Commit Graph

35 Commits

Author SHA1 Message Date
Damien George ebacdfabb6 stm32/machine_adc: Add machine.ADC class. 2019-09-04 15:40:24 +10:00
Damien George 59b7166d87 stm32: Add initial support for STM32WBxx MCUs.
This new series of MCUs is similar to the L4 series with an additional
Cortex-M0 coprocessor.  The firmware for the wireless stack must be managed
separately and MicroPython does not currently interface to it.  Supported
features so far include: RTC, UART, USB, internal flash filesystem.
2019-07-17 16:33:31 +10:00
Damien George 23d9c6a0fd stm32: Add initial support for STM32L0xx MCUs. 2019-07-05 17:24:59 +10:00
Damien George afb2e9dd94 stm32/modmachine: Disable IRQs before entering bootloader.
To make sure that the code that enters the bootloader is not interrupted.
2019-07-04 10:49:51 +10:00
Damien George f88cb8a514 stm32/modmachine: Make RTC class available in machine module.
This is a start to make a more consistent machine.RTC class across ports.
The stm32 pyb.RTC class at least has the datetime() method which behaves
the same as esp8266 and esp32, and with this patch the ntptime.py script
now works with stm32.
2019-07-03 16:46:07 +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
Andrew Leech 66bcb5596a stm32/modmachine: In bootloader() disable caches before reset of periphs
Otherwise flushing and disabling the D-cache will give a hard-fault when
SDRAM is used.

Fixes #4818.
2019-05-29 15:50:17 +10:00
Damien George e1e3704aa1 stm32/modmachine: Create dedicated asm function to branch to bootloader.
Recent gcc versions (at least 9.1) give a warning about using "sp" in the
clobber list.  Such code is removed by this patch.  A dedicated function is
instead used to set SP and branch to the bootloader so the code has full
control over what happens.

Fixes issue #4785.
2019-05-17 17:20:43 +10:00
Damien George 65b1fefa31 stm32/modmachine: Add ability to pass through user data to mboot. 2019-02-15 15:10:04 +11:00
Damien George b26046aca2 stm32/modmachine: Make bootloader() enter custom loader if it's enabled.
If a custom bootloader is enabled (eg mboot) then machine.bootloader() will
now enter that loader.  To get the original ST DFU loader pass any argument
to the function, like machine.bootloader(1).
2019-02-07 16:13:57 +11:00
Damien George 285d265eee stm32: Implement machine.lightsleep(). 2019-01-27 11:13:32 +11:00
roland 4d8504425a stm32/modmachine: Fix reset_cause to correctly give DEEPSLEEP on L4 MCU.
Before this fix it returned SOFT_RESET after waking from a deepsleep
(standby).
2018-12-30 01:11:25 +11:00
Damien George c6365ffb92 stm32/powerctrl: Add support for standby mode on L4 MCUs.
This maps to machine.deepsleep() which is now supported.
2018-12-05 00:40:05 +11:00
Damien George 66ca8e9b2c stm32/powerctrl: Move (deep)sleep funcs from modmachine.c to powerctrl.c 2018-11-28 12:22:20 +11:00
Damien George bc54c57590 stm32/powerctrl: Optimise passing of default values to set_sysclk. 2018-09-24 17:34:05 +10:00
Damien George dff14c740b stm32/powerctrl: Move function to set SYSCLK into new powerctrl file.
Power and clock control is low-level functionality and it makes sense to
have it in a dedicated file, at least so it can be reused by other parts of
the code.
2018-09-24 14:18:18 +10:00
Damien George 1acf58c08f stm32/modmachine: Re-enable PLLSAI[1] after waking from stop mode.
On F7s PLLSAI is used as a 48MHz clock source if the main PLL cannot
provide such a frequency, and on L4s PLLSAI1 is always used as a clock
source for the peripherals.  This commit makes sure these PLLs are
re-enabled upon waking from stop mode so the peripherals work.

See issues #4022 and #4178 (L4 specific).
2018-09-24 12:55:15 +10:00
Damien George 47550ef2cd stm32: For MCUs that have PLLSAI allow to set SYSCLK at 2MHz increments.
MCUs that have a PLLSAI can use it to generate a 48MHz clock for USB, SDIO
and RNG peripherals.  In such cases the SYSCLK is not restricted to values
that allow the system PLL to generate 48MHz, but can be any frequency.
This patch allows such configurability for F7 MCUs, allowing the SYSCLK to
be set in 2MHz increments via machine.freq().  PLLSAI will only be enabled
if needed, and consumes about 1mA extra.  This fine grained control of
frequency is useful to get accurate SPI baudrates, for example.
2018-09-11 16:42:57 +10:00
Damien George 5482d84673 stm32/modmachine: Get machine.sleep working on L4 MCUs.
When waking from stop mode most of the system is still in the same state as
before entering stop, so only minimal configuration is needed to bring the
system clock back online.
2018-08-01 17:14:19 +10:00
Damien George 21dae87710 stm32/modmachine: Get machine.sleep working on F0 MCUs. 2018-07-31 17:25:53 +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 ea7e747979 stm32: Add support for STM32F0 MCUs. 2018-05-28 21:49:49 +10:00
Damien George 6d83468a30 stm32: Allow a board to disable MICROPY_VFS_FAT. 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 cb3456ddfe stm32: Don't use %lu or %lx for formatting, use just %u or %x.
On this 32-bit arch there's no need to use the long version of the format
specifier.  It's only there to appease the compiler which checks the type
of the args passed to printf.  Removing the "l" saves a bit of code space.
2018-05-04 15:52:03 +10:00
Damien George cf9fc7346d stm32: Allow a board to configure the HSE in bypass mode.
To use HSE bypass mode the board should define:

    #define MICROPY_HW_CLK_USE_BYPASS (1)

If this is not defined, or is defined to 0, then HSE oscillator mode is
used.
2018-04-11 16:46:47 +10:00
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 d151adb791 stm32/modmachine: Support basic H7 MCU features. 2018-03-09 15:10:53 +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 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 9e7d2c7abb stm32/modmachine: In freq(), select flash latency value based on freq. 2018-02-01 14:06:18 +11:00
Peter D. Gray 1ed2c23efb stm32/modmachine: Handle case of no MICROPY_PY_MACHINE_I2C. 2018-01-31 15:59:04 +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