Battery Backedup SRAM on 43341 module

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Anonymous
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Hi,

I am using the Inventek's variant of BCM43341 wifi/ble/nfc module.

I wanted to know, how should I go about allocating space on the 4KB SRAM that is backed up using VBAT, even the module is powered down (VDD).

I wish to save some application context during sleep in this 4KB space and when powered on, I should be able to recover whatever was saved.

Is there any API for allocating data to this specific portion of SRAM?

thanks!

Regards,

Manish

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1 Solution
Anonymous
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Currently no. There is no standard memory map for this. You will have to create a custom map. And then use that to store the data. 

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3 Replies
Anonymous
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Currently no. There is no standard memory map for this. You will have to create a custom map. And then use that to store the data. 

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Anonymous
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Is there an example that I can repurpose to create the memory map for storing into the battery backup SRAM? It does not matter which platform it may be for.

thanks!

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Anonymous
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We have not done this for any platform. But you can check the BCM9WCD1AUDIO platform in SDK 3.5.2 which has a mapping for special RAM in the STM417

You can do something similar