stm32f103 usart

aman · ‎2013-05-15

Posted on May 16, 2013 at 07:49

How can i use printf() with usart, if i want to dump the values on serial window after reading the register and printing it's value.

#rtfm #stm32l #usart #usart #discovery

aman · ‎2013-05-15

Posted on May 16, 2013 at 07:58

due to network error ,this post has been posted twice.... my apologies

aman · ‎2013-05-15

Posted on May 16, 2013 at 08:00

due to network error ,this post has been posted twice.... my apologies

Andrew Neil · ‎2013-05-15

Posted on May 16, 2013 at 08:43

You need to consult the documentation for the particular toolset that you're using - that will tell you how it expects you to customise the printf, etc, support to work with the particular interface(s) that you require...

Keil call this ''Retargetting''...

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.

aman · ‎2013-05-15

Posted on May 16, 2013 at 08:52

yes, i am using keil and i had done the retargeting using retarget.c , it is compiling

but can't see the output on serial window or i don't know how to use it.

Tesla DeLorean · ‎2013-05-16

Posted on May 16, 2013 at 13:39

Retargeting Keil's output to a USART is pretty easy. I'd use a terminal app like RealTerm or TeraTerm.

Example of USART2 on a STM32F4-Discovery

https://my.st.com/public/STe2ecommunities/mcu/Lists/STM32Discovery/DispForm.aspx?ID=2606

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