Add support for the SX126x series of LoRa radios using the
LoRaMAC-Node HAL.
This driver currently makes the following assumptions:
* DIO1 is used as an interrupt line.
* There is an RF switch selecting between the TX and RX ports and
that switch is controlled by DIO2.
* There is either no TCXO or the TCXO is controlled by DIO3.
Specifically, the limitations above mean that modules that use GPIOs
to control the RF switch are currently not supported. Support for such
modules would need changes to the LoRaMAC-Node code.
Signed-off-by: Andreas Sandberg <andreas@sandberg.pp.se>
LoRa radios supported by LoRaMAC-Node have a lot of common
functionality. Zephyr's LoRa implementation for the SX1276 uses
LoRaMAC-Nodes Radio HAL to implement API functionality like send and
recv. The exact same functionality will be used by the SX126x
driver. Facilitate sharing by moving that to a separate source file.
Signed-off-by: Andreas Sandberg <andreas@sandberg.pp.se>
The implementation of the board support routines is shared between all
LoRa drivers that use LoRaMAC-Node. Move them from the SX1276
implementation to a separate source file to facilitate reuse. Make
this source file conditional on CONFIG_HAS_SEMTECH_RADIO_DRIVERS since
it will be used by all LoRaMAC-Node-based drivers.
Signed-off-by: Andreas Sandberg <andreas@sandberg.pp.se>
Provide basic commands that are useful when testing a LoRa
radio. Currently, the shell supports:
> lora conf ...
> lora send ...
> lora recv ...
> lora test_cw ...
Signed-off-by: Andreas Sandberg <andreas@sandberg.pp.se>
