v0.13.2

0.13.2

New Boards

• Arduino UNO R4 Minima & Wi-Fi (--target ra4m1):
  • Mostly working
  • IR-remote and WS2812 libraries do not support this chip. Disabled temporarily.
  • Hardware serial disabled until further testing.
  • Wi-Fi still untested.

New Components

• ADS1115 Analog-to-Digital Converter:
  • Class: Denko::AnalogIO::ADS1115.
  • Connects via I2C bus. Driver written in Ruby.
  • Can be used directly by calling ADS1115#read with the 2 config register bytes.
  • #read automatically waits for conversion before reading result.
  • Implements BoardProxy interface, so AnalogIO::Input can use it in place of Board.
  • For each AnalogIO::Input subcomponent:
    • Negative pin (1 or 3) of differential pair can be set with the keyword argument negative_pin:
    • Gain can be set with the keyword argument gain:
    • Sample rate can be set with the keyword argument sample_rate:
    • Sample rate doesn't affect update rate. Higher sample rates oversample for a single reading, increasing resolution.
    • ADS1115 sets @volts_per_bit in the subcomponent, so exact voltages can be calculated.
    • There is no listening interface for subcomponents.
  • Built in comparator not implemented.
  • Basically an I2C version of ADS1118 with the temperature sensor swapped for comparator.

Optimizations

• Boards now declare their serial RX buffer size and maximum I2C transaction size in handshake. This makes it possible to send data as fast as possible without data loss.
• Added benchmarks folder and a simple SSD1306 screen redrawing benchmark, with results for many chips.
• Changed many instance methods to use keyword args instead of options hash pattern. Better performance everywhere, but will matter most in mruby.
• Many small performance improvemnts taken from mruby implementation to keep code as similar as possible across both.

Minor Changes

• Improved detection of default serial interface and EEPROM availability at the sketch level.
• Pins defined as any of :SDA0, :SCL0, :MISO0, :MOSI0, :SCK0, :SS0 in a loaded board map are automatically copied to the key without the trailing 0, i.e. :SDA and so forth. This is convenient for chips like the RP2040 which don't define the "non-zero" pins at all.
• Simplified handling of Wi-Fi reconnection in that sketch.
• Wi-Fi sketch now prints its connection details to serial on each reconnect, as well as startup.
• Updated both IR libraries to latest version.

Bug Fixes

• Display::HD44780 was trying to write 1 and 0 as String instead of Integer to digital output pins.
• Wi-Fi and Ethernet sketches could get stuck in an endless loop when switching between a TCP client and the Serial interface fallback.
• SAMD21 could hang on I2C when writing lots of data. This has to do with its serial buffer not being saturated somehow? Fixed though.
• Board#set_register_divider wouldn't raise the correct ArgumentError if the divider given was out of range.
• Updated the arduino-yaml-board-maps project to prevent ESP32 chips from wrongly map many of their ADC pins.
• ESP32 variants, other than the original V1, could try to assign more LEDC (PWM) channels than they actually have.

Removed

• Removed the :pad option from Message::pack. Nothing was using it and padding bytes should be handled in the component class anyway.