f28377d cpu2 how to get peripheral owner

Joe Zhu

Intellectual 2540 points

Hi Champion,

When I assign peropheral to CPU2 use "CPUSELx" register, then how to confirm its onwer in CPU2 code?

Because DEV_CFG_REGS just mapping to CPU1, so CPU2 cannot read CPUSELx register.

Thanks!

over 7 years ago

0 Vivek Singh over 7 years ago

TI__Guru** 109165 points

Hi Joe,

You are right. CPUSEL is only mapped to CPU1 which is master core and CPU2 does not have access to it. This information need to be passed to CPU2 from CPU1 via IPC in the user code. Basically if CPU2 want to access any peripheral it can send a query to CPU1 via IPC and get the status.

Regards,

Vivek Singh

0 Joe Zhu over 7 years ago in reply to Vivek Singh

TI__Intellectual 2540 points

Hi Vivek,

So is there other method to know peripheral owner in CPU2?

Thanks!
BR
joe

0 Vivek Singh over 7 years ago in reply to Joe Zhu

TI__Guru** 109165 points

Hi Joe,

As mentioned in last post, user should use IPC method to get this register value from CPU1.

Regards,

Vivek Singh

C2000™︎ microcontrollers

C2000 microcontrollers forum

f28377d cpu2 how to get peripheral owner