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Merged
merged 1 commit into from
Jun 27, 2025
Merged

use new OnDiskBitmap API #4

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47 changes: 21 additions & 26 deletions README.rst
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Original file line number Diff line number Diff line change
Expand Up @@ -92,9 +92,11 @@ Usage Example
.. code-block:: python

import time

import board
import displayio
import fourwire
from fourwire import FourWire

import adafruit_ek79686

# Used to ensure the display is free in CircuitPython
Expand All @@ -108,9 +110,7 @@ Usage Example
epd_busy = board.D6

# Create the displayio connection to the display pins
display_bus = fourwire.FourWire(
spi, command=epd_dc, chip_select=epd_cs, reset=epd_reset, baudrate=1000000
)
display_bus = FourWire(spi, command=epd_dc, chip_select=epd_cs, reset=epd_reset, baudrate=1000000)
time.sleep(1) # Wait a bit

# Create the display object - the third color is red (0xff0000)
Expand All @@ -128,28 +128,23 @@ Usage Example


# Display a ruler graphic from the root directory of the CIRCUITPY drive
with open("/display-ruler.bmp", "rb") as f:
pic = displayio.OnDiskBitmap(f)
# Create a Tilegrid with the bitmap and put in the displayio group
# CircuitPython 6 & 7 compatible
t = displayio.TileGrid(
pic, pixel_shader=getattr(pic, "pixel_shader", displayio.ColorConverter())
)
# CircuitPython 7 compatible only
# t = displayio.TileGrid(pic, pixel_shader=pic.pixel_shader)
g.append(t)

# Place the display group on the screen (does not refresh)
display.show(g)

# Show the image on the display
display.refresh()

print("refreshed")

# Do Not refresh the screen more often than every 180 seconds
# for eInk displays! Rapid refreshes will damage the panel.
time.sleep(180)
pic = displayio.OnDiskBitmap("/display-ruler.bmp")
# Create a Tilegrid with the bitmap and put in the displayio group
t = displayio.TileGrid(pic, pixel_shader=pic.pixel_shader)
g.append(t)

# Place the display group on the screen (does not refresh)
display.root_group = g

# Show the image on the display
display.refresh()

print("refreshed")

# Do Not refresh the screen more often than every 180 seconds
# for eInk displays! Rapid refreshes will damage the panel.
time.sleep(180)



Documentation
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30 changes: 12 additions & 18 deletions examples/ek79686_simpletest.py
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Original file line number Diff line number Diff line change
Expand Up @@ -49,25 +49,19 @@


# Display a ruler graphic from the root directory of the CIRCUITPY drive
with open("/display-ruler.bmp", "rb") as f:
pic = displayio.OnDiskBitmap(f)
# Create a Tilegrid with the bitmap and put in the displayio group
# CircuitPython 6 & 7 compatible
t = displayio.TileGrid(
pic, pixel_shader=getattr(pic, "pixel_shader", displayio.ColorConverter())
)
# CircuitPython 7 compatible only
# t = displayio.TileGrid(pic, pixel_shader=pic.pixel_shader)
g.append(t)
pic = displayio.OnDiskBitmap("/display-ruler.bmp")
# Create a Tilegrid with the bitmap and put in the displayio group
t = displayio.TileGrid(pic, pixel_shader=pic.pixel_shader)
g.append(t)

# Place the display group on the screen (does not refresh)
display.root_group = g
# Place the display group on the screen (does not refresh)
display.root_group = g

# Show the image on the display
display.refresh()
# Show the image on the display
display.refresh()

print("refreshed")
print("refreshed")

# Do Not refresh the screen more often than every 180 seconds
# for eInk displays! Rapid refreshes will damage the panel.
time.sleep(180)
# Do Not refresh the screen more often than every 180 seconds
# for eInk displays! Rapid refreshes will damage the panel.
time.sleep(180)