Update micropython to 1.28 - #7316
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mmilata
added
core
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| model | device_test | click_test | persistence_test |
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| T2T1 |  test(all)  main(all)  |
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| T3B1 |  test(all)  main(all)  |
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| T3T1 |  test(all)  main(all)  |
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| T3W1 |  test(all)  main(all)  |
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Latest CI run: 30587619974
matejcik
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Jul 17, 2026
| "8d07f90fb4bbe7715fa327c926770166a11be2e494a970605f2e12557f66c9b9" | ||
| ), | ||
| bytearray("Good luck!"), | ||
| bytes("Good luck!", "utf-8"), |
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why not bytes(b"Good luck!")b"Good luck!" ?
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mmilata
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July 17, 2026 15:47
mmilata
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Let's postpone merging until after the Freeze for |
romanz
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Jul 28, 2026
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Reviewed some commits, will continue tomorrow.
romanz
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Jul 29, 2026
romanz
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Jul 29, 2026
romanz
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Jul 29, 2026
romanz
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I'm fine with finishing porting this feature in a separate PR.
matejcik
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FullType related changes LGTM
for the record i'll be adding #!feature(const_traits) anyway for qstrs so we can leverage it for types too. but there are gonna be subsequent PRs for that
Relevant micropython commits: 28aaab95909aab092cc8c16188fec157142f18a9 py/objstr: Add hex/fromhex to bytes/memoryview/bytearray. [no changelog]
It is no longer part of micropython. Relevant micropython commits: a1fbb1980cf90cc58186eac9cc405a97ebd41e64 extmod/modtimeq: Remove timeq module. [no changelog]
E.g. uos was renamed to os, uerrno to errno. Relevant micropython commits: 45ac651d1a2801bccbdc32fddaa9b029ed4ce879 all: Rename *umodule*.c to remove the "u" prefix. f5f9edf6457624bf32e71b0c2fdcfbfa5d5753a6 all: Rename UMODULE to MODULE in preprocessor/Makefile vars. [no changelog]
Relevant micropython commits: 995555300181b3385855f5a4ffb629441553d3ea extmod/modutime: Provide a generic time module. df05caea6c6437a8b4756ec502a5e6210f4b6256 shared/timeutils: Standardize supported date range on all platforms. [no changelog]
Relevant micropython commits: 289b2dd87960a4cdf019013cecd489f0d0cabc26 py/objstr: Add new mp_obj_new_str_from_cstr() helper function. [no changelog]
The str variant now also does UTF-8 validation which can be removed to improve performance where justified. Relevant micropython commits: 0b9ee86133a2a0524691c6cdac209dbfcb3bf116 py: Add mp_obj_new_str_from_vstr, and use it where relevant. 88864587f5af292d7f86aceb6bf40e8331e9a8d6 py/objstr: Always ensure mp_obj_str_from_vstr is unicode-safe. [no changelog]
Relevant micropython commits: 971617196644775905fd821c39c6a7771b63dbaf py/misc: Remove m_new_obj[_var]_with_finaliser macros. [no changelog]
Relevant micropython commits: 3ac8b5851e5f4dade465d52b91ed2ccc17851263 py/obj: Add slot-index mp_obj_type_t representation. cb0ffdd2bf25dcac3c230bdc1168d492aabaf573 py/obj: Remove basic mp_obj_type_t sparse representation. [no changelog]
Relevant micropython commits: 3ac8b5851e5f4dade465d52b91ed2ccc17851263 py/obj: Add slot-index mp_obj_type_t representation. cb0ffdd2bf25dcac3c230bdc1168d492aabaf573 py/obj: Remove basic mp_obj_type_t sparse representation. [no changelog]
…unctions [no changelog]
Relevant micropython changes: c2b8e6e5d685ce0ef7cd7186f326cac8a39eb2a3 lib/uzlib: Clean up tinf -> uzlib rename. e6c290c3d145de81e23f406c84359860c4d6e632 lib/uzlib: Add a source_read_data var to pass to source_read_cb. Needs trezor-specific patch. [no changelog]
Relevant micropython changes: decf8e6a8bb940d5829ca3296790631fcece7b21 all: Remove the "STATIC" macro and just use "static" instead. [no changelog]
The file is now be quite similar to the upstream one to make future updates easier. Notable differences include: - entry point is `coreapp_emu()` instead of `main()` - different command line handling that loads `main` if no module or command is provided - no filesystem access for frozen emulator to prevent it from loading live modules - no default sys.path [no changelog]
Relevant micropython commits: b2e82402688b53829f37475583231b067b9faea7 py/mkrules.mk: Keep all build artefacts inside $(BUILD) directory. 47c84286e8c8d9873e99f12711a683ecd6b9ca62 all: Fix paths to mpy-cross and micropython binaries. [no changelog]
Relevant micropython commits: fc3d7ae11be11a7f05709ebfd439061fce9ee555 py/make_root_pointers: Add MP_REGISTER_ROOT_POINTER parser/generator. 7e4b205cb00013b272e4cf9fac128866bf0e1f21 py/mpstate: Drop MICROPY_PORT_ROOT_POINTERS from mp_state_vm_t. [no changelog]
[no changelog]
Relevant micropython commits: 908ab1ceca15ee6fd0ef82ca4cba770a3ec41894 py/objint: Fix int.to_bytes() buffer size checks. 86f2c285eb222f30c24df187ac66d3e0c80caf61 py: Add new cstack API for stack checking, with limit margin macro. c046b23ea29e0183c899a8dbe1da3bed3440a255 shared/runtime/pyexec: Don't allow Ctrl+C to interrupt frozen boot code. 3bca93b2d00dec37b3770c3e4fac15f07e0b9f15 ports: Fix sys.stdout.buffer.write() return value. 2c8dab7ab4ec0884c6428afc613d9dcc322d8c6d py/objarray: Detect bytearray(str) without an encoding. [no changelog]
Relevant micropython commits: 2c828a88153dfdbd767fc0d8f2124cfbefdcbc81 unix: Update port to use the new event functions. 2757acf6ed1fe165e4d8aa72ba8090fb9bc60c31 py/nlr: Implement jump callbacks. 3446d440f661cf3c052c08e5c6879b1e59a478bb shared/runtime/gchelper: Drop cpu directive from ARM asm helpers. [no changelog]
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romanz
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Jul 30, 2026
[no changelog]
romanz
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Jul 31, 2026
| @@ -29,6 +29,9 @@ async def _confirm_word( | |||
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| # remove duplicates | |||
| non_duplicates = list(set(share_words)) | |||
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nit: maybe always use sorted()?
non_duplicates = sorted(set(share_words))
romanz
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Jul 31, 2026
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BTW, |
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Tested manually |
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Fixes #2990. Submodule update: trezor/micropython#31.
Major changes
hexlify/unhexlifyis deprecated, usebytes.hex()/bytes.fromhex()instead.uprefix removed from their name to match the CPython name.mp_obj_type_trepresentation changed, this also prompted some changes on Rust side. As that struct now has variable size, whenever we construct a new type object, the return type isFullTypeinstead ofType.Missing
Flash utilization
PYOPT=1MICROPY_QSTR_BYTES_IN_HASH, i.e. 2 formain, 1 for 1.28.0main1.28.0-main1.28.0/mainMICROPY_QSTR_BYTES_IN_HASH
We might reclaim another 8KiB of flash by setting
MICROPY_QSTR_BYTES_IN_HASHto0but it makes dict lookups slightly slower. Qstrhash()values are precomputed during freezing, the setting determines size of each hash or can be 0 to disable precomputation. We have about 5000 qstrings, not quite sure how this becomes 8KiB. Micropython PR: micropython/micropython#12835Using value
1(new micropython default) causes UI diffs in share word confirmation and is the reason for 82eaaf9.PYOPT=1mainuses2, default for 1.28.0 is val=10times from this workflow runmain210main0main0