RAM & ROM Specification nrf52840 S140

RE: RAM & ROM Specification nrf52840 S140

lmouelo — Tue, 14 Aug 2018 12:15:46 GMT

devzone.nordicsemi.com/.../nrf52840_5F00_xxaa.map

this is the complete file nrf52840_xxaa.map

RE: RAM & ROM Specification nrf52840 S140

lmouelo — Tue, 14 Aug 2018 08:57:31 GMT

i have this

==============================================================================

Total RO Size (Code + RO Data) 46076 ( 45.00kB)
Total RW Size (RW Data + ZI Data) 13040 ( 12.73kB)
Total ROM Size (Code + RO Data + RW Data) 46176 ( 45.09kB)

==============================================================================

Here i use 45.09kB of Rom Size and 12.73kB of RAM size ?

But what is the total size of the memory Ram and Rom on nrf52840 S140.

RE: RAM & ROM Specification nrf52840 S140

Bjørn Kvaale — Tue, 14 Aug 2018 08:17:25 GMT

Take a look at the nrf connect for desktop programmer app. There, you can read out the ROM usage & where the softdevice, application and/or bootloader are located in flash. This documentation might be helpful for Keil. Take a look at the bottom of the map file (e.g. nrf52832_xxaa.map in the _build folder), where you can see the different ROM & RAM sizes. Here is an example below:

    Total RO  Size (Code + RO Data)                22320 (  21.80kB)
    Total RW  Size (RW Data + ZI Data)             10648 (  10.40kB)
    Total ROM Size (Code + RO Data + RW Data)      22400 (  21.88kB)

==============================================================================

I am not sure whether you have the graphical RAM & ROM usage in Keil like you do in SES, but you can also see how much ROM & RAM you've allocated in the Target tab under Options for Target in Keil.

RE: RAM & ROM Specification nrf52840 S140

lmouelo — Mon, 13 Aug 2018 09:51:22 GMT

like this but on uVsion keil.

RE: RAM & ROM Specification nrf52840 S140

lmouelo — Mon, 13 Aug 2018 09:46:08 GMT

thank's for your answer.

But now I would also like to see in real time the RAM and ROM consumption (in %) of the nrf52840 board with uvsion keil.
But I don't see how to do on IDE

RE: RAM & ROM Specification nrf52840 S140

Bjørn Kvaale — Mon, 13 Aug 2018 09:00:16 GMT

Take a look at the softdevice release notes when you download the softdevice. This documentation can also be found here:nRF5_SDK_15.0.0_a53641a\components\softdevice\s140\doc\ In addition, there is some more information available in the softdevice specifications in Section 14.1 "Memory Resource map & Usage".