Class: HDLRuby::High::SignalI
- Inherits:
-
Low::SignalI
- Object
- Base::SignalI
- Low::SignalI
- HDLRuby::High::SignalI
- Includes:
- HRef
- Defined in:
- lib/HDLRuby/hruby_high.rb
Overview
Describes a high-level 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.
Attributes inherited from Low::SignalI
Attributes included from Low::Hparent
Instance Method Summary collapse
-
#coerce(obj) ⇒ Object
Coerce by converting signal to an expression.
-
#edge ⇒ Object
Creates an edge event from the signal.
-
#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+.
-
#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_ref ⇒ Object
Converts to a new reference.
Methods included from HRef
Methods inherited from Low::SignalI
#clone, #each_deep, #eql?, #explicit_types!, #hash, #immutable?, #replace_names!, #set_name!, #set_type!, #set_value!, #to_c, #to_c_signal, #to_ch, #to_hdr, #to_high, #to_verilog, #to_vhdl, #width
Methods included from Low::Low2Symbol
Methods included from Low::Hparent
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 3467 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. if type.struct? then type.each_name do |name| self.define_singleton_method(name) do RefObject.new(self.to_ref, SignalI.new(name,type.get_type(name),dir)) 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 3458 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 3461 def can_write @can_write end |
#dir ⇒ Object
The bounding direction.
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# File 'lib/HDLRuby/hruby_high.rb', line 3455 def dir @dir end |
Instance Method Details
#coerce(obj) ⇒ Object
Coerce by converting signal to an expression.
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# File 'lib/HDLRuby/hruby_high.rb', line 3542 def coerce(obj) return [obj,self.to_expr] end |
#edge ⇒ Object
Creates an edge event from the signal.
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# File 'lib/HDLRuby/hruby_high.rb', line 3527 def edge return Event.new(:edge,self.to_ref) end |
#negedge ⇒ Object
Creates a negative edge event from the signal.
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# File 'lib/HDLRuby/hruby_high.rb', line 3522 def negedge return Event.new(:negedge,self.to_ref) end |
#posedge ⇒ Object
Creates a positive edge event from the signal.
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# File 'lib/HDLRuby/hruby_high.rb', line 3517 def posedge return Event.new(:posedge,self.to_ref) end |
#to_expr ⇒ Object
Converts to a new expression.
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# File 'lib/HDLRuby/hruby_high.rb', line 3537 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 3547 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) # # For debugging: set the source high object # signalIL.properties[:low2high] = self.hdr_id # self.properties[:high2low] = signalIL return signalIL end |