AM5729: Direct communication between two PRU-ICSSs

Jonathan Horne1

Part Number: AM5729

I am using the AM5729 (Beaglebone AI) for some real time programming on the PRU cores. Communication and data sharing between PRU cores in the same PRU-ICSS is possible - using shared memory, interrupts etc. - but is there any similar method for communicating with PRU cores in the other PRU-ICSS without having to go via the CPU? My application would ideally use all 4 PRU cores with direct communication and memory sharing between all 4.

over 3 years ago

0 Vineet Roy over 3 years ago

TI__Mastermind 37435 points

Hi Jonathan,

The two PRU-ICSS sub-systems don't share any special HW (shared memory, Scratch PAD etc) so you will have to implement your own IPC mechanism.

However you don't have to necessarily go via the CPU. The global memory space (eg. L3 SRAM) is accessible to the PRU's so you can write your own shared memory IPC routines

Regards

Vineet

0 Jonathan Horne1 over 3 years ago in reply to Vineet Roy

Prodigy 20 points

Hi Vineet,

Thanks for replying so quickly.

I will have a look into that. I am assuming that global memory space access is relatively slow (at least compared to PRU shared memory access)?

Jon

Processors

Processors forum

AM5729: Direct communication between two PRU-ICSSs