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how to set the RAM start sddress of app and bootloader

piepie

I am working on OTA DFU about nRF52810. My refernece project are ble_app_uart\pca10040\s132 and bootloader_secure_ble\pca10040 I find that the RAM start address between are different. This is the start RAM address of APP:

image description This is the start RAM address of bootloader:

image description

I am confusing why they are different? Is there anything I ignored? I am using SDK_14.0.0. How should I set the RAM start sddress of APP and bootloader? thx.

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  • 0

    HI,piepie,

    I'm doing something like you. But there is a place plagued me, nrf52810 the flash enough?

    s132: 140kB

    bootloader: 28KB (24KB dfu bootloader + 4kB bootloader setting)

    ble_app_uart: 25KB

    total:140+28+25 > 192KB

    Do OTA also need double the app space, how do you solve this problem?

  • 0 in reply to Stayhungry

    Hi,

    Legacy bootloader is the bootloader we supported from SDK v6 until SDK v11. It won't be compatible with your current application+softdevice if you are using newer SDK.

    But you can port it to the latest SDK. I don't see any big issue porting that example to newer SDK (and newer Softdevice).

    Yes, I simply calculate application size as what you wrote. It could be smaller if you want to reserver application data.

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  • 0 in reply to Stayhungry

    Hi,

    Legacy bootloader is the bootloader we supported from SDK v6 until SDK v11. It won't be compatible with your current application+softdevice if you are using newer SDK.

    But you can port it to the latest SDK. I don't see any big issue porting that example to newer SDK (and newer Softdevice).

    Yes, I simply calculate application size as what you wrote. It could be smaller if you want to reserver application data.

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