topic Re: RAM usage about KW36 in Wireless MCU

RAM usage about KW36

JiCheng_ZhangXiang — Tue, 30 Mar 2021 07:01:52 GMT

Hello, Nxp

I am using MCUXpresso IDE v11.2.1_4149 developing KW36 applications.

I'am puzzled about the RAM usage after I compiled success, Look at the picature below:

question

1. how much KByte in the RAM was used in the picture?

2. what document defined these section, such as ".bss", ".data", ".text"

3. In the ble sdk demos(wireless uart), what's the relationship betwwen stacksize of task and the micro definition "gTotalHeapSize_c" in the file "app_preinclude.h"

Re: RAM usage about KW36

mario_castaneda — Tue, 30 Mar 2021 18:40:41 GMT

Hi @JiCheng_ZhangXiang,

I hope you are doing great.

1. how much KByte in the RAM was used in the picture?

52248KB

2. what document defined these section, such as ".bss", ".data", ".text"

Please look at the next link

3. In the ble sdk demos(wireless uart), what's the relationship betwwen stacksize of task and the micro definition "gTotalHeapSize_c" in the file "app_preinclude.h"

I am not sure if I am following your question. The gTotalHeapSize_c is the total heap size for the freeRTOS or the bare-metal operative system. The stack size is the minimum memory that the Bluetooth LE, in this case, needs.

Regards,

Mario

Re: RAM usage about KW36

JiCheng_ZhangXiang — Tue, 06 Apr 2021 07:52:33 GMT

hello, mario, thanks for your reply

could you make sure the "link" in the question 2, when I click the "link", it doesn't work.

Re: RAM usage about KW36

mario_castaneda — Tue, 06 Apr 2021 14:35:46 GMT

Hi @JiCheng_ZhangXiang,

Please look at the next link.

https://mcuoneclipse.com/2013/04/14/text-data-and-bss-code-and-data-size-explained/

Regards,

Mario