why the end device send the Date Request Frame crazily?

liangliang lou

I have a simple test system based on zigbee networking.The system only has a coordinator and an end device,and the end device join the network formed by the coordinator.At first,when the end device join into the network,the end device will send the Heartbeat frame to the coordinator periodically.I want the coordinator does not acknowledge the end device when receives the the Heartbeat frame sent by the end device.My purpose is to reduce the ZED power consumption because the ZED sends a packet of data and after receiving the acknowledgement form the ZC,the ZED will send a Data Request Frame.

So i use the function zb_SendDataRequest() in the end device to send the heartbeat frame to the coordinator as follows.

zb_SendDataRequest(_NIB.nwkCoordAddress,
SENSOR_DATA_REP_CMD_ID,
rfmemtemp.len,
(uint8*)rfmemtemp.buf,
0,
AF_TX_OPTIONS_NONE,
0 );

Then I found that the ZED can no longer join the Zigbee networking .Using the Packet sniffer software to receive the data passed between ZC and ZED,I found the end device sent the Data Request Frame crazily.As shown in the following figure!

but when i use he function zb_SendDataRequest() to enable the response function as shown in the following code,the end device will join the network successfully.

zb_SendDataRequest(_NIB.nwkCoordAddress,
SENSOR_DATA_REP_CMD_ID,
rfmemtemp.len,
(uint8*)rfmemtemp.buf,
0,
AF_ACK_REQUEST,
0 );

what is wrong with my program?

thank you!

over 13 years ago

0 liangliang lou over 13 years ago

Expert 2350 points

i am so sorry the my title was wrong, not the Data Rquest, but the beacon request ,thank you

0 Rui Zhang69778 over 13 years ago in reply to liangliang lou

Genius 4525 points

beacon request interval is decided by zgDefaultStartingScanDuration, try to check that

0 liangliang lou over 13 years ago in reply to Rui Zhang69778

Expert 2350 points

i don't think this problem is cased by the setting of beacon request interval,because I have changed the interval from 100 milliseconds to 60000 milliseconds,as follows

-DBEACON_REQUEST_DELAY=60000 //default is 100

and when i use the zb_SendDataRequest() function and set the parameter txOptions to FALSE,the ZED can't join in to the network formed by the ZC,It will send the Beacon Request crazily,and the ZC will acknowledge it timely.but be permitted the ZED for ever!

0 Rui Zhang69778 over 13 years ago in reply to liangliang lou

Genius 4525 points

BEACON_REQUEST_DELAY only delay your device starting to send beacon request, not deciding your beacon request interval

Rui

0 liangliang lou over 13 years ago in reply to Rui Zhang69778

Expert 2350 points

where is the beacon request interval defined ?Can you tell me for more detailed information!thank you

0 liangliang lou over 13 years ago in reply to liangliang lou

Expert 2350 points

is it correct as shown in the following picture?

0 Rui Zhang69778 over 13 years ago in reply to liangliang lou

Genius 4525 points

Yes, assign zgDefaultStartingScanDuration with one of those value

0 liangliang lou over 13 years ago in reply to Rui Zhang69778

Expert 2350 points

i have done as you suggested,as shown in the following picture

but the result is same as the original!

0 liangliang lou over 13 years ago in reply to liangliang lou

Expert 2350 points

the current result is shown in the following picture,what is wrong with me!

0 Rui Zhang69778 over 13 years ago in reply to liangliang lou

Genius 4525 points

This is for rejoin. checking Zglobal.c for

// Default starting scan duration
uint8 zgDefaultStartingScanDuration = STARTING_SCAN_DURATION;

0 liangliang lou over 13 years ago in reply to Rui Zhang69778

Expert 2350 points

thank you very much for your help! And I found the end device can join the zigbee network? But i do not understand why my original settings cause the end device can't join the network?

now i use the zb_SendDataRequest() function as follows,

zb_SendDataRequest(_NIB.nwkCoordAddress,
SENSOR_HEART_BEAT_REP_CMD_ID,
rfmemtemp.len,
(uint8*)rfmemtemp.buf,
0,
AF_TX_OPTIONS_NONE,
0 );

I have set the parameter txOptions as AF_TX_OPTIONS_NONE, it not need requesting acknowledgement from the destination.but the ZED still receive the response form the ZC !If i want to send a packet of data in the ZED and does not need response form the ZC when it receive the packet of data,How can i do with the function ?

regards!

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why the end device send the Date Request Frame crazily?