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@deadprogram deadprogram released this 26 Feb 17:48
· 347 commits to release since this release
v0.31.0
8eaa9bd

This is the highly anticipated first release of 2024! Some of the most requested features:

  • Go 1.22 support
  • macOS arm64 native binary release build
  • Nix flake support
  • LLVM 17

There are many improvements and fixes to the compiler and runtime. We also have a new net package for greatly improved network support on bare metal devices. We have a new wasm-unknown target for WebAssembly early adopters. And of course several new boards supported, such as the Adafruit QT Py ESP32-C, and the Thumby.

  • general
    • remove LLVM 14 support
    • add LLVM 17 support, and use it by default
    • add Nix flake support
    • update bundled Binaryen to version 116
    • add ports subcommand that lists available serial ports for -port and -monitor
    • support wasmtime version 14
    • add -serial=rtt for serial output over SWD
    • add Go 1.22 support and use it by default
    • change minimum Node.js version from 16 to 18
  • compiler
    • use the new LLVM pass manager
    • allow systems with more stack space to allocate larger values on the stack
    • build: fix a crash due to sharing GlobalValues between build instances
    • cgo: add C._Bool type
    • cgo: fix calling CGo callback inside generic function
    • compileopts: set purego build tag by default so that more packages can be built
    • compileopts: force-enable CGo to avoid build issues
    • compiler: fix crash on type assert on interfaces with no methods
    • interp: print LLVM instruction in traceback
    • interp: support runtime times by running them at runtime
    • loader: enforce Go language version in the type checker (this may break existing programs with an incorrect Go version in go.mod)
    • transform: fix bug in StringToBytes optimization pass
  • standard library
    • crypto/tls: stub out a lot of functions
    • internal/task, machine: make TinyGo code usable with "big Go" CGo
    • machine: implement I2C.SetBaudRate consistently across chips
    • machine: implement SPI.Configure consistently across chips
    • machine: add DeviceID for nrf, rp2040, sam, stm32
    • machine: use smaller UART buffer size on atmega chips
    • machine/usb: allow setting a serial number using a linker flag
    • math: support more math functions on baremetal (picolibc) systems
    • net: replace entire net package with a new one based on the netdev driver
    • os/user: add bare-bones implementation of this package
    • reflect: stub CallSlice and FuncOf
    • reflect: add TypeFor[T]
    • reflect: update IsZero to Go 1.22 semantics
    • reflect: move indirect values into interface when setting interfaces
    • runtime: stub Breakpoint
    • sync: implement trylock
  • targets
    • atmega: use UART double speed mode for fewer errors and higher throughput
    • atmega328pb: refactor to enable extra uart
    • avr: don't compile large parts of picolibc (math, stdio) for LLVM 17 support
    • esp32: switch over to the official SVD file
    • esp32c3: implement USB_SERIAL for USBCDC communication
    • esp32c3: implement I2C
    • esp32c3: implement RNG
    • esp32c3: add more ROM functions and update linker script for the in-progress wifi support
    • esp32c3: update to newer SVD files
    • rp2040: add support for UART hardware flow control
    • rp2040: add definition for machine.PinToggle
    • rp2040: set XOSC startup delay multiplier
    • samd21: add support for UART hardware flow control
    • samd51: add support for UART hardware flow control
    • wasm: increase default stack size to 64k for wasi/wasm targets
    • wasm: bump wasi-libc version to SDK 20
    • wasm: remove line of dead code in wasm_exec.js
  • new targets/boards
    • qtpy-esp32c3: add Adafruit QT Py ESP32-C3 board
    • mksnanov3: add support for the MKS Robin Nano V3.x
    • nrf52840-generic: add generic nrf52840 chip support
    • thumby: add support for Thumby
    • wasm: add new wasm-unknown target that doesn't depend on WASI or a browser
  • boards
    • arduino-mkrwifi1010, arduino-nano33, nano-rp2040, matrixportal-m4, metro-m4-airlift, pybadge, pyportal: add ninafw build tag and some constants for BLE support
    • gopher-badge: fix typo in USB product name
    • nano-rp2040: add UART1 and correct mappings for NINA via UART
    • pico: bump default stack size from 2kB to 8kB
    • wioterminal: expose UART4
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