Offer for SX 1280 Application design with STM32157a-dk1

[Sercan Egilmezkol]

Hi,

I have a STM32MP157a-dk1 discovery board and a SX 1280 – Semtech (E28 2G4M27S - E-Byte) module.

With CubeMX I add SPI5 to the architecture and get the outputs (Kernel, TF-A and U-boot files.) Then by using these output files I can generate the DTB file and can flash this at DK1 card side.

Below SPI loopback test is OK also.

https://wiki.st.com/stm32mpu/wiki/How_to_use_SPI_from_Linux_userland_with_spidev

What I want to learn is:

Actually, I am very new to Embedded Linux concept. I don't even know what is the structure of

driver. But as I see I need to apply my SX 1280 Lora IC's communication specs to STM32MP1 series MPU side.

Can any one offer me where to start?

As you can see I am thinking to use MPU side of the IC. Maybe MCU side can also be used as well.

I want to get data from ethernet then need to send this data over SX 1280.

[Sercan Egilmezkol]

Hi again,

For me this question is really important. Can you please check if my decision is right or has gaps and errors?

• I will read SX1280's datasheet and understand its SPI specs.
• Will write a driver (C/C++) code. (I am just trying to execute SX1280 side. Not ethernet side now.)

Sincerely, thanks..