CC2652R: Z-Stack: How to send group command to 0xFFFF (sleeping end devices)?

Koen Kanters

Intellectual 925 points

Part Number: CC2652R
Other Parts Discussed in Thread: Z-STACK

I'm running a firmware with "#define MULTICAST_ENABLED FALSE".

To send commands to e.g. group 1 I call afDataRequestExtended with the following parameters:

dstaddrmode: addrModeGroup,

dstaddr: 0x0000000000000001,

destendpoint: 0xFF,

dstpanid: 0x00,

srcendpoint: 0x01,

clusterid: not relevant,

transid: not relevant,

options: 0,

radius: 30,

len: not relevant,

data: not relevant

This sends out the following command with destination 0xFFFD

Now I want to send the same command to destination: 0xFFFF, is this possible?

Use case:

Control IKEA Fyrtur blinds through group commands, the remote included with them is able to send group commands to 0xFFFF and we want to do the same from the Z-Stack adapter.

over 5 years ago

0 Ryan Brown1 over 5 years ago

TI__Guru**** 220197 points

Hey Koen,

A multicast message is sent from a device to a group as a MAC broadcast message: http://dev.ti.com/tirex/content/simplelink_cc13x2_26x2_sdk_4_10_00_78/docs/zigbee/html/zigbee/z-stack-overview.html#multicast-messages

Thus it will not be received by sleepy end devices. You must set RFD_RCVC_ALWAYS_ON to TRUE for ZEDs or use ZR nodes in order to receive these messages. The other option is to send multiple unicast messages to each device.

Regards,
Ryan

0 Koen Kanters over 5 years ago in reply to Ryan Brown1

Intellectual 925 points

Thanks for your answer, as I understand now it's not possible to change the destination to 0xFFFF.

Does that mean the bug is on the ZED side? (as it should have RFD_RCVC_ALWAYS_ON)

0 Ryan Brown1 over 5 years ago in reply to Koen Kanters

TI__Guru**** 220197 points

I would not say there exists a "bug" since ZEDs are intended to sleep (RFD_RCVC_ALWAYS_ON set to FALSE). With RFD_RCVC_ALWAYS_ON set to TRUE it consumes much more current. Broadcast messages are meant for routing devices (ZC/ZR) for which RFD_RCVC_ALWAYS_ON is already always set to TRUE.

Regards,
Ryan

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CC2652R: Z-Stack: How to send group command to 0xFFFF (sleeping end devices)?