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docs: call displayio.release_displays() before SPI init in README example (fixes #39) #42

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Aug 27, 2025
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docs: call displayio.release_displays() before SPI init in README example (fixes #39) #42

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9 changes: 6 additions & 3 deletions README.rst
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Original file line number Diff line number Diff line change
Expand Up @@ -39,11 +39,14 @@ Usage Example
import fourwire
import adafruit_ili9341
# If you use explicit pins with busio.SPI(...), calling release_displays() first
# prevents "pin in use" errors on subsequent reloads.
displayio.release_displays()
spi = board.SPI()
tft_cs = board.D9
tft_dc = board.D10
displayio.release_displays()
display_bus = fourwire.FourWire(spi, command=tft_dc, chip_select=tft_cs)
display = adafruit_ili9341.ILI9341(display_bus, width=320, height=240)
Expand All @@ -57,8 +60,8 @@ Usage Example
color_palette[0] = 0xFF0000
bg_sprite = displayio.TileGrid(color_bitmap,
pixel_shader=color_palette,
x=0, y=0)
pixel_shader=color_palette,
x=0, y=0)
splash.append(bg_sprite)
while True:
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