Add access to RadioHead header #12
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ladyada
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Nov 25, 2018
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looks good to me, want to bump release? |
tannewt
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Nov 26, 2018
Updating https://github.com/adafruit/Adafruit_CircuitPython_RFM9x to 1.1.2 from 1.1.1: > Merge pull request adafruit/Adafruit_CircuitPython_RFM9x#12 from jerryneedell/jerryn_header
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The user may optionally set and receive the 4 byte RadioHead packet header.
I think this mimics the behavior of the Arduino implementation.
The default is to ignore the header as in the past.
On transmit, the user may provide a keyword argument: tx_header with a 4-tuple of bytes.
tx_header = (To,From,ID,Flags)
to set the outgoing header.
On receive, the user can request that the packet header be included at the beginning of the packet via a keyword argument: with_header.
If set to True, the header will be included as the first 4 bytes of the packet and the data payload begins at byte 4.
Also, the user may specify a keyword argument: rx_filter to reject any "non-broadcast" packets not addressed as specified. A "broadcast" message contains 0xff as the To address. Broadcast messages are always received.
If rx_filter is set to a value other than 0xff, then incoming packets with the To field not matching the rx_filter will be ignored unless the To field contains 0xff.
If rx_filter is set to 0xff then all packets are accepted.
Same implementation as for RFM69 adafruit/Adafruit_CircuitPython_RFM69#12
Tested on feather_m0_express with RFM9x_breakout and on Raspberry Pi 3B+ with RFM9x Featherwing