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Merged
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Nov 6, 2019
Merged

Updated example to work better for I2C #2

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891afa7
Updated example to work better for I2C
makermelissa Nov 6, 2019
c9b4d00
Merge branch 'master' of https://github.com/adafruit/Adafruit_Circuit…
makermelissa Nov 6, 2019
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34 changes: 22 additions & 12 deletions README.rst
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Original file line number Diff line number Diff line change
Expand Up @@ -61,36 +61,42 @@ Usage Example
.. code-block:: python

import board
import digitalio
import displayio
import terminalio
from adafruit_display_text import label
import adafruit_displayio_ssd1305

displayio.release_displays()

oled_reset = board.D9

# Use for I2C
#i2c = board.I2C()
#display_bus = displayio.I2CDisplay(i2c, device_address=0x3c, reset=oled_reset)
# Manually Toggle Reset
reset = digitalio.DigitalInOut(board.D9)
reset.switch_to_output(value=False)
reset.value = True

# Use for SPI
spi = board.SPI()
oled_cs = board.D5
oled_dc = board.D6
display_bus = displayio.FourWire(spi, command=oled_dc, chip_select=oled_cs,
reset=oled_reset, baudrate=1000000)
baudrate=1000000)

# Use for I2C
# i2c = board.I2C()
# display_bus = displayio.I2CDisplay(i2c, device_address=0x3c)

WIDTH = 128
HEIGHT = 64 # Change to 64 if needed
BORDER = 5
HEIGHT = 64 # Change to 32 if needed
BORDER = 8
FONTSCALE = 1

display = adafruit_displayio_ssd1305.SSD1305(display_bus, width=WIDTH, height=HEIGHT)

# Make the display context
splash = displayio.Group(max_size=10)
display.show(splash)

color_bitmap = displayio.Bitmap(WIDTH, HEIGHT, 1)
color_bitmap = displayio.Bitmap(display.width, display.height, 1)
color_palette = displayio.Palette(1)
color_palette[0] = 0xFFFFFF # White

Expand All @@ -100,7 +106,7 @@ Usage Example
splash.append(bg_sprite)

# Draw a smaller inner rectangle
inner_bitmap = displayio.Bitmap(WIDTH-BORDER*2, HEIGHT-BORDER*2, 1)
inner_bitmap = displayio.Bitmap(display.width - BORDER * 2, display.height - BORDER * 2, 1)
inner_palette = displayio.Palette(1)
inner_palette[0] = 0x000000 # Black
inner_sprite = displayio.TileGrid(inner_bitmap,
Expand All @@ -110,8 +116,12 @@ Usage Example

# Draw a label
text = "Hello World!"
text_area = label.Label(terminalio.FONT, text=text, color=0xFFFFFF, x=28, y=HEIGHT//2-1)
splash.append(text_area)
text_area = label.Label(terminalio.FONT, text=text, color=0xFFFFFF)
text_width = text_area.bounding_box[2] * FONTSCALE
text_group = displayio.Group(max_size=10, scale=FONTSCALE, x=display.width // 2 - text_width // 2,
y=display.height // 2)
text_group.append(text_area) # Subgroup for text scaling
splash.append(text_group)

while True:
pass
Expand Down
29 changes: 19 additions & 10 deletions examples/displayio_ssd1305_simpletest.py
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Original file line number Diff line number Diff line change
Expand Up @@ -4,37 +4,42 @@
"""

import board
import digitalio
import displayio
import terminalio
from adafruit_display_text import label
import adafruit_displayio_ssd1305

displayio.release_displays()

oled_reset = board.D9
# Manually Toggle Reset
reset = digitalio.DigitalInOut(board.D9)
reset.switch_to_output(value=False)
reset.value = True

# Use for SPI
spi = board.SPI()
oled_cs = board.D5
oled_dc = board.D6
display_bus = displayio.FourWire(spi, command=oled_dc, chip_select=oled_cs,
reset=oled_reset, baudrate=1000000)
baudrate=1000000)

# Use for I2C
#i2c = board.I2C()
#display_bus = displayio.I2CDisplay(i2c, device_address=0x3c, reset=oled_reset)
# i2c = board.I2C()
# display_bus = displayio.I2CDisplay(i2c, device_address=0x3c)

WIDTH = 128
HEIGHT = 64 # Change to 64 if needed
BORDER = 5
HEIGHT = 64 # Change to 32 if needed
BORDER = 8
FONTSCALE = 1

display = adafruit_displayio_ssd1305.SSD1305(display_bus, width=WIDTH, height=HEIGHT)

# Make the display context
splash = displayio.Group(max_size=10)
display.show(splash)

color_bitmap = displayio.Bitmap(WIDTH, HEIGHT, 1)
color_bitmap = displayio.Bitmap(display.width, display.height, 1)
color_palette = displayio.Palette(1)
color_palette[0] = 0xFFFFFF # White

Expand All @@ -44,7 +49,7 @@
splash.append(bg_sprite)

# Draw a smaller inner rectangle
inner_bitmap = displayio.Bitmap(WIDTH-BORDER*2, HEIGHT-BORDER*2, 1)
inner_bitmap = displayio.Bitmap(display.width - BORDER * 2, display.height - BORDER * 2, 1)
inner_palette = displayio.Palette(1)
inner_palette[0] = 0x000000 # Black
inner_sprite = displayio.TileGrid(inner_bitmap,
Expand All @@ -54,8 +59,12 @@

# Draw a label
text = "Hello World!"
text_area = label.Label(terminalio.FONT, text=text, color=0xFFFFFF, x=28, y=HEIGHT//2-1)
splash.append(text_area)
text_area = label.Label(terminalio.FONT, text=text, color=0xFFFFFF)
text_width = text_area.bounding_box[2] * FONTSCALE
text_group = displayio.Group(max_size=10, scale=FONTSCALE, x=display.width // 2 - text_width // 2,
y=display.height // 2)
text_group.append(text_area) # Subgroup for text scaling
splash.append(text_group)

while True:
pass