Firmware update using A/B Partion in NXP LPC54s018

[robo_v]

We would like to update the micrcontroller firmware. Can we separate the the flash to A& B partion and NXP LPC54s018 can switch Partion A or B for boot?

[Pavel_Hernandez]

Hello, my name is Pavel, and I will be supporting your case, tell me more about your application this mean that you already have the bootloader with OTA or not?

If not, the recommendation is using the next one.

MCU Bootloader | NXP Semiconductors

Pavel_Hernandez_0-1725401480738.png

Best regards,
Pavel

[robo_v]

Using ISP mode we are downloading the secondary bootloader to RAM and then we are updating the fw image to flash. But in this case,
If the update process did
not finish correctly it can be difficult to recover the old image. So we are looking A/B partion approach

[Pavel_Hernandez]

Hello, just to be clear on what means A/B, are you looking for the OTA process or the recovery image?

Could you elaborate further about?

Best regards,
Pavel

[robo_v]

Yes Am looking for OTA process of updating the uC firmware. During this process even if it is interrupted or stoped in the middle it should not result in the brick/non-responsive state

[Pavel_Hernandez]

Hello, I found the next information maybe could help you.

Firmware Update Using Secondary Bootloader (nxp.com)

external flash resident custom bootloader for LPC54S018 - NXP Community

Best regards,
Pavel