tinygo-org/tinygo v0.20.0

0.20.0

on GitHub

This release adds support for Go 1.17, fixes a bunch of compiler bugs (especially for WebAssembly), and adds support for a few new boards including boards based on the ESP32-C3 chip.

• command line
  • add support for Go 1.17
  • improve Go version detection
  • add support for the Black Magic Probe (BMP)
  • add a flag for creating cpu profiles
• compiler
  • builder: list libraries at the end of the linker command
  • builder: strip debug information at link time instead of at compile time
  • builder: add missing error check for ioutil.TempFile()
  • builder: simplify running of jobs
  • compiler: move LLVM math builtin support into the compiler
  • compiler: move math aliases from the runtime to the compiler
  • compiler: add aliases for many hashing packages
  • compiler: add *ssa.MakeSlice bounds tests
  • compiler: fix max possible slice
  • compiler: add support for new language features of Go 1.17
  • compiler: fix equally named structs in different scopes
  • compiler: avoid zero-sized alloca in channel operations
  • interp: don't ignore array indices for untyped objects
  • interp: keep reverted package initializers in order
  • interp: fix bug in compiler-time/run-time package initializers
  • loader: fix panic in CGo files with syntax errors
  • transform: improve GC stack slot pass to work around a bug
• standard library
  • crypto/rand: switch to arc4random_buf
  • math: fix math.Max and math.Min
  • math/big: fix undefined symbols error
  • net: add MAC address implementation
  • os: implement os.Executable
  • os: add SEEK_SET, SEEK_CUR, and SEEK_END
  • reflect: add StructField.IsExported method
  • runtime: reset heapptr to heapStart after preinit()
  • runtime: add subsections_via_symbols to assembly files on darwin
  • testing: add subset implementation of Benchmark
  • testing: test testing package using tinygo test
  • testing: add support for the -test.v flag
• targets
  • 386: bump minimum requirement to the Pentium 4
  • arm: switch to Thumb instruction set on ARM
  • atsamd: fix copy-paste error for atsamd21/51 calibTrim block
  • baremetal,wasm: support command line params and environment variables
  • cortexm: fix stack overflow because of unaligned stacks
  • esp32c3: add support for the ESP32-C3 from Espressif
  • nrf52840: fix ram size
  • nxpmk66f18: fix a suspicious bitwise operation
  • rp2040: add SPI support
  • rp2040: add I2C support
  • rp2040: add PWM implementation
  • rp2040: add openocd configuration
  • stm32: add support for PortMask* functions for WS2812 support
  • unix: fix time base for time.Now()
  • unix: check for mmap error and act accordingly
  • wasm: override dlmalloc heap implementation from wasi-libc
  • wasm: align heap to 16 bytes
  • wasm: add support for the crypto/rand package
• boards
  • add DefaultUART to adafruit boards
  • arduino-mkrwifi1010: add board definition for Arduino MKR WiFi 1010
  • arduino-mkrwifi1010: fix pin definition of NINA_RESETN
  • feather-nrf52: fix pin definition of uart
  • feather-rp2040: add pin name definition
  • gameboy-advance: fix ROM header
  • mdbt50qrx-uf2: add Raytac MDBT50Q-RX Dongle with TinyUF2
  • nano-rp2040: define NINA_SPI and fix wifinina pins
  • teensy40: enable hardware UART reconfiguration, fix receive watermark interrupt