Data from RPI RFM12B

I finally got the my RPI RFM12 module to receive. Sadly my problem turned out to be a poorly soldiered connection on the module. Ooops.

 

I am now receiving data, but I am confused about the format of the incoming data. I can tell the first number if the node ID, but what is the rest? It doesn't look like my emonTx data since the numbers aren't even close. I can tell the node 15 entries are the time, but what is the rest? I am using minicom on the Raspberry pi to look at the data. 

 

10 79 1 96 1 0 0 79 11
10 82 1 96 1 0 0 79 11
10 81 1 95 1 0 0 72 11
10 82 1 97 1 0 0 79 11
10 73 1 96 1 0 0 79 11
10 105 1 96 1 0 0 79 11
10 72 1 95 1 0 0 72 11
10 79 1 98 1 0 0 79 11
10 76 1 93 1 0 0 72 11
15 116 13 13 13
10 71 1 96 1 0 0 72 11
10 72 1 97 1 0 0 79 11
10 85 0 93 1 0 0 79 11
10 85 0 94 1 0 0 79 11

Jérôme's picture

Re: Data from RPI RFM12B

Can't find any documentation about the format.

Look around here for the decoding part.

 

mharizanov's picture

Re: Data from RPI RFM12B

The first byte is the Node ID of the sender, followed by a series of integers (2 byte); the meaning of these values depends on the sending node, i.e. could be temperature, light level, humidity, voltage, etc etc etc; 

Check for the multinode concept here http://openenergymonitor.org/emon/emonBase/NanodeRF

The RFM2Pi is simply a gateway, it doesn't understand the relayed data; it simply passes it on to emoncms, where you are expected to know what you are processing.

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