Class: GPSTool::Devices::RBT2300::Message

Inherits:
Message
  • Object
show all
Defined in:
lib/gpstool/devices/rbt-2300.rb

Constant Summary collapse

@@messages =
{
	"LOG101" => [:date, :mode, :frames, :pointer],
	"LOG102" => [:data],
	"LOG108" => [:mode, nil, nil, :overwrite, nil, :rate, nil, :files, nil]
}

Instance Attribute Summary

Attributes inherited from Message

#name, #parts

Class Method Summary collapse

Methods inherited from Message

#[], checksum, checksum_hex, #initialize, parse, read, #structure, #to_hash, #to_s, validate

Constructor Details

This class inherits a constructor from GPSTool::Message

Class Method Details

.read_body(io, name, options) ⇒ Object


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# File 'lib/gpstool/devices/rbt-2300.rb', line 21

def self.read_body(io, name, options)
	if (name == "LOG102")
		buffer = '$' + name
		buffer += io.readbytes(1)
		
		header_data = io.readbytes(3)
		buffer += header_data
		
		if header_data[0,2] == "0*"
			# This is sometimes a response when
			# an invalid segment is requested
			buffer += io.gets
			
			self.validate(buffer)
			
			return self.new([name, nil])
		else
			header = header_data.unpack("CCC")
		
			# Frame count is in bytes
			data_size = header[2]
			data = io.readbytes(data_size)
		
			buffer += data
			buffer += io.gets
		
			# Check that the data was correct
			self.validate(buffer)
		
			return self.new([name, header_data + data])
		end
	else
		return super(io, name, options)
	end
end