Commit Graph

109 Commits

Author SHA1 Message Date
Jim Mussared d72dbb822c stm32: Provide port-specific implementation for Nimble on STM32. 2019-10-01 09:51:02 +10:00
Damien George 3328b7d71f stm32: Support disabling the compiler.
Disable via "#define MICROPY_ENABLE_COMPILER (0)" in the board's
mpconfigboard.h file.
2019-09-26 17:05:40 +10:00
Damien George d06fd384c2 stm32/can: Factor CAN driver into low-level and Python bindings.
can.c now contains the low-level C interface to the CAN peripheral, and
pyb_can.c the Python-level class/methods/constants.
2019-09-23 16:58:08 +10:00
Damien George f302f784e9 stm32/usb: Add config options to disable USB MSC and/or HID.
The new configurations MICROPY_HW_USB_MSC and MICROPY_HW_USB_HID can be
used by a board to enabled or disable MSC and/or HID.  They are both
enabled by default.
2019-07-16 14:39:21 +10:00
Damien George 5fd62c8992 stm32: Remove SystemInit funcs, use stm32lib versions instead.
stm32lib now provides system_stm32XXxx.c source files for all MCU variants,
which includes SystemInit and prescaler tables.  Since these are quite
standard and don't need to be changed, switch to use them instead of custom
variants, making the start-up code cleaner.

The SystemInit code in stm32lib was checked and is equivalent to what is
removed from the stm32 port in this commit.
2019-07-08 15:23:53 +10:00
Damien George 21ecf8be5f stm32/powerctrl: Move L0's SystemClock_Config to powerctrlboot.c file. 2019-07-08 15:23:53 +10:00
Damien George 46b3cc4572 stm32/usb: Add support to auto-detect USB interface, either FS or HS.
If both FS and HS USB peripherals are enabled for a board then the active
one used for the REPL will now be auto-detected, by checking to see if both
the DP and DM lines are actively pulled low.  By default the code falls
back to use MICROPY_HW_USB_MAIN_DEV if nothing can be detected.
2019-07-03 11:51:13 +10:00
Damien George 8dcf25e1bd stm32/mpu: Add helper functions for configuring MPU. 2019-07-03 01:27:33 +10:00
Damien George 04c7cdb668 stm32: Enter bootloader via a system reset.
Entering a bootloader (ST system bootloader, or custom mboot) from software
by directly branching to it is not reliable, and the reliability of it
working can depend on the peripherals that were enabled by the application
code.  It's also not possible to branch to a bootloader if the WDT is
enabled (unless the bootloader has specific provisions to feed the WDT).

This patch changes the way a bootloader is entered from software by first
doing a complete system reset, then branching to the desired bootloader
early on in the start-up process.  The top two words of RAM (of the stack)
are reserved to store flags indicating that the bootloader should be
entered after a reset.
2019-06-25 14:15:49 +10:00
Chris Mason 14cf91f704 stm32: In link script, define start of stack separately from heap end.
Previously the end of the heap was the start (lowest address) of the stack.
With the changes in this commit these addresses are now independent,
allowing a board to place the heap and stack in separate locations.
2019-06-14 15:29:24 +10:00
Damien George 53200247b7 stm32/usb: Add "msc" kw-arg to pyb.usb_mode to select MSC logical units.
With this the user can select multiple logical units to expose over USB MSC
at once, eg: pyb.usb_mode('VCP+MSC', msc=(pyb.Flash(), pyb.SDCard())).  The
default behaviour is the original behaviour of just one unit at a time.
2019-06-11 16:22:09 +10:00
Damien George 9e4b3681fd stm32: Support optional lwIP mDNS responder. 2019-06-05 16:14:09 +10:00
Damien George 8b7409c295 stm32: Integrate in the cyw43 driver and network.WLAN class.
Enable it by setting MICROPY_PY_NETWORK_CYW43=1 at the Makefile level.
2019-06-03 17:14:34 +10:00
Damien George 0c29502ad9 stm32/usb: Refactor CDC VCP code to enable N CDC interfaces.
The board config option MICROPY_HW_USB_ENABLE_CDC2 is now changed to
MICROPY_HW_USB_CDC_NUM, and the latter should be defined to the maximum
number of CDC interfaces to support (defaults to 1).
2019-05-30 21:11:04 +10:00
Damien George 97753a1bbc stm32: Move factory reset files and code to separate source file.
The new function factory_reset_make_files() populates the given filesystem
with the default factory files.  It is defined with weak linkage so it can
be overridden by a board.

This commit also brings some minor user-facing changes:

- boot.py is now no longer created unconditionally if it doesn't exist, it
  is now only created when the filesystem is formatted and the other files
  are populated (so, before, if the user deleted boot.py it would be
  recreated at next boot; now it won't be).

- pybcdc.inf and README.txt are only created if the board has USB, because
  they only really make sense if the filesystem is exposed via USB.
2019-05-07 13:59:51 +10:00
Damien George cbeac903e8 stm32/main: Increase default UART REPL rx buffer from 64 to 260 bytes.
This allows the UART to buffer at least 256 bytes (taking into account the
extra byte needed by the ring buffer, and word alignment).
2019-05-01 14:53:21 +10:00
Damien George 0646e607b5 ports: Convert to use pyexec_file_if_exists() to execute boot/main.py.
The stm32 and nrf ports already had the behaviour that they would first
check if the script exists before executing it, and this patch makes all
other ports work the same way.  This helps when developing apps because
it's hard to tell (when unconditionally trying to execute the scripts) if
the resulting OSError at boot up comes from missing boot.py or main.py, or
from some other error.  And it's not really an error if these scripts don't
exist.
2019-04-26 15:22:14 +10:00
Damien George aa7b32c811 stm32/dac: Rework DAC driver to use direct register access.
This patch makes the DAC driver simpler and removes the need for the ST
HAL.  As part of it, new helper functions are added to the DMA driver,
which also use direct register access instead of the ST HAL.

Main changes to the DAC interface are:

- The DAC uPy object is no longer allocated dynamically on the heap,
  rather it's statically allocated and the same object is retrieved for
  subsequent uses of pyb.DAC(<id>).  This allows to access the DAC objects
  without resetting the DAC peripheral.  It also means that the DAC is only
  reset if explicitly passed initialisation parameters, like "bits" or
  "buffering".

- The DAC.noise() and DAC.triangle() methods now output a signal which is
  full scale (previously it was a fraction of the full output voltage).

- The DAC.write_timed() method is fixed so that it continues in the
  background when another peripheral (eg SPI) uses the DMA (previously the
  DAC would stop if another peripheral finished with the DMA and shut the
  DMA peripheral off completely).

Based on the above, the following backwards incompatibilities are
introduced:

- pyb.DAC(id) will now only reset the DAC the first time it is called,
  whereas previously each call to create a DAC object would reset the DAC.
  To get the old behaviour pass the bits parameter like: pyb.DAC(id, bits).

- DAC.noise() and DAC.triangle() are now full scale.  To get previous
  behaviour (to change the amplitude and offset) write to the DAC_CR (MAMP
  bits) and DAC_DHR12Rx registers manually.
2019-04-24 15:51:19 +10:00
Damien George 9670b26526 stm32: Rename MICROPY_HW_HAS_SDCARD to MICROPY_HW_ENABLE_SDCARD.
For consistency with the majority of other MICROPY_HW_ENABLE_xxx macros.
2019-04-01 15:21:26 +11:00
Andrew Leech 9d6f70f715 stm32: Make default USB_VCP stream go through uos.dupterm for main REPL.
Use uos.dupterm for REPL configuration of the main USB_VCP(0) stream on
dupterm slot 1, if USB is enabled.  This means dupterm can also be used to
disable the boot REPL port if desired, via uos.dupterm(None, 1).

For efficiency this adds a simple hook to the global uos.dupterm code to
work with streams that are known to be native streams.
2019-04-01 13:04:05 +11:00
Damien George b5f33ac2cb ports: Update to work with new oofatfs version. 2019-03-05 15:56:39 +11:00
Damien George 78fe979d7d stm32: Use global lwip build config and support building without lwip. 2019-03-04 23:33:02 +11:00
Mike Causer 812969d615 all: Change PYB message prefix to MPY.
Replaces "PYB: soft reboot" with "MPY: soft reboot", etc.

Having a consistent prefix across ports reduces the difference between
ports, which is a general goal.  And this change won't break pyboard.py
because that tool only looks for "soft reboot".
2019-02-12 15:18:33 +11:00
Damien George 6e30f96b0b ports: Convert legacy uppercase macro names to lowercase. 2019-02-12 14:54:51 +11:00
Damien George 800871c0cb stm32/modnetwork: Change lwIP polling to be based on background systick. 2019-02-08 16:38:09 +11:00
Damien George 5fbda53d3c stm32/systick: Rename sys_tick_XXX functions to systick_XXX. 2019-02-08 01:20:09 +11:00
Damien George 38022ddb2c stm32/main: Make board-defined UART REPL use a static object and buffer.
This way the UART REPL does not need the MicroPython heap and exists
outside the MicroPython runtime, allowing characters to still be received
during a soft reset.
2019-01-28 22:56:55 +11:00
Damien George 3431ea7205 stm32/main: Make thread and FS state static and exclude when not needed.
Without the static qualifier these objects will be kept by the linker even
if they are unused.  So this patch saves some RAM when these features are
unused by a board.
2019-01-11 01:52:17 +11:00
Andrew Leech ce0c581179 stm32/main: Add board config option to enable/disable mounting SD card.
The new option MICROPY_HW_SDCARD_MOUNT_AT_BOOT can now be defined to 0 in
mpconfigboard.h to allow SD hardware to be enabled but not auto-mounted at
boot.  This feature is enabled by default to retain previous behaviour.

Previously, if an SD card is enabled in hardware it is also used to boot
from.  While this can be disabled with a SKIPSD file on internal flash,
this wont be available at first boot or if the internal flash gets
corrupted.
2018-12-22 01:30:47 +11:00
Damien George dc23978dde stm32/uart: Add ability to have a static built-in UART object.
A static UART is useful for internal peripherals that require a UART and
need to persist outside the soft-reset loop.
2018-12-10 16:21:50 +11:00
Damien George a2271532be stm32: Split out UART Python bindings from uart.c to machine_uart.c. 2018-12-10 16:21:50 +11:00
boochow 9d3372bded stm32: Add peripheral support for STM32L432.
The L432 does not have: GPIOD, TIM3, SPI2, ADC dual mode operation, 2-banks
flash.
2018-12-06 13:32:43 +11:00
Andrew Leech 338635ccc6 stm32/main: Add configuration macros for board to set heap start/end.
The macros are MICROPY_HEAP_START and MICROPY_HEAP_END, and if not defined
by a board then the default values will be used (maximum heap from SRAM as
defined by linker symbols).

As part of this commit the SDRAM initialisation is moved to much earlier in
main() to potentially make it available to other peripherals and avoid
re-initialisation on soft-reboot.  On boards with SDRAM enabled the heap
has been set to use that.
2018-10-05 17:30:18 +10:00
Andrew Leech a1db1506a2 stm32/sdram: Integrate SDRAM driver into rest of code.
If SDRAM is configured and enabled for a board then it is used for the
MicroPython GC heap.
2018-07-23 23:14:23 +10:00
Damien George e1ae9939ac stm32: Support compiling with object representation D.
With this and previous patches the stm32 port can now be compiled using
object representation D (nan boxing).  Note that native code and frozen mpy
files with float constants are currently not supported with this object
representation.
2018-07-08 23:25:11 +10:00
Damien George b2fa1b50ed ports: Call gc_sweep_all() when doing a soft reset.
This calls finalisers of things like files and sockets to cleanly close
them.
2018-06-12 11:56:25 +10:00
Damien George 070937fe93 stm32: Add support for Cortex-M0 CPUs. 2018-05-28 21:46:20 +10:00
Damien George f497723802 stm32: Allow to have no storage support if there are no block devices.
If no block devices are defined by a board then storage support will be
disabled.  This means there is no filesystem provided by either the
internal flash or external SPI flash.  But the VFS system can still be
enabled and filesystems provided on external devices like an SD card.
2018-05-28 21:45:46 +10:00
Damien George e773a2cdba stm32/main: Use consistent indenting of macro #if's. 2018-05-22 13:17:03 +10:00
Damien George cda964198a stm32: Integrate lwIP as implementation of usocket module.
This patch allows to use lwIP as the implementation of the usocket module,
instead of the existing socket-multiplexer that delegates the entire TCP/IP
layer to the NIC itself.

This is disabled by default, and enabled by defining MICROPY_PY_LWIP to 1.

When enabled, the lwIP TCP/IP stack will be included in the build with
default settings for memory usage and performance (see
lwip_inc/lwipopts.h).  It is then up to a particular NIC to register itself
with lwIP using the standard lwIP netif API.
2018-05-21 17:36:06 +10:00
Damien George 88c26a48b4 stm32/pyb_i2c: Put pyb.I2C under MICROPY_PY_PYB_LEGACY setting.
When disabled, the pyb.I2C class saves around 8k of code space and 172
bytes of RAM.  The same functionality is now available in machine.I2C
(for F4 and F7 MCUs).

It is still enabled by default.
2018-05-14 13:53:46 +10:00
Damien George 051686b0a8 stm32/main: Clean up and optimise initial start-up code of the MCU. 2018-05-02 15:20:24 +10:00
Damien George a60efa8202 stm32/uart: Allow ctrl-C to work with UARTs put on REPL via os.dupterm. 2018-04-23 20:44:30 +10:00
Damien George 3d5d76fb73 stm32/main: Allow a board to configure the label of the flash FS.
To change the default label a board should define:

    #define MICROPY_HW_FLASH_FS_LABEL "label"
2018-04-11 16:52:22 +10:00
Peter D. Gray 59dda71038 stm32/main: Guard usb_mode lines in default boot.py by relevant #if. 2018-04-10 23:52:51 +10:00
Damien George b833f170c3 stm32/main: Only update reset_mode if board doesn't use a bootloader.
If the board is configured to use a bootloader then that bootloader will
pass through the reset_mode.
2018-03-29 16:16:58 +11:00
Damien George 7856a416bd stm32/main: Rename main to stm32_main and pass through first argument.
The main() function has a predefined type in C which is not so useful for
embedded contexts.  This patch renames main() to stm32_main() so we can
define our own type signature for this function.  The type signature is
defined to have a single argument which is the "reset_mode" and is passed
through as r0 from Reset_Handler.  This allows, for example, a bootloader
to pass through information into the main application.
2018-03-29 16:15:57 +11:00
Damien George e37b8ba5a5 stm32: Use STM32xx macros instead of MCU_SERIES_xx to select MCU type.
The CMSIS files for the STM32 range provide macros to distinguish between
the different MCU series: STM32F4, STM32F7, STM32H7, STM32L4, etc.  Prefer
to use these instead of custom ones.
2018-03-17 10:42:50 +11:00
iabdalkader bbf19bb64e stm32/main: Enable D2 SRAM1/2/3 clocks on H7 MCUs. 2018-03-09 15:12:58 +11:00
Damien George 5c320bd0b0 stm32: Introduce MICROPY_HW_ENABLE_USB and clean up USB config.
This patch allows to completely compile-out support for USB, and no-USB is
now the default.  If a board wants to enable USB it should define:

    #define MICROPY_HW_ENABLE_USB (1)

And then one or more of the following to select the USB PHY:

    #define MICROPY_HW_USB_FS (1)
    #define MICROPY_HW_USB_HS (1)
    #define MICROPY_HW_USB_HS_IN_FS (1)
2018-02-13 18:51:08 +11:00
Damien George 3eb0694b97 stm32: Update HAL macro and constant names to use newer versions.
Newer versions of the HAL use names which are cleaner and more
self-consistent amongst the HAL itself.  This patch switches to use those
names in most places so it is easier to update the HAL in the future.
2018-02-13 15:37:35 +11:00
Damien George cc92c0572e stm32/main: Remove need for first_soft_reset variable. 2018-02-05 16:13:05 +11:00
Damien George 4607be3768 stm32/main: Reorder some init calls to put them before soft-reset loop.
The calls to rtc_init_start(), sdcard_init() and storage_init() are all
guarded by a check for first_soft_reset, so it's simpler to just put them
all before the soft-reset loop, without the check.

The call to machine_init() can also go before the soft-reset loop because
it is only needed to check the reset cause which can happen once at the
first boot.  To allow this to work, the reset cause must be set to SOFT
upon a soft-reset, which is the role of the new function machine_deinit().
2018-02-05 15:52:36 +11:00
Damien George 4b8e58756b stm32/i2c: Allow I2C peripheral state to persist across a soft reset.
The I2C sub-system is independent from the uPy state (eg the heap) and so
can safely persist across a soft reset.
2018-02-02 19:04:36 +11:00
Damien George 5ddd1488bd stm32/spi: Allow SPI peripheral state to persist across a soft reset.
The SPI sub-system is independent from the uPy state (eg the heap) and so
can safely persist across a soft reset.  And this is actually necessary for
drivers that rely on SPI and that also need to persist across soft reset
(eg external SPI flash memory).
2018-02-02 19:01:11 +11:00
Damien George 57d2ac1300 stm32/rng: Simplify RNG implementation by accessing raw peripheral regs.
It saves code size and RAM, and is more efficient to execute.
2018-02-02 18:22:57 +11:00
Damien George c73360bfdb stm32: Allow to build a board without any hardware I2C ports defined.
This patch adds in internal config value MICROPY_HW_ENABLE_HW_I2C that is
automatically configured, and enabled only if one or more hardware I2C
ports are defined in the mpconfigboard.h file.  If none are defined then
the pyb.I2C class is excluded from the build, along with all supporting
code.  The machine.I2C class will still be available for software I2C.

Disabling all hardware I2C on an F4 board saves around 10,000 bytes of code
and 200 bytes of RAM.
2017-12-22 15:20:42 +11:00
Damien George 971699abe7 stm32: Add support for using the Python stack. 2017-12-11 13:49:09 +11:00
Damien George 01dd7804b8 ports: Make new ports/ sub-directory and move all ports there.
This is to keep the top-level directory clean, to make it clear what is
core and what is a port, and to allow the repository to grow with new ports
in a sustainable way.
2017-09-06 13:40:51 +10:00