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Any app note / guide on migrating from STM32F2 std. periph. lib. to HAL

Question asked by sdt99 on May 2, 2014
Latest reply on Jun 9, 2015 by Clive One
I have an existing project using  STM32F2 std. periph. library, and now I need to add USB.  The STMCube was just released for STM32F2, but this is HAL based and it seems that HAL is similar but different to std. periph. library.

I have googled and searched this site, but I can't find any documentation that covers the process of migrating a std. periph. lib. project to HAL.  I could take the brute force and ignorance approach and just dive in and gradually beat out all of the compiler errors, but if there is a better approach I'd like to know about it.