S32E2 IPCF latency timings between M33 and R52

PrabhanjanKopp — Fri, 11 Sep 2026 14:01:04 GMT

I am working with S32E2 and configuring the IPCF framework and here is my setup

Device: S32E288
IPCF transport: Shared Memory + MRU notification
Communication: M33 ↔ R52
IPCF channel type: Managed channel
1 IPCF channel configured
Interrupt mode (not polling)
Ping/Pong RTT test implemented

Communication is functioning correctly in both directions.

I use STM to measure the timing ticks between the 2 cores.

Measurement flow:

R52:

timestamp

send PING

M33:

receive PING

immediately send PONG from RX callback

R52:

receive PONG

compute RTT

The values computed for a STM running on 24Mhz are close to 200us RTT(Round trip time). My transport overhead is about 30us but the transfer itself takes up bulk of the time. I have tried various things like increasing MRU IRQ notification but has not improved the timings. Having optimisation in code from -o0 to -o1 helped but -o2 didnt make any difference. The payload itself is 16 bytes.

Questions:
1. what is expected IPCF latency for managed /unmanaged channels.

2. can we acheive a low double digit latency?

If you need any more details, please reply back.

Re: S32E2 IPCF latency timings between M33 and R52

Joey_z — Mon, 14 Sep 2026 02:57:37 GMT

Hi,PrabhanjanKopp

Thank you for contacting us.

For your testing scenario, you can try to refer to GreenVIP. The Loop Time is about 20-30us.(S32ZE_GreenVIP_1.x.1/doc/UG_S32ZE_GreenVIP.pdf)

Joey_z_0-1789354232929.png

Joey_z_1-1789354243644.png

If you have other issue, you can contact us at any time.

Joey

S32Z/E中的主题 S32E2 IPCF latency timings between M33 and R52

S32E2 IPCF latency timings between M33 and R52

Re: S32E2 IPCF latency timings between M33 and R52