Merge pull request #30 from makermelissa/master

Added example for newer Revision B of the 0.96 MiniTFT

Author: makermelissa

docs/examples.rst

@@ -32,7 +32,13 @@ Simple example for the minitft featherwing
 MiniTFT Test
 ------------
 
-Simple example for the minitft
+Simple example for the minitft (newer Revision B)
+
+.. literalinclude:: ../examples/st7735r_minitft_revb_simpletest.py
+    :caption: examples/st7735r_minitft_revb_simpletest.py
+    :linenos:
+
+Simple example for the minitft (older Revision A)
 
 .. literalinclude:: ../examples/st7735r_minitft_simpletest.py
     :caption: examples/st7735r_minitft_simpletest.py

examples/st7735r_minitft_revb_simpletest.py

@@ -0,0 +1,62 @@
+# SPDX-FileCopyrightText: 2021 ladyada for Adafruit Industries
+# SPDX-License-Identifier: MIT
+
+"""
+This test will initialize the display using displayio and draw a solid green
+background, a smaller purple rectangle, and some yellow text.
+"""
+
+import board
+import terminalio
+import displayio
+from adafruit_display_text import label
+from adafruit_st7735r import ST7735R
+
+# Release any resources currently in use for the displays
+displayio.release_displays()
+
+spi = board.SPI()
+tft_cs = board.D5
+tft_dc = board.D6
+
+display_bus = displayio.FourWire(
+    spi, command=tft_dc, chip_select=tft_cs, reset=board.D9
+)
+
+display = ST7735R(
+    display_bus,
+    width=160,
+    height=80,
+    rowstart=1,
+    colstart=26,
+    rotation=270,
+    invert=True,
+)
+
+# Make the display context
+splash = displayio.Group()
+display.show(splash)
+
+color_bitmap = displayio.Bitmap(160, 80, 1)
+color_palette = displayio.Palette(1)
+color_palette[0] = 0x00FF00  # Bright Green
+
+bg_sprite = displayio.TileGrid(color_bitmap, pixel_shader=color_palette, x=0, y=0)
+splash.append(bg_sprite)
+
+# Draw a smaller inner rectangle
+inner_bitmap = displayio.Bitmap(150, 70, 1)
+inner_palette = displayio.Palette(1)
+inner_palette[0] = 0xAA0088  # Purple
+inner_sprite = displayio.TileGrid(inner_bitmap, pixel_shader=inner_palette, x=5, y=5)
+splash.append(inner_sprite)
+
+# Draw a label
+text_group = displayio.Group(scale=2, x=11, y=40)
+text = "Hello World!"
+text_area = label.Label(terminalio.FONT, text=text, color=0xFFFF00)
+text_group.append(text_area)  # Subgroup for text scaling
+splash.append(text_group)
+
+while True:
+    pass