A complex system that works is invariably found to have evolved from a simple system that worked.A complex system designed from scratch never works and cannot be patched up to make it work.

Andrew NeilBest answer

Super User

Before getting into printf, do you have the basic HAL UART (or bare-metal) comms working?

printf relies upon that, so you need to have that working first:

https://community.st.com/t5/stm32-mcus-embedded-software/how-to-use-printf/m-p/733964/highlight/true#M56212

Then read this Knowledge base article:

https://community.st.com/t5/stm32-mcus/how-to-redirect-the-printf-function-to-a-uart-for-debug-messages/ta-p/49865

And here's a 3rd-party article on the same:

https://shawnhymel.com/1873/

A complex system that works is invariably found to have evolved from a simple system that worked.A complex system designed from scratch never works and cannot be patched up to make it work.

A

Anonymous

You can refer to the web for that.
I hope it will be helpful.

Cheers :)

mƎALLEm

ST Technical Moderator

Hello,

Same thread as https://community.st.com/t5/stm32-mcus-embedded-software/how-to-use-printf/m-p/736424.

It's the same content but not the same user!

To give better visibility on the answered topics, please click "Best answer" on the reply which solved your issue or answered your question.

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