Inventory Tutorial

Overview

This Tutorial provides a walk-through of the steps to perform Inventory operation using RFID3 API

Create The Project

• Start by creating a new project in Android Studio. For help, see the Android Studio tutorial.
• Refer Hello RFID to prepare basic setup to work with RFID Reader and then follow this guide

Details

A Simple continuous Inventory operation reads all tags in the field of view on all antennas of the connected RFID reader. It uses no filters (pre-filters or post-filters) and the start and stop trigger for the inventory is the default - immediate type. for example, start immediately when reader.Actions.Inventory.perform() is called, and stop immediately when reader.Actions.Inventory.stop() is called

Setting it up

Event and Trigger configuration to setup operation

    // tag event with tag data
    reader.Events.setTagReadEvent(true);
    // application will collect tag using getReadTags AP
    reader.Events.setAttachTagDataWithReadEvent(false);  
    TriggerInfo triggerInfo = new TriggerInfo();    
    triggerInfo.StartTrigger.setTriggerType(START_TRIGGER_TYPE.START_TRIGGER_TYPE_SMART_PERIODIC_INVENTORY);   
    triggerInfo.StartTrigger.Periodic.setPeriod(300); //300ms period   
    triggerInfo.StopTrigger.setTriggerType(STOP_TRIGGER_TYPE.STOP_TRIGGER_TYPE_DURATION)
    triggerInfo.StopTrigger.setDurationMilliSeconds(40); //40ms RF On time   
    // set start and stop trigger    
    reader.Config.setStartTrigger(triggerInfo.StartTrigger);    
    reader.Config.setStopTrigger(triggerInfo.StopTrigger);

Performing operation

start and stop inventory calls

    try {
        reader.Config.powerManagement.isPowerManagementEnabled(true);
            reader.Config.powerManagement.wakeUp();
            // perform simple inventory 
            reader.Actions.Inventory.perform(null, triggerInfo, null);
            // Sleep or wait
            Thread.sleep(5000);   
            // stop the inventory    
            reader.Actions.Inventory.stop();    
         } catch (InvalidUsageException e) {  
                 e.printStackTrace();
            } catch (final OperationFailureException e) {
                e.printStackTrace();
            } catch (InterruptedException e) {     
                 e.printStackTrace();
            }

Grab the results

Gets results in eventreadnotify when reader starts reporting the read tags

        public void eventReadNotify(RfidReadEvents e) {
            TagData[] myTags = reader.Actions.getReadTags(100);
            if (myTags != null) {
                for (int index = 0; index < myTags.length; index++) {
                    Log.d(TAG, "Tag ID " + myTags[index].getTagID());
                }
            }
        }

Closer look

• API call Inventory.perform() starts operation on reader
• API call Inventory.stop() stops operation on reader
• API call getReadTags request to retrieve 100 tags from SDK's internal queue of tags, one can change this number as per tag reading speed or application processing speed

What's Next

• Print various status notification in eventStatusNotify to see inventory start and stop events
• setAttachTagDataWithReadEvent to true and receive each tag data in RfidReadEvents