This adds a new undefined singleton to Python, that corresponds directly to
JavaScript `undefined`. It's accessible via `js.undefined`.
Signed-off-by: Damien George <damien@micropython.org>
This reverts part of commit fa23e4b093, to
make it so that Python `None` converts to JavaScript `null` (and JavaScript
`null` already converts to Python `None`). That's consistent with how the
`json` module converts these values back and forth.
Signed-off-by: Damien George <damien@micropython.org>
When a fatal error occurs it's important to know which precise version it
occurred on in order to be able to decode the crash dump information such
as the backtrace.
By wrapping around the built-in IDF panic handler we can print some extra
information whenever a fatal error occurs. The message links to a new wiki
page which contains additional information on how to debug ESP32 issues,
and links to the bug reporting issue template.
Signed-off-by: Daniël van de Giessen <daniel@dvdgiessen.nl>
Fixes automatic baudrate calculation results.
Default clock source on this SoC is HSE not PCLK1. We could fix this by
switching to PCLK1 instead, but two extra complications:
- PCLK1 on this board is a 42.5MHz and the Pyboard CAN sample_point
calculation requires an exact match, which is harder to hit with this
source frequency.
- Would be a breaking change for any existing Python code on this board,
i.e. specifying brp, bs1, bs2 to initialise CAN.
In the future it might be worth looking switching to the PLL source on this
SoC instead, as this is a much higher frequency that would give higher
quality BRS bitrate matches (probably too high without using the second
divider going into the CAN peripheral though, so more code changes needed
also).
This work was funded through GitHub Sponsors.
Signed-off-by: Angus Gratton <angus@redyak.com.au>
And change Py None conversion so it converts to JS undefined.
The semantics for conversion of these objects are then:
- Python None -> JavaScript undefined
- JavaScript undefined -> Python None
- JavaScript null -> Python None
This follows Pyodide:
https://pyodide.org/en/stable/usage/type-conversions.html
Signed-off-by: Damien George <damien@micropython.org>
This commit defines a new `JsException` exception type which is used on the
Python side to wrap JavaScript errors. That's then used when a JavaScript
Promise is rejected, and the reason is then converted to a `JsException`
for the Python side to handle.
This new exception is exposed as `jsffi.JsException`.
Signed-off-by: Damien George <damien@micropython.org>
Non-blocking SSL streams can be difficult to get right, so provide a
working example, of a HTTPS client.
Signed-off-by: Damien George <damien@micropython.org>
It's better for discoverability to have these examples named `https_xxx.py`
rather than `http_xxx_ssl.py`.
Signed-off-by: Damien George <damien@micropython.org>
Only when dynamic USB devices are enabled.
The issue here is that when the USB reset triggers, the dynamic USB device
reset callback is called from inside the TinyUSB task.
If that callback tries to print something then it'll call through to
tud_cdc_write_flush(), but TinyUSB hasn't finished updating state yet to
know it's no longer configured. Subsequently it may try to queue a transfer
and then the low-level DCD layer panics.
By explicitly stalling the endpoint first, usbd_edpt_claim() will fail and
tud_cdc_write_flush() returns immediately.
This work was funded through GitHub Sponsors.
Signed-off-by: Angus Gratton <angus@redyak.com.au>
The W5100 and W5100S only have 4 available sockets and 16kB of socket
buffer. Allocating 16kB to either the receive or transmit buffer of a
single socket is not allowed, so the current setup does not change the
allocation for socket 0 from the reset default. ctlwizchip is returning -1
to indicate the error, but the response isn't being inspected and probably
doesn't need to be.
Signed-off-by: Jared Hancock <jared@greezybacon.me>
For ESP32C3/S2/S3 IDFv5 exposes new internal temperature API which is
different to the base ESP32, IDFv4.
Thanks to @robert-hh for cleaner code and testing sensor capability in
these devices.
See discussion #10443.
Signed-off-by: Rick Sorensen <rick.sorensen@gmail.com>
JavaScript semantics are such that the caller of an async function does not
need to await that function for it to run to completion. This commit makes
that behaviour also apply to top-level async Python code run via
`runPythonAsync()`.
Signed-off-by: Damien George <damien@micropython.org>
The `reason` in a rejected promise should be an instance of `Error`. That
leads to better error messages on the JavaScript side.
Signed-off-by: Damien George <damien@micropython.org>
Different MCUs have different requirements for the minimum number of bytes
that can be written to internal flash.
Signed-off-by: Damien George <damien@micropython.org>
The calculations `num_word32 / 4` and `num_word32 / 8` were rounding down
the number of words to program to flash, and therefore possibly truncating
the data (eg mboot could miss writing the final few words of the firmware).
That's fixed in this commit by adding extra logic to program any remaining
words. And the logic for H5 and H7 is combined.
Signed-off-by: Damien George <damien@micropython.org>
In case there is a power failure after during this operation, the key must
be the last thing that is written, to indicate valid data.
Signed-off-by: Damien George <damien@micropython.org>
Although the original motivation given for the workaround[1] is correct,
nlr.o and nlrthumb.o are linked with a small enough distance that the
problem does not occur, and the workaround isn't necessary. The distance
between the b instruction and its target (nlr_push_tail) is just 64
bytes[2], well within the ±2046 byte range addressable by an
unconditional branch instruction in Thumb mode.
The workaround induces a relocation in the text section (textrel), which
isn't supported everywhere, notably not on musl-libc[3], where it causes
a crash on start-up. With the workaround removed, micropython works on an
ARMv5T Linux system built with musl-libc.
This commit changes nlrthumb.c to use a direct jump by default, but
leaves the long jump workaround as an option for those cases where it's
actually needed.
[1]: commit dd376a239d
Author: Damien George <damien.p.george@gmail.com>
Date: Fri Sep 1 15:25:29 2017 +1000
py/nlrthumb: Get working again on standard Thumb arch (ie not Thumb2).
"b" on Thumb might not be long enough for the jump to nlr_push_tail so
it must be done indirectly.
[2]: Excerpt from objdump -d micropython:
000095c4 <nlr_push_tail>:
95c4: b510 push {r4, lr}
95c6: 0004 movs r4, r0
95c8: f02d fd42 bl 37050 <mp_thread_get_state>
95cc: 6943 ldr r3, [r0, #20]
95ce: 6023 str r3, [r4, #0]
95d0: 6144 str r4, [r0, #20]
95d2: 2000 movs r0, #0
95d4: bd10 pop {r4, pc}
000095d6 <nlr_pop>:
95d6: b510 push {r4, lr}
95d8: f02d fd3a bl 37050 <mp_thread_get_state>
95dc: 6943 ldr r3, [r0, #20]
95de: 681b ldr r3, [r3, #0]
95e0: 6143 str r3, [r0, #20]
95e2: bd10 pop {r4, pc}
000095e4 <nlr_push>:
95e4: 60c4 str r4, [r0, #12]
95e6: 6105 str r5, [r0, #16]
95e8: 6146 str r6, [r0, #20]
95ea: 6187 str r7, [r0, #24]
95ec: 4641 mov r1, r8
95ee: 61c1 str r1, [r0, #28]
95f0: 4649 mov r1, r9
95f2: 6201 str r1, [r0, #32]
95f4: 4651 mov r1, sl
95f6: 6241 str r1, [r0, #36] @ 0x24
95f8: 4659 mov r1, fp
95fa: 6281 str r1, [r0, #40] @ 0x28
95fc: 4669 mov r1, sp
95fe: 62c1 str r1, [r0, #44] @ 0x2c
9600: 4671 mov r1, lr
9602: 6081 str r1, [r0, #8]
9604: e7de b.n 95c4 <nlr_push_tail>
[3]: https://www.openwall.com/lists/musl/2020/09/25/4
Signed-off-by: J. Neuschäfer <j.ne@posteo.net>
This allows a simple way to run the existing asyncio tests under the
webassembly port, which doesn't support `asyncio.run()`.
Signed-off-by: Damien George <damien@micropython.org>
This commit adds a significant portion of the existing MicroPython asyncio
module to the webassembly port, using parts of the existing asyncio code
and some custom JavaScript parts.
The key difference to the standard asyncio is that this version uses the
JavaScript runtime to do the actual scheduling and waiting on events, eg
Promise fulfillment, timeouts, fetching URLs.
This implementation does not include asyncio.run(). Instead one just uses
asyncio.create_task(..) to start tasks and then returns to the JavaScript.
Then JavaScript will run the tasks.
The implementation here tries to reuse as much existing asyncio code as
possible, and gets all the semantics correct for things like cancellation
and asyncio.wait_for. An alternative approach would reimplement Task,
Event, etc using JavaScript Promise's. That approach is very difficult to
get right when trying to implement cancellation (because it's not possible
to cancel a JavaScript Promise).
Signed-off-by: Damien George <damien@micropython.org>
When a Promise is rejected on the JavaScript side, the reject reason should
be thrown into the encapsulating generator on the Python side.
Signed-off-by: Damien George <damien@micropython.org>
An exception on the Python side should be passed to the Promise reject
callback on the JavaScript side.
Signed-off-by: Damien George <damien@micropython.org>
Otherwise Emscripten allocates it on the Emscripten C stack, which will
overflow for large amounts of code.
Fixes issue #14307.
Signed-off-by: Damien George <damien@micropython.org>
In modularize mode, the `_createMicroPythonModule()` constructor must be
await'ed on, before `Module` is ready to use.
Signed-off-by: Damien George <damien@micropython.org>
Two cases, one assigning to a slice.
Closes https://github.com/micropython/micropython/issues/13283
Second is extending a slice from itself, similar logic.
In both cases the problem occurs when m_renew causes realloc to move the
buffer, leaving a dangling pointer behind.
There are more complex and hard to fix cases when either argument is a
memoryview into the buffer, currently resizing to a new address breaks
memoryviews into that object.
Reproducing this bug and confirming the fix was done by running the unix
port under valgrind with GC-aware extensions.
Note in default configurations with GIL this bug exists but has no impact
(the free buffer won't be reused while the function is still executing, and
is no longer referenced after it returns).
Signed-off-by: Angus Gratton <angus@redyak.com.au>
This commit swaps the order of the `flags` and `name` struct initialisers
for `mp_obj_type_t`, to fix an incompatibility with C++. The original
order of the initialiser didn't match the definition of the type, and
although that's still legal C, it's not legal C++.
Signed-off-by: Vonasmic <kasarkal123@gmail.com>
