Commit Graph

26 Commits

Author SHA1 Message Date
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