Nrf52810 requires Master and slave mode, how to choose the SoftDevice? ?

[TylerDon_123]

1.I used Nrf52810 and the flash size is 192KB. I now need Master mode and slave mode. The SoftDevice I chose is S132 (S112 slave mode only). I found that S132 (130KB) + Bootloader (32kB) has occupied 162kB of the chip, and only 30Kb is left for the appli。

2.how is Nrf52810 Flash allocated？？The following will take up Flash (192KB)? ?

• MBR
• SoftDevice
• Application
• Bootloader
• MBR parameter storage
• Bootloader settings

[awneil]

TylerDon_123 said:

I now need Master mode and slave mode

Then the nRF52810 is probably not a good choice!

The nRF52810 is a cut-down low-memory chip specifically for simple applications.

If you're needing to do Master and Peripheral simultaneously, the nRF52832 is probably a better choice.

At least, I would strongly recommend that you get this working first on nRF52832. Once you have it working, then you can have an informed basis for thinking about whether it's worthwhile - or even possible - to optimise it for the smaller chip.

As the old saying goes, "Premature optimisation is a root of all kinds of evils"

https://devzone.nordicsemi.com/f/nordic-q-a/48552/code-size-on-nrf52810-with-ble_app_template-example/192623#192623

https://devzone.nordicsemi.com/f/nordic-q-a/47627/running-ble_app_uart_c-on-a-nrf-52810-error-compiler-generates-fpu-instructions-for-a-device-without-an-fpu-check-__fpu_present/188997#188997

https://devzone.nordicsemi.com/f/nordic-q-a/47627/running-ble_app_uart_c-on-a-nrf-52810-error-compiler-generates-fpu-instructions-for-a-device-without-an-fpu-check-__fpu_present/189036#189036

[TylerDon_123]

If I use SWD download, do I need BOOTLOADER? Can you get rid of it?

[Øyvind]

Hello, 

I agree with awneil, the nRF52832 is a better choice if you need S132.

how is Nrf52810 Flash allocated？

 Have a look at the nRF52810 Memory map.

The following will take up Flash (192KB)?

 From the Master Boot Record and Bootloader section in the S132 SoftDevice Documentation:
"The MBR is necessary for the bootloader to update the SoftDevice, or to update the bootloader itself. The MBR is a required component in the system. The inclusion of a bootloader is optional."

More information on the SoftDevice and Application can be found here.

If I use SWD download, do I need BOOTLOADER? Can you get rid of it?

No, you do not need the bootloader if you use SWD.

Kind regards,
Øyvind

[TylerDon_123]

Ths

[awneil]

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