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• Support File systems (LittleFS)
• Support RTC (Real Time Clock)

• Incorrect buffer size of buffered graphic context #443
• Cannot use GP23 and GP24 #444
• Pass pin number to setWatch() callback #445

• Support PIO interrupt and FIFO functions
• Fix SPI sck option name
• Support micros() and delayMicroseconds()
• Support process.memoryUsage()
• Support API to get an available PIO state machine
• Support toInst() to get instruction code of PIO ASM
• Move dormant() to rp2 module

• Support RP2's PIO (Programmable I/O)

• Support dormant() for low power consumption
• Support inverted signal for PWM and tone() function
• Added seed() function for providing seed for random number generation (Math.random())
• Fixed: tone()'s duration timer is not released

• Support interrupt functions
  • attachInterrupt()
  • detachInterrupt()
  • enableInterrupts()
  • disableInterrupts()
• Integrate JerryScript 2.4.0. Support many ES2015+ language features
  • async functions
  • for-await-of language element
  • generator functions
  • and more...
• Changes in event constants for interrupt and setWatch. They can be combined with bitwise OR | operator.
  • LOW_LEVEL
  • HIGH_LEVEL
  • FALLING
  • RISING
  • CHANGE

• Support array of pins for pinMode(), digitalWrite()
• Support shorthands to create peripheral instances (GPIO, I2C, PWM, ...) in board object
• Support Ctrl+D for reset
• Enhance at module
• Enhance printing of Error object
• (Experimental) Exports WiFi class instead of an instance
• (Experimental) Add debug log for AT commands and handlers

• Fixed errors in URL module
• Fixed UART intermittent data loss
• Enhance button module
• Experimental modules
  • stream
  • net
  • http
  • wifi
  • Supporting netdev and ieee80211dev device drivers

• Support Ctrl+C to break execution
• Improve pulseRead() for triggering options
• Fix for supporting INPUT_PULLDOWN
• Set UART default baudrate to 115200.
• And more bug fixes.

The first release.

• Port to Raspberry Pi PIco