Serial library for STM32

bernier-paul · ‎2012-11-23

Posted on November 23, 2012 at 23:08

Hi,

Does exist any serial library for STM32 ? I searched on this forum and google and I found nothing, I'm looking for a traditional serial lib that allows to send other types of data than char (int32_t, float ...) and that has ''high level'' read functions (with a circular buffer).

Thank you :)

Andrew Neil · ‎2012-11-25

Posted on November 25, 2012 at 16:30

Have you checked the documentation for whatever toolset(s) you're using - to see what support it/they provide(s)...?

bernier-paul · ‎2012-11-25

Posted on November 25, 2012 at 21:38

Heu... I have got an STM32F4DISCOVERY, the only possibilities for the time being are to get and put one byte, that's why I was asking if some lib exists to allow more ''high level'' functions. Otherwise I'll implement it myself, it's just more boring (I already did it on AVR)

Andrew Neil · ‎2012-11-26

Posted on November 27, 2012 at 08:40

''I have got an STM32F4DISCOVERY''

You must also have some software development toolset - Keil, IAR, or whatever.

You need to study the documentation for that toolset - it will tell you what facilities are provided, and what you need to do to specifically customise them to your particular platform.

For Keil, this is known as ''retargetting'' - and they certainly do support things like gets()...

eg,

http://www.keil.com/support/man/docs/armlib/armlib_cjaghcgj.htm

bernier-paul · ‎2012-11-27

Posted on November 27, 2012 at 21:29

Ok now I understand better what you mean, thank you. I use CoIDE and indeed there is a way to retarget printf to an UART. Unfortunately it doesn't look very convenient if I use several UART for example, isn't it ? By the way I wrote an .hpp quite nice to handle UARTs, I have to test and debug it further and then I'll upload it and share on github.

Andrew Neil · ‎2012-11-27

Posted on November 27, 2012 at 22:08

''Unfortunately it doesn't look very convenient if I use several UART for example, isn't it?''

But that's not essentially any different from using multiple devices on a PC - is it?

You have one ''default'' device - called stdout - used by printf, but any additional devices you'd have to open individually, and access via suitable fprintf calls...

bernier-paul · ‎2012-11-29

Posted on November 29, 2012 at 13:07

As promised I put my lib on github. It's a very simple way to use the UARTs of the STM32F4 (transmission/reception). Feel free to make any comments and to report bugs :)

https://github.com/Absurdev/UART_STM32F4