FRDM-KW40Z hybrid mode 802.15.4 cannot work

[benjaminchang]

We are testing FRDM-KW40Z (SCH-28379-C1) Hybrid mode, and installed “KW40Z_Connectivity_Software_1.0.1”. We Followed “BLEDAUG.pdf” section “5.6 Hybrid (Dual-Mode) Bluetooth Low Energy (BLE) Demo Applications User’s Guide and IEEE 802.15.4 Demo Applications” to test.

The “Kinetic BLE Toolbox” APP is installed on an Android phone, and the BLE HEART RATE BLE data can be successfully be received and showed.

Also an IEEE 802.15.4 sniffer is used to observe this over-the-air activity on Channel xx. We found BLE data is OK, but IEEE 802.15.4 sniffer never captured any data!

IEEE 802.15.4 channel 13 is specified in the guide, but after checking the code, we found it is dynamically scanned for a least energy channel. A console message “Based on the ED scan the logical channel 0xNN was selected” is showed. We checked channel 13, and all dynamically scanned channels, but just never any data sniffed. We double checked the sniffer function by another ZigBee coordinator using TWR-KW24.

We also tried (old) Rev.C PCBA, result is the same. Why BLE is ok, but IEEE 802.15.4 broadcast packet failed?

[georgecapraru · Accepted solution]

Hi,

The "BLEDAUG.pdf" is not updated. The functionality described in this document represents the initial implementation of the hybrid BLE/802.15.4 proof of concept.

The 802.15.4 component from the "KW40Z_Connectivity_Software_1.0.1" hybrid demo application is a "MyWirelessApp Coordinator" (see "802154MPDAUG.pdf").

This demo application performs an Energy Scan on the entire channel mask, and chooses the channel with the least energy level.

Then the device is started as an 802.15.4 Coordinator, and wait for 802.15.4 EndDevices to join then PAN. The Coordinator does not send any data on the channel without an device associated to it.

Regards,

George

[benjaminchang]

Hi George,

Just as you said, a device is need in the testing.

Test is working now. We can send text data through console, and sniff the data packet also.

Thank you very much!

Benjamin