Environment of AG550Q

IoT Modules Automotive Module
1

Hi @Louis.Huang-Q . I have a questions.
My project are using AG550. I am concerning about A/B upgrade. Before I completed to try A/B upgrade(stream way and library way) with adb(linux pc connect to AG550).
In reality, Where will the AG550’s applications run?

Regards
Nam

2

Hi,

The appliaction will run on the active system, for example, when system A is marked “active”, your application will run on system A.

BR,
Louis

3

Thank @Louis.Huang-Q. I got it but With “test_ab_fota_api” and “fwupdate_test”, It is used to upgrade. Where is it’s location? when at any point time,the system want to call it to upgade?

Regards
Nam

4

Hi,

The 2 mentioned point, you can find them at:
…/ql-ol-extsdk-ag550*/sample/test_ab_fota_api/
ql-ol-rootfs/usr/bin/fwupdate_test

And for the timing for calling those function or api, please refer to the actual code, I’m not aware of it, sorry.

BR,
Louis

5

Thank @Louis.Huang-Q. I has a another question.
In the document of AG550Q. It has 7 state of AG550

  • SUCCEED: Default state. The A/B system updates is successful and A/B systems are synchronized.
  • UPDATE: The inactive system is upgrading.
  • BACKUP: The inactive system is synchronizing
  • FAILED: Failed upgrade.
  • WRITEDONE: The inactive system is upgraded
  • NEEDSYNC: The active system is switched and system synchronization is not performed.
  • UNKNOWN_STATUS: Unknown state used for boundary detection in codes.

When ag550 upgrade and sync, the state is UPDATE and BACKUP but because a random reasion(example: the electric is blocked…) after the system reboot the state is FAILED right?

Regards
Nam

6

If the upgrade process was interrupted, it will return as failed.

BR,
Louis

7

Thank @Louis.Huang-Q, In document. It doesn’t mention “UNKNOWN_STATUS” state. What do i need to do when the state is UNKNOWN_STATUS.

Regards
Nam

8

Hi @Louis.Huang-Q

Regard
Nam