0 on success else error code
//! \return Error Number of failure
//
//*****************************************************************************
long GetCurrentTime()
{
int iSocketDesc;
long lRetVal = -1;
//
// Get the time and date currently stored in the RTC
//
getDeviceTimeDate();
//
// Calculate time difference between the last time we obtained time from a NTP server
//
timeDifference = dateTime.sl_tm_hour - hourSet; // This roughly works, it does however reset after midnight.
//
// Get the NTP time to use with the SSL process. Only call this every 6 hours to update the RTC
// As we do not want to be calling the NTP server too often
//
if (timeDifference > 6 || timeDifference < 0)
{
//
// Create UDP socket
//
iSocketDesc = sl_Socket(AF_INET, SOCK_DGRAM, IPPROTO_UDP);
if(iSocketDesc < 0)
{
CLI_Write("Could not create UDP socket.\n\r");
close(iSocketDesc);
return iSocketDesc;
}
else
{
CLI_Write("Socket successfully created\n\r");
}
g_sAppData.iSockID = iSocketDesc;
//
// Get the NTP server host IP address using the DNS lookup
//
lRetVal = getHostIP((char*)g_acSNTPserver, &g_sAppData.ulDestinationIP);
if( lRetVal >= 0)
{
//
// Configure the recieve timeout
//
struct SlTimeval_t timeVal;
timeVal.tv_sec = SERVER_RESPONSE_TIMEOUT; // Seconds
timeVal.tv_usec = 0; // Microseconds. 10000 microseconds resolution
lRetVal = sl_SetSockOpt(g_sAppData.iSockID,SL_SOL_SOCKET,SL_SO_RCVTIMEO, (unsigned char*)&timeVal, sizeof(timeVal));
if(lRetVal < 0)
{
CLI_Write("Could not configure socket option (receive timeout).\n\r");
close(iSocketDesc);
return lRetVal;
}
}
else
{
CLI_Write("DNS lookup failed.");
}
//
// Get current time from the SNTP server
//
CLI_Write("Fetching Time From SNTP Server\n\r");
lRetVal = GetSNTPTime(GMT_DIFF_TIME_HRS, GMT_DIFF_TIME_MINS);
if(lRetVal < 0)
{
CLI_Write("Server Get Time failed.\n\r");
close(iSocketDesc);
return lRetVal;
}
else
{
hourSet = dateTime.sl_tm_hour; // Set to current hour as we did get the time successfully
CLI_Write("Server Get Time Successful\n\n\r");
}
//
// Close the socket
//
close(iSocketDesc);
}
return 0;
}
//****************************************************************************
//
//! Task function implementing the gettime functionality using an NTP server
//!
//! \param none
//!
//! This function
//! 1. Initializes the required peripherals
//! 2. Initializes network driver and connects to the default AP
//! 3. Creates a UDP socket, gets the NTP server IP address using DNS
//! 4. Periodically gets the NTP time and displays the time
//!
//! \return Returns \b TASK_RET_IN_PROG.
//
//****************************************************************************
int GetNTPTimeTask(void *pvParameters)
{
SlSecParams_t SecurityParams;
long lRetVal = -1;
struct SlTimeval_t timeVal;
static char cTaskOwnState = GET_TIME_TASK_STATE_INIT;
static tGetTime sGetTime;
long OptionLen;
int SetCommitInt;
unsigned char OptionVal;
switch(cTaskOwnState)
{
case GET_TIME_TASK_STATE_INIT:
//
// Start networking service in default STA_MODE state
//
lRetVal = NetStartDefaultState();
if(lRetVal < 0)
{
return TASK_RET_DONE;
}
//
// Set the status as stated
//
sDisplayInfo.ucNetStat = NET_STAT_STARTED;
//
// Set the time zone
//
sGetTime.ucGmtDiffHr = GMT_DIFF_TIME_HRS;
sGetTime.ucGmtDiffMins = GMT_DIFF_TIME_MINS;
//
// Set conneting status
//
sDisplayInfo.ucNetStat = NET_STAT_CONN;
//
// Get the Version Info
//
NetFwInfoGet(&sDisplayInfo.sNwpVersion);
//
// Make the formated string for firmware version
//
sprintf(sDisplayInfo.ucNwpVersion,
"%d.%d.%d.%d.31.%d.%d.%d.%d.%d.%d.%d.%d",
sDisplayInfo.sNwpVersion.NwpVersion[0],
sDisplayInfo.sNwpVersion.NwpVersion[1],
sDisplayInfo.sNwpVersion.NwpVersion[2],
sDisplayInfo.sNwpVersion.NwpVersion[3],
sDisplayInfo.sNwpVersion.ChipFwAndPhyVersion.FwVersion[0],
sDisplayInfo.sNwpVersion.ChipFwAndPhyVersion.FwVersion[1],
sDisplayInfo.sNwpVersion.ChipFwAndPhyVersion.FwVersion[2],
sDisplayInfo.sNwpVersion.ChipFwAndPhyVersion.FwVersion[3],
sDisplayInfo.sNwpVersion.ChipFwAndPhyVersion.PhyVersion[0],
sDisplayInfo.sNwpVersion.ChipFwAndPhyVersion.PhyVersion[1],
sDisplayInfo.sNwpVersion.ChipFwAndPhyVersion.PhyVersion[2],
sDisplayInfo.sNwpVersion.ChipFwAndPhyVersion.PhyVersion[3]);
//
// Set next task state
//
cTaskOwnState = GET_TIME_TASK_STATE_CONN;
//
// Signal display refresh
//
DisplayRefresh();
break;
case GET_TIME_TASK_STATE_CONN:
//
// Initialize AP security params
//
SecurityParams.Key = (signed char *)SECURITY_KEY;
SecurityParams.KeyLen = strlen(SECURITY_KEY);
SecurityParams.Type = SECURITY_TYPE;
//
// Connect to Access Point
//
lRetVal = NetWlanConnect(SSID_NAME,&SecurityParams);
//
// Failed to connect to AP, kill the task
//
if(lRetVal != 0)
{
return TASK_RET_DONE;
}
//
// Check if this image is booted in test mode
//
sl_extLib_OtaGet(pvOtaApp,EXTLIB_OTA_GET_OPT_IS_PENDING_COMMIT,
&OptionLen,&OptionVal);
if(OptionVal == true)
{
SetCommitInt = OTA_ACTION_IMAGE_COMMITED;
sl_extLib_OtaSet(pvOtaApp, EXTLIB_OTA_SET_OPT_IMAGE_COMMIT,
sizeof(int), (_u8 *)&SetCommitInt);
//
// Set status
//
g_ulSysState = SYS_STATE_TEST_REBOOT;
DisplayRefresh();
//
// Reboot the MCU
//
cTaskOwnState = GET_TIME_TASK_STATE_DONE;
break;
}
//
// Set the status
//
sDisplayInfo.ucNetStat = NET_STAT_CONNED;
DisplayRefresh();
//
// Signal the network start
//
TaskSyncObjSignal(&g_NetStatSyncObj);
//
// Set next task state
//
cTaskOwnState = GET_TIME_TASK_STATE_OPEN_SOCK;
break;
case GET_TIME_TASK_STATE_OPEN_SOCK:
//
// Create UDP socket
//
sGetTime.iSocket = sl_Socket(AF_INET, SOCK_DGRAM, IPPROTO_UDP);
//
// Failed to create a socket, kill the task
//
while(sGetTime.iSocket < 0)
{
return TASK_RET_DONE;
}
//
// Set socket time option
//
timeVal.tv_sec = 20;
timeVal.tv_usec = 0;
sl_SetSockOpt(sGetTime.iSocket,SOL_SOCKET,SL_SO_RCVTIMEO, &timeVal,
sizeof(timeVal));
//
// Initialize Server Index
//
sDisplayInfo.ucServerIndex = 0;
DisplayRefresh();
//
// Set next task state
//
cTaskOwnState = GET_TIME_TASK_STATE_GET_IP;
break;
case GET_TIME_TASK_STATE_GET_IP:
//
// Get the NTP server host IP address using the DNS lookup
//
lRetVal = NetGetHostIP((char*)g_acSNTPserver[sDisplayInfo.ucServerIndex],
&sGetTime.ulNtpServerIP);
sDisplayInfo.ulServerIP = sGetTime.ulNtpServerIP;
DisplayRefresh();
//
// Set the net task state based on return value
//
if(lRetVal >= 0)
{
//
// Go to get time
//
cTaskOwnState = GET_TIME_TASK_STATE_GET_TIME;
}
else
{
//
// Go back and try a new NTP server
//
cTaskOwnState = GET_TIME_TASK_STATE_SET_SERVER;
}
break;
case GET_TIME_TASK_STATE_GET_TIME:
//
// Get the NTP time and display the time
//
lRetVal = GetSNTPTime(&sGetTime);
DisplayRefresh();
//
// On failure go back and try a new NTP server
//
if(lRetVal != 0)
{
//
// Chech and wait if we are disconnected
//
while( !NetIsConnectedToAP() )
{
}
cTaskOwnState = GET_TIME_TASK_STATE_SET_SERVER;
}
//
// End the task if Reboot was requested
//
if(g_ulSysState == SYS_STATE_REBOOT)
{
cTaskOwnState = GET_TIME_TASK_STATE_DONE;
}
//
// Set some sleep
//
TaskSleep(5*1000);
break;
case GET_TIME_TASK_STATE_SET_SERVER:
strcpy((char *)sDisplayInfo.ucUTCTime,"NTP Server Error. Retrying...");
sDisplayInfo.ucLocalTime[0]='-';
sDisplayInfo.ucLocalTime[1]='\0';
sDisplayInfo.ucServerIndex
= ((sDisplayInfo.ucServerIndex + 1)%NOF_NTP_SERVER);
cTaskOwnState = GET_TIME_TASK_STATE_GET_IP;
DisplayRefresh();
break;
default:
//
// Disconnect and stop networking service
//
NetStop();
sDisplayInfo.ucNetStat = NET_STAT_OFF;
DisplayRefresh();
//
// Reboot nonw
//
RebootMCU();
//
// Return task done
//
return TASK_RET_DONE;
}
//
// Return task in progress
//
return TASK_RET_IN_PROG;
}
//****************************************************************************
//
//! Task function implementing the gettime functionality using an NTP server
//!
//! \param none
//!
//! This function
//! 1. Initializes the required peripherals
//! 2. Initializes network driver and connects to the default AP
//! 3. Creates a UDP socket, gets the NTP server IP address using DNS
//! 4. Periodically gets the NTP time and displays the time
//!
//! \return None.
//
//****************************************************************************
void GetNTPTimeTask(void *pvParameters)
{
int iSocketDesc;
long lRetVal = -1;
UART_PRINT("GET_TIME: Test Begin\n\r");
//
// Configure LED
//
GPIO_IF_LedConfigure(LED1|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();
}
//
// 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);
//
// Create UDP socket
//
iSocketDesc = sl_Socket(AF_INET, SOCK_DGRAM, IPPROTO_UDP);
if(iSocketDesc < 0)
{
ERR_PRINT(iSocketDesc);
goto end;
}
g_sAppData.iSockID = iSocketDesc;
UART_PRINT("Socket created\n\r");
//
// Get the NTP server host IP address using the DNS lookup
//
lRetVal = Network_IF_GetHostIP((char*)g_acSNTPserver, \
&g_sAppData.ulDestinationIP);
if( lRetVal >= 0)
{
struct SlTimeval_t timeVal;
timeVal.tv_sec = SERVER_RESPONSE_TIMEOUT; // Seconds
timeVal.tv_usec = 0; // Microseconds. 10000 microseconds resolution
lRetVal = sl_SetSockOpt(g_sAppData.iSockID,SL_SOL_SOCKET,SL_SO_RCVTIMEO,\
(unsigned char*)&timeVal, sizeof(timeVal));
if(lRetVal < 0)
{
ERR_PRINT(lRetVal);
LOOP_FOREVER();
}
while(1)
{
//
// Get the NTP time and display the time
//
lRetVal = GetSNTPTime(GMT_DIFF_TIME_HRS, GMT_DIFF_TIME_MINS);
if(lRetVal < 0)
{
UART_PRINT("Server Get Time failed\n\r");
break;
}
//
// Wait a while before resuming
//
MAP_UtilsDelay(SLEEP_TIME);
}
}
else
{
UART_PRINT("DNS lookup failed. \n\r");
}
//
// Close the socket
//
close(iSocketDesc);
UART_PRINT("Socket closed\n\r");
end:
//
// Stop the driver
//
lRetVal = Network_IF_DeInitDriver();
if(lRetVal < 0)
{
UART_PRINT("Failed to stop SimpleLink Device\n\r");
LOOP_FOREVER();
}
//
// Switch Off RED & Green LEDs to indicate that Device is
// disconnected from AP and Simplelink is shutdown
//
GPIO_IF_LedOff(MCU_IP_ALLOC_IND);
GPIO_IF_LedOff(MCU_GREEN_LED_GPIO);
UART_PRINT("GET_TIME: Test Complete\n\r");
//
// Loop here
//
LOOP_FOREVER();
}
