ADC samples flow and Z Stack

Ilya Sokolov1

Intellectual 840 points

Other Parts Discussed in Thread: Z-STACK

Hello.

What is the most suitable way to transmit by Z-stack rather huge (about 1600 samples per second) flow of ADC data?

In the HomeAutomation folder of the stack distributive I've found mostly examples of transmitting commands.

over 8 years ago

0 YiKai Chen over 8 years ago

Guru 735695 points

Basically, this data rate is a little bit too high for Zigbee protocol. I would suggest you to use other protocol like BLE or BT to do it.

0 Ilya Sokolov1 over 8 years ago in reply to YiKai Chen

Intellectual 840 points

Does BT mean BlueTooth?

0 Ilya Sokolov1 over 8 years ago in reply to YiKai Chen

Intellectual 840 points

Anyway, is there any example of flow data transmission using Z-Stack?

0 YiKai Chen over 8 years ago in reply to Ilya Sokolov1

Guru 735695 points

Yes, BT means Bluetooth. There’s no flow data transmission example. You can keep calling AF_DataReqest to do flow transmission.

0 Ilya Sokolov1 over 8 years ago in reply to YiKai Chen

Intellectual 840 points

Thank you.
But, for example, if I replace call of zcl_SendCommand to AF_DataReqest in SampleSwitch example where should I set breakpoint in SampleLight example to see transmitted data?

0 YiKai Chen over 8 years ago in reply to Ilya Sokolov1

Guru 735695 points

I suggest you to refer to GenericApp in Z-Stack mesh 1.0.0. It shows you how to send and receive “Hello world” messages between two nodes.

0 Ilya Sokolov1 over 8 years ago in reply to YiKai Chen

Intellectual 840 points

Thank you.

But is AF_DataRequest reliable? I.e. can I be sure that any data I send with this function will be received?

Or I have to use any other functionality of ZStack?

0 YiKai Chen over 8 years ago in reply to Ilya Sokolov1

Guru 735695 points

There is MAC ack and APS ack when you send message by AF_DataRequest. You can enable APS ack when using AF_DataRequest to send message. If you don't get APS ACK, you can resend the message again.

0 Ilya Sokolov1 over 8 years ago in reply to YiKai Chen

Intellectual 840 points

Thank you.
And one more question:
how can I get end devices list from the coordinator?

0 YiKai Chen over 8 years ago in reply to Ilya Sokolov1

Guru 735695 points

You can use API ZDP_MgmtLqiReq to do LQI request to any node and the LQI response would have device list connect to that node.

0 Ilya Sokolov1 over 8 years ago in reply to YiKai Chen

Intellectual 840 points

Thank you.

But I meant than I need to get the devices list of the coordinator by the code, running on the coordinator.

I tried code like this:

        NLME_GetRequest( nwkNumNeighborTableEntries, 0, &maxItems );
        for (index = 0; index<maxItems;  index++)
        {
          aDevice = AssocFindDevice( index );
          zclSampleSw_DstAddr.addrMode = afAddr16Bit;
          zclSampleSw_DstAddr.addr.shortAddr =  aDevice->shortAddr;
          char theMessageData[] = "Hello!";
         
          byte cnt = bdb_getZCLFrameCounter();
          err = AF_DataRequest( &zclSampleSw_DstAddr, afFindEndPointDesc(0 ),
                         ZCL_CLUSTER_ID_GEN_ON_OFF,
                         (byte)osal_strlen( theMessageData ) + 1,
                         (byte *)&theMessageData,
                         &cnt,
                             AF_DISCV_ROUTE, AF_DEFAULT_RADIUS );
        }

but maxItems is always equal to zero.

0 YiKai Chen over 8 years ago in reply to Ilya Sokolov1

Guru 735695 points

The devices is kept on association list not neighbor table.

0 Ilya Sokolov1 over 8 years ago in reply to YiKai Chen

Intellectual 840 points

Got it.

Thanks.

I used

  maxItems = AssocCount( PARENT, CHILD_FFD_RX_IDLE );

and all worked.

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ADC samples flow and Z Stack