Nucleo L073RZ LORA NODE programs..

ST's code is in the LRWAN libraries (it says Cube, but is just HAL code)

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

The alternative might be to use mbed solutions, or the Semtech stack

I have already download them and use the end node program. It returned an error (fatal error -> not enough space) on the linker. After checked, it linked to the wrong board (which is L053). Then i chose my board (L073RZ) instead. But, it returned too many errors (16 errors). Do u know any links for my case? i searched so many things but still no results on my application.

>>But, it returned too many errors (16 errors).

attach a build log so I might have some chance to see/understand what is going on.

>>i searched so many things but still no results on my application.

Yeah, it's going to be hard to find useful things, software development isn't about searching the internet for solutions and bug fixes, etc. Especially if your questions/answers have unduly vague or non-specific detail.

My preference would be to use Keil uV5, there should be a free license to allow use of STM32 Cortex-M0 parts.