Assistance Required for M4 Controller Implementation in OSDMP157F

[Dinesh S]

I am currently working with the M4 core in the OSDMP157F and encountering some issues. Specifically:

I have implemented the process of transferring the ELF file to the /lib/firmware directory and enabling and starting the M4 core. Could you please confirm if this is the correct approach?

I am facing difficulties with connecting the M4 core via IP and TTY. Additionally, I am unable to read GPIO pins from the M4 core. Could you suggest alternative methods to achieve GPIO pin reading from the M4 controller?

Looking forward to your guidance on these issues.

[Neeraj Dantu]

Dinesh,

Check out this coarse material that walks you through working with the M4 core on OSD32MP1(STM32MP1): https://octavosystems.com/courses/getting-started-with-embedded-linux/.

Here is another resource for M4 development from ST: https://wiki.st.com/stm32mpu/wiki/Getting_started/STM32MP1_boards/STM32MP157x-EV1/Develop_on_Arm%C2%AE_Cortex%C2%AE-M4/Modify,_rebuild_and_reload_a_firmware.

Best,
Neeraj

[Dinesh S]

Thank you sir. but what need to do for the gpio reading from cm4 sir?

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