def bench():
tbdut = zybo_vga(led,
btn,
vga_red,
vga_green,
vga_blue,
vga_hsync,
vga_vsync,
clock,
resolution=resolution,
color_depth=color_depth,
refresh_rate=refresh_rate,
line_rate=line_rate)
tbclk = clock.gen()
mdl = VGADisplay(frequency=clock.frequency,
resolution=resolution,
refresh_rate=refresh_rate,
line_rate=line_rate,
color_depth=color_depth)
tbmdl = mdl.process(glbl, vga)
@instance
def tbstim():
yield delay(100000)
raise StopSimulation
return tbdut, tbclk, tbmdl, tbstim
def bench():
tbdut = zybo_vga(led, btn, vga_red, vga_green, vga_blue,
vga_hsync, vga_vsync, clock,
resolution=resolution, color_depth=color_depth,
refresh_rate=refresh_rate, line_rate=line_rate)
tbclk = clock.gen()
mdl = VGADisplay(frequency=clock.frequency, resolution=resolution,
refresh_rate=refresh_rate, line_rate=line_rate,
color_depth=color_depth)
tbmdl = mdl.process(glbl, vga)
@instance
def tbstim():
yield delay(100000)
raise StopSimulation
return tbdut, tbclk, tbmdl, tbstim
def test_zybo_vga(args=None):
args = tb_default_args(args)
resolution = (80, 60,)
refresh_rate = 60
line_rate = 31250
color_depth = (6, 6, 6,)
clock = Clock(0, frequency=125e6)
glbl = Global(clock)
vga = VGA(color_depth=color_depth)
vga_hsync, vga_vsync = Signals(bool(0), 2)
vga_red, vga_green, vga_blue = Signals(intbv(0)[6:], 3)
led, btn = Signals(intbv(0)[4:], 2)
@myhdl.block
def bench():
tbdut = zybo_vga(led, btn, vga_red, vga_green, vga_blue,
vga_hsync, vga_vsync, clock,
resolution=resolution, color_depth=color_depth,
refresh_rate=refresh_rate, line_rate=line_rate)
tbclk = clock.gen()
mdl = VGADisplay(frequency=clock.frequency, resolution=resolution,
refresh_rate=refresh_rate, line_rate=line_rate,
color_depth=color_depth)
tbmdl = mdl.process(glbl, vga)
@instance
def tbstim():
yield delay(100000)
raise StopSimulation
return tbdut, tbclk, tbmdl, tbstim
# run the above testbench, the above testbench doesn't functionally
# verify anything only verifies basics.
run_testbench(bench, args=args)
# test conversion
portmap = dict(led=led, btn=btn, vga_red=vga_red, vga_grn=vga_green,
vga_blu=vga_blue, vga_hsync=vga_hsync, vga_vsync=vga_vsync,
clock=clock)
inst = zybo_vga(**portmap)
tb_convert(inst)
def test_zybo_vga(args=None):
args = tb_default_args(args)
resolution = (
80,
60,
)
refresh_rate = 60
line_rate = 31250
color_depth = (
6,
6,
6,
)
clock = Clock(0, frequency=125e6)
glbl = Global(clock)
vga = VGA(color_depth=color_depth)
vga_hsync, vga_vsync = Signals(bool(0), 2)
vga_red, vga_green, vga_blue = Signals(intbv(0)[6:], 3)
led, btn = Signals(intbv(0)[4:], 2)
@myhdl.block
def bench():
tbdut = zybo_vga(led,
btn,
vga_red,
vga_green,
vga_blue,
vga_hsync,
vga_vsync,
clock,
resolution=resolution,
color_depth=color_depth,
refresh_rate=refresh_rate,
line_rate=line_rate)
tbclk = clock.gen()
mdl = VGADisplay(frequency=clock.frequency,
resolution=resolution,
refresh_rate=refresh_rate,
line_rate=line_rate,
color_depth=color_depth)
tbmdl = mdl.process(glbl, vga)
@instance
def tbstim():
yield delay(100000)
raise StopSimulation
return tbdut, tbclk, tbmdl, tbstim
# run the above testbench, the above testbench doesn't functionally
# verify anything only verifies basics.
run_testbench(bench, args=args)
# test conversion
portmap = dict(led=led,
btn=btn,
vga_red=vga_red,
vga_grn=vga_green,
vga_blu=vga_blue,
vga_hsync=vga_hsync,
vga_vsync=vga_vsync,
clock=clock)
inst = zybo_vga(**portmap)
tb_convert(inst)