T2080 MPIC Global Timer not multicasting

OXmose — Thu, 15 Apr 2021 00:32:08 GMT

Hello,

I have been implementing a time triggered routine on the T2080RDB PCA platform. I use the global timer A group, more precisely the timer 0.

I set the GTVPRA0 accordingly, the destination register to multicast on all cores. The CTPR is also correctly set for all cores (masks interrupts 0 to 14, my GTVPRA0 is set to have a priority of 15).

However, the interrupt is only triggered on the CPU 0 (I don't use SMT so only one thread is enabled).

I can't find where my mistake is. I am pretty sure I forgot to set a register somewhere, but the fact that the CPU 0 receives the interrupts bugs me. Also, this implementation was first done on the P2020 target (that uses a PIC, not an MPIC) and it worked like a charm.

I was wondering if anyone had an idea about what to check to fix this issue.

Best regards,

Alexy

Re: T2080 MPIC Global Timer not multicasting

ufedor — Thu, 15 Apr 2021 04:33:37 GMT

What is the MPIC_GTDRA0 value?

Re: T2080 MPIC Global Timer not multicasting

OXmose — Fri, 23 Apr 2021 13:39:44 GMT

Hello,

Sorry for the late reply, I was not able to connect for the past week.
The value of MPIC_GTDRA0 is 0x000000FF.

We are investigating a synchronization issue at the moment, maybe the issue comes from here.

Thanks,

Alexy

topic Re: T2080 MPIC Global Timer not multicasting in T-Series

T2080 MPIC Global Timer not multicasting

Re: T2080 MPIC Global Timer not multicasting

Re: T2080 MPIC Global Timer not multicasting