[libopencm3-devel] I2C support for STM32F0

Karl Palsson

2016-05-25 17:36:12 UTC

As I remember, f0/f3 have a "new" i2c peripheral, so the
"i2c_common_all" filename is now outdated, it applied to f1, l1,
f2, f4, which was "all" at the time.

No-one to my memory has done much work at overhauling and
unifying the i2c layers for whole families, and it wouldn't
suprise me therefore if f0 i2c isn't as helpful as one might
hope.

Some of the code _may_ work, but you'd need to be digging in the
ref manuals to check, and testing on multiple hardware to do this
refactoring work.

Sorry about how long it took to reply to you, I kept putting it
off, then it just slipped beneahth my list of "mails I need to
reply to too"

Sincerely,
Karl P

Post by Johan
I am trying to use I2C on STM32F0 with libopencm3.
I have found libopencm3/include/libopencm3/stm32/f0/i2c.h which
does the register definitions. But it does not do #include
<libopencm3/stm32/common/i2c_common_all.h> where it seems like
alll functions like i2c_reset and so on exist.
Is there a reason for this, are the functions not supported on
f0? In the f3 version the i2c.h defines function prototypes
directly without using i2c_common_all.h.
Best regards
Johan
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