S32GのトピックRe: AVB for S32G274A EVB board

AVB for S32G274A EVB board

Inchul — Tue, 02 Nov 2021 10:43:58 GMT

Hi, Community.

I am using S32G-PROCEVB-S and S32GRV-PLATEVB in stacked mode. I know that sja1105qel on S32GRV-PLATEVB support AVB protocol. And I have tried to transfer AVB packet by the simulator. But I have checked that AVB is not worked. The following is my AVB test environment.

To enable sja1105qel, I have done the following. And I have checked that sja1105qel is worked as the switch.

But I have checked that AVB is not worked. So I think that sja1105qel support AVB protocol but the firmware(binary) is not support AVB. I have checked the firmware on the u-boot source code as the following.

1. Does the firmware exist to enable AVB protocol for sja1105qel on the u-boot?

2. How can I modify the firmware(array) in the source code on sja1105_cfg_evb.c to enable AVB protocol? (Is it possible?)

Thank you and best regards.

Inchul Lee.

Re: AVB for S32G274A EVB board

bpe — Tue, 02 Nov 2021 11:35:20 GMT

SJA1105PQRS Application Hints discuss AVB in Section 7.3. An example configuration
that enables elements of AVB can be found in SJA1105x Configuration Tools
software package, file sja1105QS_TSN.py.

Best Regards,
Platon

Re: AVB for S32G274A EVB board

Inchul — Thu, 04 Nov 2021 02:25:29 GMT

Hi,

I have tried to apply sja1105QS_TSN.py into the target system. But AVB is not worked. So, I have tried to changed SRCMEAT/DESTMEAT of the avb_parameters from 0x026037C0FFEE/0x026037DECADE to 0x00fc70000003/0x00fc70000004 because the Talker(SRCMETA) is 00:fc:70:00:00:03 and the Listener(DESTMETA) is 00:fc:70:00:00:04. But not worked.

This is my system for AVB. If I miss some point to enable AVB, Would you give me the information?

Thank you for your support.

Inchul Lee.

Re: AVB for S32G274A EVB board

bpe — Thu, 04 Nov 2021 03:34:53 GMT

DESTMETA and SRCMETA are the values of meta frames address fields.
They are _not_ the addresses of the communicating stations. Meta frames
convey timestamps to the host. They are discussed in Section 7.3.4 of AH1704.
Please familiarize yourself with the recommended documentation to acquire
sufficient understanding of the equipment/feature you are working with.

Best Regards,
Platon

Re: AVB for S32G274A EVB board

Inchul — Thu, 04 Nov 2021 09:13:33 GMT

I solved it with your advice.

Thank you and best regards.

Inchul Lee.