Inquiry on OpenPLC Yocto Layer/Recipe Support for STM32MP157-DK2

[Deepak_nilumbo]

Hello,

I am currently working with the STM32MP157-DK2 platform and would like to integrate OpenPLC into my Yocto-based Linux distribution.

I would like to inquire whether STMicroelectronics provides any existing Yocto layer or recipe for OpenPLC. If no official support is available, I would appreciate guidance on the recommended approach to create a custom Yocto recipe for integrating OpenPLC into the build system.

Specifically, I am looking for best practices regarding:

• Creating a custom layer for OpenPLC
• Writing a BitBake recipe for OpenPLC (including dependencies and build steps)
• Integrating OpenPLC runtime with the STM32MP1 ecosystem
• Any potential compatibility considerations with the STM32MP157-DK2

Any references, documentation, or examples would be highly helpful.

[Erwan SZYMANSKI]

Hello @Deepak_nilumbo ,
Your question is more a Yocto generic question than a STM32MPU specific request.

I am not so aware of OpenPLC project, but if you know that you can make it run on STM32MP1, it is definitely possible to create a Yocto layer for this.

I would recommend you to document yourself on Yocto build system, and the big main steps you need:

• How to create a new layer
• How to create a new recipe
• How to override some existing recipes (bbappend: if you need for example to modify the OpenSTLinux Linux kernel by applying your own patch for example)
• How to integrate the new layer in the Yocto build path
• How to manage dependencies at compilation, deployment...

I can ping you some article presents on the wiki, but the generic Yocto documentation will be out of ST wiki.

• https://wiki.st.com/stm32mpu/wiki/How_to_create_a_new_open_embedded_layer
• https://wiki.st.com/stm32mpu/wiki/How_to_create_your_own_distribution

Kind regards,
Erwan.