Release notes

Fix persistent BLE value buffers. Add verbose compiler statistics. Harden subprocess wait and signaling primitives. Merge UART and USB console input. Add terminal control primitives. LSP utilization improvements. Fix asynchronous RSA generation and enable it on ESP32-P4. Reduce ESP32 TLS memory use with dynamic mbedTLS buffers. Add asynchronous I2C/SPI target support. Migrate I2C/SPI controller operations to async. Fix a GC segmentation fault. Fix LSP rename range for nullable type annotations. Deprecate GPIO pins without an explicit direction. Add EC618 platform support.

Add standard streams. Improve short sleeps on ESP32. Add AES-CMAC support.

Fix uart: restore signal inversion. Expose DMA-backed channels for RMT. Fix semver in package manager. Fix pkg manager not cleaning up its lock file. Allow to upgrade individual packages (major and minor). Avoid flash-size probe on ESP32-S2.

Let peripherals take GPIO pin numbers instead of gpio.Pin. Don't flush the uart after partial writes. Add 'uart.Port.console' to read input from the console UART. Use Toit-based package manager.

Don't print diagnostics when TISON encoding/decoding fails. Fix ESP32 RSA watchdog timeout during key generation. Implement Elliptic Curve (EC) crypto support. Shrink esp32c6 size by removing fat. Use the partition table to determine the ESP32 flash size.

Fix memory leak in float_to_string primitive. Fix UART write+flush hang on partial writes. Roll ESP-IDF to 5.4.2. Add support for the esp32p4. Fix JSON encoding of floats.

Fix touch for the esp32s2/esp32s3. Fix UART on Windows.

Give warning for super.foo. Add a toit info command. Implement rename, prepareRename, and hover support. Support 'toitdoc serve' on Windows. Allow toit analyze to accept multiple source files. Fix use-after-free and off-by-one in Windows getline. Support macos Monterey. Fix multi-line 'or'/'and' with colon on continuation line. Add multicast API improvements and fix UDP_REUSE_PORT on Windows. Support shell completions.

Fix OOM with UDP send. RSA OAEP Support. Don't restrict esp32s3 spiram pins if we don't need to. Add gzip inflater. DNS improvements.

Expose RSA crypto functions. Implement mdns one shot. Update esptool. Fix double->string conversion. Fix Deque.reserve. Fix RMT on esp32c3. Fix kebabify on Windows. Rewrite UART. Build fat binaries for macosx. Initialize the drt/rts UART pins on Windows.

Many ESP-NOW improvements. Add support for updating mtime and atime of files. Add TRACE log level. All multiple BLE services/characteristics with the same uuid. Back off when BLE notifications run out of memory. Throw "ALREADY_EXIST" if a fs entry already exists on Windows. Use FILE_NOT_FOUND for more Windows errors. Allow to parse timestamps without seconds. Apply patch to the ESP-IDF so compilation of custom envelopes works on Windows. Fix the drom-map-end. Switch to '--if-error' instead of '--on-error'.

Reduce esp32c6 size by disabling ethernet.

Fix yaml stringify for strings starting with '>', like '>=1.0'. Allow to clear BLE values. Roll esp-idf to 5.4.1.

Disable all pull-ups and pull-downs when going to deep sleep.

Require i2c closing to be successful. Accept she-bang Toit files that don't have 'toit' extension. Fix GPIO pin, when using input, output, and initial value. Fix 'toit decode' without a snapshot. Fix Windows unicode issues. Fix SPI on Linux.

Add UTF-8 manifest to all executables. Improve compiler for invalid UTF-8 files. Update Debian changelog to latest version. Use the 'toit' executable as compiler for the LSP and toitdoc. Fix signing of disk images (dmg).

Don't use the latest Ubuntu for the deb-file generation. Fix toitdoc generation for the SDK. Fix executable signing for the new paths.

Add riscv64 cross-compilation support. Warn when an import uses an upper-case character. Warn if import segments don't match the case of the path. Install Toit in standard locations. Pessimize local types in the presence of non-local branches. Apply RMT patch in ESP-IDF. Fix GPIO on raspberry pi. Fix memory leak with pattern encoder.

Add support for pm (power management) functions. Add 'set-pull' to GPIO. Add finalizers for more resources. Use a weak map in the ServiceResourceProxy. Rewrite DAC to use new API. Implement new API for RMT and add support for encoders. Update ESP-NOW to use the latest API. Fix truthy type propagation. Improve type propagation for identical. Drop ifs with two dead blocks.

Fix i2c regression that led to stack overflows when calling read-address.

Increase OTA partition size for esp32c6.

Reimplement i2c driver based on newer ESP-IDF APIs. Give the Registers class a way to have control the byte-size. Add a getter for the level of a logger. Fix i2s code in ESP-IDF to correctly handle retries when low on memory.

Always bubble up BLE scan responses on macOS. Scan infinitely without a scan-duration on macOS. Use more of the default sdkconfig for LWIP. Fix break-length for io.Data and implement break receiving. Report lost UART data. Support password-less Soft AP. Rewrite pulse-counter driver. Allow to connect to TLS without certificate verification. Add missing IRAM_ATTR in I2S code. Update to esp-idf to cherry-pick for i2c and i2s fixes. Update Ubuntu builders to 22.04.

Add more documentation to 'ble.scan'. Add Map.map examples. Add return type to to-string-non-throwing. Add more TLS documentation. Add support for stringifying/printing unsigned int64s. Report OOM errors in NimBLE callbacks. Refactor the ADC to use the new API. Use the new I2S API and add tests. Sign Windows executables with new action. Fix documentation for ethernet boards. Fix PWM for ESP variants. Fix comment in byte-order.int64. Fix i2c for empty data and external memory.

Allow passing --dependency-file to 'toit analyze'. Add esp32s2 GPIO documentation. Add support for raw BLE data blocks. Add information about the Lilygo T-Internet-COM. Fix locking in heap support for esp32c6.

Upgrade to esp-idf v5.3.1. Check rodata reservation size when booting. Add preliminary esp32c6 support.

Fix flash cache synchronization regression in esp-idf.

Upgrade to esp-idf 5.1. Enable link-time optimizations.

Use auto-allocation of DMA channels for SPI. Fix bad 'i2c.write-reg' call.

Improve BLE advertisements. Add more BLE scanning options and support active scans. Cleanup the BLE library.