STM32F1/F4 incompatible I/O

picguy2 · ‎2011-12-08

Posted on December 08, 2011 at 19:34

From their respective RMs:

STM32F1... 0x4002 2000 - 0x4002 23FF Flash memory interface

STM32F4... 0x4002 2000 - 0x4002 23FF GPIOI

Thus a project predicated on STM32x compatibility must have at least different I/O base addresses based on processor type. Damn!

I guess I have to say it again, â€œsubstantial compatibilityâ€� or in STâ€™s case, â€œcompatibleâ€�, means incompatible. Now I have to go through, identify all the differences and come up with a way to select the proper include files.

Does anyone know if the (possibly subset of) I/O offset address are always the same?

sbmeirow · ‎2011-12-12

Posted on December 13, 2011 at 06:27

If you compile a list, please post.

hpipon957 · ‎2011-12-13

Posted on December 13, 2011 at 21:02

Hi

The memory mapping changes of some peripheral blocks are quite a small difference. It is to be noted that there are various larger differences in the peripheral blocks themselves.

- the clock module and internal bus clock configuration is quite different

- the peripheral pin configuration is quite different

- the Flash modules are very different (rather than a 1k, 2k or 4k Flash granularity that the F1 has the F4 has different Flash sector sizes from 16k to 128k which makes it totally incompatibe with file system implementations).

I am working on a document showing the differences (and how to make a project compatible will all types) here:

http://www.utasker.com/docs/STM32/uTaskerV1.4_STM32_Developers_Document.pdf

Regards

Mark

http://www.uTasker.com