LP-AM243: Only gptp is supported in SDK, how can I implement other time sync mode application, such as E2E L2 or P2P L4?

Hello,

Which specific SDK version are you planning on using?

From my understanding, the gPTP demos are using linuxptp stack on the Host PC to demonstrate PTP which uses a gptp_config.cfg to run ptp4l. https://software-dl.ti.com/mcu-plus-sdk/esd/AM243X/latest/exports/docs/api_guide_am243x/EXAMPLES_ENET_CPSW_TSN_GPTP.html#autotoc_md1211 

This gptp_config.cfg has properties to configure for P2P or E2E mode (take a look at ptp4l man page: https://linux.die.net/man/8/ptp4l ). Please note that linuxptp is an unmodified open source PTP stack, https://linuxptp.sourceforge.net/ https://linuxptp.nwtime.org/ that TI does not specific make modification/develop on.

-Daolin

Hello Daolin

Thanks for your reply.

We are using mcu_plus_sdk_am243x_09_02_01_05, we know how to configure ptp4l in host pc to act as master, but we don't know how to configure sdk code in am243x for other ptp mode.

Hi cheng guo,

Which port you are working on CPSW or ICSSG ?

Currently we have below examples to demostrate gPTP.

AM243x MCU+ SDK: Ethernet TSN CPSW gPTP TimeReceiver (gPTP Slave) Example

AM243x MCU+ SDK: Ethernet TSN ICSSG gPTP TimeReceiver (gPTP Slave) Example

AM243x MCU+ SDK: Ethernet TSN ICSSG gPTP Bridge Example (ti.com)

cheng guo said:

we don't know how to configure sdk code in am243x for other ptp mode.

You are looking for specific "ptp4l" or any other ?

Regards

Ashwani

Hi Ashwani

We are working on CSPW. On host pc , we use ptp4l as the master.  gptp in working on level 2 (ethernet packet) p2p mode. We want to find some example fo r e2e mode and level 4(udp level). For example, 

This is e2e level2 type, the slave send delay_req_message instead peer_delay_request message.

This is p2p level4 type, the slave send peer delay request message under udp protocol which is different from gptp.

Is there such kind of examples in our SDK? How to configure it to send out such kind of messages? 

Thanks a lot.