AtomVM

v0.6.0-alpha.0 release.

Please, read the getting started guide for flashing instructions.

CHANGELOG

Added

• Added the ability to specify the HSPI or VSPI ESP32 hardware interfaces when initializing the
  SPI Bus.
• Added support for the spi:close/1 function.
• Added AVM_VERBOSE_ABORT CMake define, which when set to on, will print the C module and line
  number when a VM abort occurs. This define is off by default.
• Added spi:write/3 and spi:write_read/3 functions to support generalized SPI transactions
  and arbitrary-length reads and writes from SPI devices.
• Added support for building ESP32 port with all currently supported versions of Espressif ESP-IDF,
  version 4.1.x through 4.4.x.
• Added support for controlling_process/2 in gen_udp and gen_tcp modules.
• Added ability to get the atomvm version via erlang:system_info.
• Added erlang:is_boolean/1 Bif.
• Added support for esp:partition_erase_range/2
• Added support for i2c:close/1
• Added support for erlang:unregister/1
• Added Elixir ESP32 LEDC driver and example
• Added support for uart:close/1
• Added Bitwise support for Elixir
• Added support for esp32-s2, esp32-s3, and esp32-c3 chips.
• Added Elixir I2C driver and example
• Added the ability to specify the I2C port
• Added support for the OTP math module
• Added support for erlang:integer_to_list/2 and erlang:integer_to_binary/2
• Added functions esp:sleep_enable_ext0_wakeup/2 and esp:sleep_enable_ext1_wakeup/2.
• Added support for FP opcodes 94-102 thus removing the need for AVM_DISABLE_FP=On with OTP-22+
• Added support for stacktraces
• Added support for utf-8, utf-16, and utf-32 bit syntax modifiers (put and match)
• Added support for Erlang gpio:close/1 and Elixir GPIO.close/1 for ESP32
• Added support for the Erlang gen_event module
• Added start_link support for the network module
• Added support for erlang:monotonic_time/1
• Added start_link support for the gen_statem module
• Added support for serializing floats in erlang external term encoding
• Added support for the SMALL_BIG_EXT erlang external term encoding
• Added support for erlang:memory(binary)
• Added support for callbacks on SNTP updates
• Multithreading support (SMP)
• Added support for code:load_abs/1, code:load_binary/3
• Added support for loading / closing AVMPacks at runtime
• Added support for ESP-IDF v5.x
• Added support for calendar:system_time_to_universal_time/2
• Added support for calendar:datetime_to_gregorian_seconds/1
• Added support for Raspberry Pi Pico
• Added support for nodejs with Wasm
• Added support for a subset of the OTP logger interface
• Added esp:partition_list/0 function
• Added esp:nvs_fetch_binary/2 and nvs_put_binary/3 functions (esp:nvs_set_binary and
  functions that default to ?ATOMVM_NVS_NS are deprecated now).
• Added most format possibilities to io:format/2 and io_lib:format/2
• Added unicode module with characters_to_list/1,2 and characters_to_binary/1,2,3 functions
• Added support for crypto:hash/2 (ESP32 and generic_unix with openssl)

Fixed

• Fixed issue with formatting integers with io:format() on STM32 platform
• Fixed a bug in the order of child initialization in the supervisor module
• Fixed a bug in the evaluation of receive ... after infinity -> ... expressions
• Fixed a bug in when putting integers in bit syntax with integer field sizes
• Fixed numerous bugs in memory allocations that could crash the VM
• Fixed SNTP support that had been broken in IDF 4.x builds
• Fixed erlang:send/2 not sending to registered name

Breaking Changes

IMPORTANT: These changes are incompatible with previous releases of AtomVM.

• Changed the configuration model of the SPI driver, in order to allow for multiple "follower"
  devices to be attached to the same SPI Bus.
• Changed the return value from erlang:system_info(esp32_chip_info) from a tuple to a map, with
  additional information.
• Changed the return type of the network:start function to return the tuple {ok, Pid} on a
  successful call, instead of the bare atom ok. Applications that use network:start and
  check the return value will need to be modified.
• The return type of i2c:read_bytes has changed from returning just a binary to
  returning the tuple {ok, Binary} when successful.
• The return type of many i2c operations under error conditions has changed from
  error to {error, Reason}, for improved diagnostics.
• The eavmlib logger interface has been removed

Removed

• ESP-IDF v3.x support.

First AtomVM release.