Changelog

Thread and Bluetooth together on the W5

SDK

• Improved
  core_reset(), core_reset_reason() and remote reset over USB and BLE tiles#337
• Improved
  Fix drift between docs, status table, generators and code tiles#335
• New
  BreakingUDP receive callback takes one packet struct tiles#334
• Fix
  AES shared with BLE broke Thread's self-test; visible Thread fatals tiles#332
• New
  Provision the Thread network over BLE; Thread joins on boot (milestone 2, step B) tiles#331
• New
  BLE + Thread in one Core.ST.W5 image (milestone 2, step A) tiles#330

Drivers

• Improved
  Fix four P1s and doc/twin drift across 16 public driversDisplay.RGBW, Drive.A.2, Drive.DC.H, Drive.H, Drive.P, Power.L.1N, Power.L.1T, Sense.CAP, Sense.HR, Sense.I.6P6, Sense.I.9, Sense.M.3G, Sense.MIC, Sense.T.C, Sense.TOF, Store.O.128 tiles#336

Studio

• New
  Reset the board from RUN, over SWD, USB or Bluetooth web#570
• Fix
  Opening a board drops a selection on another board web#566
• New
  Prompt caching for Studio's Claude, and Sonnet 5.5 web#565
• New
  Claude programs several boards in one request web#556
• New
  Thread's packet receive callback, and POWER sees a probe rail already on web#555
• New
  Bluetooth and Thread together on the W5 web#551
• Fix
  Keep Bluetooth and Thread apart until combined W5 images boot web#548
• New
  Boards, a Wireless block, and Bluetooth + Thread together on the W5 web#547
• New
  Thread networks on the Core.ST.W5 web#542

SDK

• New
  OpenThread on Core.ST.W5, milestone 1; shared timer fix tiles#329
• Improved
  Move shared radio plumbing from sdk/ble to sdk/wpan; ST license notice tiles#328
• Fix
  Read die temperature and VDD without an ADC pad tiles#327
• Improved
  core_ble.h: set_value notifies by itself; notify() is a documented no-op tiles#325
• Improved
  Peripheral-side ATT MTU exchange; Core.USB.line DSL event tiles#324
• New
  Firmware updates over Bluetooth for Core.ST.W5, delta updates, app-last link order tiles#323
• Fix
  Characteristics are variable-length (Is_Variable was 0 = fixed); zero-initialize them tiles#317

Drivers

• New
  Power.L.1T: Output voltage as a Studio setting (3.4.0) tiles#322
• Fix
  Sense.M.3G: Init leaves the BMM350 measuring, getters refresh themselves; @studio usage (1.1.0) tiles#321
• New
  Power.L.1N: USB-C source detection and opt-in auto VBUS limit (1.3.0) tiles#320
• Fix
  power_l_1t LDO comment, pad 10 note now says 100 mA tiles#319
• Fix
  Drive.P: Settle the supply for 100 ms at the end of init (3.6.1) tiles#316
• New
  Drive.P: Start in the low range; per-sample voltage limits; hazard-flagged controls (3.6.0) tiles#315

Studio

• Fix
  Device log as a pane like the Scope; Config tab; quieter scope web#538
• New
  The vibe coder can ask to switch a Core to C web#537
• Fix
  Flash panel back to buttons; Core call headers; log Copy/Clear; dev:bench web#534
• Fix
  Attach a granted USB Core on load and plug-in; USB 5V by default web#533
• Improved
  BLE inspector hint points at the Core's Bluetooth section web#529
• Improved
  set_bluetooth_contract tool for Claude; contract in Capabilities web#526
• Fix
  Intent limits from the driver, duplicate bindings, POWER without the declaration web#525
• Fix
  Show a CoreProbe supply that survived a page reload web#524
• Fix
  An SWD flash replaces a W5 board key Studio doesn't have web#523
• New
  Bluetooth firmware updates for Core.ST.W5, on-chip SWD compare, flash panel redesign web#518
• New
  Identify serial-update Cores over serial, not the ST bootloader web#517
• New
  C mode for the vibe coder: Claude writes the behavior in C against the full driver API web#516
• Fix
  Tell Claude how to drive read-then-get tiles (Sense.M.3G never changed) web#511
• New
  USB-C connector CC1/CC2 pins, wired to the Power.L.1N's CC inputs web#509
• Fix
  Power.L.1T V+ rated 100 mA, not 10 mA web#508
• Fix
  The scope ignores a data frame sent again over BLE web#506
• Fix
  Auto-wire puts I2C on the Core's pull-up bus and switches the pull-ups on web#505
• New
  Honor hazard-flagged driver settings web#499
• Fix
  Pass an out-buffer to every fixed-buffer host call; Help me fix knows Studio builds web#498

SDK

• Fix
  A serial update starts the next image clean; DBGMCU trace fixes; ITM no longer hangs without a probe tiles#308

Drivers

• Improved
  Promote Sense.CAP to public: its definition, driver, twin and tests return tiles#314

Studio

• Improved
  Catalog: Sense.CAP is public (beta) web#487
• Improved
  Studio palette: only tiles you can build against web#477

SDK

• New
  I3C controller, tiles_pal bridge and coregen key; Sense.I.6P6 over I3C tiles#302
• Fix
  Bus recovery bit-bangs the pins the pads actually use (H5, W5) tiles#301
• Fix
  SWD config writes DBGMCU where it lands; SWD attach test tiles#300
• New
  SPI and SPI DMA, circular ADC DMA, core_nvm on EDATA tiles#299
• New
  Fix the H5 foundation; USB serial, 1200-baud touch and serial update tiles#298
• Improved
  The Cores are renamed after their silkscreens: Core.ST.L4.1 is now Core.ST.L4, and likewise for the other Cores. Old names keep working. tiles#297
• New
  L0 LSI calibration; fixes from the first Core.ST.L0.1 bench tiles#296
• Fix
  Dual-bus tiles get their own SPI chip-select (coregen reads bus2) tiles#295
• Fix
  Per-tile SPI chip-select, so several SPI tiles can share a bus tiles#294
• New
  SPI master done properly on L4 and W5 (multi-byte, DMA, timeouts) tiles#293
• New
  Flash-backed core_nvm on L4 and W5 (1 KB, survives reflash) tiles#291
• Fix
  L4 USB never blocks, survives Stop, and wakes a sleeping Core tiles#285
• Improved
  Publish SDK gaps, fill the API reference, correct status values tiles#284
• Fix
  Clock levels, W5 BLE hang, and audit small bugs (L0, L4, W5) tiles#283
• Fix
  Sleep, RTC, backup and watchdog on L0, L4, W5 tiles#280
• New
  Sense.CAM.P: Driver 1.0.0 (datasheet + bench audit), dual-bus core_tiles_pal2, twin registered, definition from the DB tiles#277
• Fix
  WBA ADC4 VREFINT / temperature channels and calibration; W5 status-LED scaling tiles#269
• New
  Status LED brightness holds across VDD tiles#259
• Fix
  L422 FPU enable; Core.ST.L4.1 twin to the datasheet tiles#258
• New
  Flash a running L4 over USB serial, no bootloader tiles#254
• Fix
  Enable VREFINT on Core.ST.L0, and never measure VDDA mid-DMA tiles#245
• Fix
  Raise the characteristic table from 16 to 24 tiles#243
• Improved
  core_scope: first-class Scope streaming for hand-written C, USB and BLE tiles#242

Drivers

• New
  I3C controller, tiles_pal bridge and coregen key; Sense.I.6P6 over I3C tiles#302
• Improved
  The Cores are renamed after their silkscreens: Core.ST.L4.1 is now Core.ST.L4, and likewise for the other Cores. Old names keep working.Core.ST.H5, Core.ST.L0, Core.ST.L4.2, Display.RGBW, Drive.A.2, Drive.H, Drive.P, Sense.CAM.P, Sense.CAP tiles#297
• Fix
  Drive.P: Wake from sleep, clicks end at 0 V, FIFO-paced streaming, recovery keeps UPI (3.5.0)Drive.H tiles#288
• Fix
  Drive.A.2: Wake keeps mute, per-channel set_mv reference, limiter on by default (3.3.0) tiles#286
• New
  Sense.CAP: Driver 1.0.0, general-purpose IQS7211A driver; twin to match tiles#282
• New
  Sense.CAM.P: Driver 1.0.0 (datasheet + bench audit), dual-bus core_tiles_pal2, twin registered, definition from the DB tiles#277
• New
  Sense.HR: Driver 1.0.0 (revived from wip/sense-hr, datasheet-audited), Studio palette + twin, definition fixed in the DB tiles#276
• New
  Sense.M.3G: First reviewed release (1.0.0), Studio palette + twin, definition from the DB tiles#275
• Fix
  Sense.MIC: Production signal chain (CMM-2718AT-38164W, AD8605 24x, half-wave), SPL math, read validation, reference wake, sleep; twin to the schematic (2.4.0) tiles#274
• New
  Model the last stand-in calls on Sense.TOF and Sense.T.C tiles#273
• Fix
  Sense.T.C: Sense the surface on CRx1, configure the chip fully, recover from resets; Vibe controls; twin to match (1.4.0) tiles#271
• Fix
  Sense.TOF: Command handshakes, calibration/state handling, short-range reliability; docs and twin to the datasheet (1.6.0) tiles#270
• Fix
  Core.ST.W5 to the datasheet and schematic tiles#268
• Fix
  Store.O.128: Transport guards, report program/erase timeouts, chip-erase to 300 s (1.1.0) tiles#267
• Fix
  Drive.A.2: Per-channel waveform start/stop, AGC write order, sine pitch; gain control (3.2.0) tiles#266
• Fix
  Drive.DC.H: Locked fields were dropped; speed scale 16-128 rad/s with 2π; Vibe controls (4.3.0) tiles#265
• Fix
  Power.L.1N: LED roles were backwards; NTC fully off; charge-current changes apply (1.2.0) tiles#264
• New
  Drive.H, Display.RGBW: Vibe controls for the settings that matter most tiles#263
• Fix
  Power.L.1T: 4.20 V in init, is_charging gates, comparator polarity; docs to the schematic (3.3.0) tiles#262
• Fix
  Display.RGBW: Blue/white were swapped; animations ran dark (Auto_DC): 2.5.0 tiles#261
• Fix
  Drive.P: Cap output at the rated ±95 V; Studio buffers for samples / sense (3.4.0) tiles#260
• Fix
  L422 FPU enable; Core.ST.L4.1 twin to the datasheet tiles#258
• Improved
  Drive.H: DRV2605 amplitude math, Studio actuator settings; twin to the datasheet tiles#257
• New
  Rail chains + efficiency in the power contract; Power.BB to the datasheets tiles#256
• Fix
  Sense.I.6P6: Datasheet corrections, driver 1.3.0 tiles#255
• New
  Tile twins live here, next to their drivers tiles#251
• New
  Sense.TOF: Vibe settings for range, rate, iterations and threshold tiles#249
• New
  Sense.CAP: v0.4.0: bounded polled latency, burst channel reads tiles#244
• Improved
  Power.L.1N: expose the USB input current limit; first Vibe Settings tiles#241

Studio

• Fix
  Recover from ack WAIT, and wait for a draining target rail web#462
• Fix
  H5 SWD flash log reaches 100 % and drops the BOOT0 note web#461
• Fix
  Offer SWD for USB-DFU Cores (the H5's CoreProbe path was unreachable) web#460
• New
  H5 support: SWD flash over the CoreProbe + serial update web#459
• New
  The renamed Cores (Core.ST.L4 / L0 / H5); saved projects migrate on open web#448
• Fix
  Accept the renamed Core stems alongside the old ones web#446
• New
  Auto-wire uses the SWD and secondary-edge pads last web#439
• New
  Dual-bus tiles share an SPI bus with a cs_id (tiles#295) web#438
• Fix
  Distinct chip selects for SPI tiles sharing a bus (tiles#294) web#435
• Fix
  W5 SWD flash refuses images that reach the stored-data and bond pages web#427
• New
  Core bus tuning reaches the build; rules for unrunnable I2C speeds web#426
• Fix
  Explain the one-time reconnect after a Core gets its own USB serial (tiles#285) web#425
• New
  Core pull-ups reach the build; rules for coregen's new refusals web#414
• New
  Return coregen's warnings and notes from successful builds web#413
• New
  Warn when Studio and the build service disagree on the SDK web#409
• New
  Stop the Claude answer in flight web#406
• Fix
  Draw T24 tiles centred, not as a module stack web#403
• New
  Tiles on two buses get a dual-bus PAL (core_tiles_pal2) web#391
• New
  List Sense.HR as a live driver web#388
• New
  List Sense.M.3G as a live driver web#385
• New
  Power solver honors rail chains, linear rails and efficiency web#349
• Fix
  Keep dialogs and inputs steady while Claude streams web#345
• New
  Flash L4 Cores over USB serial, with DFU as the fallback web#343
• Improved
  Drop the Firmware tab's Vibe view; Vibe is its own interface web#342
• New
  Label every tile short of production with its status web#341
• Fix
  Studio's Log out works; the account level shows live web#340
• New
  Each viewer's own tiles in Studio's pickers web#337
• New
  Load the tiles bundle at runtime; redeploy the builder only when it matters web#333
• New
  Twins declare what a person can do to them web#329
• New
  One twin per tile, one contract web#326
• New
  One tile-visibility rule, with grants, for every surface web#328
• Improved
  A Capabilities sheet: what a part can do, and what can reach it web#325
• Improved
  Let the assistant change a tile's settings web#324
• New
  Sense.TOF settings, a distance slider, and datasheet power web#322
• Improved
  Warn when two parts share an I²C address, and make the fix work web#321
• Improved
  Scope: always there, sized by hand, and smooth web#320
• New
  Show and hide channels, a full-screen view, and plots from the twin web#316
• Fix
  Deleting the selected tile no longer white-screens the editor web#315
• New
  Versions, starred states and going back, in Vibe's History tab web#309
• New
  Steady auto y-axis, and a per-strip fixed range web#308
• New
  Lower scope(...) to the SDK's core_scope web#306
• Improved
  One owner for a tile's spellings; Core lookups fail at compile time web#302
• Fix
  A W5 is told it has a radio web#301
• Fix
  Make the default Power pick deliberate; run workspace tests in CI web#300
• New
  The chat no longer locks while Claude works web#299
• New
  Pick from the viewer's tier catalog, tag pre-release tiles web#298
• New
  Stream scope(...) over Bluetooth on a Core with a radio web#297
• Improved
  Vibe digital twin, open slots and current limits; simulator + CoreProbe connect fixes web#294

SDK

• Fix
  NVIC priority write on Cortex-M0+, NVM bounds check that cannot wrap tiles#235
• New
  I2C target mode, ADC DMA + external trigger, timer TRGO tiles#234

Drivers

• Improved
  Vibe Settings: scale= (sub-unit settings) and Sense.MIC loudness thresholds tiles#238
• Improved
  Vibe Settings: when= dependencies, and Sense.MIC (with a reference-selection fix)Sense.I.6P6 tiles#237
• Fix
  Display.RGBW: @version 2.4.1, and gate the tag against the macros tiles#230
• Fix
  Sense.I.9: ACCEL_CONFIG 0x0B: 0x09 selected ±2 g against ±4 g DMP scale constants tiles#236
• Improved
  Vibe Settings: driver-defined settings, rules and docs (Sense.I.6P6) tiles#233

Studio

• Improved
  Shared-call settings in the story, with codes shown as what they mean, and updated driver manifests web#291
• Improved
  Vibe: scaled settings, power in the story, details toggle web#290
• Improved
  Vibe: the living story, the inspector, and system power web#288
• Improved
  Studio Vibe interface: one Claude, a living story, driver-defined Vibe Settings web#282
• New
  Vibe view: describe what the Core should do, the program appears web#280
• New
  Live Scope: stream DSL variables over USB and plot them web#279

SDK

• Improved
  core_stepper STEP/DIR pulse generator (+ USB printf overflow fix) tiles#231

Drivers

• Improved
  Display.RGBW: Correct three claims the docs site was publishingSense.T.C tiles#229
• Fix
  Display.RGBW: Safe-by-default drive current, correct the address note tiles#228

Studio

• Improved
  Display.RGBW: mirror driver v2.4.0 safe defaults, re-vendor, repin build SDK web#272