AM623: linux on main core and rtos application on mcu core

Robert Grizilo

Part Number: AM623

Tool/software:

Is there or where can be found some relevant documentation or tutorials on how to write (ccs + library + examples + tools) a RTOS application (firmware) for MCU core that can communicate via IPC with the main Linux core?

I would like to achieve that an Linux application running on AM62 main core prepares a firmware and uploads it to MCU core, then Linux hands over the control to MCU and the main core goes into deep sleep.
MCU then checks some sensors or timers (e.g. thermal sensor on I2C) and, when triggered, wakes up the main Linux core and stops the MCU for the next cycle.

I would be grateful for some good tutorials and guidance on where to begin.

2 months ago

0 Daolin Qiu 2 months ago

TI__Expert 5760 points

Hello,

Our expert is out of office for this week, please ping this thread again if you don't receive a response by next week.

In the mean time have you reviewed the following resources we offer for IPC between Linux and MCU cores?

Multicore Academy - IPC: https://dev.ti.com/tirex/explore/node?node=A__AW2nwtkfXMNMKfHQ-xFw9g__AM62-ACADEMY__uiYMDcq__LATEST

Linux SDK Documentation on IPC: https://software-dl.ti.com/processor-sdk-linux/esd/AM62X/09_02_01_09/exports/docs/linux/Foundational_Components_IPC62x.html

An MCU+SDK Documentation IPC example: https://software-dl.ti.com/mcu-plus-sdk/esd/AM62X/09_02_01_06/exports/docs/api_guide_am62x/EXAMPLES_DRIVERS_IPC_RPMESSAGE_ECHO.html

-Daolin

0 Nick Saulnier 1 month ago

TI__Guru* 78835 points

Hello Robert,

I would suggest that you start with general remote core development + IPC. Once you feel comfortable with all those concepts, then you can start messing around with low power modes.

For getting started with remote core development & IPC, refer to the AM62x academy Multicore documentation. I'm the guy who wrote the documentation, so feel free to ask questions or provide feedback: https://dev.ti.com/tirex/explore/node?node=A__AJa64F6ctzZNbb.TYx4mCA__AM62-ACADEMY__uiYMDcq__LATEST

All the sections have important information, but you'll specifically want to work through Application development on remote cores, and Inter-Processor Communication (IPC).

As an FYI, Low power mode documentation is here: https://software-dl.ti.com/processor-sdk-linux/esd/AM62X/09_02_01_09/exports/docs/linux/Foundational_Components/Kernel/Kernel_Drivers/Power_Management.html

Regards,

Nick

0 Robert Grizilo 1 month ago in reply to Nick Saulnier

Prodigy 30 points

Hello Nick and Daolin.

Thanks for the information, it helped me a lot to start from somewhere. The entire documentation is so large and overwhelming that it's a little bit too easy to get lost :)

I understand the roadmap:
- first is to focus on IPC and remote core
- as the project will gain some working form, start to play with low power modes.

Good advice.

Best regards,
Robert

0 Nick Saulnier 1 month ago in reply to Robert Grizilo

TI__Guru* 78835 points

Hello Robert,

No problem! If you have any questions in the future, feel free to create a new e2e thread to discuss.

Regards,

Nick

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AM623: linux on main core and rtos application on mcu core