Original implementation only checked whether the user had _selected_ the
clock, not whether it had actually switched to the clock or not. For
almost all cases, this made this function either a no-op, if you _had_
selected the clock, or a blocking loop if you hadn't selected it ahead
of time.
Fixes github issue #687
Original commits, while appearing clean and tidy, hadn't even been
compile tested. Trust no-one. Not even Scully.
Fixes: 770878e7b4ac12513e121e087261ca0972ba04e6
Fixes: 86d20ef00c00a14d7a4f0b834b9b608b2dd3638a
Fixes: 05ff0df32226dc28e22b98afde07bb886af9ddc9
Let's not hide the fact that these variables are structs/enums.
We are filling up the namespace badly enough, we should be prefixing as
much as we can with the module names at least. As users we already run
often enough in namespace colisions we don't have to make it worse.
* CLOCK_3V3_xxx enums renamed to RCC_CLOCK_3V3_xxx
* clock enums (PLL, HSI, HSE ...) prefixed with RCC_
* scale enum of pwr module prefixed with PWR_
Basic helpers to at least support common configurations for the f401.
Original submission specified 5 wait states, but the reference manual and other
reviewers all believe that 2ws is sufficient for these modes.
Signed-off-by: Karl Palsson <karlp@tweak.net.au>
This adds MCO source selection to some targets, and removes and standardizes
the mask/shift usage for all targets. For devices that support MCO2, this
supports only MCO1. No attempt has been made to extract MCO prescaler, which
is not available on all F1 and F3.
Rename rcc_ppre1_frequency and rcc_ppre2_frequency to rcc_apb1_frequency and rcc_apb2_frequency
Also add rcc_ahb_frequency (although it is not set correctly in all cases) which will be fixed by
the rcc commits later. Also fixup the only use in the library of these variables, the USART code.
And fix the typos that resulted
Make l1 generic too
to remove variations, redundancies, add missing, fix errors. All c files
refer only to the dispatch style headers in /include/stm32. Those headers
#include memorymap.h and cm3/common.h. All references to
these are removed from the family specific headers. Ethernet untouched as
it appears incomplete.
Added dummy spi.c for F0/F3. Fix some doxygen anomalies.
So that the navigation pane works correctly in browsers.
Some additional doc fixes put in where found (but many more still to go).
Added some dummy .c and .h files to bring the associated docs into line.
makefile changed to allow 'make html' as well as 'make doc' (the latter only does html anyway).
Added --terse and --mailback options to the make stylecheck target. It
also does continue even if it enounters a possible error.
We decided on two exceptions from the linux kernel coding standard:
- Empty wait while loops may end with ; on the same line.
- All blocks after while, if, for have to be in brackets even if they
only contain one statement. Otherwise it is easy to introduce an
error.
Checkpatch needs to be adapted to reflect those changes.
