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Storing variables in standby mode

NZama.1
Associate III

‎2023-02-15 06:32 AM

Can anyone please help me with this problem. I want to store some values while the processor is in Standby mode. As, when it wakes up all the variables are reset. How can i make the variables static in case of standby mode. Any help will be appreciated. Thank you.

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5 REPLIES 5
Javier1
Principal

‎2023-02-15 06:40 AM

which processor?

we dont need to firmware by ourselves, lets talk
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NZama.1
Associate III
In response to Javier1

‎2023-02-15 06:45 AM

It's STM32F407VGT6 Discovery board

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MM..1
Chief III
In response to NZama.1

‎2023-02-15 06:52 AM

STANDBY mode is only ended by aka reset MCU , then your code reinit all, but you can read about RTC backup registers ... This way only under power MCU hold values.

If you need store somethink after power lost , you need EEPROM external or emulated in flash...

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Javier1
Principal
In response to NZama.1

‎2023-02-15 07:35 AM

as @MM..1​ said, it looks like you need to use reset-permeable memories as Flash memory

we dont need to firmware by ourselves, lets talk
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NZama.1
Associate III
In response to NZama.1

‎2023-02-16 05:54 AM

I am using Flash memory of the controller but same issue resides.

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