MicroCore v2.3.0

Changelog:

• Fix the issue where the AVRISPmkII programmer option didn't work
• Add operator bool to Serial for compatibility with the official Arduino API (#145)
• Add support for the Urboot bootloader
  • The bootloader occupies 256 bytes of flash, which leaves 256 bytes for the user application
  • The bootloader uses the Urprotocol, which is designed to be tightly integrated with Avrdude
  • The bootloader is very rugged and reliable, and will not loose its patched reset vector like Optiboot on ATtinys can

MicroCore v2.2.1

Changelog:

• Increase ADCtouch sensitivity with 10 instead of 8 bit resolution (#133)
• Prevent corruption of disassembler listing command for paths w/ spaces (#137)
• Remove "Timing" option from the tools menu
  • Instead, micros and its initialization code get automatically optimized away when not called in the user application
• Borrow picoCore compiler optimization tricks
• Fix issue where delayMicroseconds required a compile-time constant (#136)
• Use "correct" lock/unlock byte values in boards.txt
  • Previously Avrdude tried to write 0's to reserved bits that were supposed to be 1's
• Re-organize programmers menu
• Prepare for Avrdude 7.1
  • avrdude.conf updated to fully utilize the features and improvements Avrdude 7.1 brings over the current Avrdude 6.3

MicroCore v2.2.0

Changelog:

• Add flash write library (#131)
  • Flash is a light-weight library that lets you read and write to the internal flash memory without using a RAM buffer
  • The flash library is a semi high level library that utilizes AVR Libc's boot.h
  • It is page oriented, which means that you'll have to write an entire page to flash at once. The ATtiny13 's flash pages is 32 bytes large.
• Add capacitive touch library
  • ADCTouch is a light-weight, bare-bone capacitive touch library specifically written and optimized for ATtiny13
  • It allows users to create capacitive touch sensors without any external hardware. Each capacitive touch sensor requires a separate ADC pin

MicroCore v2.1.0

Changelog:

• Enable global interrupts by default
• Add support for delayMicroseconds not known at compile time
• Add TinyWire i2c library
  • This is a highly optimized software implementation that lets you use the ATtiny13 as an i2c master
  • i2c scanner and i2c EEPROM examples are provided

MicroCore v2.0.3

Changelog:

• Fix various typos in the documentation
• Add MPLAB SNAP and PICkit4 programmers
• Fix typo in round() macro
• Boards manager version will now install the latest avr-gcc 7.3.0-atmel3.6.1-arduino7 toolchain and Avrdude 6.3.0-arduino18 upload tool

MicroCore v2.0.2

Changelog:

• Fix typos in constrain() and round() macros
• Remove compile time constant check for various functions (#119)
  • This caused some unexpected behavior where functions had to be inlined to work as expected

MicroCore v2.0.1

Changelog:

• Fix an issue where multiple analogRead() calls caused compilation to fail (#118)

MicroCore v2.0.0

This release introduces some breaking changes.

Changelog:

• Fix issue where delay(0) didn't work as expected (#115)
• Fix export compiled binary on Windows computers
• Improve "unsafe" macros
  • This includes abs(), min(), max(), sq(), round() and constrain()
• Add PIN macros
  • You can use PIN_PB0 to refer to pins
• Add analog_pin_t typedef enum to refer to analog pins
  • This is a breaking change, and throws an error if you pass anything else than A0, A1, A2, or A3 to analogRead().
• Require pins to be constants, and thus known at compile time
  • This is also necessary, but breaking a change to improve code execution speed and reduce the overall compiled size.

MicroCore v1.0.7

Changelog:

• Generate assembly output when exporting binaries
• Add EEPROM retain menu option
• Fix map() overflow issue (#107)

MicroCore v1.0.6

Changelog:

• Add PIN macros
  • You can now refer to digital pins as PIN_PB0..5
• Update HalfDuplexSerial
  • MicroCore is now using @nerdralph's picoUART
• Prepare for PlatformIO support