Self initializing UART with Pin Stackign

MŻbik.1 · ‎2023-10-25

Hello everyone,

I have not conventional question. My purpose is to create code where 2 pins are used as two different interfaces (I2C1 and USART3). I know that pin Stacking option is just theoretical as no code is generated for this interface. I found solution to it as I:

1. Generated normal code for I2C so it works normal

2. defined huart3 struct and mx_UART3_Init all in user code brackets in usat.c /usatr.h the same as it would be generated from ioc file.

3. Code in fucntion HAL_UART_MspInit and HAL_UART_MspDeInit is generated only for one instance USART1 (My debug uart). So i added "else if" for USART3 instance as if it would be generated by cube. The trouble here is that user code bracket is only inside the "if(instance ==USART1)"

And here is my problem code is working fine, trouble is this that every time i change something in ioc file my code from third point is deleted so i need to take care of it and add again my changes.

Is there any way to stop cube from changing this file? Or maybe there is a bracket i can add so cube won't change my code ?

Pavel A. · ‎2023-10-26

You can just copy the generated usart.c to other file (myusart.c) add that into the project and exclude the generated usart.c from build.

Don't take the Cube too seriously - its present state and a decent kind of "AI assistant" are as far away as the Moon. :) Keep all your project files in source control, review and revert unwanted changes.

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TDK · ‎2023-10-25

No way around this currently. CubeMX just doesn't support dynamic pin assignment to any real degree.

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MŻbik.1 · ‎2023-10-25

Hi TDK,

Ok if there is no such thing, maybe there is a way to just exclude usart.c from being regenerated ?

LCE · ‎2023-10-26

Isn't there the option in MX to "preserve" USER code in project settings, which is somehow marked with comments like "USER code begin / end"?

Pavel A. · ‎2023-10-26

You can just copy the generated usart.c to other file (myusart.c) add that into the project and exclude the generated usart.c from build.

Don't take the Cube too seriously - its present state and a decent kind of "AI assistant" are as far away as the Moon. :) Keep all your project files in source control, review and revert unwanted changes.

MŻbik.1 · ‎2023-10-26

Hi Pavel,

actually you're right. I got so focused on making it this way that I forgot I can just make it my self in another folder. Thank you for good advice.:beaming_face_with_smiling_eyes: