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  • Case ID: 288175
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Flash the nrf52811 VScode

Fredrik Sannerhaugen

Hello! 

Sorry for asking, im fairly new to SoC on custom boards.

I have now created a custom PCB using the nRF52811 and i want to flash it with an example. ble peripheral example. Im using the nRF Connect together with Visual Studio Code. Im trying to understand the documentation, but i cant find the preprosessor settings, neither the things i need to change according to the documentation. How can i flash my card with this example? is it even possible? I Would be very happy if someone could help me with it. The SoC is connected to the PC so i got that part right. I think what im looking for is in some sort of config file.

im using the nRF 52840 DK for flashing the custom SoC.

Fredrik 

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    Hi Simon!

    Thats okay, i hace created the custom board and i think thats okay, but the problem is that the example is for the nrf52840 i think. In your documentation you can emulate the 52811 on the 52840 DK then upload it following these steps:

    1. Open the example project for your IDE.
    2. In the project settings, change to device "NordicSemiconductor->nRF52811_xxaa".
    3. In the C/C++ preprocessor settings, remove the defines "NRF52" and "NRF52840_XXAA".
    4. Add the preprocessor define "NRF52811_XXAA".
    5. In the linker script settings, adjust the linker script to match the maximum RAM and flash size of nRF52811.
      • ROM END: 0x2FFFF
      • RAM END: 0x20005FFF
    6. Remove the following files from the project: <compiler>_startup_nrf52.s and system_nrf52.c.
    7. Add the following files to the project: <compiler>_startup_nrf52811.s and system_nrf52811.c.
    8. Add the DEVELOP_IN_NRF52840 define to the compile flags. Adding this define will add extra code in SystemInit needed for nRF52840.
    9. Add the NRFX_COREDEP_DELAY_US_LOOP_CYCLES=3 define to ensure correct timing when using nrf_delay_us function.

    But i cant figure out where i find these settings in VS code? thanks

    Fredrik

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  • 0

    Hi Simon!

    Thats okay, i hace created the custom board and i think thats okay, but the problem is that the example is for the nrf52840 i think. In your documentation you can emulate the 52811 on the 52840 DK then upload it following these steps:

    1. Open the example project for your IDE.
    2. In the project settings, change to device "NordicSemiconductor->nRF52811_xxaa".
    3. In the C/C++ preprocessor settings, remove the defines "NRF52" and "NRF52840_XXAA".
    4. Add the preprocessor define "NRF52811_XXAA".
    5. In the linker script settings, adjust the linker script to match the maximum RAM and flash size of nRF52811.
      • ROM END: 0x2FFFF
      • RAM END: 0x20005FFF
    6. Remove the following files from the project: <compiler>_startup_nrf52.s and system_nrf52.c.
    7. Add the following files to the project: <compiler>_startup_nrf52811.s and system_nrf52811.c.
    8. Add the DEVELOP_IN_NRF52840 define to the compile flags. Adding this define will add extra code in SystemInit needed for nRF52840.
    9. Add the NRFX_COREDEP_DELAY_US_LOOP_CYCLES=3 define to ensure correct timing when using nrf_delay_us function.

    But i cant figure out where i find these settings in VS code? thanks

    Fredrik

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