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Will it be possible to use the RFM69 in packet mode with the expansion module?

Open brandon3055 opened this issue 2 years ago • 17 comments

Good Afternoon.

I have been experimenting with adding an expansion module to my DIY emontx4. But I quickly discovered that the existing rfm_send function https://github.com/openenergymonitor/emontx4/blob/main/firmware/EmonTxV4CM/EmonTxV4CM_rfm.ino#L122 has a maximum payload size of 56 bytes which is far exceeded when trying to expand to 12 channels.

I would just like to know if this is something that can be fixed. or do I need to switch to the RFM69 native format if I want 12 channels?

Edit: on further investigation, it seems rfm69nTxLib has the same 56 Byte limit. Is it even possible to expand this limit? I think for now I will just try splitting the data across two separate node ids.

brandon3055 avatar Oct 17 '22 11:10 brandon3055