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Merge pull request #673 from caternuson/displayio_examples
CircuitPython displayio examples
2 parents 2b2bd39 + 6011a75 commit 7a07f5f

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‎CircuitPython_displayio/Helvetica-Bold-16.bdf‎

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‎CircuitPython_displayio/castle_sprite_sheet.bmp‎

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‎CircuitPython_displayio/cp_sprite_sheet.bmp‎

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‎CircuitPython_displayio/displayio_display_driver.py‎

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import board
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import displayio
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import adafruit_ili9341
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# Release any previously configured displays
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displayio.release_displays()
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# Setup SPI bus
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spi_bus = board.SPI()
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# Digital pins to use
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tft_cs = board.D10
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tft_dc = board.D9
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# Setup the display bus
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display_bus = displayio.FourWire(spi_bus, command=tft_dc, chip_select=tft_cs)
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# Setup the Display
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display = adafruit_ili9341.ILI9341(display_bus, width=320, height=240)
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#
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# DONE - now you can use the display however you want
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#
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bitmap = displayio.Bitmap(320, 240, 2)
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palette = displayio.Palette(2)
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palette[0] = 0
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palette[1] = 0xFFFFFF
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for x in range(10, 20):
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for y in range(10, 20):
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bitmap[x, y] = 1
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tile_grid = displayio.TileGrid(bitmap, pixel_shader=palette)
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group = displayio.Group()
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group.append(tile_grid)
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display.show(group)
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display.refresh_soon()

‎CircuitPython_displayio/displayio_display_manual.py‎

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import board
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import displayio
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# Release any previously configured displays
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displayio.release_displays()
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# Setup SPI bus
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spi_bus = board.SPI()
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# Digital pins to use
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tft_cs = board.D10
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tft_dc = board.D9
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# Setup the display bus
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display_bus = displayio.FourWire(spi_bus, command=tft_dc, chip_select=tft_cs)
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# Setup the initialization sequence
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# stolen from adafruit_ili9341.py
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INIT_SEQUENCE = (
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b"\x01\x80\x80" # Software reset then delay 0x80 (128ms)
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b"\xEF\x03\x03\x80\x02"
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b"\xCF\x03\x00\xC1\x30"
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b"\xED\x04\x64\x03\x12\x81"
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b"\xE8\x03\x85\x00\x78"
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b"\xCB\x05\x39\x2C\x00\x34\x02"
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b"\xF7\x01\x20"
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b"\xEA\x02\x00\x00"
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b"\xc0\x01\x23" # Power control VRH[5:0]
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b"\xc1\x01\x10" # Power control SAP[2:0];BT[3:0]
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b"\xc5\x02\x3e\x28" # VCM control
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b"\xc7\x01\x86" # VCM control2
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b"\x36\x01\x38" # Memory Access Control
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b"\x37\x01\x00" # Vertical scroll zero
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b"\x3a\x01\x55" # COLMOD: Pixel Format Set
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b"\xb1\x02\x00\x18" # Frame Rate Control (In Normal Mode/Full Colors)
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b"\xb6\x03\x08\x82\x27" # Display Function Control
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b"\xF2\x01\x00" # 3Gamma Function Disable
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b"\x26\x01\x01" # Gamma curve selected
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b"\xe0\x0f\x0F\x31\x2B\x0C\x0E\x08\x4E\xF1\x37\x07\x10\x03\x0E\x09\x00" # Set Gamma
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b"\xe1\x0f\x00\x0E\x14\x03\x11\x07\x31\xC1\x48\x08\x0F\x0C\x31\x36\x0F" # Set Gamma
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b"\x11\x80\x78" # Exit Sleep then delay 0x78 (120ms)
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b"\x29\x80\x78" # Display on then delay 0x78 (120ms)
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)
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# Setup the Display
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display = displayio.Display(display_bus, INIT_SEQUENCE, width=320, height=240)
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#
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# DONE - now you can use the display however you want
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#
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bitmap = displayio.Bitmap(320, 240, 2)
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palette = displayio.Palette(2)
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palette[0] = 0
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palette[1] = 0xFFFFFF
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for x in range(10, 20):
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for y in range(10, 20):
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bitmap[x, y] = 1
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tile_grid = displayio.TileGrid(bitmap, pixel_shader=palette)
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group = displayio.Group()
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group.append(tile_grid)
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display.show(group)
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display.refresh_soon()

‎CircuitPython_displayio/displayio_font.py‎

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import board
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from adafruit_bitmap_font import bitmap_font
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from adafruit_display_text import label
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display = board.DISPLAY
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# Set text, font, and color
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text = "HELLO WORLD"
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font = bitmap_font.load_font("/Helvetica-Bold-16.bdf")
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color = 0xFF00FF
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# Create the tet label
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text_area = label.Label(font, text=text, color=color)
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# Set the location
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text_area.x = 20
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text_area.y = 20
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# Show it
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display.show(text_area)

‎CircuitPython_displayio/displayio_imageload.py‎

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import board
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import displayio
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import adafruit_imageload
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display = board.DISPLAY
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bitmap, palette = adafruit_imageload.load("/purple.bmp",
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bitmap=displayio.Bitmap,
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palette=displayio.Palette)
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# Create a TileGrid to hold the bitmap
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tile_grid = displayio.TileGrid(bitmap, pixel_shader=palette)
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# Create a Group to hold the TileGrid
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group = displayio.Group()
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# Add the TileGrid to the Group
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group.append(tile_grid)
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# Add the Group to the Display
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display.show(group)
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# Loop forever so you can enjoy your image
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while True:
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pass

‎CircuitPython_displayio/displayio_ondiskbitmap.py‎

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import board
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import displayio
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display = board.DISPLAY
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# Open the file
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with open("/purple.bmp", "rb") as bitmap_file:
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# Setup the file as the bitmap data source
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bitmap = displayio.OnDiskBitmap(bitmap_file)
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# Create a TileGrid to hold the bitmap
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tile_grid = displayio.TileGrid(bitmap, pixel_shader=displayio.ColorConverter())
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# Create a Group to hold the TileGrid
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group = displayio.Group()
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# Add the TileGrid to the Group
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group.append(tile_grid)
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# Add the Group to the Display
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display.show(group)
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# Loop forever so you can enjoy your image
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while True:
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pass

‎CircuitPython_displayio/displayio_parallelbus.py‎

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import board
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import displayio
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# Release any previously configured displays
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displayio.release_displays()
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# Setup the display bus
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# Tested with a Metro M4 Express
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display_bus = displayio.ParallelBus(data0=board.D13,
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command=board.D6,
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chip_select=board.D7,
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write=board.D5,
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read=board.D4)
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# Setup the initialization sequence
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# stolen from adafruit_ili9341.py
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INIT_SEQUENCE = (
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b"\x01\x80\x80" # Software reset then delay 0x80 (128ms)
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b"\xEF\x03\x03\x80\x02"
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b"\xCF\x03\x00\xC1\x30"
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b"\xED\x04\x64\x03\x12\x81"
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b"\xE8\x03\x85\x00\x78"
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b"\xCB\x05\x39\x2C\x00\x34\x02"
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b"\xF7\x01\x20"
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b"\xEA\x02\x00\x00"
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b"\xc0\x01\x23" # Power control VRH[5:0]
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b"\xc1\x01\x10" # Power control SAP[2:0];BT[3:0]
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b"\xc5\x02\x3e\x28" # VCM control
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b"\xc7\x01\x86" # VCM control2
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b"\x36\x01\x38" # Memory Access Control
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b"\x37\x01\x00" # Vertical scroll zero
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b"\x3a\x01\x55" # COLMOD: Pixel Format Set
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b"\xb1\x02\x00\x18" # Frame Rate Control (In Normal Mode/Full Colors)
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b"\xb6\x03\x08\x82\x27" # Display Function Control
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b"\xF2\x01\x00" # 3Gamma Function Disable
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b"\x26\x01\x01" # Gamma curve selected
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b"\xe0\x0f\x0F\x31\x2B\x0C\x0E\x08\x4E\xF1\x37\x07\x10\x03\x0E\x09\x00" # Set Gamma
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b"\xe1\x0f\x00\x0E\x14\x03\x11\x07\x31\xC1\x48\x08\x0F\x0C\x31\x36\x0F" # Set Gamma
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b"\x11\x80\x78" # Exit Sleep then delay 0x78 (120ms)
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b"\x29\x80\x78" # Display on then delay 0x78 (120ms)
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)
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# Setup the Display
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display = displayio.Display(display_bus, INIT_SEQUENCE, width=320, height=240)
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#
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# DONE - now you can use the display however you want
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#
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bitmap = displayio.Bitmap(320, 240, 2)
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palette = displayio.Palette(2)
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palette[0] = 0
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palette[1] = 0xFFFFFF
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for x in range(10, 20):
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for y in range(10, 20):
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bitmap[x, y] = 1
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tile_grid = displayio.TileGrid(bitmap, pixel_shader=palette)
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group = displayio.Group()
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group.append(tile_grid)
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display.show(group)
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display.refresh_soon()

‎CircuitPython_displayio/displayio_pixels.py‎

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import board
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import displayio
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display = board.DISPLAY
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# Create a bitmap with two colors
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bitmap = displayio.Bitmap(display.width, display.height, 2)
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# Create a two color palette
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palette = displayio.Palette(2)
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palette[0] = 0x000000
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palette[1] = 0xffffff
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# Create a TileGrid using the Bitmap and Palette
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tile_grid = displayio.TileGrid(bitmap, pixel_shader=palette)
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# Create a Group
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group = displayio.Group()
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# Add the TileGrid to the Group
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group.append(tile_grid)
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# Add the Group to the Display
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display.show(group)
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# Draw a pixel
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bitmap[80, 50] = 1
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# Draw even more pixels
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for x in range(150, 170):
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for y in range(100, 110):
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bitmap[x, y] = 1

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