tinygo-org/tinygo v0.31.0

0.31.0

on GitHub

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