avsa242 / sx1276-lora-spin Goto Github PK

Originally, only LoRa was planned, but the other modulation types could be useful in some cases.

One such possibility is AIS reception, as this chip's tunable range covers the frequencies most often associated with AIS, supports the correct modulation type and appropriate bandwidth setting.

The chip has a reset pin (7). This should be optionally supported at runtime.

The driver currently only has support for the US 915MHz band, when using Channel() (CarrierFreq() is unaffected/is wide open - can still be tuned to any frequency within the SX1276's tunable range). Add support for some other countries.

The mapping of lna gains (0, -6, -12, -24, -26, -48dB) to reg bits (%001..%111) are mostly sequential, but -26 marks a break in the sequence (%110 instead of the assumed %101), so currently -26 and -48 aren't being set correctly. The simple lookdown() table used has to be changed.

This functions like Modulation(), but essentially needs one extra step to fill the same role, and that's to set to OOK or FSK specifically (bits 6..5, ModulationType), if FSK/OOK mode is chosen over LoRa mode.

This should be added in order to be compliant with the spectral authority in various countries. The chip has some built-in support for it.