How can I transfer numbers that I input on my STM32 controller into a variable in cubeide?

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The operating system that I am using is Windows. The programs that I am using are CubeIDE and TouchGFX. The full name of the microcontroller is STM32H750B-DK.

I have implemented some code for my releys to do certain combinations of opening and closing. I have also programmed a keyboard on which I can input numbers and this numbers appear on the screen. The thing that I am trying to do is to write numbers on the STM32 controller and make them store into a variable in the code so this specific input can be used once I launch the part of the code where releys gain and lose contact.

I am not looking for a specific answer, I would just like to know where to start.

What I have tried:

I started learning about UART and flash memory.

Posted 24-Aug-23 3:25am

Member 16074047

Updated 28-Aug-23 12:31pm

Deeksha Shenoy

v3

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[no name] 24-Aug-23 15:16pm

"Everything" points to a "discovery kit" if you want to learn your STM32.

https://www.st.com/resource/en/user_manual/DM00547983-.pdf

Member 16074047 25-Aug-23 1:43am

thank you for your help

2 solutions

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Mike Hankey · Answer 1 · 2023-08-24T09:28:00

Solution 1

The STM32H750B-DK, and most STM32 devices do not have any EEPROM available so you will have to add a EEPROM chip to persist the data you require.

MicroChip also has a chip, the 47C04-E/P that is a RAM chip that automagically backs up the RAM to EEPROM when power is lost.

Posted 24-Aug-23 9:28am

Mike Hankey

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Member 16074047 25-Aug-23 1:43am

alright, thank you.

CPallini · Answer 2 · 2023-08-24T20:12:00

Solution 2

Depending on your needs, you may also implement emulated EEPROM in flash. See How to use EEPROM emulation on STM32 MCUs.

Posted 24-Aug-23 20:12pm

CPallini

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Member 16074047 25-Aug-23 2:20am

alright, will have a look. Thanks.

CPallini 25-Aug-23 2:23am

You are welcome.