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This release improves reflect support, extends and improves the scheduler, and has a whole list of improvements to microcontroller boards. In particular, it adds supports for the ItsyBitsy M4, the NUCLEO-F103RB, and even adds some preliminary support for the GameBoy Advance.

  • command line
    • fix parsing of beta Go versions
    • check the major/minor installed version of Go before compiling
    • validate -target flag better to not panic on an invalid target
  • compiler
    • implement full slice expression: s[:2:4]
    • fix a crash when storing a linked list in an interface
    • fix comparing struct types by making type IDs more unique
    • fix some bugs in IR generation
    • add support for linked lists in reflect data
    • implement []rune to string conversion
    • implement support for go on func values
  • standard library
    • reflect: add support for named types
    • reflect: add support for t.Bits()
    • reflect: add basic support for t.AssignableTo()
    • reflect: implement t.Align()
    • reflect: add support for struct types
    • reflect: fix bug in v.IsNil and v.Pointer for addressable values
    • reflect: implement support for array types
    • reflect: implement t.Comparable()
    • runtime: implement stack-based scheduler
    • runtime: fix bug in the sleep queue of the scheduler
    • runtime: implement memcpy for Cortex-M
    • testing: implement stub testing.B struct
    • testing: add common test logging methods such as Errorf/Fatalf/Printf
  • targets
    • 386: add support for linux/386 syscalls
    • atsamd21: make SPI pins configurable so that multiple SPI ports can be
      used
    • atsamd21: correct issue with invalid first reading coming from ADC
    • atsamd21: add support for reset-to-bootloader using 1200baud over USB-CDC
    • atsamd21: make pin selection more flexible for peripherals
    • atsamd21: fix minimum delay in time.Sleep
    • atsamd51: fix minimum delay in time.Sleep
    • nrf: improve SPI write-only speed, by making use of double buffering
    • stm32f103: fix SPI frequency selection
    • stm32f103: add machine.Pin.Get method for reading GPIO values
    • stm32f103: allow board specific UART usage
    • nucleo-f103rb: add support for NUCLEO-F103RB board
    • itsybitsy-m4: add support for this board with a SAMD51 family chip
    • cortex-m: add support for arm.SystemReset()
    • gameboy-advance: add initial support for the GameBoy Advance
    • wasm: add //go:wasm-module magic comment to set the wasm module name
    • wasm: add syscall/js.valueSetIndex support
    • wasm: add syscall/js.valueInvoke support
Assets 7
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