topic Re: How do I decide which MEM_BLOCKs need to be enabled? in Wireless MCU

How do I decide which MEM_BLOCKs need to be enabled?

tedwu1 — Thu, 23 Feb 2023 01:53:37 GMT

Hi friend,

I am using Q9021 with BLE SDK 1.0.0. Some definitions of my project are as follows.

How do I decide which MEM_BLOCKs need to be enabled?

Best wishes

Ted Wu

Re: How do I decide which MEM_BLOCKs need to be enabled?

EduardoZamora — Thu, 23 Feb 2023 17:02:51 GMT

Hello @tedwu1,

Memory retention define which memory banks need to be retained in sleep mode.

There are 8 banks of SRAM, and each bank is 8k bytes. Bank 0 is always power on. The power of bank 1-7 can be configured by developer. If the memory bank is not used by application, it can be off to save power.

The BLE stack stores its data in bank 6 and 7. If the BLE is used, bank 6 and 7 should be power on. Developer can configure this macro based on memory usage to optimize power consumption.

Regards,
Eduardo.

Re: How do I decide which MEM_BLOCKs need to be enabled?

tedwu1 — Fri, 24 Feb 2023 01:00:42 GMT

Hi @EduardoZamora

How do I know that bank 1 to bank 5 need to be enabled? Where can I find information?

Best wishes

Ted Wu

Re: How do I decide which MEM_BLOCKs need to be enabled?

EduardoZamora — Fri, 24 Feb 2023 22:46:43 GMT

Hi,

It should depend entirely on memory usage of your application and the power consumption optimization you are considering.

Regards,
Eduardo.