Class: HDLRuby::High::SignalI
- Inherits:
-
Low::SignalI
- Object
- Low::SignalI
- HDLRuby::High::SignalI
- Includes:
- HRef, SimSignal, WithFullname
- Defined in:
- lib/HDLRuby/hruby_high.rb,
lib/HDLRuby/hruby_rsim.rb,
lib/HDLRuby/hruby_rcsim.rb,
lib/HDLRuby/hruby_high_fullname.rb
Overview
Describes a signal.
Constant Summary collapse
Constants included from Low::Low2Symbol
Low::Low2Symbol::Low2SymbolPrefix, Low::Low2Symbol::Low2SymbolTable, Low::Low2Symbol::Symbol2LowTable
Instance Attribute Summary collapse
-
#can_read ⇒ Object
Tells if the signal can be read.
-
#can_write ⇒ Object
Tells if the signal can be written.
-
#dir ⇒ Object
The bounding direction.
-
#rcsignalI ⇒ Object
readonly
Extends the SignalI class for hybrid Ruby-C simulation.
Attributes included from SimSignal
Attributes inherited from Low::SignalI
Attributes included from Low::Hparent
Instance Method Summary collapse
-
#anyedge ⇒ Object
Creates an edge event from the signal.
-
#coerce(obj) ⇒ Object
Coerce by converting signal to an expression.
-
#initialize(name, type, dir, value = nil) ⇒ SignalI
constructor
Creates a new signal named +name+ typed as +type+ with +dir+ as bounding direction and possible +value+.
-
#low_object ⇒ Object
Get the low version off the object.
-
#negedge ⇒ Object
Creates a negative edge event from the signal.
-
#posedge ⇒ Object
Creates a positive edge event from the signal.
-
#to_expr ⇒ Object
Converts to a new expression.
-
#to_low(name = self.name) ⇒ Object
Converts the system to HDLRuby::Low and set its +name+.
-
#to_rcsim(rcowner) ⇒ Object
Generate the C description of the signal comming from object whose C description is +rcowner+.
-
#to_ref ⇒ Object
Converts to a new reference.
Methods included from WithFullname
Methods included from SimSignal
#add_anyedge, #add_negedge, #add_posedge, #assign, #assign_at, #each_anyedge, #each_negedge, #each_posedge, #execute, #fullname, #get_vars_with_fullname, #get_vars_with_idstr, #init_sim, #show_hierarchy
Methods included from HRef
#each, included, #objects, #to_event
Methods included from Enumerable
Methods inherited from Low::SignalI
#add_signal, #clone, #each_deep, #each_signal, #explicit_types!, #get_by_name, #get_signal, #immutable?, #replace_names!, #set_name!, #set_type!, #set_value!, #to_c, #to_c_alias, #to_c_signal, #to_ch, #to_hdr, #to_high, #to_verilog, #to_vhdl, #width
Methods included from Low::Low2Symbol
Methods included from Low::Hparent
#absolute_ref, #hierarchy, #no_parent!, #scope
Constructor Details
#initialize(name, type, dir, value = nil) ⇒ SignalI
Creates a new signal named +name+ typed as +type+ with +dir+ as bounding direction and possible +value+.
NOTE: +dir+ can be :input, :output, :inout or :inner
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# File 'lib/HDLRuby/hruby_high.rb', line 3959 def initialize(name,type,dir,value = nil) # Check the value. value = value.to_expr.match_type(type) if value # Initialize the type structure. super(name,type,value) unless name.empty? then # Named signal, set the hdl-like access to the signal. obj = self # For using the right self within the proc High.space_reg(name) { obj } end # Hierarchical type allows access to sub references, so generate # the corresponding methods. # For that first get the real type. type = type.def while type.is_a?(TypeDef) # Now process it if it is a structured type. if type.struct? then type.each_name do |name| sig = SignalI.new(name,type.get_type(name),dir) self.add_signal(sig) self.define_singleton_method(name) do RefObject.new(self.to_ref,sig) end end end # Check and set the bound. self.dir = dir # Set the read and write authorisations. @can_read = 1.to_expr @can_write = 1.to_expr end |
Instance Attribute Details
#can_read ⇒ Object
Tells if the signal can be read.
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# File 'lib/HDLRuby/hruby_high.rb', line 3950 def can_read @can_read end |
#can_write ⇒ Object
Tells if the signal can be written.
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# File 'lib/HDLRuby/hruby_high.rb', line 3953 def can_write @can_write end |
#dir ⇒ Object
The bounding direction.
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# File 'lib/HDLRuby/hruby_high.rb', line 3947 def dir @dir end |
#rcsignalI ⇒ Object (readonly)
Extends the SignalI class for hybrid Ruby-C simulation.
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# File 'lib/HDLRuby/hruby_rcsim.rb', line 428 def rcsignalI @rcsignalI end |
Instance Method Details
#anyedge ⇒ Object
Creates an edge event from the signal.
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# File 'lib/HDLRuby/hruby_high.rb', line 4039 def anyedge # return Event.new(:edge,self.to_ref) # Is there any sub signals? if self.each_signal.any? then # Yes, make events with them instead. return self.each_signal.map { |sig| sig.anyedge } else # No, create a single event. return Event.new(:anyedge,self.to_ref) end end |
#coerce(obj) ⇒ Object
Coerce by converting signal to an expression.
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# File 'lib/HDLRuby/hruby_high.rb', line 4062 def coerce(obj) return [obj,self.to_expr] end |
#low_object ⇒ Object
Get the low version off the object. NOTE: only useful for Signals and SystemIs since they can be accessed from outside the module they have been defined in.
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# File 'lib/HDLRuby/hruby_high.rb', line 4069 def low_object return @low_object end |
#negedge ⇒ Object
Creates a negative edge event from the signal.
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# File 'lib/HDLRuby/hruby_high.rb', line 4026 def negedge # return Event.new(:negedge,self.to_ref) # Is there any sub signals? if self.each_signal.any? then # Yes, make events with them instead. return self.each_signal.map { |sig| sig.negedge } else # No, create a single event. return Event.new(:negedge,self.to_ref) end end |
#posedge ⇒ Object
Creates a positive edge event from the signal.
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# File 'lib/HDLRuby/hruby_high.rb', line 4013 def posedge # return Event.new(:posedge,self.to_ref) # Is there any sub signals? if self.each_signal.any? then # Yes, make events with them instead. return self.each_signal.map { |sig| sig.posedge } else # No, create a single event. return Event.new(:posedge,self.to_ref) end end |
#to_expr ⇒ Object
Converts to a new expression.
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# File 'lib/HDLRuby/hruby_high.rb', line 4057 def to_expr return self.to_ref end |
#to_low(name = self.name) ⇒ Object
Converts the system to HDLRuby::Low and set its +name+.
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# File 'lib/HDLRuby/hruby_high.rb', line 4074 def to_low(name = self.name) # return HDLRuby::Low::SignalI.new(name,self.type.to_low) valueL = self.value ? self.value.to_low : nil signalIL = HDLRuby::Low::SignalI.new(name,self.type.to_low,valueL) @low_object = signalIL # Recurse on the sub signals if any. self.each_signal do |sig| signalIL.add_signal(sig.to_low) end # # For debugging: set the source high object # signalIL.properties[:low2high] = self.hdr_id # self.properties[:high2low] = signalIL return signalIL end |
#to_rcsim(rcowner) ⇒ Object
Generate the C description of the signal comming from object whose C description is +rcowner+
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# File 'lib/HDLRuby/hruby_rcsim.rb', line 432 def to_rcsim(rcowner) # Create the signal C object. @rcsignalI = RCSim.rcsim_make_signal(self.name.to_s, self.type.to_rcsim) # puts "to_rcsim for signal=(#{self.name})#{self}, @rcsignalI=#{@rcsignalI}" # Set the owner. RCSim.rcsim_set_owner(@rcsignalI,rcowner) # Create and add the sub signals if any. RCSim.rcsim_add_signal_signals(@rcsignalI, self.each_signal.each.map do |sig| sig.to_rcsim(@rcsignalI) end) # Set the initial value if any. if self.value then RCSim.rcsim_set_signal_value(@rcsignalI,self.value.to_rcsim) end return @rcsignalI end |