Driver for LLCC68 LoRa chip

[Tiit]

Hi

Has anyone used LLCC68 LoRa chip in some project? I did not find driver in Zephyr but got it somehow working with SX1262 driver. But I think that, it is not working as it should.

If I compare coverage with same settings between SX1276 and LLC68, then LLCC68 seems to not switching antenna to TX (almost no coverage at all -- 15 cm and RSSi is -80 ). I tried with different antennas (chip, spring helix, FPC antenna). SX1276 covers two rooms without antenna attached to the module :)

I see, that Semtech has driver for LLCC68, but I'm a little too noob for driver porting.

Thanks..

Tiit

[Menon]

Hello,

I believe this is a query that fits well in Zephyr Discord.

Maybe other community members will help if they have implemented this before. Sorry, as I couldn't provide much help on this.

Kind Regards,

Abhijith

[Tiit]

Got information from Zephyr Discord and it's now working with SX1262 driver. I put here my overlay example, if anyone is struggling with the same situation:

lora: sx1262@0 {
compatible = "semtech,sx1262";
status = "okay";
reg = <0>;
reset-gpios = <&gpio0 30 GPIO_ACTIVE_LOW>;
busy-gpios = <&gpio0 29 (GPIO_PULL_DOWN | GPIO_ACTIVE_HIGH)>;
dio1-gpios = <&gpio0 28 (GPIO_PULL_DOWN | GPIO_ACTIVE_HIGH)>;
spi-max-frequency = <4000000>;
dio2-tx-enable;
};

The dio2-tx-enable line did the trick.

Thanks.

[Menon]

Hello,

It was good to hear that you solved the issue and got help from the Zephyr community.

Thank you so much for updating it here.

 

Kind Regards,

Abhijith