Re: nrf51822 mesh example RAM constraints.


Chettimada, Vinayak Kariappa <vinayak.kariappa.chettimada@...>
 

But after adding support for LOW POWER feature got RAM overflow again…
Could you review the use of RADIO_LL_LENGTH_OCTETS_RX_MAX, just a suspicion that its incorrectly used on nRF51, if so, you could be saving few hundred bytes.

Do feel free to send a PR if you fix something.


-Vinayak



From: users@... [mailto:users@...] On Behalf Of Antonio
Sent: Tuesday, April 10, 2018 9:00 AM
To: users@...
Subject: Re: [Zephyr-users] nrf51822 mesh example RAM constraints.


On Apr 9, 2018, at 23:08, Chettimada, Vinayak Kariappa <mailto:vinayak.kariappa.chettimada@...> wrote:

Hi Antonio,

Please take a look at this mail chain: https://lists.zephyrproject.org/g/devel/topic/16760883#1960

a BBC micro:bit with nRF51822 256KB flash and 16 KB RAM can support BLE mesh. Yes, it is stretch on a 16 KB RAM variant, but you can take a look at the output of “make rom_report” to fine tune/reduce RAM usages in your application.

Regards,
Vinayak


Thank you Vinayak,
Got it working after deleting health and level server.

Memory region         Used Size  Region Size  %age Used
           FLASH:      100376 B       256 KB     38.29%
            SRAM:       16264 B        16 KB     99.27%
        IDT_LIST:         132 B         2 KB      6.45%


But after adding support for LOW POWER feature got RAM overflow again…

Memory region         Used Size  Region Size  %age Used
           FLASH:      104320 B       256 KB     39.79%
            SRAM:       16424 B        16 KB    100.24%
        IDT_LIST:         132 B         2 KB      6.45


Since GATT (GATT_PROXY,PB_GATT,Peripherial) support is so memory hungry, can we use PB_ADV instead and do something like
remote provisioning ?

https://infocenter.nordicsemi.com/index.jsp?topic=/com.nordic.infocenter.meshsdk.v0.9.1/group__PB__REMOTE.html
https://infocenter.nordicsemi.com/index.jsp?topic=/com.nordic.infocenter.meshsdk.v0.9.1/md_examples_pb_remote_client_README.html
https://infocenter.nordicsemi.com/index.jsp?topic=/com.nordic.infocenter.meshsdk.v0.9.1/md_examples_pb_remote_server_README.html

Is this feature supported ?
Trying to make something useful out of the NRF51, like a simple low power node mesh device.
But seems they are good only as a beacons for now ;(
Or perhaps someone can recommend the way to provision NRF51 node over the PB_ADV barrier ?

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