Commit Graph

38 Commits

Author SHA1 Message Date
Dave Hylands 49d8e5ebaa stmhal: Fix a bug related to unhandled channel interrupts.
This also cleans up spurious interrupts which happen at timer
initilaization time.
2015-03-20 23:40:50 +00:00
Dave Hylands b4c9a25eab stmhal: Add support for quadrature encoder mode to pyb.TimerChannel. 2015-03-09 13:23:14 +00:00
Damien George d38939e676 stmhal: Reset state of timer when deinit is called. 2015-02-23 13:18:14 +00:00
Dave Hylands caf5c40c19 stmhal: Fix problem when passing callback= to timer init function.
In particular, make sure that the globals are all initialized
before enabling the interrupt, and also make sure that the timer
interrupt has been initialied before enabling the NVIC.
2015-02-22 19:58:51 -08:00
Damien George 418ec8bbba stmhal: Properly deinit timer object.
Addresses issue #1113.
2015-02-13 11:57:29 +00:00
Damien George 7a53ac8ec2 stmhal: Allow to build without float support if wanted. 2015-01-08 17:55:55 +00:00
Damien George 3b51b3e90f stmhal: Collect all root pointers together in 1 place.
A GC in stmhal port now only scans true root pointers, not entire BSS.
This reduces base GC time from 1700ms to 900ms.
2015-01-07 23:38:50 +00:00
Damien George 2cf6dfa280 stmhal: Prefix includes with py/; remove need for -I../py. 2015-01-01 21:06:20 +00:00
Paul Sokolovsky 46c3ab2004 modsys: Add sys.print_exception(exc, file=sys.stdout) function.
The function is modeled after traceback.print_exception(), but unbloated,
and put into existing module to save overhead on adding another module.
Compliant traceback.print_exception() is intended to be implemented in
micropython-lib in terms of sys.print_exception().

This change required refactoring mp_obj_print_exception() to take pfenv_t
interface arguments.

Addresses #751.
2014-12-08 20:25:49 +00:00
Dave Hylands 1c795445b3 Add support for complimentary channel output and deadtime.
This patch enables output on the complimentary channels (TIMx_CHyN).
For timers 1 and 8, deadtime can also be inserted when the channels
transition. For the pyboard, TIM8_CH1/CH1N and TIM8_CH2/CH2N can
take advantage of this.
2014-10-10 13:54:03 -07:00
Damien George d03c681608 stmhal: Use mp_uint_t where appropriate.
Found these by compiling stmhal with mp_uint_t of type uint32_t instead
of unsigned int.  This actually makes a difference to the code, but just
a curiosity.
2014-10-05 21:51:54 +01:00
Damien George ba0383a8c7 stmhal, timer: Fix timer.chanel so mode can be a keyword. 2014-10-05 17:52:45 +01:00
Damien George 55f68b3ce8 stmhal, timer: Improve accuracy of freq computation. 2014-10-05 17:52:45 +01:00
Damien George 97ef94df83 stmhal, timer: Set freq from float; get timer source freq.
Timers now have the following new features:
- can init freq using floating point; eg tim.init(freq=0.1)
- tim.source_freq() added to get freq of timer clock source
- tim.freq() added to get/set freq
- print(tim) now prints freq
2014-10-05 17:52:44 +01:00
Damien George 24119176e7 stmhal: Allow pyb.freq() function to change SYSCLK frequency.
Eg pyb.freq(120000000) sets the CPU to 120MHz.  The frequency can be set
at any point in the code, and can be changed as many times as you like.
Note that any active timers will need to be reconfigured after a freq
change.

Valid range is 24MHz to 168MHz (but not all freqs are supported).  The
code maintains a 48MHz clock for the USB at all times and it's possible
to change the frequency at a USB REPL and keep the REPL alive (well,
most of the time it stays, sometimes it resets the USB for some reason).
Note that USB does not work with pyb.freq of 24MHz.
2014-10-04 01:54:31 +01:00
Damien George f042d7a4d7 stmhal: Fix edge case for timer PWM of 100%.
Also improve precision of calculating PWM percent in integer mode.
Also update teensy with edge case fix.
2014-09-29 14:15:01 +01:00
Dave Hylands 39296b40d4 Fix timer overflow code.
Teensy doesn't need to worry about overflows since all of
its timers are only 16-bit.

For PWM, the pulse width needs to be able to vary from 0..period+1
(pulse-width == period+1 corresponds to 100% PWM)

I couldn't test the 0xffffffff cases since we can't currently get a
period that big in python. With a prescaler of 0, that corresponds
to a freq of 0.039 (i.e. cycle every 25.56 seconds), and we can't
set that using freq or period.

I also tested both stmhal and teensy with floats disabled, which
required a few other code changes to compile.
2014-09-27 19:40:37 -07:00
Damien George e8ea0724da stmhal, timer: Factor code to compute PWM percent; improve 32bit case.
Also do the same for teensy timer code.
2014-09-25 15:44:10 +01:00
Dave Hylands 53d5fa641f Add pulse_width_percent to teensy.
Fix stmhal and teensy print routines to report actual prescaler an period.
Fix teensy build to use soft-float
Add USE_ARDUINO_TOOLCHAIN option to teensy build
2014-09-23 23:19:36 -07:00
Damien George 0e58c5810d stmhal: Add pulse_width_ratio to timer channel object.
This allows to set the pulse width (for PWM mode) as a ratio relative to
the period of the timer.  Eg, 0.5 is a 50% duty cycle.  You can set the
ratio in the channel init, or using channel.pulse_width_ratio; the
latter can also read the pulse width as a ratio.
2014-09-21 22:54:02 +01:00
Dave Hylands becbc87fd7 Add Timer support (PWM, OC, IC) for stmhal and teensy 2014-09-19 09:26:13 -07:00
Damien George ecc88e949c Change some parts of the core API to use mp_uint_t instead of uint/int.
Addressing issue #50, still some way to go yet.
2014-08-30 00:35:11 +01:00
Damien George bf133f7737 stmhal: Resolve question in comment about timer clock. 2014-08-14 00:30:14 +01:00
Damien George 40f3c02682 Rename machine_(u)int_t to mp_(u)int_t.
See discussion in issue #50.
2014-07-03 13:25:24 +01:00
Damien George e70b5dbe58 stmhal: Some reordering of code/functions. 2014-07-02 14:09:44 +01:00
Dave Hylands 0d81c133b3 Add timer_deinit and call it just before doing a soft-restart
This fixes #733.
2014-06-30 08:07:38 -07:00
Emmanuel Blot f6932d6506 Prefix ARRAY_SIZE with micropython prefix MP_ 2014-06-19 18:54:34 +02:00
Damien George 04b9147e15 Add license header to (almost) all files.
Blanket wide to all .c and .h files.  Some files originating from ST are
difficult to deal with (license wise) so it was left out of those.

Also merged modpyb.h, modos.h, modstm.h and modtime.h in stmhal/.
2014-05-03 23:27:38 +01:00
Damien George 5874c1c92b stmhal: Remove #include <stdint.h> from mpconfigport.h.
Make include dependencies neater, and adheres to the coding convention
that headers should not include headers.
2014-05-03 13:24:21 +01:00
Damien George 3eb8163b16 stmhal: Add documentation for DAC and Timer classes. 2014-05-02 16:58:15 +01:00
Damien George dbc81df5d4 Simplify names for argcheck.c / arg parsing. 2014-04-26 11:19:17 +01:00
Damien George 6d3c5e4301 Add ARRAY_SIZE macro, and use it where possible. 2014-04-26 10:47:29 +01:00
Damien George 6691c9e655 stmhal, timer: Remove obsolete global variable. 2014-04-21 18:19:50 +01:00
Damien George 7fdfa93700 stmhal: Add Timer class: simple TIM control, incl callback on IRQ.
Simple but functional timer control.  More sophistication will
eventually be added, or for now just use direct register access :)

Also added pyb.freq() function to get MCU clock frequencies.
2014-04-21 16:48:16 +01:00
Damien George 6d983539bc stmhal: Improve flash storage cache management.
Internal flash used for the filesystem is now written (from the cache)
only after a 5s delay, or when a file is closed, or when the drive is
unmounted from the host.  This delay means that multiple writes can
accumulate in the cache, and leads to less writes to the flash, making
it last longer.

It's implemented by a high-priority interrupt that takes care of flash
erase and write, and flushing the cache.

This is still only an interim solution for the flash filesystem.  It
eventually needs to be replaced with something that uses less RAM for
the cache, something that can use more of the flash, and something that
does proper wear levelling.
2014-04-16 23:08:36 +01:00
Damien George 4d7f4eb6a9 stmhal: Add ADC function to read data at a given frequency.
Reads ADC values into a bytearray (or similar) at a fixed rate.  Needs a
better name and improved API.  Also fix up DAC dma function (which also
needs a better name and API).
2014-04-15 19:52:56 +01:00
Damien George ea13f407a3 py: Change nlr_jump to nlr_raise, to aid in debugging.
This does not affect code size or performance when debugging turned off.

To address issue #420.
2014-04-05 18:32:08 +01:00
Damien George a12be917a4 stmhal: Add timer module; move servo PWM from TIM2 to TIM5.
As per issue #257, servo is better on TIM5 because TIM2 is connected to
more GPIO.
2014-04-02 15:09:36 +01:00