Supported from GCC 8 and up, and Compiler Explorer suggests it works as
expected with Clang since 3.6 (2014).
- Fixes situation where building embedded MicroPython with -O0 and
MICROPY_NLR_X64 crashes at runtime (due to nlr_push pushing the
frame pointer register EBP). Closes#12421.
- Allows removing the macOS tweak to undo pushing EBP onto the stack
in the generated function prelude.
Signed-off-by: Angus Gratton <angus@redyak.com.au>
Before, incorrect use when calling a core function would just say
"extra keyword arguments given"; now, it will name the argument:
```python
>>> Synthesizer(bad_kwarg="boo")
TypeError: unexpected keyword argument 'bad_kwarg'
```
Follow-up to 519c24dd487 when MICROPY_GC_SPLIT_HEAP_AUTO is enabled, based
on discussion at
https://github.com/orgs/micropython/discussions/12316#discussioncomment-6858007
gc.mem_free() is always a heuristic, but this makes it a more useful
heuristic for common use cases.
Signed-off-by: Angus Gratton <angus@redyak.com.au>
with the i2c bus operating at 400kHz this achieves a 4.8kHz SPI clock
rate which could be worse.
It accepts the same style of init sequence as displayio.
tested by scoping the pins on the espressif lcd dev kit with a dummy init sequence:
```python
dotclockframebuffer.ioexpander_send_init_sequence(
bus=bus,
i2c_address=expander_addr,
gpio_address=1,
gpio_data_len=1,
gpio_data=0xff,
cs_bit=1,
mosi_bit=3,
clk_bit=2,
init_sequence=init_sequence)
```
In CPython, `_thread.start_new_thread()` returns an ID that is the same ID
that is returned by `_thread.get_ident()`. The current MicroPython
implementation of `_thread.start_new_thread()` always returns `None`.
This modifies the required functions to return a value. The native thread
id is returned since this can be used for interop with other functions, for
example, `pthread_kill()` on *nix. `_thread.get_ident()` is also modified
to return the native thread id so that the values match and avoids the need
for a separate `native_id` attribute.
Fixes issue #12153.
Signed-off-by: David Lechner <david@pybricks.com>
Because mpy_ld.py doesn't know the target object representation, it emits
instances of `MP_OBJ_NEW_QSTR(MP_QSTR_Foo)` as const string objects, rather
than qstrs. However this doesn't work for map keys (e.g. for a locals dict)
because the map has all_keys_are_qstrs flag is set (and also auto-complete
requires the map keys to be qstrs).
Instead, emit them as regular qstrs, and make a functioning MP_OBJ_NEW_QSTR
function available (via `native_to_obj`, also used for e.g. making
integers).
Remove the code from mpy_ld.py to emit qstrs as constant strings, but leave
behind the scaffold to emit constant objects in case we want to do use this
in the future.
Strictly this should be a .mpy sub-version bump, even though the function
table isn't changing, it does lead to a change in behavior for a new .mpy
running against old MicroPython. `mp_native_to_obj` will incorrectly return
the qstr value directly as an `mp_obj_t`, leading to unexpected results.
But given that it's broken at the moment, it seems unlikely that anyone is
relying on this, so it's not work the other downsides of a sub-version bump
(i.e. breaking pure-Python modules that use @native). The opposite case of
running an old .mpy on new MicroPython is unchanged, and remains broken in
exactly the same way.
This work was funded through GitHub Sponsors.
Signed-off-by: Jim Mussared <jim.mussared@gmail.com>
This adds support for the x format code in struct.pack and struct.unpack.
The primary use case for this is ignoring bytes while unpacking. When
interfacing with existing systems, it may often happen that you either have
fields in a struct that aren't properly specified or you simply don't care
about them. Being able to easily skip them is useful.
Signed-off-by: Daniël van de Giessen <daniel@dvdgiessen.nl>
Eliminate `TypeError` when format string contains no named conversions.
This matches CPython behavior.
Signed-off-by: mcskatkat <mc_skatkat@hotmail.com>
