STM32F0 and Lora(SX1278) TrueSTUDIO project?

[Panagiotis]

I 'm looking for a 100% working example for my MCU (an STM32F030F4P6) at TrueSTUDIO.

Is there such an example?

[Tesla DeLorean]

Probably not.

Likely going to need to find something close, and port. And/or construct in your chosen toolchain.

[Panagiotis]

Ok, even something close would help.

If it's tested and working it 'll be very helpful.

[Tesla DeLorean]

At 433 MHz ? LoRa or LoRaWAN ?

Seem to recall most of ST's LRWAN library examples were for the SX1272 and SX1276 parts. Although I don't think the SX1278 would be significantly different.

If you want something that's drop-n-go look at the hardware/boards the LRWAN software supports out-of-the-box and uses those combinations.

https://www.st.com/en/embedded-software/i-cube-lrwan.html

These things can be ported, but it is not a zero cost exercise.

Beyond that, you could mine github or other open source examples, or use the Semtech libraries more directly, without ST's spin on them.

[Panagiotis]

At 433 MHz, LoRa not LoRaWAN.

[Panagiotis]

2 months later, I have made some progress...:)

I have managed to make the transmitter work!

BUT it does not work as it should: out of the 100 messages it transmits, the receiver receives only 10 to 15...

I have tried sending them every 2.5 Seconds, then every 10 Seconds, every 30 Seconds, but the result is the same.

(this Lora module I 'm using works fine with Arduino)

I 've also tried changing:

-frequency

-Spreading Factor

-Signal Bandwidth

-Transmission Power

-Coding Rate

-SyncWord

-Preamble Length

Without any result.

I have uploaded my code on github, folders Inc and Src (and the whole project in the zip file, just in case).

(the code is a 'mixture' of codes from here and here)

Any help is welcome.