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It has a ton of pins in a Mega form-factor
This also includes a change to init the stack earlier. It fixes
a crash that occurs if the flash doesn't start correctly and the
original spot isn't reached.
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This saves code space in builds which use link-time optimization.
The optimization drops the untranslated strings and replaces them
with a compressed_string_t struct. It can then be decompressed to
a c string.
Builds without LTO work as well but include both untranslated
strings and compressed strings.
This work could be expanded to include QSTRs and loaded strings if
a compress method is added to C. Its tracked in #531.
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This allows for the heap to fill all space but the stack. It also
allows us to designate space for memory outside the runtime for
things such as USB descriptors, flash cache and main filename.
Fixes #754
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This prevents bugs where gc_collect is called from C code that did
a recent allocation.
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.. this reduces stack usage in main() substantially, because
the 512 byte stack allocation will only exist during the new run_boot_py
function's duration.
Closes: #904
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.. setting it based on the ad-hoc stack pointer calculation of
mp_stack_ctrl_init() meant that the stack used above main() counts
against the 1KiB safety factor that the mp_stack_set_limit call tries
to establish. It turns out, at least on M4, that over half of the
safety factor is used up by stack-above-main()!
In the case of the basics/gen_stack_overflow.py test,
which blows the stack on purpose, it turns out that gc would be called
while handling the "maximum recursion depth exceeded" error, and this
needed more stack than was left.
Closes: #900
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intended use
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We were storing the wrong current color.
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It can control autoreload and the rgb status led.
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Fixes #383
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Also, fix and enable the status neopixel.
Fixes #264
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* Introduce a python script to generate the USB descriptor instead of
a bunch of C macros. In the future, we can use this dynamically in
CircuitPython.
* Add support for detecting read-only mass storage mounts.
Fixes #377
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character.
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* Revert "Read serial input as a background task so we can check for the interrupt character."
This reverts commit 046092e8a29822ae5d761fbaac1a3af181b1297c.
* Revert "Check INTERNAL_LIBM make flag in a safer way."
This reverts commit 2b80add22f5d22544d8362c19d4332a489325ac9.
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character.
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* atmel-samd: Remove ASF3. This will break builds.
* atmel-samd: Add ASF4 for the SAMD21 and SAMD51.
* Introduce the supervisor concept to facilitate porting.
The supervisor is the code which runs individual MicroPython VMs. By
splitting it out we make it more consistent and easier to find.
This also adds very basic SAMD21 and SAMD51 support using the
supervisor. Only the REPL currently works.
This begins the work for #178.
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