Sha256: 0c383f9e0db7791ca26bbeebec6047430ed922addabc4654c2b6afaa336734ce
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Versions: 7
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Stored size: 1.29 KB
Contents
module Denko
module OneWire
class Peripheral
include Behaviors::BusPeripheralAddressed
include Behaviors::Poller
include Constants
attr_reader :address
alias :bus :board
def read_scratch(num_bytes, &block)
atomically do
bus.add_callback(:read, &block) if block_given?
match
bus.write(READ_SCRATCH)
bus.read(num_bytes)
end
end
def write_scratch(*bytes)
atomically do
match
bus.write(WRITE_SCRATCH)
bus.write(*bytes)
end
end
def copy_scratch
atomically do
match
bus.write(COPY_SCRATCH)
sleep 0.05
bus.reset if bus.parasite_power
end
end
def match
bus.reset
if bus.found_devices.count < 2
bus.write(SKIP_ROM)
else
bus.write(MATCH_ROM)
bus.write(address_bytes)
end
end
def address_bytes
Helper.address_to_bytes(self.address)
end
def serial_number
@serial_number ||= extract_serial
end
def extract_serial
# Remove CRC & family code.
serial = (@address & 0x00FFFFFFFFFFFFFF) >> 8
serial.to_s(16).rjust(12, "0")
end
end
end
end
Version data entries
7 entries across 7 versions & 1 rubygems