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Contents
module Denko
module SPI
class BaseRegister
include Peripheral
#
# Registers act as a Board for components that need only digital pins in
# in their I/O direction. Give the register as a 'board' when initializing a
# new component, and pin numbers that map onto the registers parallel output pins.
#
include Behaviors::BoardProxy
attr_reader :bytes
def before_initialize(options={})
super(options)
#
# To use the register as a board proxy, we need to know how many
# bytes there are and map each bit to a virtual pin.
# Defaults to 1 byte. Ignore if writing to the register directly.
#
@bytes = options[:bytes] || 1
#
# When used as a board proxy, store the state of each register
# pin as a 0 or 1 in an array that is (@bytes * 8) long. Zero out to start.
#
@state = Array.new(@bytes*8) { 0 }
end
def after_initialize(options={})
super(options)
# Drive select pin high by default.
self.high
end
end
end
end
Version data entries
7 entries across 7 versions & 1 rubygems