S32K344 OverTheAir PlAN

[jackey267]

hi team: 

1 There is a project using S32K344 at the automobile body control area . 

1.1 in the past ,we had used S32K144 for our product using the  in place  ways to flash the APP firmware by  UDS CAN bus update .the trouble was the the boot loader itself could not be covered.  

2 but now we are try to use S32K344 to out the S32K144 .

2.1 suppose there are  boot loader_A +APP_A +boot loader_B+APP_B +flash driver(running in SRAM) 5 separate images at all .

2.2 how to arrange the OTA update PLAN  with HSE firmware enabled? Shall we put the boot loader into HSE firmware? 

2.3 requires: 

---the both boot loader_A +APP_A +boot loader_B+APP_B must be covered to update .  

---rolling back .

--- no car downtime during update .

how to make this schema come true  in details ?

thanks .

[nxf10035]

Hello,

As following is answer:

2.1 suppose there are boot loader_A +APP_A +boot loader_B+APP_B +flash driver(running in SRAM) 5 separate images at all .

A: The project integrated bootloader or not through customer requirements. For S32K344 support OTA feature. It means that APP A and B can be update by each other. So, the bootloader feature part of the APP.

2.2 how to arrange the OTA update PLAN with HSE firmware enabled?

A: Program enable OTA flag by HSE FW after install HSE FW(AB_SWAP). For how to install HSE FW, you can conduct FAE/DFAE for get the guide.

Shall we put the boot loader into HSE firmware?

A: No

2.3 requires: ---the both boot loader_A +APP_A +boot loader_B+APP_B must be covered to update .  ---rolling back .--- no car downtime during update .how to make this schema come true  in details ?

A: If OTA feature enabled, updating APP have no downtime.

Best Regards!