Class: OrigenAhbDev::DUTController

Inherits:
Object
  • Object
show all
Includes:
Origen::Controller
Defined in:
lib/origen_ahb_dev/dut_controller.rb

Instance Method Summary collapse

Instance Method Details

#ahb_trans(options = {}) ⇒ Object 



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# File 'lib/origen_ahb_dev/dut_controller.rb', line 48

def ahb_trans(options = {})
  pin(:hclk).drive(0)
  pins(:htrans).drive(0)
  pin(:hwrite).drive(0)
  pin(:hsize).drive(0)
  pin(:hburst).drive(0)
  pin(:hmastlock).drive(0)
  pin(:hprot).drive(0)
  pin(:hready).dont_care
  pins(:haddr).dont_care
  pins(:hwdata).dont_care
  pins(:hrdata).dont_care
  tester.cycle

  # Address Phase
  #
  # Master drives the address and control signals onto bus after the rising edge of HCLK
  pin(:hclk).drive(1)
  tester.cycle

  pin(:htrans).drive(0b00)
  pin(:hwrite).drive(options[:hwrite])
  pin(:hsize).drive(options[:hsize])
  pin(:hburst).drive(options[:hburst])
  pin(:hmastlock).drive(options[:hmastlock])
  pin(:hprot).drive(options[:hprot])
  pins(:haddr).drive(options[:haddr])

  pin(:hclk).drive(0)
  tester.cycle

  # Data Phase
  #
  # Slave samples the address and control information on the next rising edge of HCLK
  pin(:hclk).drive(1)
  tester.cycle

  pin(:hclk).drive(0)
  pin(:hready).compare(1)
  pins(:hwdata).drive(options[:hdata]) if options[:hwrite] == 1
  tester.cycle

  pin(:hclk).drive(1)
  pins(:hrdata).assert(options[:hdata]) if options[:hwrite] == 0
  tester.cycle

  pin(:hclk).drive(0)
  tester.cycle

  pin(:hclk).drive(1)
  pins(:htrans).drive(0)
  pin(:hwrite).drive(0)
  pin(:hsize).drive(0)
  pin(:hburst).drive(0)
  pin(:hmastlock).drive(0)
  pin(:hprot).drive(0)
  pin(:hready).dont_care
  pins(:haddr).dont_care
  pins(:hwdata).dont_care
  pins(:hrdata).dont_care
  tester.cycle

  pin(:hclk).drive(0)
  tester.cycle
end

#cleanup_pins ⇒ Object 



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# File 'lib/origen_ahb_dev/dut_controller.rb', line 32

def cleanup_pins
  pin(:resetb).drive(0)
  pin(:tclk).drive(0)
  pin(:tdi).drive(0)
  pin(:tms).drive(0)
  pin(:tdo).dont_care
end

#init_pins ⇒ Object 



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# File 'lib/origen_ahb_dev/dut_controller.rb', line 24

def init_pins
  pin(:resetb).drive(0)
  pin(:tclk).drive(0)
  pin(:tdi).drive(0)
  pin(:tms).drive(0)
  pin(:tdo).dont_care
end

#read_register(reg, options = {}) ⇒ Object 



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# File 'lib/origen_ahb_dev/dut_controller.rb', line 44

def read_register(reg, options = {})
  ahb.read_register(reg, options)
end

#shutdown(options = {}) ⇒ Object 



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# File 'lib/origen_ahb_dev/dut_controller.rb', line 16

def shutdown(options = {})
  # Shut everything down
  tester.wait time_in_ns: 250
  pin(:resetb).drive(0)

  cleanup_pins  # Give patterns a known exit condition
end

#startup(options = {}) ⇒ Object 



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# File 'lib/origen_ahb_dev/dut_controller.rb', line 5

def startup(options = {})
  tester.set_timeset('ahb', 40)

  init_pins     # Give pattern a known start up

  # Do some startup stuff here
  pin(:resetb).drive(0)
  tester.wait time_in_ns: 250
  pin(:resetb).drive(1)
end

#write_register(reg, options = {}) ⇒ Object 



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# File 'lib/origen_ahb_dev/dut_controller.rb', line 40

def write_register(reg, options = {})
  ahb.write_register(reg, options)
end