Module: Denko::I2C::Peripheral

Includes:
Behaviors::BusPeripheralAddressed, Behaviors::Reader
Included in:
AnalogIO::ADS1115, Display::SSD1306, RTC::DS3231, Sensor::AHT10, Sensor::AHT20, Sensor::BME280, Sensor::BMP180, Sensor::HTU21D, Sensor::HTU31D, Sensor::QMP6988, Sensor::RCWL9620, Sensor::SHT3X
Defined in:
lib/denko/i2c/peripheral.rb

Instance Attribute Summary collapse

Attributes included from Behaviors::Callbacks

#callback_mutex

Attributes included from Behaviors::BusPeripheral

#address

Attributes included from Behaviors::Component

#board

Instance Method Summary collapse

Methods included from Behaviors::Reader

#_read, #read, #read_using, #wait_for_read

Methods included from Behaviors::Callbacks

#add_callback, #callbacks, #initialize, #pre_callback_filter, #remove_callback, #update

Methods included from Behaviors::State

#initialize, #state

Methods included from Behaviors::BusPeripheral

#atomically

Methods included from Behaviors::Component

#initialize, #micro_delay

Instance Attribute Details

#i2c_frequency ⇒ Object

Returns the value of attribute i2c_frequency.



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# File 'lib/denko/i2c/peripheral.rb', line 26

def i2c_frequency
  @i2c_frequency
end

#i2c_repeated_start ⇒ Object

Returns the value of attribute i2c_repeated_start.



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# File 'lib/denko/i2c/peripheral.rb', line 26

def i2c_repeated_start
  @i2c_repeated_start
end

Instance Method Details

#before_initialize(options = {}) ⇒ Object 



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# File 'lib/denko/i2c/peripheral.rb', line 7

def before_initialize(options={})
  # Allow peripherals to set @i2c_address.
  @address            ||= @i2c_address

  # I2C defaults if peripheral does not set.
  @i2c_frequency      ||= 100000
  @i2c_repeated_start ||= false

  # Override defaults if given in options.
  @i2c_frequency      = options[:i2c_frequency]      if options[:i2c_frequency]
  @i2c_repeated_start = options[:i2c_repeated_start] if options[:i2c_frequency]

  # Allow generic :address option to be given as :i2c_address before validation.
  # Superclass method will hande override.
  options[:address] ||= options[:i2c_address]

  super(options)
end

#i2c_read(register, num_bytes) ⇒ Object 



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# File 'lib/denko/i2c/peripheral.rb', line 33

def i2c_read(register, num_bytes)
  bus._read(address, register, num_bytes, i2c_frequency, i2c_repeated_start)
end

#i2c_write(bytes = []) ⇒ Object 



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# File 'lib/denko/i2c/peripheral.rb', line 29

def i2c_write(bytes=[])
  bus.write(address, bytes, i2c_frequency, i2c_repeated_start)
end