Commit Graph

26 Commits

Author SHA1 Message Date
Damien George 89738e8240 stmhal: Rename sys_tick ticks/delay functions to corresp. mp_hal ones.
The renames are:
HAL_Delay -> mp_hal_delay_ms
sys_tick_udelay -> mp_hal_delay_us
sys_tick_get_microseconds -> mp_hal_ticks_us

And mp_hal_ticks_ms is added to provide the full set of timing functions.

Also, a separate HAL_Delay function is added which differs slightly from
mp_hal_delay_ms and is intended for use only by the ST HAL functions.
2017-03-02 15:32:32 +11:00
Damien George 05a4859585 stmhal: Implement a proper thread scheduler.
This patch changes the threading implementation from simple round-robin
with busy waits on mutexs, to proper scheduling whereby threads that are
waiting on a mutex are only scheduled when the mutex becomes available.
2017-02-15 13:28:48 +11:00
Damien George 27c149efe0 stmhal: Add pyb.fault_debug() function, to control hard-fault behaviour.
This new function controls what happens on a hard-fault:
- debugging disabled: board will do a reset
- debugging enabled: board will print registers and stack and flash LEDs

The default is disabled, ie to do a reset.  This is different to previous
behaviour which flashed the LEDs and waited indefinitely.
2017-02-06 13:22:17 +11:00
Damien George bffda45154 stmhal: On HardFault, print stack pointer and do a stack dump. 2017-02-06 13:22:17 +11:00
Damien George 8e00844929 stmhal: Fix build issue when MICROPY_PY_THREAD is disabled. 2017-01-31 19:52:50 +11:00
Damien George 882ec01e42 stmhal: Initial implementation of multithreading, currently disabled.
This patch brings the _thread module to stmhal/pyboard.  There is a very
simple round-robin thread scheduler, which is disabled if there is only
one thread (for efficiency when threading is not used).

The scheduler currently switches threads at a rate of 250Hz using the
systick timer and the pend-SV interrupt.

The GIL is disabled so one must be careful to use lock objects to prevent
concurrent access of objects.

The threading is disabled by default, one can enabled it with the config
option MICROPY_PY_THREAD to test it out.
2017-01-31 18:42:35 +11:00
Damien George aaab6a9921 stmhal/uart: Add support for UART7 and UART8 on F7 MCUs. 2016-12-05 15:14:22 +11:00
Krzysztof Blazewicz 8fa0733647 stmhal/i2c: provide custom IRQ handlers
Use custom handlers providing minimal required functionality
because those provided by ST increase code size by almost 2 KiB.
2016-11-16 12:43:27 +01:00
Krzysztof Blazewicz 0280b2c1b1 stmhal/i2c: handle I2C IRQs
This is required by HAL Driver for error handling since v1.5.0
2016-11-16 12:43:27 +01:00
Dave Hylands c6983e3ce0 stmhal: Fix timer capture/compare interrupt handling for TIM1 and TIM8.
It turns out that TIM1 and TIM8 have their own Capture/Compare
interrupt vector. For all of the other timers, the capture/compare
interrupt vector is the same as the update vector.

So we need to add handlers for these vectors and enable them
when using capture/compare callbacks.

During testing of this, I also found that passing a channel callback
into the channel constructor would not enable interrupts properly.

I tested using:
```
>>> pyb.Timer(1, freq=4).channel(1, pyb.Timer.OC_TOGGLE, callback=lambda t: print('.', end=''))
```
I tested the above with channels 1, 4, and 8
2016-08-22 12:18:04 +10:00
Tobias Badertscher adaaf439b0 stmhal: L4: Adapt startup code, clock configuration and interrupts. 2016-05-05 15:14:42 +01:00
Damien George ea89b80ff4 stmhal: Make TIM3 available for use by the user.
TIM3 is no longer used by USB CDC for triggering outgoing data, so we
can now make it available to the user.

PWM fading on LED(4) is now gone, but will be reinstated in a new way.
2016-01-29 22:31:56 +00:00
Damien George d363133917 stmhal: Make USB CDC driver use SOF instead of TIM3 for outgoing data.
Previous to this patch the USB CDC driver used TIM3 to trigger the
sending of outgoing data over USB serial.  This patch changes the
behaviour so that the USB SOF interrupt is used to trigger the processing
of the sending.  This reduces latency and increases bandwidth of outgoing
data.

Thanks to Martin Fischer, aka @hoihu, for the idea and initial prototype.

See PR #1713.
2016-01-29 15:21:43 +00:00
Damien George 401af50dc0 stmhal: Add pyb.irq_stats() to get statistics about IRQ calls.
Adds a lot of code, makes IRQs a bit less efficient, but is very useful
for debugging.  Usage: pyb.irq_stats() returns a memory view that can be
read and written, eg:

    list(pyb.irq_stats())
    pyb.irq_stats()[0]
    pyb.irq_stats()[0] = 0

The patch provides general IRQ_ENTER() and IRQ_EXIT() macros that can be
modified to provide further IRQ statistics if desired.
2015-12-22 21:00:20 +00:00
neilh10 1be0fde45c stmhal: Enable two USB phys to be supported together.
This is refactoring to enable support for the two USB PHYs available on
some STM32F4 processors to be used at the same time. The F405/7 & F429
have two USB PHYs, others such as the F411 only have one PHY.

This has been tested separately on a pyb10 (USB_FS PHY) and F429DISC
(USB_HS PHY) to be able to invoke a REPL/USB.  I have modified a PYBV10
to support two PHYs.

The long term objective is to support a 2nd USB PHY to be brought up as a
USB HOST, and possibly a single USB PHY to be OTG.
2015-12-09 09:56:36 +00:00
Damien George 66b96822fb stmhal: Add option to free up TIM3 from USB VCP polling.
This is a hack to free up TIM3 so that it can be used by the user.
Instead we use the PVD irq to call the USB VCP polling function, and
trigger it from SysTick (so SysTick itself does not do any processing).

The feature is enabled for pyboard lite only, since it lacks timers.
2015-12-04 14:07:15 +00:00
Dave Hylands 061eb6fa6b stmahl: Fix usbd_conf.c for devices which don't have USB_HS at all.
The STMCube examples define both USE_USB_HS and USE_USB_HS_IN_FS when they
use the HS in FS mode.

The STM32F401 doesn't have a USB_HS at all, so the USB_OTG_HS instance
doesn't even exist.
2015-11-26 16:17:26 +00:00
Tobias Badertscher 8844d031e4 stmhal: Add support for the STM32F429I-DISCO kit by STMicro. 2015-11-25 23:53:26 +00:00
Damien George 36bd10779c stmhal: In SysTick IRQ handler, make uwTick variable non-volatile.
uwTick can only change in the SysTick IRQ so this IRQ function does not
need to take special care with this variable.  It's important to make
this IRQ function as efficient as possible.
2015-11-24 16:23:54 +00:00
Damien George e99e6c883d stmhal: Move flash storage idle tick handler from TIM3 to SysTick.
Using SysTick to do the counting and dispatch of the flash storage idle
handler is more efficient than requiring a dedicated hardware timer.
No new counter is needed, just the existing uwTick variable.  The
processing is not actually done in the SysTick IRQ, it is deferred to
the flash IRQ (which runs at lower priority).
2015-11-24 16:18:07 +00:00
Damien George 22bd23114a stmhal: On SysTick IRQ, only process one DMA channel at a time.
This can be generalised if/when more processing is needed by SysTick.

Thanks to @chuckbook for the idea.
2015-11-24 15:44:16 +00:00
Dave Hylands b677f03407 stmhal: Turn off DMA clocks when idle for 100 msec
Turning on each DMA block increases the current consumption
by about 8 mA. This code adds an idle timer for each DMA
block and turns off the clocks when no streams are in use
for 128 msec. Having a small timeout allows for improved
performance when back-to-back transfers are being performed.

The 128 msec is basically a guess.
2015-11-24 09:37:25 +00:00
Dave Hylands 41b688e25f stmhal: Print more information at HardFault time. 2015-11-07 13:59:00 +00:00
Damien George 731f359292 all: Add py/mphal.h and use it in all ports.
py/mphal.h contains declarations for generic mp_hal_XXX functions, such
as stdio and delay/ticks, which ports should provide definitions for.  A
port will also provide mphalport.h with further HAL declarations.
2015-10-31 19:14:30 +03:00
Damien George 6e552e15fa stmhal: Add debug capability to print out info about a hard fault.
Capability is #if'd off by default.

Thanks to Dave Hylands for the patch.
2015-08-03 00:14:51 +01:00
Dave Hylands 7e7fb0b7a3 stmhal: Renamed startup/system/_it.[ch] file to generic names. 2015-07-30 00:38:29 +01:00