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The addition of STM32_HAVE_TIMER() allows us to avoid some
repetition. There's still an issue with names on F1 preventing us from
moving the IRQ handlers to libmaple/timer.c, but once that's resolved,
we'll be able to remove even more.
Signed-off-by: Marti Bolivar <mbolivar@leaflabs.com>
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This is a convenience function for deciding whether a timer supports a
particular capture/compare channel. It's necessary because of those
nuisance "general purpose" timers that only have a subset of the
channels.
Signed-off-by: Marti Bolivar <mbolivar@leaflabs.com>
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This applies to XL-density STM32F1 devices.
In stm32f1/timer.c, add timer_dev's for the new timers, using the
timer_private API. These definitions are conditionally compiled based
on the target density to avoid wasting space on smaller MCUs. Also add
calls to the appropriate timer_private.h dispatch routines within the
IRQ handlers for these timers. We need to change the IRQ handler names
to reflect this eventually, but put that off for now, as it could
break backwards compatibility in some exotic situations where the user
refers to the libmaple IRQ handlers directly.
In stm32f1/timer.h, add register map base pointers and device
declarations for the new timers. timer_dev* declarations are compiled
in only when the target MCU supports them, in keeping with the above
stm32f1/timer.c changes.
In libmaple/timer.c, update the (static) IRQ enable routines to
account for the additional timers. This adds some code that's
unnecessary on smaller STM32F1s, but it's minimal (40 extra bytes on
my machine), so portability and readability win out.
Size change, using GCC version "(Sourcery G++ Lite 2011.03-42) 4.5.2":
Before:
text data bss dec hex filename
615 0 0 615 267 build/home/mbolivar/leaf/libmaple/libmaple/timer.o
After:
text data bss dec hex filename
655 0 0 655 28f build/home/mbolivar/leaf/libmaple/libmaple/timer.o
Signed-off-by: Marti Bolivar <mbolivar@leaflabs.com>
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Fix copy-paste errors in, and add missing, register bit
definitions. For copy-paste errors that would result in source
incompatibilities with past releases, add some legacy defines.
Add series header and C file for STM32F1 which fills in the missing
API. Much of the F1 timer.c would be repeated on F2, so also add
timer_private.h to hold these.
Support for timers 9 through 14 is still missing.
Signed-off-by: Marti Bolivar <mbolivar@leaflabs.com>
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Move libmaple/*.h to (new) libmaple/include/libmaple/. The new
accepted way to include a libmaple header foo.h is with:
#include <libmaple/foo.h>
This is more polite in terms of the include namespace. It also allows
us to e.g. implement the Arduino SPI library at all (which has header
SPI.h; providing it was previously impossible on case-insensitive
filesystems due to libmaple's spi.h).
Similarly for Wirish.
The old include style (#include "header.h") is now deprecated.
libmaple/*.h:
- Change include guard #defines from _FOO_H_ to _LIBMAPLE_FOO_H_.
- Add license headers where they're missing
- Add conditional extern "C" { ... } blocks where they're missing
(they aren't always necessary, but we might was well do it against
the future, while we're at it.).
- Change includes from #include "foo.h" to #include <libmaple/foo.h>.
- Move includes after extern "C".
- Remove extra trailing newlines
Note that this doesn't include the headers under libmaple/usb/ or
libmaple/usb/usb_lib. These will get fixed later.
libmaple/*.c:
- Change includes from #include "foo.h" to #include <libmaple/foo.h>.
Makefile:
- Add I$(LIBMAPLE_PATH)/include/libmaple to GLOBAL_FLAGS. This allows
for users (including Wirish) to migrate their code, but should go
away ASAP, since it slows down compilation.
Wirish:
- Move wirish/**/*.h to (new) wirish/include/wirish/. This ignores
the USB headers, which, as usual, are getting handled after
everything else.
- Similarly generify wirish/boards/ structure. For each supported
board "foo", move wirish/boards/foo.h and wirish/boards/foo.cpp to
wirish/boards/foo/include/board/board.h and
wirish/boards/foo/board.cpp, respectively. Also remove the #ifdef
hacks around the .cpp files.
- wirish/rules.mk: put wirish/boards/foo/include in the include path
(and add wirish/boards/foo/board.cpp to the list of sources to be
compiled). This allows saying:
#include <board/board.h>
instead of the hack currently in place. We can allow the user to
override this setting later to make adding custom board definitions
easier.
- Disable -Werror in libmaple/rules.mk, as the current USB warnings
don't let the olimex_stm32_h103 board compile. We can re-enable
-Werror once we've moved the board-specific bits out of libmaple
proper.
libraries, examples:
- Update includes accordingly.
- Miscellaneous cosmetic fixups.
Signed-off-by: Marti Bolivar <mbolivar@leaflabs.com>
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Read TIMx_SR before grabbing a pointer to the user handlers instead of
after. This should shave a couple of cycles off of the time between
IRQ entry and SR read.
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Remove dispatch_irq() and dispatch_cc_irqs().
For IRQs which handle exactly one timer interrupt, add new
dispatch_single_irq(). The mere fact that the IRQ has been called
suffices to prove that its interrupt enable bit (in TIMx_DIER) and
interrupt flag (in TIMx_SR) are set. These facts are combined in
dispatch_single_irq(), which only needs to check if the timer_dev
handler is non-null before calling it and clearing the SR flag.
For IRQs which serve multiple timer interrupts, replace the
composition of calls to dispatch_irq() and dispatch_cc_irqs() with
individualized routines. These eliminate unnecessary timer register
reads/writes, and, in the case of capture/compare interrupts, have a
loop unrolling performed.
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Modify them to check whether the relevant interrupts are enabled
before attempting to handle them.
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Various names in timer.h were too unwieldy. Making these slightly
more bearable.
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From declaration to definition, to keep with convention.
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Added an adc_dev to struct stm32_pin_info. This was necessary to add
support for the channels on the Native which are only connected to
ADC3, but it does add a bunch of NULLs to the PIN_MAPs.
I don't think any other peripherals need representation on a per-pin
basis. Each peripheral library will be responsible for keeping track
of related GPIO ports and bits, and we can throw #defines in to
boards/*.h for other things (e.g. BOARD_SPI1_MISO_PIN).
Fleshed out the ADC refactor and brought it more in keeping with the
new design as it evolves.
A couple of other tweaks. Notably: waitForButtonPress() now takes a
default argument meaning "wait forever".
Removed Maple-specific documentation from core functions in io.h; this
information will need to go into the individual board docs files.
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Basic PWM works. Had some problems in testing that might be due to
USART bugs.
HardwareTimer has been removed from the build for now; I will
re-implement it in terms of the new libmaple API, but consider it
deprecated. Let's come up with something better.
Servo is implemented in terms of HardwareTimer, so it also has been
temporarily removed from the build.
pwmWrite() likely got a little bit less inefficient due to
indirection, but the PIN_MAPs shrank by a pointer per PinMapping.
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