Commit Graph

16 Commits

Author SHA1 Message Date
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