How to add user function to the elua?

[billtian]

I want to extend some function to the elua using c progam function, but how to achieve this or where can i get some guidance? Thanks!

[jbsnyder]

Hi,

There are a number of ways to do this.  Are you looking to add a platform-specific function or a generic platform function?

If you're looking to add a platform specific module/function you could take a look at an example in the stm32f4 platform:

Function implementations:

https://github.com/elua/elua/blob/master/src/platform/stm32f4/cpu.c

https://github.com/elua/elua/blob/master/src/platform/stm32f4/cpu.h

You can see how they get configured into the build here in the get_platform_modules function:

https://github.com/elua/elua/blob/master/src/platform/stm32f4/build_config.lua

You also need to add the files as in the specific_files line (note the cpu.c):

https://github.com/elua/elua/blob/master/src/platform/stm32f4/conf.lua

Here's also an example commit of adding the enc module to that platform in a single commit:

https://github.com/elua/elua/commit/0e9bbd3f630963517f358885a8e582a589bb86b3

Let me know if you have additional questions.

Best.

-jsnyder

On Sun, Mar 22, 2015 at 8:01 PM, billtian [via eLua Development] <[hidden email]> wrote:

I want to extend some function to the elua using c progam function, but how to achieve this or where can i get some guidance? Thanks!

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