send packet to end device from gateway

[Danny Lee]

Hi,

I have the mDot connected to gateway and able to see payload including RSSI, lsnr and etc on the nodeRed.

Now, I would like to configure mDot to receive a packet which includes the RSSI from gateway to the mDot. (not the RSSI received at gateway from mDot)

How could I achieve this? (using both AT commands or mbed lib)

Thank you

Regards,

[Leon Lindenfelser]

Hi Danny,

The AT commands AT+RSSI and AT+SNR will display RSSI and SNR of downlink packets. Call getRssiStats() and getSnrStats() from the library to get the same information.
If you are interested, AT+PING or ping() get you the RSSI and SNR of uplink packets.

Kind regards,
Leon

[Micheal Le]

Hi Danny,

You can create lora input and output nodes then insert a function node between them.

• This reply was modified 7 years, 4 months ago by Micheal Le.
• This reply was modified 7 years, 4 months ago by Micheal Le.
• This reply was modified 7 years, 4 months ago by Micheal Le.
• This reply was modified 7 years, 4 months ago by Micheal Le.
• This reply was modified 7 years, 4 months ago by Micheal Le.

[Danny Lee]

Hi,

Yes, I understand that I have to create lora input and output nodes and insert a function node between them on nodeRed but I am not sure about what code I need to insert inside of a function node to setup downlink packets

Thanks
Danny

[Leon Lindenfelser]

Hi Danny,

Take a look at this.
http://nodered.org/docs/getting-started/second-flow.html
You can modify it to trigger with a lora input node and send the output to a lora output node. Assuming you are using class A, sending down to an endpoint can only happen after an up link packet.

Leon

[Danny Lee]

Hi Leon,

If I just connect input node to output node without function node, would gateway be sending exact same data that was received from mDot?

Thank you

[Leon Lindenfelser]

yes

[Danny Lee]

Thank you so much

Regards,

[Author]

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