Echelon FTXL - Manual (Page 216)

204 Example FTXL Applications
LON_SET_UNSIGNED_WORD(FbStatus[fbIndex].object_id,
fbIndex);
}
/* Initialize the circuitMap. Initially there are no
* members. If any dynamic NVs have been defined, the
* FTXL LonTalk API will call the LonNvAdded event
* handler during LonInit, which will in turn call
* myNvAdded. The myNvAdded function will add the NV to
* circuitMap assuming that it follows the naming
* convention and its type is SNVT_amp.
*/
memset(circuitMap, 0, sizeof(circuitMap));
/* Create an application task to implement the main
* control loop. */
OSTaskCreateExt(appTask,
NULL,
(void *)&appStack[APP_STACKSIZE],
OS_APPLICATION_PRIORITY_BASE,
OS_APPLICATION_PRIORITY_BASE,
appStack,
APP_STACKSIZE,
NULL,
0);
/* Start the operating system. The rest of the
* application executes under appTask.
*/
OSStart();
return 0;
}
Application Task Function
The application task function, appTask(), is in the main.c file. The appTask()
function performs the following tasks:
• Creates the “event ready” event using the FTXL OSAL
OsalCreateEvent() function. The LonEventReady() callback handler
function uses this event to wake up the application task to process FTXL
network events.
• Calls the LonInit() function to initialize the FTXL LonTalk protocol stack
and FTXL Transceiver. If this function fails, the appTask() function calls
the FTXL OSAL OsalDeleteEvent() function to delete the “event ready”
event.
• If the LonInit() function is successful, the appTask() function:
o Reads the nciNvType configuration property network variable in
non-volatile data to set its type to the last known good value.
o Begins an infinite loop to wait for FTXL network events. When
an event occurs, it calls the LonEventPump() function to process
the event.