Add support for LR1110 / LR1120 radios

[caveman99]

Semtech introduced a new range of wideband radios. The LR1110 is meant for Sub-GHz bands while the LR1120 is a full band chip ranging up to 2.4 GHz. In addition the chips can capture raw GPS data for post processing.

I have a LR1120 dev board here and will be looking into basic support, just opening the issue for others to chime in.

[jgromes]

Thanks for the heads-up - those are some really interesting chips, especially the LR1120. I will have to see if I can get my hands on a development kit (Mouser seems unwilling to sell me one ...).

On the first glance, it loooks like the SPI interface is the same as for the SX126x/8x series, so it should be pretty straight-forward to get thee up and running.

[jgromes]

@caveman99 FYI in recent commits, I moved parts of the SX126x/8x SPI interface the the Module class, so that could be useful to you should you decide to add the support.

[alistair23]

This looks like a great development platform for the LR1110: https://wiki.seeedstudio.com/Wio-WM1110_Dev_Kit_Hardware_Overview/

Seeed have even announced a product based on it: https://www.kickstarter.com/projects/seeed/sensecap-t1000-track-what-you-care-with-no-boundaries

[bradjc]

On the first glance, it loooks like the SPI interface is the same as for the SX126x/8x series, so it should be pretty straight-forward to get thee up and running.

I just want to note that the LR1110 uses an entirely different SPI interface from the SX12xx chips. The user manual documents the interface.

[jgromes]

@bradjc I meant that the interface "style" seems the same - most functionality is accessed via SPI commands with BUSy signal, just like on the SX126x/8x series (and not via SPI registers like on SX127x), that's the critical thing.

[jgromes]

@caveman99 I recently got my hands on LR1110 dev board, did you start working on this at some point?

[caveman99]

@jgromes i did start with the wio-wm1110 dev kit but didn't get to the Radio part. The bootloader and base Firmware is almost working ;-)

[jgromes]

@caveman99 I had a bit of time to work on this over the holidays, I have a basic SPI interface to the LR1110 and can read the version info:

11:42:59.592 -> [LR1110] Initializing ... 
11:42:59.592 -> RadioLib Debug Info
11:42:59.592 -> Version:  6.3.0.0
11:42:59.592 -> Platform: Adafruit nRF52
11:42:59.592 -> Compiled: Dec 29 2023 10:06:54
11:42:59.592 -> 
11:42:59.776 -> CMDW	1	1	
11:42:59.776 -> SI			
11:42:59.776 -> SO	5	13	
11:42:59.776 -> CMDR	
11:42:59.776 -> SI	0	0	0	0	0	
11:42:59.776 -> SO	7	22	1	3	7	
11:42:59.776 -> Found LR11x0: RADIOLIB_LR11X0_CMD_GET_VERSION = 0x01
11:42:59.776 -> M	LR11x0

So I guess now it's time to start implement all the commands.

[gc9n]

LR1121 it's ready to rock but I cannot talk T her. Any news on the support

[jgromes]

@gc9n I got a little bit stuck with my hardware (and somewhat sidetracked with other stuff). I did get the driver to transmit LoRa, but not to receive yet. So still in progress and not ready to be shared yet ;)

[gc9n]

Hey @caveman99 did you manage to make your board work?
i mean i dont want to mess with SEMTECH github examples etc , is a nightmare , i need a simple Arduino project , i need a library to talk into LR1121 , my board is connected to a ESP32 , and is ready ,

[gc9n]

[gc9n]

@gc9n I got a little bit stuck with my hardware (and somewhat sidetracked with other stuff). I did get the driver to transmit LoRa, but not to receive yet. So still in progress and not ready to be shared yet ;)

Thanks I am looking forward for you to release something, remember , that there is no library out there for this chip (for Arduino IDE)

[jgromes]

More than a year later, but basic LR11x0 support has been added - see https://github.com/jgromes/RadioLib/tree/master/examples/LR11x0

Currently, LoRa transmit and receive is implemented in both blocking as well as interrupt mode. I would also like to implement GFSK support before closing this issue.

Additional features of the LR11x0 like the WiFi and GNSS scanning will be added after that, as I don't yet have a clear idea of what the public API should look like.

[gc9n]

FSK is very very important!
Good job

[jgromes]

In the last couple of commits support for GFSK and LoRa CAD was added. With that I think the basic support for LR11x0 can be considered complete. As mentioned above, support for the features specific to LR11x0 will be added gradually, though hopefully before the next update (6.6.0).