nRF9151 Feather: Memory Map

cptel

1) Can you share the memory map for internal & external Flash?

2) Assuming code space starts at: 0×0001 0000 and ends at 0×000F F000?

3) Are there any partition for AT command data storage such as IMSI, IMEI, etc?
3.a) If yes, can I add my custom parameters there such as serial number and couple additional identifiers?

jaredwolff

@cptel there’s nothing allocated to external flash by default. You can look at nfed/samples/external_flash to see how you can add external flash to your project (using LittleFS)

The default partition config is in nfed/boards/circuitdojo/feather_nrf9151/circuitdojo_feather_nrf9151_pm_static.yml

app: { address: 0x18000, size: 0x70000 }
mcuboot:
  address: 0x0
  placement:
    before: [mcuboot_primary]
  size: 0xc000
mcuboot_pad:
  address: 0x10000
  placement:
    align: { start: 0x8000 }
    before: [mcuboot_primary_app]
  size: 0x200
mcuboot_primary:
  address: 0x10000
  size: 0x78000
  span: [tfm, mcuboot_pad, app]
mcuboot_primary_app:
  address: 0x10200
  size: 0x77e00
  span: [app, tfm]
mcuboot_secondary:
  address: 0x88000
  placement:
    after: [mcuboot_primary]
    align: { start: 0x8000 }
  share_size: [mcuboot_primary]
  size: 0x78000
EMPTY_0:
  address: 0xc000
  size: 0x4000
  placement:
    before: [mcuboot_pad]
tfm_secure:
  address: 0x10000
  size: 0x8000
  span: [mcuboot_pad, tfm]
tfm_nonsecure:
  address: 0x18000
  size: 0x70000
  span: [app]
tfm:
  address: 0x10200
  size: 0x7e00
littlefs_storage:
  address: 0x0
  region: external_flash
  size: 0x1000000

And looks like that 👆️