def test_lt24lcd(args=None): args = tb_default_args(args) clock = Clock(0, frequency=50e6) reset = Reset(0, active=0, async=True) glbl = Global(clock, reset) lcd_on = Signal(bool(0)) lcd_resetn = Signal(bool(0)) lcd_csn = Signal(bool(0)) lcd_rs = Signal(bool(0)) lcd_wrn = Signal(bool(0)) lcd_rdn = Signal(bool(0)) lcd_data = Signal(intbv(0)[16:]) lcd = LT24Interface() resolution = lcd.resolution color_depth = lcd.color_depth # assign the ports to the interface lcd.assign(lcd_on, lcd_resetn, lcd_csn, lcd_rs, lcd_wrn, lcd_rdn, lcd_data) mvd = LT24LCDDisplay() @myhdl.block def bench_lt24lcdsys(): tbdut = mm_lt24lcdsys( clock, reset, lcd_on, lcd_resetn, lcd_csn, lcd_rs, lcd_wrn, lcd_rdn, lcd_data ) tbvd = mvd.process(glbl, lcd) # LCD display model tbclk = clock.gen() @instance def tbstim(): yield reset.pulse(33) yield clock.posedge timeout = 33000 while mvd.update_cnt < 3 and timeout > 0: yield delay(1000) timeout -= 1 yield delay(100) print("{:<10d}: simulation real time {}".format(now(), mvd.get_time())) raise StopSimulation return tbdut, tbvd, tbclk, tbstim run_testbench(bench_lt24lcdsys)
def tb_lt24lcd_driver(args=None): clock = Clock(0, frequency=50e6) reset = Reset(0, active=1, async=False) glbl = Global(clock, reset) lcd = LT24Interface() display = LT24LCDDisplay() cmd = Signal(intbv(0)[8:]) datalen = Signal(intbv(0, min=0, max=lcd.number_of_pixels+1)) data = Signal(intbv(0)[16:]) datasent = Signal(bool(0)) datalast = Signal(bool(0)) cmd_in_progress = Signal(bool(0)) def _bench_lt24lcd_driver(): tbdut = lt24lcd_driver(glbl, lcd, cmd, datalen, data, datasent, datalast, cmd_in_progress, maxlen=lcd.number_of_pixels) gtck = glbl_timer_ticks(glbl, tick_div=100) tbmdl = display.process(glbl, lcd) tbclk = clock.gen() @instance def tbstim(): yield reset.pulse(111) yield clock.posedge # -------------------------------------------- # send a column write command print("column write command") cmd.next = 0x2A bytes = [0, 0, 0, 239] data.next = bytes[0] datalen.next = 4 for ii in range(4): yield datasent.posedge data.next = bytes[ii+1] if ii < 3 else 0 cmd.next = 0 yield cmd_in_progress.negedge yield clock.posedge # -------------------------------------------- # send a page address write command print("page address write command") cmd.next = 0x2B bytes = [0, 0, 1, 0x3F] data.next = bytes[0] datalen.next = 4 for ii in range(4): yield datasent.posedge data.next = bytes[ii+1] if ii < 3 else 0 cmd.next = 0 yield cmd_in_progress.negedge yield clock.posedge # -------------------------------------------- # write display memory, full update print("display update") cmd.next = 0x2C data.next = randint(0, data.max-1) datalen.next = lcd.number_of_pixels for ii in range(lcd.number_of_pixels): yield datasent.posedge data.next = randint(0, data.max-1) if (ii % 5000) == 0: print("{} pixels xfer'd".format(ii)) cmd.next = 0 yield cmd_in_progress.negedge yield clock.posedge print("display update complete") # -------------------------------------------- # @todo: verify the display received an image yield delay(100) raise StopSimulation return tbdut, tbmdl, tbclk, tbstim, gtck run_testbench(_bench_lt24lcd_driver)