"""Simple test script for 1.54" 200x200 monochrome display.

Supported products:
  * Adafruit 1.54" Monochrome ePaper Display Breakout
    * https://www.adafruit.com/product/4196
  """
import time
import board
import displayio
import fourwire
import adafruit_ssd1608
displayio.release_displays()
# This pinout works on a Feather M4 and may need to be altered for other boards.
spi = board.SPI() # Uses SCK and MOSI
epd_cs = board.D9
epd_dc = board.D10
epd_reset = board.D5
epd_busy = board.D6
display_bus = fourwire.FourWire(spi, command=epd_dc, chip_select=epd_cs, reset=epd_reset,
                                 baudrate=1000000)
time.sleep(1)
display = adafruit_ssd1608.SSD1608(display_bus, width=200, height=200, busy_pin=epd_busy)
g = displayio.Group()
pic = displayio.OnDiskBitmap("/display-ruler.bmp")
t = displayio.TileGrid(pic, pixel_shader=pic.pixel_shader)
g.append(t)
display.root_group = g
display.refresh()
print("refreshed")
time.sleep(120)