Vdragon
3d9a3e89cf
zephyr: Add support for GC split-heap.
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Adds the ability to use PSRAM and non-contiguous memory.
Example usage, add this to dts overlay:
/ {
heap_psram {
compatible = "micropython,heap";
size = <DT_SIZE_M(4)>;
memory-region = <&psram>;
};
heap_sram1 {
compatible = "micropython,heap";
size = <DT_SIZE_K(140)>;
memory-region = <&sram1>;
};
};
Signed-off-by: Vdragon <mail@massdriver.space >
2025-11-26 23:40:39 +11:00
Vdragon
bd111ccd4b
zephyr: Allow a custom dts.
...
Allows using custom DTS things such as bindings.
Signed-off-by: Vdragon <mail@massdriver.space >
2025-11-26 23:40:08 +11:00
Vdragon
0ebaad2ba0
zephyr/modules: Add Zephyr FileSystem support to _boot.py.
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Signed-off-by: Vdragon <mail@massdriver.space >
2025-11-20 14:14:26 +11:00
Vdragon
a40aba3455
zephyr/boards: Setup rpi_pico to use Zephyr FS instead of MPY FS.
...
Use new Zephyr FS, and be a demonstration of that configuration.
This is still on-disk compatible with existing filesystems on the internal
flash.
Signed-off-by: Vdragon <mail@massdriver.space >
2025-11-20 14:12:32 +11:00
Vdragon
559eb7cdb3
zephyr/CMakeLists.txt: Fix FS config options being ignored.
...
This makes CONFIG_MICROPY_VFS_* actually do things.
Signed-off-by: Vdragon <mail@massdriver.space >
2025-11-20 14:12:23 +11:00
Vdragon
e74367684e
zephyr: Introduce Zephyr native filesystem VFS interface.
...
This allows using Zephyr's supported VFS and interface it to MicroPython's
VFS. That makes the MicroPython-side filesystem drivers unecessary, eg you
can disable LFS2 in MicroPython but still do LFS2 because it's using
Zephyr's.
An advantage of this is that the filesystem can be shared between Zephyr C
code and MicroPython.
Signed-off-by: Vdragon <mail@massdriver.space >
2025-11-20 14:09:38 +11:00
Jeff Epler
007f127a61
all: Simplify mp_int_t/mp_uint_t definition.
...
Assuming proper C99 language support, we can select "the int type as big as
a pointer" (most of the time) or "the 64-bit int type" (nanboxing with
REPR_D), and then define everything else automatically.
This simplifies port configuration files. And the types can still be
overridden if needed.
Signed-off-by: Jeff Epler <jepler@unpythonic.net >
2025-10-23 15:12:28 +11:00
Ned Konz
2082a4d189
zephyr/boards: Add NXP MIMXRT1020 EVK board.
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This board has plenty of RAM, flash, and peripherals, including Ethernet.
It also has a microSD slot, which also works.
Access to the REPL is via UART1, which is available via the DAPLink
connector J23.
Signed-off-by: Ned Konz <ned@metamagix.tech >
2025-10-22 15:30:27 +11:00
Ned Konz
7bb78fb6df
zephyr/boards: Add XIAO BLE NRF52840 SENSE board.
...
This commit adds Zephyr support for the XIAO BLE NRF52840 SENSE board from
Seeed Studio.
It also provides a good example of a richer Zephyr port than the default,
adding:
- Frozen modules (including asyncio, upysh, aioble and aiorepl).
- Enough MicroPython features to support using aioble (at least for the
`temp_sensor.py` example).
- JSON, random, re, struct, etc.
Signed-off-by: Ned Konz <ned@metamagix.tech >
2025-10-22 15:00:35 +11:00
Ned Konz
4c11f64faa
zephyr: Add erase block size to FlashArea.areas entries.
...
This commit changes the values in the `FlashArea.areas` dictionary from
simple integer IDs to (ID, erase-block-size) tuples.
`_boot.py` was changed to use the newly available erase block size.
Signed-off-by: Ned Konz <ned@metamagix.tech >
2025-10-22 10:24:32 +11:00
Ned Konz
7090fc5dd6
zephyr: Mount all disks and flash partition, formatting if necessary.
...
Existing C code in `main.c` only mounts a flash filesystem if one exists,
and doesn't do anything if the 'storage' partition is not formatted.
This commit moves the mounting logic from `main.c` to frozen code using
`modules/_boot.py` and adds the formatting of a previously unformatted
partition if the mount fails.
Every available disk (in the newly added `DiskAccess.disks` tuple) will be
mounted on separate mount points (if they're formatted), and the 'storage'
flash partition (if any) will be mounted on /flash (and will be formatted
as LFS2 if necessary).
Also, `sys.path` will be updated with appropriate 'lib' subdirectories for
each mounted filesystem.
The current working directory will be changed to the last `DiskAccess.disk`
mounted, or to /flash if no disks were mounted.
Then `boot.py` and `main.py` will be executed from the current working
directory if they exist.
Thanks to @VynDragon for the logic in `zephyr/zephyr_storage.c`.
Signed-off-by: Ned Konz <ned@metamagix.tech >
2025-10-22 10:22:48 +11:00
Ayush Singh
00a926e99e
zephyr/boards: Add PocketBeagle 2 rev A1 m4 support.
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Same configuration as rev A0.
Signed-off-by: Ayush Singh <ayush@beagleboard.org >
2025-10-13 12:38:34 +11:00
Ayush Singh
29950295c4
zephyr/boards: Add PocketBeagle 2 rev A0 m4 support.
...
Add support for PocketBeagle 2 rev A0 m4. Since it has 256K of SRAM (split
into 192K instruction and 64K data regions), some things need to be
disabled in MicroPython to make it fit.
Signed-off-by: Ayush Singh <ayush@beagleboard.org >
2025-10-13 12:37:57 +11:00
Ned Konz
c6a78515fb
zephyr/modzsensor: Add set/get sensor attributes to zsensor.
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This commit adds `Sensor.attr_set()` and `Sensor.attr_get_*()` methods that
are necessary to set various sensor attributes if they haven't been set
statically in the device tree.
This is needed, for example, because the LSM6DS3TR-C sensor on the XIAO BLE
NRF52840 SENSE board will not work with `zsensor` because it doesn't have
any default configuration for sampling frequency.
Various `SENSOR_ATTR_*` constants from
`zephyr/incude/zephyr/drivers/sensor.h` have been added as `ATTR_*`
constants in the `zsensor` module.
Signed-off-by: Ned Konz <ned@metamagix.tech >
2025-10-13 12:06:24 +11:00
Ned Konz
d42a301afd
zephyr/machine_adc: Add ADC support.
...
This commit adds support for ADC peripherals in the Zephyr port.
As is typical for Zephyr, the ADC channel setup is done in the devicetree
(typically using an overlay). This code requires ADC channels to be listed
in the io-channels property of the zephyr,user root node.
Signed-off-by: Ned Konz <ned@metamagix.tech >
2025-10-13 11:39:59 +11:00
Vdragon
c9a16e862c
zephyr: Add boards files for rp2350's m33 on pico 2.
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Adds overlay and conf for RPi Pico2 ARM cpu on the zephyr port.
Signed-off-by: Vdragon <mail@massdriver.space >
2025-10-11 10:19:05 +11:00
Vdragon
01448d03f3
zephyr: Remove defaulting to newlib.
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Remove CONFIG_NEWLIB_LIBC=y, as it seems it is now unecessary.
Signed-off-by: Vdragon <mail@massdriver.space >
2025-10-11 10:19:05 +11:00
Damien George
b68574e591
zephyr/main: Replace mp_stack_set with mp_cstack_init_with_sp_here.
...
Signed-off-by: Damien George <damien@micropython.org >
2025-10-10 14:49:09 +11:00
Ayush Singh
a79e1fd501
zephyr/boards: Add PocketBeagle 2 rev A1 A53 support.
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This target runs on all 4 cores. Only GPIO, I2C and UART are supported
right now.
Signed-off-by: Ayush Singh <ayush@beagleboard.org >
2025-10-03 23:12:51 +10:00
Damien George
798173dce5
zephyr/mpconfigport: Enable MICROPY_PY_MATH_POW_FIX_NAN.
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This is needed because zephyr incorrectly has `pow(-1, NaN) = 1`.
Signed-off-by: Damien George <damien@micropython.org >
2025-10-01 23:59:15 +10:00
Chris Webb
81985d20c9
shared/runtime/mpirq: Check separate hard IRQ stack correctly.
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On the zephyr port, hard IRQ handlers run with a separate stack on a
different thread, so each call to mp_irq_dispatch() and mp_irq_handler()
has to be wrapped with adjustments to the stack-limit checker.
Move these adjustments into the shared mp_irq_dispatch(), introducing
MICROPY_STACK_SIZE_HARD_IRQ which a port can define to non-zero if it
uses a separate stack for hard IRQ handlers. We only need wrap the hard
dispatch case. This should reduce binary size on zephyr without affecting
other ports.
Signed-off-by: Chris Webb <chris@arachsys.com >
2025-09-25 23:59:24 +10:00
Chris Webb
c617ed159a
zephyr/machine_timer: Support hard IRQ timer callbacks.
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machine.Timer() has inconsistent behaviour between ports: some run
callbacks in hard IRQ context whereas others schedule them like soft IRQs.
As on the rp2 port, add support to the zephyr port for a hard= argument
to explicitly choose between these, setting the default to False to match
the existing behaviour.
Adjust the stack-limit check to use the ISR stack while the callback is
dispatched so that hard IRQ callbacks work, as with machine_pin.c and
machine_i2c_target.c IRQ callbacks.
Signed-off-by: Chris Webb <chris@arachsys.com >
2025-09-25 23:59:24 +10:00
Damien George
bfda577a3e
zephyr/CMakeLists.txt: Enable sys.implementation._build.
...
This is, eg, `ZEPHYR_NUCLEO_WB55RG`.
Signed-off-by: Damien George <damien@micropython.org >
2025-09-08 11:24:32 +10:00
Damien George
a3f9dec788
py/mpconfig: Enable the sys module at all feature levels by default.
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This is a pretty fundamental module, and even minimal ports like unix and
zephyr minimal have it enabled. So, enabled it by default at the lowest
feature level.
Most things in the `sys` module are configurable, and off by default, so it
shouldn't add too much to ports that don't already have it enabled (which
is just the minimal port).
Also note that `sys` is still disabled on the bare-arm port, to keep that
ultra minimal. It means we now have bare-arm without `sys` and the minimal
port with `sys`. That will allow different code size comparisons if/when
new `sys` features are added.
Signed-off-by: Damien George <damien@micropython.org >
2025-08-22 13:31:10 +10:00
Maureen Helm
afa7265ffa
zephyr: Upgrade to Zephyr v4.2.0.
...
Updates the Zephyr port build instructions and CI to use the latest
Zephyr release tag.
Tested on max32690fthr and frdm_k64f.
Signed-off-by: Maureen Helm <maureen.helm@analog.com >
2025-08-16 15:10:30 +10:00
Damien George
0c50343145
zephyr/machine_i2c_target: Implement I2CTarget class.
...
Tested and working on rpi_pico and nucleo_wb55rg.
Signed-off-by: Damien George <damien@micropython.org >
2025-08-01 23:03:17 +10:00
Damien George
4360da1684
zephyr/mpconfigport: Use MICROPY_CONFIG_ROM_LEVEL_BASIC_FEATURES.
...
This commit adjusts the configuration of the standard zephyr build to use
MICROPY_CONFIG_ROM_LEVEL_BASIC_FEATURES. That's a lot cleaner than
explicitly enabling/disabling options, and allows boards to more easily
fine-tune the settings, eg select a different feature level.
Features that are now enabled are:
- async/await keyword support
- `filter`, `property` and `reversed` builtins
- `range` attributes
- `str.count()` method
- `array` module with `array.array` object
- `collections` module with `collections.namedtuple` object
- `struct` module with everything
- `id = const()` and constant folding in the compiler
Bulding qemu_cortex_m3, the code size was originally:
Memory region Used Size Region Size %age Used
FLASH: 193864 B 256 KB 73.95%
RAM: 61992 B 64 KB 94.59%
and with this commit it is now:
Memory region Used Size Region Size %age Used
FLASH: 200698 B 256 KB 76.56%
RAM: 61992 B 64 KB 94.59%
That's a mild increase of +6834 bytes flash usage for a good selection of
new features.
Signed-off-by: Damien George <damien@micropython.org >
2025-07-31 10:48:56 +10:00
Damien George
68434b4be7
zephyr/mpconfigport_minimal: Use MICROPY_CONFIG_ROM_LEVEL_MINIMUM.
...
This commit adjusts the configuration of the minimal zephyr build to use
MICROPY_CONFIG_ROM_LEVEL_MINIMUM. That's a lot cleaner than explicitly
enabling/disabling options.
Prior to this change the minimal build for qemu_cortex_m3 had size:
Memory region Used Size Region Size %age Used
FLASH: 114436 B 256 KB 43.65%
RAM: 26320 B 64 KB 40.16%
and had the following test results (running using the CI settings, ie
`-d basics float --exclude inf_nan_arith`):
352 tests performed (7092 individual testcases)
352 tests passed
254 tests skipped: ...
With the changes here the qemu_cortex_m3 size is now:
Memory region Used Size Region Size %age Used
FLASH: 99428 B 256 KB 37.93%
RAM: 26312 B 64 KB 40.15%
That's a good decrease of about 15k firmware size. And the test suite
still passes with:
342 tests performed (6776 individual testcases)
341 tests passed
265 tests skipped: ...
Signed-off-by: Damien George <damien@micropython.org >
2025-07-31 10:48:56 +10:00
Damien George
9a9e5529af
zephyr/machine_pin: Retry configuring gpio with just GPIO_OUTPUT.
...
Some targets like frdm_k64f don't support GPIO_OUTPUT|GPIO_INPUT, so just
use GPIO_OUTPUT in those cases (it seems they still support reading the
current output state even when configured only as GPIO_OUTPUT, unlike other
targets which require both settings).
Signed-off-by: Damien George <damien@micropython.org >
2025-07-08 11:15:11 +10:00
Damien George
bf432a3e0f
zephyr/machine_timer: Make machine.Timer id argument optional.
...
With a default of -1, for soft timer. This matches other ports, and the
`extmod/machine_timer.c` implementation.
This change allows the `tests/extmod/machine_soft_timer.py` test to pass.
Signed-off-by: Damien George <damien@micropython.org >
2025-07-08 11:15:11 +10:00
Damien George
0fd65c44cf
zephyr/mpconfigport: Enable emergency exception buffer.
...
Needed to pass exception tests.
Signed-off-by: Damien George <damien@micropython.org >
2025-07-08 11:15:11 +10:00
Damien George
6881618307
zephyr/mpconfigport: Enable sys.maxsize.
...
Costs +48 bytes. Useful to introspect the target.
Signed-off-by: Damien George <damien@micropython.org >
2025-07-08 11:15:11 +10:00
Damien George
ec65cac971
zephyr/boards/rpi_pico: Add board configuration for rpi_pico.
...
Although the rpi_pico can already build and run with the zephyr port, this
configuration improves it in a number of ways:
- Use the USB CDC ACM as the REPL, rather than just a UART.
- Enable I2C and SPI, and add I2C1.
- Enable a filesystem, which matches exactly the rp2 port's RPI_PICO
configuration. So switching between zephyr and rp2 is possible and will
retain the filesystem.
- Make the MicroPython GC heap make the most use of the available RAM.
Signed-off-by: Damien George <damien@micropython.org >
2025-07-08 11:15:11 +10:00
Damien George
0faddb3c8a
zephyr/boards/nucleo_wb55rg: Enable BLE, I2C, SPI and add filesystem.
...
Bluetooth works well now on this board, so enable all supported features.
Also increase the MicroPython GC heap size to make use of the available
RAM.
Unfortunately the filesystem does not match the stm32 port's NUCLEO_WB55
configuration. That's not possible to do because stm32 uses a 512 byte
flash erase size, while zephyr uses 4096 bytes. But at least here in
zephyr there's now a sizable and usable filesystem.
Signed-off-by: Damien George <damien@micropython.org >
2025-07-08 11:15:11 +10:00
Damien George
35880d432a
zephyr/boards/frdm_k64f: Improve board configuration.
...
Changes:
- Enable CONFIG_PWM so that `machine.PWM()` works.
- Increase MicroPython GC heap size.
Signed-off-by: Damien George <damien@micropython.org >
2025-07-08 11:15:11 +10:00
Damien George
d0ccaff5b7
zephyr/mpconfigport: Enable MICROPY_NLR_THUMB_USE_LONG_JUMP.
...
Needed for some ARMv6M boards, eg rpi_pico.
Signed-off-by: Damien George <damien@micropython.org >
2025-07-08 11:15:11 +10:00
Damien George
07285323cf
zephyr/mpconfigport: Enable import of mpy and a few related features.
...
Support for importing .mpy files is quite fundamental to MicroPython these
days, eg it allows installing more efficient .mpy code via "mip install"
(and installing `unittest` only works with the .mpy version because the .py
version uses f-strings, which are not enabled on the zephyr port). So
enable it generally for use by all boards.
As part of this, also enable:
- min/max: needed by `micropython/import_mpy_invalid.py`, and widely used
- sys.modules: needed by `run-tests.py` to run .mpy tests with --via-mpy
- io module: needed to run .mpy tests, and useful for `io.IOBase`
- array slice assign: needed to run .mpy tests, and generally useful as a
way to do a memory copy.
Signed-off-by: Damien George <damien@micropython.org >
2025-07-08 11:15:11 +10:00
Damien George
16b00cd6e7
zephyr/mpconfigport: Enable machine.SoftI2C and machine.SoftSPI.
...
These work now that the C-level pin HAL is implemented.
Signed-off-by: Damien George <damien@micropython.org >
2025-07-08 11:15:11 +10:00
Damien George
19814bf50f
zephyr/mphalport: Implement C-level pin HAL.
...
Signed-off-by: Damien George <damien@micropython.org >
2025-07-08 11:15:11 +10:00
Damien George
359887933c
zephyr/machine_pin: Allow constructing a Pin with an existing Pin.
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Following other ports.
Signed-off-by: Damien George <damien@micropython.org >
2025-07-08 10:10:34 +10:00
Damien George
9b97a30943
zephyr/machine_pin: Add Pin.OPEN_DRAIN constant.
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Adding this constant is all that's needed to support open-drain pins.
Signed-off-by: Damien George <damien@micropython.org >
2025-07-08 10:10:33 +10:00
Damien George
6fd069e8a5
zephyr/src: Fix USB device_next driver to work with zephyr 4.0.0.
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The blocklist argument is not available in zephyr 4.0.0.
Signed-off-by: Damien George <damien@micropython.org >
2025-07-08 10:10:16 +10:00
Damien George
6a53319336
zephyr/src: Increase UART input buffer to 512 bytes and reduce latency.
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There are two changes here:
1. Increase the UART input bufffer to 512 bytes. That's necessary to get
basic REPL reliability tests working, and helps improve `mpremote`
usage, eg copying large files.
2. Remove `uart_sem` semaphore. This is no longer needed because
`zephyr_getchar()` should be fully non-blocking and have as low a
latency as possible. `mp_hal_stdin_rx_chr()` (which calls
`zephyr_getchar`) already uses `MICROPY_EVENT_POLL_HOOK` to get
an efficient wait, and doing an extra wait and check for the
semaphore in `zephyr_getchar()` just introduces unnecessary latency and
can lead to slower input, and potentially overflowing the UART input
buffer.
Signed-off-by: Damien George <damien@micropython.org >
2025-07-08 10:10:16 +10:00
Damien George
4951a06bbb
zephyr: Enable sys.stdin/out/err.
...
This change enables `sys.stdin`, `sys.stdout` and `sys.stderr` objects.
They are useful for general IO, and also help with testing zephyr boards.
Signed-off-by: Damien George <damien@micropython.org >
2025-07-08 10:10:16 +10:00
Damien George
6b82eb75be
zephyr/main: Add /flash/lib or /sd/lib to sys.path on start up.
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If there is a filesystem available, this change makes sure there is a "lib"
in `sys.path`, eg so that "mip install" works correctly.
Signed-off-by: Damien George <damien@micropython.org >
2025-07-08 10:10:16 +10:00
Damien George
d9b4327c66
zephyr/main: Execute boot.py and main.py like other ports.
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Changes here make the zephyr port act the same as other ports for the
start up and shut down sequence:
- `boot.py` is executed if it exists, and can force a soft reset
- `main.py` is only executed if in friendly REPL and if `boot.py` executed
successfully; and it can also force a soft reset
- print "MPY: " before "soft reboot" on soft reset
Signed-off-by: Damien George <damien@micropython.org >
2025-07-08 10:10:16 +10:00
David Schneider
16d9e704ae
zephyr: Update generated header path.
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Support disabled LEGACY_GENERATED_INCLUDE_PATH compatibility option.
Since Zephyr 3.7 generated include files are namespaced.
See also: zephyrproject-rtos/zephyr@bbe5e1e6eb
Signed-off-by: David Schneider <schneidav81@gmail.com >
2025-07-08 09:53:24 +10:00
Damien George
5eb94df09e
zephyr/prj.conf: Use UART for console as default, not CONSOLE_SUBSYS.
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Most boards enable the UART console because it's needed for USB (where USB
CDC creates a virtual UART), and for ctrl-C to work.
The `prj_minimal.conf` settings still use CONSOLE_SUBSYS.
Fixes issue #17608 .
Signed-off-by: Damien George <damien@micropython.org >
2025-07-08 09:29:30 +10:00
Damien George
5321b666ea
zephyr/README: Update URL describing QEMU network settings.
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Signed-off-by: Damien George <damien@micropython.org >
2025-07-08 09:29:30 +10:00
Damien George
9171865782
zephyr/boards: Disable WDT on qemu boards and networking for cortex_m3.
...
This gets qemu_x86 and qemu_cortex_m3 building with `prj.conf` settings.
Signed-off-by: Damien George <damien@micropython.org >
2025-07-08 09:29:30 +10:00
