devmem2 not working.I have installed devmem2 in my development board to read the peripheral registers however the command is not working /dev/mem opened however it is showing Error at line 75, file devmem2.c (1) [Operation not permitted]

[OlivierK]

However if you can move to openstlinux v3.0 it will likely solve your issue.

[KS.2]

Will try that

[KS.2]

we are working on a sip based on stm32mp157c ,we are using a sdk for building the kernel for a developer package the sdk only supports v2.0

is there an sdk that supports v3.0??

[OlivierK · Accepted solution]

The latest is V3.0

https://www.st.com/en/embedded-software/stm32mp1dev.html#overview&secondary=st-get-software

[KS.2]

the problem.was with the internet connectivity fixed it and installed devmem2 now its working fine

Thank you for your help

[KS.2]

Hi OliverK

Is there a way to establish communication with the coprocessor in the stm32mp157c

[OlivierK]

Hi KS.2 (Community Member)

Please close this topic and open a new one for clarity.

In order to give better visibility on the answered topics, please click on 'Select as Best' on the reply which solved your issue or answered your question. See also 'Best Answers'

For the coprocessor topic this is where to start:

https://wiki.st.com/stm32mpu/wiki/Coprocessor_management_overview